1 | #!/opt/bin/perl |
1 | #!/opt/bin/perl |
2 | |
2 | |
3 | # this hack is not considered release ready in and way, shape, or form |
3 | # |
4 | # ./vt102 bash |
4 | # Copyright(C) 2014 Marc Alexander Lehmann <vt102@schmorp.de> |
5 | # ./vt102 telnet towel.blinkenlights.nl |
5 | # |
6 | # ./vt102 curl http://artscene.textfiles.com/vt100/trekvid.vt |
6 | # vt102 is free software; you can redistribute it and/or modify it under |
7 | # ./vt102 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
7 | # the terms of the GNU General Public License as published by the Free |
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8 | # Software Foundation; either version 3, or (at your option) any later |
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9 | # version. |
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10 | # |
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11 | # vt102 is distributed in the hope that it will be useful, but WITHOUT |
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12 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 | # for more details. |
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15 | # |
8 | |
16 | |
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17 | # If this file contains embedded ROMs, the above copyright notice does |
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18 | # not apply to them. |
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19 | |
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20 | use strict; |
9 | use common::sense; |
21 | #use common::sense; |
10 | |
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11 | $| = 1; |
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12 | |
22 | |
13 | my $VT102 = 1; |
23 | my $VT102 = 1; |
14 | my $AVO = $VT102 || 1; |
24 | my $VT131 = 0; |
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25 | my $AVO = 1; |
15 | my $KBD = 1; |
26 | my $KBD = 1; |
16 | |
27 | |
17 | ############################################################################# |
28 | if ($ARGV[0] =~ /^-?-vt100$/) { |
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29 | shift; $VT102 = 0; $AVO = 0; |
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30 | } |
18 | |
31 | |
19 | my $PTY; # the pty we allocated, if any |
32 | if ($ARGV[0] =~ /^-?-vt100\+avo$/) { |
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33 | shift; $VT102 = 0; $AVO = 1; |
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34 | } |
20 | |
35 | |
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36 | if ($ARGV[0] =~ /^-?-vt102$/) { |
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37 | shift; # default |
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38 | } |
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39 | |
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40 | if ($ARGV[0] =~ /^-?-vt131$/) { |
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41 | shift; $VT131 = 1; |
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42 | } |
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43 | |
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44 | if ($ARGV[0] =~ /^-/) { |
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45 | die <<EOF; |
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46 | |
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47 | VT102, A VT100/101/102/131 SIMULATOR |
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48 | |
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49 | Usage: |
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50 | |
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51 | $0 [option] [program [args]] |
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52 | |
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53 | Examples: |
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54 | |
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55 | $0 bash |
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56 | $0 telnet towel.blinkenlights.nl |
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57 | $0 curl http://artscene.textfiles.com/vt100/trekvid.vt |
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58 | $0 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
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59 | |
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60 | Option can be one of: |
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61 | |
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62 | --vt100 |
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63 | --vt100+avo |
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64 | --vt102 |
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65 | --vt131 |
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66 | |
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67 | Non-obvious special keys are: |
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68 | |
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69 | SET UP Home |
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70 | BACKSPACE Rubout |
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71 | CAPS LOCK Prior/PgUp |
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72 | NO SCROLL Next/PgDown |
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73 | BREAK End |
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74 | |
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75 | Set-Up Guide: |
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76 | |
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77 | http://vt100.net/docs/vt102-ug/chapter3.html#S3.6 |
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78 | |
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79 | Author: |
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80 | |
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81 | Marc Lehmann <vt102\@schmorp.de> |
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82 | |
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83 | EOF |
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84 | } |
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85 | |
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86 | ############################################################################# |
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87 | # ROM/hardware init |
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88 | |
21 | my $ROM = do { |
89 | my $ROMS = do { |
22 | binmode DATA; |
90 | binmode DATA; |
23 | local $/; |
91 | local $/; |
24 | <DATA> |
92 | <DATA> |
25 | }; |
93 | }; |
26 | |
94 | |
27 | 0x6001 == length $ROM or die "corrupted rom image"; |
95 | 0x6801 == length $ROMS or die "corrupted rom image"; |
28 | |
96 | |
29 | binmode STDOUT; |
97 | binmode STDOUT; |
30 | |
98 | |
31 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
99 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
32 | |
100 | |
33 | # populate mem with rom contents |
101 | # populate mem with rom contents |
34 | if ($VT102) { |
102 | if ($VT102) { |
35 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x2000, 0x2000; |
103 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x2000, 0x2000; |
36 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROM, 0x4000, 0x2000; |
104 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROMS, 0x4000, 0x2000; |
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105 | @M[0xa000 .. 0xa7ff] = unpack "C*", substr $ROMS, 0x6000, 0x0800 if $VT131; |
37 | } else { |
106 | } else { |
38 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000; |
107 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x0000, 0x2000; |
39 | } |
108 | } |
40 | |
109 | |
41 | ############################################################################# |
110 | ############################################################################# |
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111 | # 8085 CPU registers and I/O support |
42 | |
112 | |
43 | my $PRSTATUS = 0; |
113 | my $PTY; # the pty we allocated, if any |
44 | |
114 | |
45 | # 8080/8085 registers |
115 | # 8080/8085 registers |
46 | # b, c, d, e, h, l, a |
116 | # b, c, d, e, h, l, a |
47 | my ($A, $B, $C, $D, $E, $H, $L, $A); |
117 | my ($A, $B, $C, $D, $E, $H, $L, $A); |
48 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
118 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
… | |
… | |
54 | my $x; # dummy temp for instructions |
124 | my $x; # dummy temp for instructions |
55 | |
125 | |
56 | my $CLK; # rather inexact clock |
126 | my $CLK; # rather inexact clock |
57 | |
127 | |
58 | ############################################################################# |
128 | ############################################################################# |
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129 | # the dreaded NVR1400 chip. not needed to get it going, but provided anyway |
59 | |
130 | |
60 | # nvram |
131 | # nvram |
61 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
132 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
62 | my $NVRADDR; |
133 | my $NVRADDR; |
63 | my $NVRDATA; |
134 | my $NVRDATA; |
64 | my $NVRLATCH; |
135 | my $NVRLATCH; |
65 | |
136 | |
66 | #$NVR[$_] = $_ for 0..99;#d# |
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67 | |
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68 | my @NVRCMD = ( |
137 | my @NVRCMD = ( |
69 | sub { # accept data |
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70 | $NVRDATA = ($NVRDATA << 1) + $_[1]; |
138 | sub { $NVRDATA = ($NVRDATA << 1) + $_[1]; }, # 0 accept data |
71 | }, |
139 | sub { $NVRADDR = ($NVRADDR << 1) + $_[1]; }, # 1 accept addr |
72 | sub { # accept addr |
140 | sub { ($NVRDATA <<= 1) & 0x4000 }, # 2 shift out |
73 | $NVRADDR = ($NVRADDR << 1)+ $_[1]; |
141 | undef, # 3 not used, will barf |
74 | }, |
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75 | sub { # shift out |
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76 | my $bit = $NVRDATA & 0x02000; |
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77 | $NVRDATA *= 2; |
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78 | $bit |
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79 | }, |
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80 | undef, |
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81 | sub { # write |
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82 | print "NVR WRITE $_[0]\n";#d# |
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83 | $NVR[$_[0]] = $NVRDATA & 0x3fff; |
142 | sub { $NVR[$_[0]] = $NVRDATA & 0x3fff; }, # 4 write |
84 | }, |
143 | sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase |
85 | sub { # erase |
144 | sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read |
86 | print "NVR ERASE $_[0]\n";#d# |
145 | sub { }, # 7 standby |
87 | $NVR[$_[0]] = 0x3fff; |
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88 | }, |
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89 | sub { # read |
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90 | # print "NVR READ $_[0] = $NVR[$_[0]]\n";#d# |
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91 | $NVRDATA = $NVR[$_[0]]; |
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92 | }, |
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93 | sub { # standby |
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94 | }, |
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95 | ); |
146 | ); |
96 | |
147 | |
97 | my @bitidx; |
148 | my @bitidx; |
98 | $bitidx[1 << $_] = 9 - $_ for 0..9; |
149 | $bitidx[1 << $_] = 9 - $_ for 0..9; |
99 | |
150 | |
… | |
… | |
106 | |
157 | |
107 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
158 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
108 | } |
159 | } |
109 | |
160 | |
110 | ############################################################################# |
161 | ############################################################################# |
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162 | # I/O ports - output |
111 | |
163 | |
112 | my $DC11 = 0; # 4 bit commands |
164 | my $DC11_REVERSE = 0; |
113 | my $DC12 = 0; |
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114 | |
165 | |
115 | my $XON = 1; # false if terminal wants us to pause |
166 | my $XON = 1; # false if terminal wants us to pause |
116 | my $PUSARTCMD; |
167 | my $PUSARTCMD; |
117 | |
168 | |
118 | my @KXMIT; # current scan queue |
169 | my @KXMIT; # current scan queue |
… | |
… | |
124 | |
175 | |
125 | sub out_00 { # pusartdata |
176 | sub out_00 { # pusartdata |
126 | # handle xon/xoff, but also pass it through |
177 | # handle xon/xoff, but also pass it through |
127 | if ($_[0] == 0x13) { |
178 | if ($_[0] == 0x13) { |
128 | $XON = 0; |
179 | $XON = 0; |
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180 | return;#d# |
129 | } elsif ($_[0] == 0x11) { |
181 | } elsif ($_[0] == 0x11) { |
130 | $XON = 1; |
182 | $XON = 1; |
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183 | return;#d# |
131 | } |
184 | } |
132 | |
185 | |
133 | syswrite $PTY, chr $_[0]; |
186 | syswrite $PTY, chr $_[0]; |
134 | |
187 | |
135 | $INTPEND |= 1; # 5.5 txrdy |
188 | $INTPEND |= 1; |
136 | } |
189 | } |
137 | |
190 | |
138 | sub out_01 { |
191 | sub out_01 { |
139 | $PUSARTCMD = shift; |
192 | $PUSARTCMD = shift; |
140 | |
193 | |
141 | $INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy |
194 | $INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy |
142 | $INTPEND |= 2 if $PUSARTCMD & 0x04; # VT102, 6.5 rxrdy |
195 | $INTPEND |= 2 if $PUSARTCMD & 0x04 && !@PUSARTRECV; # VT102, 6.5 rxrdy, needed for some reason |
143 | } |
196 | } |
144 | |
197 | |
145 | sub out_02 { } # baudrate generator |
198 | sub out_02 { } # baudrate generator |
146 | |
199 | |
147 | sub out_23 { } # unknown |
200 | sub out_23 { } # unknown |
… | |
… | |
152 | |
205 | |
153 | sub out_62 { |
206 | sub out_62 { |
154 | $NVRLATCH = shift; |
207 | $NVRLATCH = shift; |
155 | } |
208 | } |
156 | |
209 | |
157 | sub out_a2 { $DC11 = shift } |
210 | sub out_a2 { |
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211 | my $dc11 = 0x0f & shift; |
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212 | |
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213 | $DC11_REVERSE = 1 if $dc11 == 0b1010; |
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214 | $DC11_REVERSE = 0 if $dc11 == 0b1011; |
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215 | } |
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216 | |
158 | sub out_c2 { } # unknown |
217 | sub out_c2 { } # unknown |
159 | sub out_d2 { $DC12 = shift } |
218 | sub out_d2 { } # 0..3 == 80c/132c/60hz/50hz |
160 | |
219 | |
161 | sub out_82 { |
220 | sub out_82 { |
162 | # keyboard |
221 | # keyboard |
163 | |
222 | |
164 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INSERT L1(?) |
223 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INS L1 |
165 | # CLICK STARTSCAN ONLINE LOCKED | LED1 LED2 LED3 LED4 |
224 | # CLICK STARTSCAN ONLINE LOCKED | L1 L2 L3 L4 |
166 | $KSTATUS = $_[0]; |
225 | $KSTATUS = $_[0]; |
167 | |
226 | |
168 | # start new scan unless scan in progress |
227 | # start new scan unless scan in progress |
169 | if (($_[0] & 0x40) && !@KXMIT) { |
228 | if (($_[0] & 0x40) && !@KXMIT) { |
170 | # do not reply with keys in locked mode |
229 | # do not reply with keys in locked mode |
… | |
… | |
193 | $RST |= 1; |
252 | $RST |= 1; |
194 | } |
253 | } |
195 | } |
254 | } |
196 | |
255 | |
197 | ############################################################################# |
256 | ############################################################################# |
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257 | # I/O ports - input |
198 | |
258 | |
199 | my $NVRBIT; |
259 | my $NVRBIT; |
200 | my $LBA; |
260 | my $LBA6; # twice the frequenxy of LBA7 |
201 | |
261 | |
202 | sub in_00 { # pusart data |
262 | sub in_00 { # pusart data |
203 | # print "READ PUSARTDATA (@PUSARTRECV)\n"; |
263 | # interrupt not generated here, because infinite |
204 | |
264 | # speed does not go well with the vt102. |
205 | # $RST |= 2 if $#PUSARTRECV && $XON; |
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206 | # $INTPEND |= 2 if $#PUSARTRECV && $XON; |
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207 | |
265 | |
208 | shift @PUSARTRECV |
266 | shift @PUSARTRECV |
209 | } |
267 | } |
210 | |
268 | |
211 | sub in_01 { # pusart status |
269 | sub in_01 { # pusart status |
… | |
… | |
216 | sub in_22 { # modem buffer(?) |
274 | sub in_22 { # modem buffer(?) |
217 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
275 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
218 | 0x20 |
276 | 0x20 |
219 | } |
277 | } |
220 | |
278 | |
221 | sub in_0f { } # unknown, connected to out 2f |
279 | sub in_0f { 0xff } # vt102 unknown, connected to out 2f |
222 | |
280 | |
223 | sub in_42 { # flag buffer |
281 | sub in_42 { # flag buffer |
224 | ++$LBA; |
282 | ++$LBA6; |
225 | # ++$LBA; |
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226 | # printf "%04x lba %04x, %04x\n", $PC, $LBA, $CLK; |
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227 | |
283 | |
228 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2; |
284 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA6 & 0x3) == 0x2; |
229 | |
285 | |
230 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
286 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
231 | |
287 | |
232 | my $f = 0x85 | $NVRBIT; |
288 | my $f = 0x85 | $NVRBIT; |
233 | |
289 | |
234 | $f |= 0x02 unless $AVO; |
290 | $f |= 0x02 unless $AVO; |
235 | $f |= 0x40 if $LBA & 0x2; |
291 | $f |= 0x40 if $LBA6 & 0x2; |
236 | |
292 | |
237 | $f |
293 | $f |
238 | } |
294 | } |
239 | |
295 | |
240 | sub in_82 { # tbmt keyboard uart |
296 | sub in_82 { # tbmt keyboard uart |
… | |
… | |
242 | |
298 | |
243 | $RST |= 1; |
299 | $RST |= 1; |
244 | shift @KXMIT |
300 | shift @KXMIT |
245 | } |
301 | } |
246 | |
302 | |
247 | sub in_03 { 0xff } # unknown, printer uart input? |
303 | sub in_03 { 0xff } # vt102 unknown, printer uart input? |
248 | sub in_0b { 0xff } # unknown |
304 | sub in_0b { 0xff } # vt102 unknown |
249 | sub in_17 { 0xff } # unknown, printer status clear by reading? |
305 | sub in_17 { 0xff } # vt102 unknown, printer status clear by reading? |
250 | sub in_1b { 0xff } # unknown |
306 | sub in_1b { 0xff } # vt102 unknown |
251 | |
307 | |
252 | ############################################################################# |
308 | ############################################################################# |
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309 | # 8085 cpu opcodes and flag handling |
253 | |
310 | |
254 | sub sf { |
311 | sub sf { # set flags (ZSC - AP not implemented) |
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312 | $FS = $_[0] & 0x080; |
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313 | $FZ = !($_[0] & 0x0ff); |
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314 | $FC = $_[0] & 0x100; |
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315 | |
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316 | $_[0] &= 0xff; |
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317 | } |
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318 | |
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319 | sub sf8 { # set flags (ZSC - AP not implemented) |
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320 | $FS = $_[0] & 0x080; |
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321 | $FZ = !($_[0] & 0x0ff); |
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322 | $FC = 0; |
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323 | } |
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324 | |
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325 | sub sf_nc { # set flags except carry |
255 | $FS = $_[0] & 0x080; |
326 | $FS = $_[0] & 0x080; |
256 | $FZ = ($_[0] & 0x0ff) == 0; |
327 | $FZ = ($_[0] & 0x0ff) == 0; |
257 | $FC = $_[0] & 0x100; |
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258 | |
328 | |
259 | $_[0] & 0xff |
329 | $_[0] &= 0xff; |
260 | } |
330 | } |
261 | |
331 | |
262 | sub sf_nc { |
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263 | $FS = $_[0] & 0x080; |
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264 | $FZ = ($_[0] & 0x0ff) == 0; |
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265 | |
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266 | $_[0] & 0xff |
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267 | } |
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268 | |
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269 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0 .. 255; |
332 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0x00 .. 0xff; |
270 | my @ops; |
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271 | |
333 | |
272 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
334 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
273 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
335 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
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336 | |
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337 | $op[0x00] = ''; |
274 | |
338 | |
275 | # mov r,r / r,M / M,r |
339 | # mov r,r / r,M / M,r |
276 | for my $s (0..7) { |
340 | for my $s (0..7) { |
277 | for my $d (0..7) { |
341 | for my $d (0..7) { |
278 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; |
342 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; # mov |
279 | } |
343 | } |
280 | } |
344 | } |
281 | |
345 | |
282 | $op[0x00] = ''; |
346 | $op[0x76] = 'die "HLT"'; # hlt (mov m,m) |
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347 | |
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348 | # mvi r / M |
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349 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
283 | |
350 | |
284 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
351 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
285 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
352 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
286 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
353 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
287 | $op[0x31] = '$SP = IMM16' ; # lxi #d# 0xf000 because of limited stack |
354 | $op[0x31] = '$SP = IMM16' ; # lxi |
288 | |
355 | |
289 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
356 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
290 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
357 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
291 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
358 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
292 | |
359 | |
|
|
360 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
|
|
361 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
|
|
362 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
|
|
363 | |
|
|
364 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
|
|
365 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
|
|
366 | |
293 | sub inxdcx($$$) { |
367 | sub inxdcx($$$) { |
294 | $x = ($_[0] * 256 + $_[1] + $_[2]) & 0xffff; |
368 | $x = $_[0] * 256 + $_[1] + $_[2]; |
295 | $_[0] = $x >> 8; |
369 | ($_[0], $_[1]) = (($x >> 8) & 0xff, $x & 0xff); |
296 | $_[1] = $x & 0xff; |
|
|
297 | } |
370 | } |
298 | |
371 | |
299 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
372 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
300 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
373 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
301 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
374 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
… | |
… | |
304 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
377 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
305 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
378 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
306 | $op[0x3b] = '--$SP' ; # dcx |
379 | $op[0x3b] = '--$SP' ; # dcx |
307 | |
380 | |
308 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
381 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
309 | $op[0x04 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] + 1" for 0..7; # inr |
|
|
310 | $op[0x05 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] - 1" for 0..7; # dcr |
|
|
311 | |
|
|
312 | # mvi r / M |
|
|
313 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
382 | $op[0x04 + $_ * 8] = "sf_nc ++$reg[$_]" for 0..7; # inr |
|
|
383 | $op[0x05 + $_ * 8] = "sf_nc --$reg[$_]" for 0..7; # dcr |
|
|
384 | |
|
|
385 | $op[0x07] = ' $FC = $A & 0x80; $A = (($A << 1) + ($FC && 0x01)) & 0xff '; # rlc |
|
|
386 | $op[0x17] = ' ($FC, $A) = ($A & 0x80, (($A << 1) + ($FC && 0x01)) & 0xff)'; # ral |
|
|
387 | |
|
|
388 | $op[0x0f] = ' $FC = $A & 0x01; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
|
|
389 | $op[0x1f] = ' ($FC, $A) = ($A & 0x01, ($A >> 1) | ($FC && 0x80))'; # rar |
|
|
390 | |
|
|
391 | $op[0x2f] = '$A ^= 0xff'; # cma |
314 | |
392 | |
315 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
393 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
316 | # wasted three of my best days with mindless vt102 rom reverse engineering |
394 | # wasted three of my best days with mindless vt102 rom reverse engineering |
317 | sub dad { |
395 | sub dad { |
318 | $x = $H * 256 + $L + $_[0]; |
396 | $x = $H * 256 + $L + $_[0]; |
… | |
… | |
324 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
402 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
325 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
403 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
326 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
404 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
327 | $op[0x39] = 'dad $SP '; # dad |
405 | $op[0x39] = 'dad $SP '; # dad |
328 | |
406 | |
329 | $op[0x07] = ' $FC = $A >> 7; $A = ($A * 2 + $FC) & 0xff '; # rlc |
407 | $op[0x80 + $_] = 'sf $A += + ' . $reg[$_] for 0..7; # add |
330 | $op[0x17] = ' ($FC, $A) = ($A >> 7, ($A * 2 + $FC) & 0xff)'; # ral |
408 | $op[0x88 + $_] = 'sf $A += ($FC && 1) + ' . $reg[$_] for 0..7; # adc |
|
|
409 | $op[0x90 + $_] = 'sf $A -= + ' . $reg[$_] for 0..7; # sub |
|
|
410 | $op[0x98 + $_] = 'sf $A -= ($FC && 1) + ' . $reg[$_] for 0..7; # sbb |
|
|
411 | $op[0xa0 + $_] = 'sf8 $A &= ' . $reg[$_] for 0..7; # ana |
|
|
412 | $op[0xa8 + $_] = 'sf8 $A ^= ' . $reg[$_] for 0..7; # xra |
|
|
413 | $op[0xb0 + $_] = 'sf8 $A |= ' . $reg[$_] for 0..7; # ora |
|
|
414 | $op[0xb8 + $_] = 'sf $x = $A - ' . $reg[$_] for 0..7; # cmp |
|
|
415 | # possible todo: optimize ora a, maybe xra a |
331 | |
416 | |
332 | $op[0x0f] = ' $FC = $A & 1; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
417 | $op[0xc6] = 'sf $A += IMM8'; # adi |
333 | $op[0x1f] = ' ($FC, $A) = ($A & 1, ($A >> 1) | ($FC && 0x80))'; # rar |
418 | # ce ADI NYI |
|
|
419 | $op[0xd6] = 'sf $A -= IMM8'; # sui |
|
|
420 | # de SBI NYI |
|
|
421 | $op[0xe6] = 'sf8 $A &= IMM8'; # ani |
|
|
422 | $op[0xee] = 'sf8 $A ^= IMM8'; # xri |
|
|
423 | $op[0xf6] = 'sf8 $A |= IMM8'; # ori |
|
|
424 | $op[0xfe] = 'sf $A - IMM8'; # cpi |
334 | |
425 | |
335 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
426 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
336 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
427 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
337 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
428 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
429 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
430 | |
|
|
431 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
432 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
433 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
434 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = ($x & 0x80, $x & 0x40, $x & 0x10, $x & 0x04, $x & 0x01)'; # pop psw |
|
|
435 | |
|
|
436 | $op[0xc2 + $_ * 8] = 'BRA IMM16 ' . $cc[$_] for 0..7; # jcc |
|
|
437 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
438 | |
|
|
439 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) ' . $cc[$_] for 0..7; # ccc |
|
|
440 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
441 | |
|
|
442 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 ' . $cc[$_] for 0..7; # rcc |
|
|
443 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
444 | |
|
|
445 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
446 | |
|
|
447 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
448 | # f9 SPHL NYI |
|
|
449 | |
|
|
450 | $op[0x37] = '$FC = 1 '; # stc |
|
|
451 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
452 | |
|
|
453 | $op[0xd3] = 'OUT'; # out |
|
|
454 | $op[0xdb] = 'IN'; # in |
|
|
455 | |
|
|
456 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
457 | |
|
|
458 | # e3 xthl NYI # @ 917b, hl <-> (sp) |
338 | |
459 | |
339 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
460 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
340 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
461 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
341 | |
462 | |
342 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
463 | $op[0xf3] = '$IFF = 0'; # DI |
343 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
464 | $op[0xfb] = '$IFF = 1'; # EI |
344 | |
465 | |
345 | # yeah, the fucking setup screens actually use daa... |
466 | # yeah, the fucking setup screens actually use daa... |
346 | $op[0x27] = ' |
467 | $op[0x27] = ' |
347 | my ($h, $l); |
468 | my ($h, $l); |
348 | |
469 | |
349 | ($h, $l) = ($A >> 4, $A & 15); |
470 | ($h, $l) = ($A >> 4, $A & 15); |
350 | |
471 | |
351 | if ($l > 9 || $FA) { |
472 | if ($l > 9 || $FA) { |
352 | $A = sf $A + 6; |
473 | sf $A += 6; |
353 | ($h, $l) = ($A >> 4, $A & 15); |
474 | ($h, $l) = ($A >> 4, $A & 15); |
354 | } |
475 | } |
355 | |
476 | |
356 | if ($h > 9 || $FC) { |
477 | if ($h > 9 || $FC) { |
357 | $h += 6; |
478 | $h += 6; |
358 | $A = ($h * 16 + $l) & 0xff; |
479 | $A = ($h * 16 + $l) & 0xff; |
359 | } |
480 | } |
360 | '; # daa, almost certainly borked, also, acarry not set by sf |
481 | '; # daa, almost certainly borked, also, acarry not set by sf |
361 | |
482 | |
362 | $op[0x2f] = '$A ^= 0xff'; # cma |
|
|
363 | |
|
|
364 | $op[0x37] = '$FC = 1 '; # stc |
|
|
365 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
366 | |
|
|
367 | $op[0x76] = 'die "HLT"'; # hlt |
|
|
368 | |
|
|
369 | $op[0x80 + $_] = '$A = sf $A + ' . $reg[$_] for 0..7; # add |
|
|
370 | $op[0x88 + $_] = '$A = sf $A + $FC + ' . $reg[$_] for 0..7; # adc |
|
|
371 | $op[0x90 + $_] = '$A = sf $A - ' . $reg[$_] for 0..7; # sub |
|
|
372 | $op[0x98 + $_] = '$A = sf $A - $FC - ' . $reg[$_] for 0..7; # sbb |
|
|
373 | $op[0xa0 + $_] = '$A = sf $A & ' . $reg[$_] for 0..7; # ana |
|
|
374 | $op[0xa8 + $_] = '$A = sf $A ^ ' . $reg[$_] for 0..7; # xra |
|
|
375 | $op[0xb0 + $_] = '$A = sf $A | ' . $reg[$_] for 0..7; # ora |
|
|
376 | $op[0xb8 + $_] = ' sf $A - ' . $reg[$_] for 0..7; # cmp |
|
|
377 | # possible todo: optimize ora a, maybe xra a |
|
|
378 | |
|
|
379 | $op[0xc6 + $_] = '$A = sf $A + IMM8'; # adi |
|
|
380 | $op[0xd6 + $_] = '$A = sf $A - IMM8'; # sui |
|
|
381 | $op[0xe6 + $_] = '$A = sf $A & IMM8'; # ani |
|
|
382 | $op[0xee + $_] = '$A = sf $A ^ IMM8'; # xri |
|
|
383 | $op[0xf6 + $_] = '$A = sf $A | IMM8'; # ori |
|
|
384 | $op[0xfe + $_] = ' sf $A - IMM8'; # cpi |
|
|
385 | |
|
|
386 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
387 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
388 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
389 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = (!!($x & 0x80), !!($x & 0x40), !!($x & 0x10), !!($x & 0x04), !!($x & 0x01))'; # pop psw |
|
|
390 | |
|
|
391 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
392 | |
|
|
393 | $op[0xc2 + $_ * 8] = 'BRA IMM16 ' . $cc[$_] for 0..7; # jcc |
|
|
394 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
395 | |
|
|
396 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) ' . $cc[$_] for 0..7; # ccc |
|
|
397 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
398 | |
|
|
399 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
400 | |
|
|
401 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 ' . $cc[$_] for 0..7; # rcc |
|
|
402 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
403 | |
|
|
404 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
|
|
405 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
|
|
406 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
407 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
408 | |
|
|
409 | $op[0xd3] = 'OUT'; # out |
|
|
410 | $op[0xdb] = 'IN'; # in |
|
|
411 | |
|
|
412 | # e3 xthl @ 917b, hl <-> (sp) |
|
|
413 | |
|
|
414 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
415 | |
|
|
416 | $op[0xf3] = '$IFF = 0'; # DI |
|
|
417 | $op[0xfb] = '$IFF = 1'; # EI |
|
|
418 | |
|
|
419 | @ops = @op; # for debugging #d# |
|
|
420 | |
|
|
421 | ############################################################################# |
483 | ############################################################################# |
|
|
484 | # print cpu status for debugging purposes |
422 | |
485 | |
423 | # print cpu status, for debugging |
486 | # print cpu status, for debugging |
424 | sub status { |
487 | sub status { |
425 | my $PC = shift || $PC; |
488 | my $PC = shift || $PC; |
426 | |
489 | |
… | |
… | |
430 | ($FZ ? "1" : "0") |
493 | ($FZ ? "1" : "0") |
431 | . ($FS ? "1" : "0") |
494 | . ($FS ? "1" : "0") |
432 | . ($FC ? "1" : "0") |
495 | . ($FC ? "1" : "0") |
433 | . ($FA ? "1" : "0") |
496 | . ($FA ? "1" : "0") |
434 | . ($FP ? "1" : "0"), |
497 | . ($FP ? "1" : "0"), |
435 | $M[$PC], $ops[$M[$PC]]; |
498 | $M[$PC], $op[$M[$PC]]; |
436 | } |
499 | } |
437 | |
500 | |
438 | ############################################################################# |
501 | ############################################################################# |
|
|
502 | # video emulation |
439 | |
503 | |
440 | my @chr = ( |
504 | my @CHARMAP = ( |
441 | " ", |
505 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
442 | "\x{29eb}", |
506 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
443 | "\x{2592}", |
507 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
444 | "\x{2409}", |
508 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
445 | "\x{240c}", |
509 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
446 | "\x{240d}", |
510 | "\x{23bd}", "\x{251c}", "\x{2524}", "\x{2534}", |
447 | "\x{240a}", |
511 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
448 | "\x{00b0}", |
512 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
449 | "\x{00b1}", |
|
|
450 | "\x{2424}", |
|
|
451 | "\x{240b}", |
|
|
452 | "\x{2518}", |
|
|
453 | "\x{2510}", |
|
|
454 | "\x{250c}", |
|
|
455 | "\x{2514}", |
|
|
456 | "\x{253c}", |
|
|
457 | "\x{23ba}", |
|
|
458 | "\x{23bb}", |
|
|
459 | "\x{2500}", |
|
|
460 | "\x{23bc}", |
|
|
461 | "\x{23bd}", |
|
|
462 | "\x{251c}", |
|
|
463 | "\x{2524}", |
|
|
464 | "\x{2534}", |
|
|
465 | "\x{252c}", |
|
|
466 | "\x{2502}", |
|
|
467 | "\x{2264}", |
|
|
468 | "\x{2265}", |
|
|
469 | "\x{03c0}", |
|
|
470 | "\x{2260}", |
|
|
471 | "\x{0142}", |
|
|
472 | "\x{00b7}", |
|
|
473 | (map chr, 0x020 .. 0x7e), |
513 | (map chr, 0x020 .. 0x7e), |
474 | "?", |
|
|
475 | ); |
514 | ); |
476 | |
515 | |
477 | utf8::encode $_ for @chr; |
516 | utf8::encode $_ for @CHARMAP; |
478 | |
517 | |
479 | sub prscr { |
518 | my @SGR; # sgr sequences for attributes |
|
|
519 | |
|
|
520 | for (0x00 .. 0xff) { |
|
|
521 | my $sgr = ""; |
|
|
522 | |
|
|
523 | # ~1 sgr 5 blink |
|
|
524 | # ~2 sgr 4 underline |
|
|
525 | # ~4 sgr 1 bold |
|
|
526 | # 0x80 in attr, sgr 7, reversed |
|
|
527 | |
|
|
528 | $sgr .= ";5" unless $_ & 0x01; |
|
|
529 | $sgr .= ";4" unless $_ & 0x02; |
|
|
530 | $sgr .= ";1" unless $_ & 0x04; |
|
|
531 | $sgr .= ";7" if $_ & 0x80; |
|
|
532 | |
|
|
533 | $SGR[$_] = "\e[${sgr}m"; |
|
|
534 | } |
|
|
535 | |
|
|
536 | my @LED = $VT102 |
|
|
537 | ? qw(L1 INSERT DSR CTS LOCKED LOCAL SCAN BEEP) |
|
|
538 | : qw(L4 L3 L2 L1 LOCKED LOCAL SCAN BEEP); |
|
|
539 | |
|
|
540 | # display screen |
|
|
541 | sub display { |
480 | my $i = 0x2000; |
542 | my $i = 0x2000; |
481 | |
543 | |
482 | my $scr = sprintf "\x1b[H--- KBD %08b CLK %d PC %04x RST %03b IFF %01b PUS %02x IM %03b\x1b[K\n", $KSTATUS, $CLK, $PC, $RST, $IFF, $PUSARTCMD, $INTMASK; |
544 | my $leds = join " ", map $KSTATUS & 2**$_ ? "\e[7m$LED[$_]\e[m" : "$LED[$_]", reverse 0 .. $#LED; |
483 | |
545 | |
|
|
546 | my $scr = sprintf "\e[H--- LED [ %s ] CLK %d\e[K\n", $leds, $CLK; |
|
|
547 | |
|
|
548 | $scr .= "\e[?5" . ($DC11_REVERSE ? "h" : "l"); |
|
|
549 | |
484 | line: |
550 | line: |
485 | for my $y (0 .. 25) { |
551 | for my $y (0 .. 25) { # ntsc, two vblank delay lines, up to 24 text lines |
|
|
552 | my $prev_sgr; |
|
|
553 | |
486 | $scr .= sprintf "%2d |", ++$y; |
554 | $scr .= sprintf "%2d \xe2\x94\x82", $y; |
487 | |
555 | |
488 | for (0..140) { |
556 | for (0..139) { |
489 | my $c = $M[$i++]; |
557 | my $c = $M[$i]; |
490 | |
|
|
491 | # printf "%04x %02x\n", $i-1,$c; |
|
|
492 | |
558 | |
493 | if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
559 | if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
494 | $scr .= "|\x1b[K\n"; |
560 | $scr .= "\e[m\xe2\x94\x82\e[K\n"; |
495 | |
561 | |
496 | my $a1 = $M[$i++]; |
562 | my $a1 = $M[$i + 1]; |
497 | my $a0 = $M[$i++]; |
563 | my $a0 = $M[$i + 2]; |
498 | |
564 | |
499 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
565 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
500 | |
566 | |
501 | next line; |
567 | next line; |
502 | } |
568 | } |
503 | |
569 | |
504 | $scr .= "\x1b[7m" if $c & 0x80; |
570 | my $sgr = $SGR[ ($M[$i++ + 0x1000] & 15) | ($c & 0x80)]; |
505 | $scr .= $chr[$c & 0x7f] // sprintf "[%02x]", $c & 0x7f; |
571 | |
506 | $scr .= "\x1b[m" if $c & 0x80; |
572 | $scr .= $prev_sgr = $sgr if $sgr ne $prev_sgr; |
|
|
573 | |
|
|
574 | $scr .= $CHARMAP[$c & 0x7f]; |
507 | } |
575 | } |
508 | |
576 | |
509 | $scr .= "\x1b[K\noverflow\x1b[K\n"; |
577 | $scr .= "\e[K\nvideo overflow\e[K\n"; |
510 | last; |
578 | last; |
511 | } |
579 | } |
512 | |
580 | |
513 | if (0) { |
|
|
514 | $scr .= "\x1b[K\n"; |
|
|
515 | for my $o (0x200 .. 0x232) { |
|
|
516 | $scr .= sprintf "%04x:", $o * 16; |
|
|
517 | for (0..15) { |
|
|
518 | $scr .= sprintf " %02x", $M[$o * 16 + $_]; |
|
|
519 | } |
|
|
520 | $scr .= "\x1b[K\n"; |
|
|
521 | } |
|
|
522 | } |
|
|
523 | |
|
|
524 | $scr .= "\x1b[J"; |
581 | $scr .= "\e[m\e[J"; |
525 | |
582 | |
526 | syswrite STDOUT, $scr; |
583 | syswrite STDOUT, $scr; |
527 | } |
584 | } |
528 | |
585 | |
529 | ############################################################################# |
586 | ############################################################################# |
|
|
587 | # keyboard handling |
530 | |
588 | |
531 | if (@ARGV) { |
589 | # 0x080 shift, 0x100 ctrl |
532 | require IO::Pty; |
590 | my %KEYMAP = ( |
533 | $PTY = IO::Pty->new; |
591 | "\t" => 0x3a, |
|
|
592 | "\r" => 0x64, |
|
|
593 | "\n" => 0x44, |
|
|
594 | |
|
|
595 | "\x00" => 0x77 | 0x100, # CTRL-SPACE |
|
|
596 | "\x1c" => 0x45 | 0x100, # CTRL-\ |
|
|
597 | "\x1d" => 0x14 | 0x100, # CTRL-] |
|
|
598 | "\x1e" => 0x24 | 0x100, # CTRL-~ |
|
|
599 | "\x1f" => 0x75 | 0x100, # CTRL-? |
|
|
600 | |
|
|
601 | # hardcoded rxvt keys |
|
|
602 | "\e" => 0x2a, # ESC |
|
|
603 | "\e[3~" => 0x03, # DC |
|
|
604 | "\e[5~" => 0x7e, # CAPS LOCK (prior) |
|
|
605 | "\e[6~" => 0x6a, # NO SCROLL (next) |
|
|
606 | "\e[A" => 0x30, # UP |
|
|
607 | "\e[B" => 0x22, # DOWN |
|
|
608 | "\e[C" => 0x10, # RIGHT |
|
|
609 | "\e[D" => 0x20, # LEFT |
|
|
610 | "\e[a" => 0x30 | 0x080, # UP |
|
|
611 | "\e[b" => 0x22 | 0x080, # DOWN |
|
|
612 | "\e[c" => 0x10 | 0x080, # RIGHT |
|
|
613 | "\e[d" => 0x20 | 0x080, # LEFT |
|
|
614 | "\e[7~" => 0x7b, # SETUP (home) |
|
|
615 | "\e[8~" => 0x23, # BREAK (end) |
|
|
616 | "\e[8\$" => 0x23 | 0x080, # SHIFT BREAK / DISCONNECT (shift-end) |
|
|
617 | "\x7f" => 0x33, # BACKSPACE |
|
|
618 | |
|
|
619 | "\e[11~" => 0x32, # F1 |
|
|
620 | "\e[11~" => 0x42, # F2 |
|
|
621 | "\e[11~" => 0x31, # F3 |
|
|
622 | "\e[11~" => 0x41, # F4 |
|
|
623 | ); |
534 | |
624 | |
535 | my $slave = $PTY->slave; |
625 | @KEYMAP{map chr, 0x20 .. 0x40, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
|
|
626 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9" # 20..40 |
|
|
627 | . "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; # 5b..7e |
536 | |
628 | |
537 | unless (fork) { |
629 | $KEYMAP{"\x1f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
538 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
630 | $KEYMAP{"\x20" ^ $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
539 | |
631 | |
540 | close $PTY; |
632 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
|
|
633 | $KEYMATCH = qr{^($KEYMATCH)}s; |
541 | |
634 | |
542 | open STDIN , "<&", $slave; |
635 | my %KMOD; |
543 | open STDOUT, ">&", $slave; |
|
|
544 | open STDERR, ">&", $slave; |
|
|
545 | |
636 | |
546 | close $slave; |
637 | sub key { |
|
|
638 | my ($key) = @_; |
547 | |
639 | |
548 | exec @ARGV; |
640 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $KMOD{0x7c}; # ctrl-up |
549 | } |
641 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $KMOD{0x7d}; # shift-up |
550 | |
642 | |
551 | close $slave; |
643 | push @KQUEUE, 0x7c if $key & 0x100 && !$KMOD{0x7c}++; # ctrl-down |
552 | } else { |
644 | push @KQUEUE, 0x7d if $key & 0x080 && !$KMOD{0x7d}++; # shift-down |
553 | open $PTY, "</dev/null" or die;#d |
|
|
554 | } |
|
|
555 | |
645 | |
556 | ############################################################################# |
646 | $key &= 0x7f; |
|
|
647 | push @KQUEUE, $key, -$key; |
|
|
648 | } |
557 | |
649 | |
|
|
650 | my $STDIN_BUF; |
|
|
651 | |
|
|
652 | sub stdin_parse { |
|
|
653 | key $KEYMAP{$1} |
|
|
654 | while $STDIN_BUF =~ s/$KEYMATCH//; |
|
|
655 | |
|
|
656 | # skip input we can't decipher |
|
|
657 | substr $STDIN_BUF, 0, 1, ""; |
|
|
658 | } |
|
|
659 | |
|
|
660 | if ($KBD) { |
|
|
661 | system "stty -icanon -icrnl -inlcr -echo min 1 time 0"; |
|
|
662 | eval q{ sub END { system "stty sane" } }; |
|
|
663 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
|
|
664 | } |
|
|
665 | |
|
|
666 | ############################################################################# |
558 | # initial key input, to set up online mode etc. |
667 | # initial key input, to set up online mode etc. |
|
|
668 | # could be done via nvram defaults |
|
|
669 | |
559 | @KQUEUE = ( |
670 | @KQUEUE = ( |
560 | 0x7b, -0x7b, # setup |
671 | 0x7b, -0x7b, # setup |
561 | 0, # delay |
672 | 0, # delay |
562 | 0x28, -0x28, # 4, toggle local/online |
673 | 0x28, -0x28, # 4, toggle local/online |
563 | 0x38, -0x38, # 5, setup b |
674 | 0x38, -0x38, # 5, setup b |
… | |
… | |
574 | 0x37, -0x37, # 6 toggle wrap around |
685 | 0x37, -0x37, # 6 toggle wrap around |
575 | 0x7b, -0x7b, # leave setup |
686 | 0x7b, -0x7b, # leave setup |
576 | ); |
687 | ); |
577 | |
688 | |
578 | ############################################################################# |
689 | ############################################################################# |
|
|
690 | # process/pty management |
579 | |
691 | |
580 | # 0x80 shift, 0x100 ctrl, 0x200 toggle |
692 | require IO::Pty; |
581 | my %KEYMAP = ( |
693 | $PTY = IO::Pty->new; |
582 | "\t" => 0x3a, |
|
|
583 | "\r" => 0x64, |
|
|
584 | "\n" => 0x44, |
|
|
585 | |
694 | |
586 | # hardcoded rxvt keys |
695 | my $slave = $PTY->slave; |
587 | "\e" => 0x2a, # ESC |
|
|
588 | "\e[3~" => 0x03, # DC |
|
|
589 | "\e[5~" => 0x7e, # CAPS LOCK (prior) |
|
|
590 | "\e[6~" => 0x6a, # NO SCROLL (next) |
|
|
591 | "\e[A" => 0x30, # UP |
|
|
592 | "\e[B" => 0x22, # DOWN |
|
|
593 | "\e[C" => 0x10, # RIGHT |
|
|
594 | "\e[D" => 0x20, # LEFT |
|
|
595 | "\e[a" => 0x30 | 0x080, # UP |
|
|
596 | "\e[b" => 0x22 | 0x080, # DOWN |
|
|
597 | "\e[c" => 0x10 | 0x080, # RIGHT |
|
|
598 | "\e[d" => 0x20 | 0x080, # LEFT |
|
|
599 | "\e[7~" => 0x7b, # SETUP (home) |
|
|
600 | "\e[8~" => 0x23, # BREAK (end) |
|
|
601 | "\e[8\$" => 0x23 | 0x080, # SHIFT BREAK / DISCONNECT (shift-end) |
|
|
602 | "\x7f" => 0x33, # BACKSPACE |
|
|
603 | |
696 | |
604 | "\e[11~" => 0x32, # F1 |
697 | $PTY->set_winsize (24, 80); |
605 | "\e[11~" => 0x42, # F2 |
|
|
606 | "\e[11~" => 0x31, # F3 |
|
|
607 | "\e[11~" => 0x41, # F4 |
|
|
608 | ); |
|
|
609 | |
698 | |
610 | @KEYMAP{map chr, 0x20..0x40} = unpack "C*", pack "H*", |
699 | unless (fork) { |
611 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9"; |
700 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
612 | |
701 | |
613 | @KEYMAP{map chr, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
702 | close $PTY; |
614 | "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; |
|
|
615 | |
703 | |
616 | $KEYMAP{"\x3f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
704 | open STDIN , "<&", $slave; |
617 | $KEYMAP{uc $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
705 | open STDOUT, ">&", $slave; |
|
|
706 | open STDERR, ">&", $slave; |
618 | |
707 | |
619 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
708 | system "stty ixoff erase ^H"; |
620 | $KEYMATCH = qr{^($KEYMATCH)}s; |
|
|
621 | |
709 | |
622 | sub key { |
710 | $PTY->make_slave_controlling_terminal; |
623 | my ($key) = @_; |
711 | $PTY->close_slave; |
624 | |
712 | |
625 | state %MOD; |
713 | @ARGV = "sh" unless @ARGV; |
626 | |
714 | exec @ARGV; |
627 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $MOD{0x7c}; # ctrl-up |
|
|
628 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $MOD{0x7d}; # shift-up |
|
|
629 | |
|
|
630 | push @KQUEUE, 0x7c if $key & 0x100 && !$MOD{0x7c}++; # ctrl-down |
|
|
631 | push @KQUEUE, 0x7d if $key & 0x080 && !$MOD{0x7d}++; # shift-down |
|
|
632 | |
|
|
633 | $key &= 0x7f; |
|
|
634 | push @KQUEUE, $key, -$key; |
|
|
635 | } |
715 | } |
636 | |
716 | |
637 | my $STDIN_BUF; |
717 | $PTY->close_slave; |
638 | |
718 | |
639 | sub stdin_parse { |
|
|
640 | key $KEYMAP{$1} |
|
|
641 | while $STDIN_BUF =~ s/$KEYMATCH//; |
|
|
642 | |
|
|
643 | # skip input we can't decipher |
|
|
644 | substr $STDIN_BUF, 0, 1, ""; |
|
|
645 | } |
|
|
646 | |
|
|
647 | if ($KBD) { |
|
|
648 | system "stty -icanon -icrnl -inlcr -echo min 1 time 0"; |
|
|
649 | eval q{ sub END { system "stty sane" } }; |
|
|
650 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
|
|
651 | } |
|
|
652 | |
|
|
653 | ############################################################################# |
719 | ############################################################################# |
|
|
720 | # the actual hardware simulator |
654 | |
721 | |
655 | my @ICACHE; # compiled instruction cache |
722 | my @ICACHE; # compiled instruction cache |
656 | |
723 | |
657 | # the cpu |
|
|
658 | while () { |
724 | while () { |
659 | |
|
|
660 | # execute extended basic blocks |
725 | # execute extended basic blocks |
661 | $PC = ($ICACHE[$PC] ||= do { |
726 | $PC = ($ICACHE[$PC] ||= do { |
662 | my $pc = $PC; |
727 | my $pc = $PC; |
663 | |
728 | |
664 | my $insn = ""; |
729 | my $insn = ""; |
665 | |
730 | |
666 | # the jit compiler |
731 | # the jit compiler |
667 | for (0..15) { |
732 | for (0..31) { |
668 | |
|
|
669 | # optional tracing support |
|
|
670 | if (0) { |
|
|
671 | $insn .= qq< |
|
|
672 | if (\$PRSTATUS) { |
|
|
673 | status $pc; |
|
|
674 | die unless --\$PRSTATUS; |
|
|
675 | } |
|
|
676 | >; |
|
|
677 | } |
|
|
678 | |
|
|
679 | my $imm; |
733 | my $imm; |
680 | my $op = $op[$M[$pc++]]; |
734 | my $op = $op[$M[$pc++]]; |
681 | |
735 | |
682 | for ($op) { |
736 | for ($op) { |
683 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
737 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
… | |
… | |
704 | eval "use integer; sub { $insn }" or die "$insn: $@" |
758 | eval "use integer; sub { $insn }" or die "$insn: $@" |
705 | })->(); |
759 | })->(); |
706 | |
760 | |
707 | ++$CLK; |
761 | ++$CLK; |
708 | |
762 | |
709 | #TODO: just check on ret instructions or so |
763 | # things we do from time too time only |
|
|
764 | unless ($CLK & 0xf) { |
|
|
765 | # do I/O |
|
|
766 | |
|
|
767 | unless ($CLK & 0xfff) { |
|
|
768 | |
|
|
769 | # pty/serial I/O |
|
|
770 | unless ((@PUSARTRECV >= 128) || @KQUEUE || !$PTY) { |
|
|
771 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
|
|
772 | |
|
|
773 | if (select $rin, undef, undef, 0) { |
|
|
774 | sysread $PTY, my $buf, 256; |
|
|
775 | push @PUSARTRECV, unpack "C*", $buf; |
|
|
776 | } |
|
|
777 | } |
|
|
778 | |
|
|
779 | # keyboard input |
|
|
780 | if ($KBD) { |
|
|
781 | while (select my $rin = "\x01", undef, undef, 0) { |
|
|
782 | sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF |
|
|
783 | or last; |
|
|
784 | } |
|
|
785 | |
|
|
786 | stdin_parse if length $STDIN_BUF; |
|
|
787 | } |
|
|
788 | } |
|
|
789 | |
|
|
790 | # kick off various interrupts |
|
|
791 | |
|
|
792 | $RST |= 2 if @PUSARTRECV && $XON; # VT100, but works on vt102, too (probably not used on real hardware though) |
|
|
793 | #$INTPEND |= 2 if @PUSARTRECV && $XON; # VT102, 6.5 rxrdy |
|
|
794 | |
|
|
795 | # kick off vertical retrace form time to time |
|
|
796 | unless ($CLK & 0x1ff) { |
|
|
797 | $RST |= 4; # vertical retrace |
|
|
798 | } |
|
|
799 | |
|
|
800 | # handle video hardware |
|
|
801 | unless ($CLK & 0x3fff) { |
|
|
802 | display; |
|
|
803 | } |
|
|
804 | } |
|
|
805 | |
710 | # the interrupt logic |
806 | # the interrupt logic |
711 | $x = $INTPEND & ~$INTMASK; |
807 | if (($RST || ($INTPEND & ~$INTMASK)) && $IFF) { |
712 | |
|
|
713 | if (($RST || $x) && $IFF) { |
|
|
714 | # rst 1 kbd data available |
808 | # rst 1 kbd data available |
715 | # rst 2 pusart xmit+recv flag |
809 | # rst 2 pusart xmit+recv flag |
716 | # rst 4 vertical retrace |
810 | # rst 4 vertical retrace |
717 | # 5.5 vt125 mb7 trans ready (serial send?) |
811 | # 5.5 vt125 mb7 trans ready (serial send?) |
718 | # 6.5 vt125 mb7 read ready (something modem?) |
812 | # 6.5 vt125 mb7 read ready (something modem?) |
719 | # 7.5 vt125 mb7 vblank h(?) |
813 | # 7.5 vt125 mb7 vblank h(?) |
720 | # trap vt125 mbi init h(?) |
814 | # trap vt125 mbi init h(?) |
721 | my $vec; |
815 | my $vec; |
722 | |
816 | |
|
|
817 | $x = $INTPEND & ~$INTMASK; |
|
|
818 | |
723 | if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
819 | if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
724 | } elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
820 | } elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
725 | } elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
821 | } elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
726 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # for some reason, this breaks vt102 |
822 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # the vt102 firmware doesn't like combined interrupts |
727 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
823 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
728 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
824 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
729 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
825 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
730 | } else { |
826 | } else { |
731 | die; |
827 | die; |
… | |
… | |
735 | $M[--$SP] = $PC & 0xff; |
831 | $M[--$SP] = $PC & 0xff; |
736 | $PC = $vec; |
832 | $PC = $vec; |
737 | |
833 | |
738 | $IFF = 0; |
834 | $IFF = 0; |
739 | } |
835 | } |
740 | |
|
|
741 | # things we do from time too time only |
|
|
742 | unless ($CLK & 0xf) { |
|
|
743 | # do I/O |
|
|
744 | |
|
|
745 | unless ($CLK & 0x7ff) { |
|
|
746 | |
|
|
747 | # pty/serial I/O |
|
|
748 | unless (@PUSARTRECV || @KQUEUE || !$PTY) { |
|
|
749 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
|
|
750 | |
|
|
751 | if (select $rin, undef, undef, 0) { |
|
|
752 | sysread $PTY, my $buf, 256; |
|
|
753 | push @PUSARTRECV, unpack "C*", $buf; |
|
|
754 | } |
|
|
755 | } |
|
|
756 | |
|
|
757 | # keyboard input |
|
|
758 | if ($KBD) { |
|
|
759 | while (select my $rin = "\x01", undef, undef, 0) { |
|
|
760 | sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF |
|
|
761 | or last; |
|
|
762 | } |
|
|
763 | |
|
|
764 | stdin_parse if length $STDIN_BUF; |
|
|
765 | } |
|
|
766 | } |
|
|
767 | |
|
|
768 | # kick off various interrupts |
|
|
769 | |
|
|
770 | $RST |= 2 if @PUSARTRECV && $XON;# vt100, also works on vt102, probably by accident |
|
|
771 | #$INTPEND |= 2 if @PUSARTRECV && $XON;# real vt102 probably does it this way |
|
|
772 | |
|
|
773 | unless ($CLK & 0x3ff) { |
|
|
774 | $RST |= 4; # vertical retrace |
|
|
775 | } |
|
|
776 | |
|
|
777 | # handle video hardware |
|
|
778 | |
|
|
779 | unless ($CLK & 0x1fff) { |
|
|
780 | prscr; |
|
|
781 | } |
|
|
782 | } |
|
|
783 | } |
836 | } |
|
|
837 | |
|
|
838 | ############################################################################# |
|
|
839 | # roms in the data section + one newline |
|
|
840 | # |
|
|
841 | # vt100 @ 0x0000+0x0800 23-032E2 |
|
|
842 | # vt100 @ 0x0800+0x0800 23-061E2 |
|
|
843 | # vt100 @ 0x1000+0x0800 23-033E2 |
|
|
844 | # vt100 @ 0x1800+0x0800 23-034E2 |
|
|
845 | # |
|
|
846 | # vt102 @ 0x0000+0x8000 23-226E4 |
|
|
847 | # vt102 @ 0x8000+0x8000 23-225E4 |
|
|
848 | # |
|
|
849 | # vt131 @ 0xa000+0x0800 23-280E2 |
|
|
850 | # |
784 | |
851 | |
785 | __DATA__ |
852 | __DATA__ |
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787 | 2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
854 | 2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
788 | ! ͋!2[ 2v!!"I!>2s >2 B>2y >2!2!&l" >@:X!:!͔>2!b:!K>G:| !p ^!p" :!x:! u> |
855 | ! ͋!2[ 2v!!"I!>2s >2 B>2y >2!2!&l" >@:X!:!͔>2!b:!K>G:| !p ^!p" :!x:! u> |
… | |
… | |
892 | |