… | |
… | |
15 | # |
15 | # |
16 | |
16 | |
17 | # If this file contains embedded ROMs, the above copyright notice does |
17 | # If this file contains embedded ROMs, the above copyright notice does |
18 | # not apply to them. |
18 | # not apply to them. |
19 | |
19 | |
20 | # this hack is not considered release ready in and way, shape, or form |
20 | use 5.010; |
21 | # ./vt102 bash |
21 | use strict; |
22 | # ./vt102 telnet towel.blinkenlights.nl |
22 | use integer; |
23 | # ./vt102 curl http://artscene.textfiles.com/vt100/trekvid.vt |
|
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24 | # ./vt102 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
|
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25 | |
|
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26 | # TODO: ctrl |
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27 | |
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28 | use common::sense; |
23 | #use common::sense; |
29 | |
|
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30 | $| = 1; |
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31 | |
24 | |
32 | my $VT102 = 1; |
25 | my $VT102 = 1; |
33 | my $AVO = $VT102 || 1; |
26 | my $VT131 = 0; |
|
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27 | my $AVO = 1; |
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28 | |
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29 | shift, ($VT102 = 0), ($AVO = 0) if $ARGV[0] =~ /^-?-vt100$/; |
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30 | shift, ($VT102 = 0) if $ARGV[0] =~ /^-?-vt100\+avo$/; |
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31 | shift if $ARGV[0] =~ /^-?-vt102$/; |
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32 | shift, ($VT131 = 1) if $ARGV[0] =~ /^-?-vt131$/; |
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33 | |
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34 | # vt100 wps = word processing roms |
|
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35 | # vt101 = vt102 - avo, but custom rom? really? |
|
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36 | # vt103 = vt100 + tu58 tape drive |
|
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37 | # vt125 = vt100 + gpo graphics processor |
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38 | # vt132 = vt100 + avo, stp |
|
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39 | # vt180 = vt100 + z80 cp/m |
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40 | |
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41 | if ($ARGV[0] =~ /^-/) { |
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42 | die <<EOF; |
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43 | |
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44 | VT102, A VT100/102/131 SIMULATOR |
|
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45 | |
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46 | Usage: |
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47 | |
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48 | $0 [option] [program [args]] |
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49 | |
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50 | Examples: |
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51 | |
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52 | $0 bash |
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53 | $0 telnet towel.blinkenlights.nl |
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54 | $0 curl http://artscene.textfiles.com/vt100/trekvid.vt |
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55 | $0 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
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56 | |
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57 | Option can be one of: |
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58 | |
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59 | --vt100 |
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60 | --vt100+avo |
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61 | --vt102 |
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62 | --vt131 |
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63 | |
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64 | Non-obvious special keys are: |
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65 | |
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66 | SET UP Home |
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67 | BACKSPACE Rubout |
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68 | CAPS LOCK Prior/PgUp |
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69 | NO SCROLL Next/PgDown |
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70 | BREAK End |
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71 | |
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72 | Set-Up Guide: |
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73 | |
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74 | http://vt100.net/docs/vt102-ug/chapter3.html#S3.6 |
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75 | |
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76 | Author: |
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77 | |
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78 | Marc Lehmann <vt102\@schmorp.de> |
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79 | |
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80 | EOF |
|
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81 | } |
|
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82 | |
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83 | ############################################################################# |
|
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84 | # ROM/hardware init |
|
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85 | |
|
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86 | my $PTY; # the pty we allocated, if any |
34 | my $KBD = 1; |
87 | my $KBD = 1; |
35 | |
88 | |
36 | ############################################################################# |
|
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37 | # rom initialising |
|
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38 | |
|
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39 | my $ROM = do { |
89 | my $ROMS = do { |
40 | binmode DATA; |
90 | binmode DATA; |
41 | local $/; |
91 | local $/; |
42 | <DATA> |
92 | <DATA> |
43 | }; |
93 | }; |
44 | |
94 | |
45 | 0x6001 == length $ROM or die "corrupted rom image"; |
95 | 0x6801 == length $ROMS or die "corrupted rom image"; |
46 | |
|
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47 | binmode STDOUT; |
|
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48 | |
96 | |
49 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
97 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
50 | |
98 | |
51 | # populate mem with rom contents |
99 | # populate mem with rom contents |
52 | if ($VT102) { |
100 | if ($VT102) { |
53 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x2000, 0x2000; |
101 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x2000, 0x2000; |
54 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROM, 0x4000, 0x2000; |
102 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROMS, 0x4000, 0x2000; |
|
|
103 | @M[0xa000 .. 0xa7ff] = unpack "C*", substr $ROMS, 0x6000, 0x0800 if $VT131; |
55 | } else { |
104 | } else { |
56 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000; |
105 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x0000, 0x2000; |
57 | } |
106 | } |
58 | |
107 | |
59 | ############################################################################# |
108 | ############################################################################# |
60 | # cpu registers and I/O support |
109 | # 8085 CPU registers and I/O support |
61 | |
|
|
62 | my $PTY; # the pty we allocated, if any |
|
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63 | my $PRSTATUS = 0; |
|
|
64 | |
110 | |
65 | # 8080/8085 registers |
111 | # 8080/8085 registers |
66 | # b, c, d, e, h, l, a |
112 | my ($A, $B, $C, $D, $E, $H, $L); # 8 bit general purpose |
67 | my ($A, $B, $C, $D, $E, $H, $L, $A); |
113 | my ($PC, $SP, $IFF); # program counter, stack pointer, interrupt flag |
68 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
114 | my ($FA, $FZ, $FS, $FP, $FC); # condition codes (psw) |
69 | |
115 | |
70 | my $RST = 0; # 8080 pending interrupts |
116 | my $RST = 0; # pending interrupts (external interrupt logic) |
71 | my $INTMASK = 7; # 8085 half interrupts |
117 | my $INTMASK = 7; # 8085 half interrupt mask |
72 | my $INTPEND = 0; # 8085 half interrupts |
118 | my $INTPEND = 0; # 8085 half interrupts pending |
73 | |
119 | |
74 | my $x; # dummy temp for instructions |
120 | my $CLK; # rather inexact clock, counts extended basic blocks |
75 | |
121 | |
76 | my $CLK; # rather inexact clock |
|
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77 | |
|
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78 | ############################################################################# |
122 | ############################################################################# |
79 | # the dreaded nvr1400 chip. not needed to get it going, but provided for reference |
123 | # the dreaded NVR1400 chip. not needed to get it going, but provided anyway |
80 | |
124 | |
81 | # nvram |
125 | # nvram |
82 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
126 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
83 | my $NVRADDR; |
127 | my $NVRADDR; |
84 | my $NVRDATA; |
128 | my $NVRDATA; |
… | |
… | |
93 | sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase |
137 | sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase |
94 | sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read |
138 | sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read |
95 | sub { }, # 7 standby |
139 | sub { }, # 7 standby |
96 | ); |
140 | ); |
97 | |
141 | |
98 | my @bitidx; |
142 | my @NVR_BITIDX; $NVR_BITIDX[1 << $_] = 9 - $_ for 0..9; |
99 | $bitidx[1 << $_] = 9 - $_ for 0..9; |
|
|
100 | |
143 | |
101 | # the nvr1400 state machine. what a monster |
144 | # the nvr1400 state machine. what a monster |
102 | sub nvr() { |
145 | sub nvr() { |
103 | my $a1 = $bitidx[(~$NVRADDR ) & 0x3ff]; |
146 | my $a1 = $NVR_BITIDX[(~$NVRADDR ) & 0x3ff]; |
104 | my $a0 = $bitidx[(~$NVRADDR >> 10) & 0x3ff]; |
147 | my $a0 = $NVR_BITIDX[(~$NVRADDR >> 10) & 0x3ff]; |
105 | |
|
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106 | # printf "NVR %02x A %020b %d %d D %02x\n", $NVRLATCH, $NVRADDR & 0xfffff, $a1, $a0, $NVRDATA; |
|
|
107 | |
148 | |
108 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
149 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
109 | } |
150 | } |
110 | |
151 | |
111 | ############################################################################# |
152 | ############################################################################# |
|
|
153 | # I/O ports - output |
112 | |
154 | |
113 | my $DC11 = 0; # 4 bit commands |
155 | my $DC11_REVERSE = 0; # light background? |
114 | my $DC12 = 0; |
|
|
115 | |
156 | |
116 | my $XON = 1; # false if terminal wants us to pause |
157 | my $XON = 1; # false if terminal wants us to pause |
117 | my $PUSARTCMD; |
158 | my $PUSARTCMD; |
118 | |
159 | |
|
|
160 | my $KSTATUS; # keyboard status (click + scan flag + leds) |
119 | my @KXMIT; # current scan queue |
161 | my @KXMIT; # current scan queue |
120 | my %KXMIT; # currently pressed keys |
162 | my %KXMIT; # currently pressed keys |
121 | my @KQUEUE; # key event queue |
163 | my @KQUEUE; # key event queue |
122 | my $KXCNT; # count for debouncew |
164 | my $KXCNT; # count for debouncew |
123 | my @PUSARTRECV; |
165 | |
124 | my $KSTATUS; |
166 | my @PUSARTRECV; # serial input (to terminal) queue |
125 | |
167 | |
126 | sub out_00 { # pusartdata |
168 | sub out_00 { # pusartdata |
127 | # handle xon/xoff, but also pass it through |
169 | # handle xon/xoff, but also pass it through |
128 | if ($_[0] == 0x13) { |
170 | if ($_[0] == 0x13) { |
129 | $XON = 0; |
171 | $XON = 0; |
… | |
… | |
136 | syswrite $PTY, chr $_[0]; |
178 | syswrite $PTY, chr $_[0]; |
137 | |
179 | |
138 | $INTPEND |= 1; |
180 | $INTPEND |= 1; |
139 | } |
181 | } |
140 | |
182 | |
141 | sub out_01 { |
183 | sub out_01 { # pusartcmd |
142 | $PUSARTCMD = shift; |
184 | $PUSARTCMD = shift; |
143 | |
185 | |
144 | $INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy |
186 | $INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy |
145 | $INTPEND |= 2 if $PUSARTCMD & 0x04 && !@PUSARTRECV; # VT102, 6.5 rxrdy, needed for some reason |
187 | $INTPEND |= 2 if $PUSARTCMD & 0x04 && !@PUSARTRECV; # VT102, 6.5 rxrdy, needed for some reason |
146 | } |
188 | } |
147 | |
189 | |
148 | sub out_02 { } # baudrate generator |
190 | sub out_02 { } # baudrate generator |
149 | |
191 | |
150 | sub out_23 { } # unknown |
192 | sub out_23 { } # vt102 unknown |
151 | sub out_27 { } # unknown |
193 | sub out_27 { } # vt102 unknown |
152 | sub out_2f { } # unknown, connected to in 0f |
194 | sub out_2f { } # vt102 unknown, connected to in 0f |
153 | |
195 | |
154 | sub out_42 { } # brightness |
196 | sub out_42 { } # brightness |
155 | |
197 | |
156 | sub out_62 { |
198 | sub out_62 { # nvr latch register (4 bits) |
157 | $NVRLATCH = shift; |
199 | $NVRLATCH = shift; |
158 | } |
200 | } |
159 | |
201 | |
160 | sub out_a2 { $DC11 = shift } |
202 | sub out_a2 { # device control 011 |
|
|
203 | my $dc11 = 0x0f & shift; |
|
|
204 | |
|
|
205 | $DC11_REVERSE = 1 if $dc11 == 0b1010; |
|
|
206 | $DC11_REVERSE = 0 if $dc11 == 0b1011; |
|
|
207 | } |
|
|
208 | |
161 | sub out_c2 { } # unknown |
209 | sub out_c2 { } # unknown |
162 | sub out_d2 { $DC12 = shift } |
210 | sub out_d2 { } # device control 012, 0..3 == 80c/132c/60hz/50hz |
163 | |
211 | |
164 | sub out_82 { |
212 | sub out_82 { # keyboard txmit |
165 | # keyboard |
213 | # CLICK STARTSCAN ONLINE LOCKED | L1 L2 L3 L4 (vt100) |
166 | |
|
|
167 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INSERT L1(?) |
214 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INS L1 (vt102) |
168 | # CLICK STARTSCAN ONLINE LOCKED | LED1 LED2 LED3 LED4 |
|
|
169 | $KSTATUS = $_[0]; |
215 | $KSTATUS = $_[0]; |
170 | |
216 | |
171 | # start new scan unless scan in progress |
217 | # start new scan unless scan is in progress |
172 | if (($_[0] & 0x40) && !@KXMIT) { |
218 | if (($_[0] & 0x40) && !@KXMIT) { |
173 | # do not reply with keys in locked mode |
219 | # do not reply with keys in locked mode |
174 | # or during post (0xff), |
220 | # or during post (0xff), |
175 | # mostly to skip init and not fail POST, |
221 | # mostly to skip init and not fail POST, |
176 | # and to send startup keys only when terminal is ready |
222 | # and to send startup keys only when terminal is ready |
… | |
… | |
196 | $RST |= 1; |
242 | $RST |= 1; |
197 | } |
243 | } |
198 | } |
244 | } |
199 | |
245 | |
200 | ############################################################################# |
246 | ############################################################################# |
|
|
247 | # I/O ports - input |
201 | |
248 | |
202 | my $NVRBIT; |
249 | my $NVRBIT; # the current nvr data bit |
203 | my $LBA; |
250 | my $LBA6; # twice the frequenxy of LBA7 |
204 | |
251 | |
205 | sub in_00 { # pusart data |
252 | sub in_00 { # pusart data |
206 | # interrupt not generated here, because infinite |
253 | # interrupt not generated here, because infinite |
207 | # speed does not go well with the vt102. |
254 | # speed does not go well with the vt102. |
208 | |
255 | |
… | |
… | |
212 | sub in_01 { # pusart status |
259 | sub in_01 { # pusart status |
213 | # DSR SYNDET FE OE | PE TXEMPTY RXRDY TXRDY |
260 | # DSR SYNDET FE OE | PE TXEMPTY RXRDY TXRDY |
214 | 0x85 + (@PUSARTRECV && 0x02) |
261 | 0x85 + (@PUSARTRECV && 0x02) |
215 | } |
262 | } |
216 | |
263 | |
217 | sub in_22 { # modem buffer(?) |
264 | sub in_22 { # modem buffer |
218 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
265 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
219 | 0x20 |
266 | 0x20 |
220 | } |
267 | } |
221 | |
268 | |
222 | sub in_0f { } # unknown, connected to out 2f |
269 | sub in_0f { 0xff } # vt102 unknown, connected to out 2f |
223 | |
270 | |
224 | sub in_42 { # flag buffer |
271 | sub in_42 { # flag buffer |
225 | ++$LBA; |
272 | ++$LBA6; |
226 | |
273 | |
227 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2; |
274 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA6 & 0x3) == 0x2; |
228 | |
275 | |
229 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
276 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
230 | |
277 | |
231 | my $f = 0x85 | $NVRBIT; |
278 | my $f = 0x85 | $NVRBIT; |
232 | |
279 | |
233 | $f |= 0x02 unless $AVO; |
280 | $f |= 0x02 unless $AVO; |
234 | $f |= 0x40 if $LBA & 0x2; |
281 | $f |= 0x40 if $LBA6 & 0x2; |
235 | |
282 | |
236 | $f |
283 | $f |
237 | } |
284 | } |
238 | |
285 | |
239 | sub in_82 { # tbmt keyboard uart |
286 | sub in_82 { # tbmt keyboard uart |
… | |
… | |
241 | |
288 | |
242 | $RST |= 1; |
289 | $RST |= 1; |
243 | shift @KXMIT |
290 | shift @KXMIT |
244 | } |
291 | } |
245 | |
292 | |
246 | sub in_03 { 0xff } # unknown, printer uart input? |
293 | sub in_03 { 0xff } # vt102 unknown, printer uart input? |
247 | sub in_0b { 0xff } # unknown |
294 | sub in_0b { 0xff } # vt102 unknown |
248 | sub in_17 { 0xff } # unknown, printer status clear by reading? |
295 | sub in_17 { 0xff } # vt102 unknown, printer status clear by reading? |
249 | sub in_1b { 0xff } # unknown |
296 | sub in_1b { 0xff } # vt102 unknown |
250 | |
297 | |
251 | ############################################################################# |
298 | ############################################################################# |
|
|
299 | # 8085 cpu opcodes and flag handling |
252 | |
300 | |
|
|
301 | my $x; # dummy scratchpad for opcodes |
|
|
302 | |
253 | sub sf { # set flags (ZSC - AP not implemented) |
303 | sub sf { # set flags, full version (ZSC - AP not implemented) |
|
|
304 | $FS = $_[0] & 0x080; |
|
|
305 | $FZ = !($_[0] & 0x0ff); |
|
|
306 | $FC = $_[0] & 0x100; |
|
|
307 | |
|
|
308 | $_[0] &= 0xff; |
|
|
309 | } |
|
|
310 | |
|
|
311 | sub sf8 { # set flags, for 8-bit results (ZSC - AP not implemented) |
|
|
312 | $FS = $_[0] & 0x080; |
|
|
313 | $FZ = !($_[0] & 0x0ff); |
|
|
314 | $FC = 0; |
|
|
315 | } |
|
|
316 | |
|
|
317 | sub sf_nc { # set flags, except carry |
254 | $FS = $_[0] & 0x080; |
318 | $FS = $_[0] & 0x080; |
255 | $FZ = ($_[0] & 0x0ff) == 0; |
319 | $FZ = ($_[0] & 0x0ff) == 0; |
256 | $FC = $_[0] & 0x100; |
|
|
257 | |
320 | |
258 | $_[0] & 0xff |
321 | $_[0] &= 0xff; |
259 | } |
322 | } |
260 | |
323 | |
261 | sub sf_nc { # set flags except carry |
324 | # opcode table |
262 | $FS = $_[0] & 0x080; |
|
|
263 | $FZ = ($_[0] & 0x0ff) == 0; |
|
|
264 | |
|
|
265 | $_[0] & 0xff |
|
|
266 | } |
|
|
267 | |
|
|
268 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0 .. 255; |
325 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0x00 .. 0xff; |
269 | my @ops; |
|
|
270 | |
326 | |
271 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
327 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); # r/m encoding |
272 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
328 | my @cc = ('!$FZ', '$FZ', '!$FC', '$FC', 'die;', 'die;', '!$FS', '$FS'); # cc encoding. die == unimplemented $FP parity |
|
|
329 | |
|
|
330 | $op[0x00] = ''; # nop |
273 | |
331 | |
274 | # mov r,r / r,M / M,r |
332 | # mov r,r / r,M / M,r |
275 | for my $s (0..7) { |
333 | for my $s (0..7) { |
276 | for my $d (0..7) { |
334 | for my $d (0..7) { |
277 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; |
335 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; # mov |
278 | } |
336 | } |
279 | } |
337 | } |
280 | |
338 | |
281 | $op[0x00] = ''; |
339 | $op[0x76] = 'die "HLT"'; # hlt (mov m,m) |
|
|
340 | |
|
|
341 | # mvi r / M |
|
|
342 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
282 | |
343 | |
283 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
344 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
284 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
345 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
285 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
346 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
286 | $op[0x31] = '$SP = IMM16' ; # lxi #d# 0xf000 because of limited stack |
347 | $op[0x31] = '$SP = IMM16' ; # lxi |
287 | |
348 | |
288 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
349 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
289 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
350 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
290 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
351 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
291 | |
352 | |
|
|
353 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
|
|
354 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
|
|
355 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
|
|
356 | |
|
|
357 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
|
|
358 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
|
|
359 | |
292 | sub inxdcx($$$) { |
360 | sub inxdcx($$$) { |
293 | $x = ($_[0] * 256 + $_[1] + $_[2]) & 0xffff; |
361 | $x = $_[0] * 256 + $_[1] + $_[2]; |
294 | $_[0] = $x >> 8; |
362 | ($_[0], $_[1]) = (($x >> 8) & 0xff, $x & 0xff); |
295 | $_[1] = $x & 0xff; |
|
|
296 | } |
363 | } |
297 | |
364 | |
298 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
365 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
299 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
366 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
300 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
367 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
… | |
… | |
303 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
370 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
304 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
371 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
305 | $op[0x3b] = '--$SP' ; # dcx |
372 | $op[0x3b] = '--$SP' ; # dcx |
306 | |
373 | |
307 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
374 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
308 | $op[0x04 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] + 1" for 0..7; # inr |
|
|
309 | $op[0x05 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] - 1" for 0..7; # dcr |
|
|
310 | |
|
|
311 | # mvi r / M |
|
|
312 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
375 | $op[0x04 + $_ * 8] = "sf_nc ++$reg[$_]" for 0..7; # inr |
|
|
376 | $op[0x05 + $_ * 8] = "sf_nc --$reg[$_]" for 0..7; # dcr |
|
|
377 | |
|
|
378 | $op[0x07] = ' $FC = $A & 0x80; $A = (($A << 1) + ($FC && 0x01)) & 0xff '; # rlc |
|
|
379 | $op[0x17] = ' ($FC, $A) = ($A & 0x80, (($A << 1) + ($FC && 0x01)) & 0xff)'; # ral |
|
|
380 | $op[0x0f] = ' $FC = $A & 0x01; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
|
|
381 | $op[0x1f] = ' ($FC, $A) = ($A & 0x01, ($A >> 1) | ($FC && 0x80))'; # rar |
313 | |
382 | |
314 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
383 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
315 | # wasted three of my best days with mindless vt102 rom reverse engineering |
384 | # wasted three of my best days with mindless vt102 rom reverse engineering |
316 | sub dad { |
385 | sub dad { |
317 | $x = $H * 256 + $L + $_[0]; |
386 | $x = $H * 256 + $L + $_[0]; |
… | |
… | |
323 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
392 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
324 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
393 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
325 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
394 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
326 | $op[0x39] = 'dad $SP '; # dad |
395 | $op[0x39] = 'dad $SP '; # dad |
327 | |
396 | |
328 | $op[0x07] = ' $FC = $A >> 7; $A = ($A * 2 + $FC) & 0xff '; # rlc |
397 | $op[0x2f] = '$A ^= 0xff'; # cma |
329 | $op[0x17] = ' ($FC, $A) = ($A >> 7, ($A * 2 + $FC) & 0xff)'; # ral |
|
|
330 | |
398 | |
331 | $op[0x0f] = ' $FC = $A & 1; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
399 | $op[0x80 + $_] = 'sf $A += + ' . $reg[$_] for 0..7; # add |
332 | $op[0x1f] = ' ($FC, $A) = ($A & 1, ($A >> 1) | ($FC && 0x80))'; # rar |
400 | $op[0x88 + $_] = 'sf $A += ($FC && 1) + ' . $reg[$_] for 0..7; # adc |
|
|
401 | $op[0x90 + $_] = 'sf $A -= + ' . $reg[$_] for 0..7; # sub |
|
|
402 | $op[0x98 + $_] = 'sf $A -= ($FC && 1) + ' . $reg[$_] for 0..7; # sbb |
|
|
403 | $op[0xa0 + $_] = 'sf8 $A &= ' . $reg[$_] for 0..7; # ana |
|
|
404 | $op[0xa8 + $_] = 'sf8 $A ^= ' . $reg[$_] for 0..7; # xra |
|
|
405 | $op[0xb0 + $_] = 'sf8 $A |= ' . $reg[$_] for 0..7; # ora |
|
|
406 | $op[0xb8 + $_] = 'sf $x = $A - ' . $reg[$_] for 0..7; # cmp |
|
|
407 | # possible todo: optimize ora a, maybe xra a, possibly ana |
333 | |
408 | |
334 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
409 | $op[0xc6] = 'sf $A += IMM8'; # adi |
335 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
410 | $op[0xd6] = 'sf $A -= IMM8'; # sui |
336 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
411 | $op[0xe6] = 'sf8 $A &= IMM8'; # ani |
|
|
412 | $op[0xee] = 'sf8 $A ^= IMM8'; # xri |
|
|
413 | $op[0xf6] = 'sf8 $A |= IMM8'; # ori |
|
|
414 | $op[0xfe] = 'sf $A - IMM8'; # cpi |
|
|
415 | # ce ACI NYI, apparently unused |
|
|
416 | # de SBI NYI, apparently unused |
337 | |
417 | |
|
|
418 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
|
|
419 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
|
|
420 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
421 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
422 | |
|
|
423 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
424 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
425 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
426 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = ($x & 0x80, $x & 0x40, $x & 0x10, $x & 0x04, $x & 0x01)'; # pop psw |
|
|
427 | |
|
|
428 | $op[0xc2 + $_ * 8] = 'BRA IMM16 if ' . $cc[$_] for 0..7; # jcc |
|
|
429 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
430 | |
|
|
431 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) if ' . $cc[$_] for 0..7; # ccc |
|
|
432 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
433 | |
|
|
434 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 if ' . $cc[$_] for 0..7; # rcc |
|
|
435 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
436 | |
|
|
437 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
438 | |
|
|
439 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
440 | # f9 SPHL NYI, apparently unused |
|
|
441 | |
|
|
442 | $op[0x37] = '$FC = 1 '; # stc |
|
|
443 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
444 | |
|
|
445 | $op[0xd3] = 'OUT'; # out |
|
|
446 | $op[0xdb] = 'IN'; # in |
|
|
447 | |
|
|
448 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
449 | |
|
|
450 | # e3 xthl NYI # @ 917b in e69, hl <-> (sp) |
|
|
451 | |
338 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
452 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (8085, incomplete) |
339 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
453 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (8085, incomplete) |
340 | |
454 | |
341 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
455 | $op[0xf3] = '$IFF = 0'; # di |
342 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
456 | $op[0xfb] = '$IFF = 1'; # ei |
343 | |
457 | |
344 | # yeah, the fucking setup screens actually use daa... |
458 | # yeah, the fucking setup screen actually uses daa... |
345 | $op[0x27] = ' |
459 | $op[0x27] = ' |
346 | my ($h, $l); |
460 | my ($h, $l); |
347 | |
461 | |
348 | ($h, $l) = ($A >> 4, $A & 15); |
462 | ($h, $l) = ($A >> 4, $A & 15); |
349 | |
463 | |
350 | if ($l > 9 || $FA) { |
464 | if ($l > 9 || $FA) { |
351 | $A = sf $A + 6; |
465 | sf $A += 6; |
352 | ($h, $l) = ($A >> 4, $A & 15); |
466 | ($h, $l) = ($A >> 4, $A & 15); |
353 | } |
467 | } |
354 | |
468 | |
355 | if ($h > 9 || $FC) { |
469 | if ($h > 9 || $FC) { |
356 | $h += 6; |
470 | $h += 6; |
357 | $A = ($h * 16 + $l) & 0xff; |
471 | $A = ($h * 16 + $l) & 0xff; |
358 | } |
472 | } |
359 | '; # daa, almost certainly borked, also, acarry not set by sf |
473 | '; # daa, almost certainly borked, also, acarry not set by sf |
360 | |
474 | |
361 | $op[0x2f] = '$A ^= 0xff'; # cma |
|
|
362 | |
|
|
363 | $op[0x37] = '$FC = 1 '; # stc |
|
|
364 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
365 | |
|
|
366 | $op[0x76] = 'die "HLT"'; # hlt |
|
|
367 | |
|
|
368 | $op[0x80 + $_] = '$A = sf $A + ' . $reg[$_] for 0..7; # add |
|
|
369 | $op[0x88 + $_] = '$A = sf $A + $FC + ' . $reg[$_] for 0..7; # adc |
|
|
370 | $op[0x90 + $_] = '$A = sf $A - ' . $reg[$_] for 0..7; # sub |
|
|
371 | $op[0x98 + $_] = '$A = sf $A - $FC - ' . $reg[$_] for 0..7; # sbb |
|
|
372 | $op[0xa0 + $_] = '$A = sf $A & ' . $reg[$_] for 0..7; # ana |
|
|
373 | $op[0xa8 + $_] = '$A = sf $A ^ ' . $reg[$_] for 0..7; # xra |
|
|
374 | $op[0xb0 + $_] = '$A = sf $A | ' . $reg[$_] for 0..7; # ora |
|
|
375 | $op[0xb8 + $_] = ' sf $A - ' . $reg[$_] for 0..7; # cmp |
|
|
376 | # possible todo: optimize ora a, maybe xra a |
|
|
377 | |
|
|
378 | $op[0xc6 + $_] = '$A = sf $A + IMM8'; # adi |
|
|
379 | $op[0xd6 + $_] = '$A = sf $A - IMM8'; # sui |
|
|
380 | $op[0xe6 + $_] = '$A = sf $A & IMM8'; # ani |
|
|
381 | $op[0xee + $_] = '$A = sf $A ^ IMM8'; # xri |
|
|
382 | $op[0xf6 + $_] = '$A = sf $A | IMM8'; # ori |
|
|
383 | $op[0xfe + $_] = ' sf $A - IMM8'; # cpi |
|
|
384 | |
|
|
385 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
386 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
387 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
388 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = (!!($x & 0x80), !!($x & 0x40), !!($x & 0x10), !!($x & 0x04), !!($x & 0x01))'; # pop psw |
|
|
389 | |
|
|
390 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
391 | |
|
|
392 | $op[0xc2 + $_ * 8] = 'BRA IMM16 ' . $cc[$_] for 0..7; # jcc |
|
|
393 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
394 | |
|
|
395 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) ' . $cc[$_] for 0..7; # ccc |
|
|
396 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
397 | |
|
|
398 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
399 | |
|
|
400 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 ' . $cc[$_] for 0..7; # rcc |
|
|
401 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
402 | |
|
|
403 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
|
|
404 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
|
|
405 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
406 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
407 | |
|
|
408 | $op[0xd3] = 'OUT'; # out |
|
|
409 | $op[0xdb] = 'IN'; # in |
|
|
410 | |
|
|
411 | # e3 xthl @ 917b, hl <-> (sp) |
|
|
412 | |
|
|
413 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
414 | |
|
|
415 | $op[0xf3] = '$IFF = 0'; # DI |
|
|
416 | $op[0xfb] = '$IFF = 1'; # EI |
|
|
417 | |
|
|
418 | @ops = @op; # for debugging #d# |
|
|
419 | |
|
|
420 | ############################################################################# |
475 | ############################################################################# |
|
|
476 | # debug |
421 | |
477 | |
422 | # print cpu status, for debugging |
478 | # print cpu status, for debugging |
423 | sub status { |
479 | sub status { |
424 | my $PC = shift || $PC; |
480 | my $PC = shift || $PC; |
425 | |
481 | |
… | |
… | |
429 | ($FZ ? "1" : "0") |
485 | ($FZ ? "1" : "0") |
430 | . ($FS ? "1" : "0") |
486 | . ($FS ? "1" : "0") |
431 | . ($FC ? "1" : "0") |
487 | . ($FC ? "1" : "0") |
432 | . ($FA ? "1" : "0") |
488 | . ($FA ? "1" : "0") |
433 | . ($FP ? "1" : "0"), |
489 | . ($FP ? "1" : "0"), |
434 | $M[$PC], $ops[$M[$PC]]; |
490 | $M[$PC], $op[$M[$PC]]; |
435 | } |
491 | } |
436 | |
492 | |
437 | ############################################################################# |
493 | ############################################################################# |
|
|
494 | # video emulation |
438 | |
495 | |
439 | my @chr = ( |
496 | binmode STDOUT; |
|
|
497 | |
|
|
498 | my @CHARMAP = ( # acschars / chars 0..31 |
440 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
499 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
441 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
500 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
442 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
501 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
443 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
502 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
444 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
503 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
… | |
… | |
446 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
505 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
447 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
506 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
448 | (map chr, 0x020 .. 0x7e), |
507 | (map chr, 0x020 .. 0x7e), |
449 | ); |
508 | ); |
450 | |
509 | |
451 | utf8::encode $_ for @chr; |
510 | utf8::encode $_ for @CHARMAP; |
452 | |
511 | |
453 | sub prscr { |
512 | my @SGR; # sgr sequences for attributes |
|
|
513 | |
|
|
514 | for (0x00 .. 0xff) { |
|
|
515 | my $sgr = ""; |
|
|
516 | |
|
|
517 | # ~1 sgr 5 blink |
|
|
518 | # ~2 sgr 4 underline |
|
|
519 | # ~4 sgr 1 bold |
|
|
520 | # 0x80 in attr, sgr 7, reversed |
|
|
521 | |
|
|
522 | $sgr .= ";5" unless $_ & 0x01; |
|
|
523 | $sgr .= ";4" unless $_ & 0x02; |
|
|
524 | $sgr .= ";1" unless $_ & 0x04; |
|
|
525 | $sgr .= ";7" if $_ & 0x80; |
|
|
526 | |
|
|
527 | $SGR[$_] = "\e[${sgr}m"; |
|
|
528 | } |
|
|
529 | |
|
|
530 | my @LED = $VT102 |
|
|
531 | ? qw(L1 INSERT DSR CTS LOCKED LOCAL SCAN BEEP) |
|
|
532 | : qw(L4 L3 L2 L1 LOCKED LOCAL SCAN BEEP); |
|
|
533 | |
|
|
534 | my $CURSOR_IS_ON; |
|
|
535 | |
|
|
536 | # display screen |
|
|
537 | sub display { |
|
|
538 | # this is for the powersave mode - check whether the cursor is on here, |
|
|
539 | # and only allow powersave later when it was on the last display time |
|
|
540 | $CURSOR_IS_ON = $M[$VT102 ? 0x207b : 0x21ba]; |
|
|
541 | |
454 | my $i = 0x2000; |
542 | my $i = 0x2000; |
455 | |
543 | |
456 | 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; |
|
|
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"); |
457 | |
549 | |
458 | line: |
550 | line: |
459 | 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 | |
460 | $scr .= sprintf "%2d |", ++$y; |
554 | $scr .= sprintf "%2d \xe2\x94\x82", $y; |
461 | |
555 | |
462 | for (0..140) { |
556 | for (0..139) { |
463 | my $c = $M[$i++]; |
557 | my $c = $M[$i]; |
464 | |
|
|
465 | # printf "%04x %02x\n", $i-1,$c; |
|
|
466 | |
558 | |
467 | if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
559 | if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
468 | $scr .= "|\x1b[K\n"; |
560 | $scr .= "\e[m\xe2\x94\x82\e[K\n"; |
469 | |
561 | |
470 | my $a1 = $M[$i++]; |
562 | my $a1 = $M[$i + 1]; |
471 | my $a0 = $M[$i++]; |
563 | my $a0 = $M[$i + 2]; |
472 | |
564 | |
473 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
565 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
474 | |
566 | |
475 | next line; |
567 | next line; |
476 | } |
568 | } |
477 | |
569 | |
478 | $scr .= "\x1b[7m" if $c & 0x80; |
570 | my $sgr = $SGR[ ($M[$i++ + 0x1000] & 15) | ($c & 0x80)]; |
479 | $scr .= $chr[$c & 0x7f] // sprintf "[%02x]", $c & 0x7f; |
571 | |
480 | $scr .= "\x1b[m" if $c & 0x80; |
572 | $scr .= $prev_sgr = $sgr if $sgr ne $prev_sgr; |
|
|
573 | |
|
|
574 | $scr .= $CHARMAP[$c & 0x7f]; |
481 | } |
575 | } |
482 | |
576 | |
483 | $scr .= "\x1b[K\noverflow\x1b[K\n"; |
577 | $scr .= "\e[K\nvideo overflow\e[K\n"; |
484 | last; |
578 | last; |
485 | } |
579 | } |
486 | |
580 | |
487 | if (0) { |
|
|
488 | $scr .= "\x1b[K\n"; |
|
|
489 | for my $o (0x200 .. 0x232) { |
|
|
490 | $scr .= sprintf "%04x:", $o * 16; |
|
|
491 | for (0..15) { |
|
|
492 | $scr .= sprintf " %02x", $M[$o * 16 + $_]; |
|
|
493 | } |
|
|
494 | $scr .= "\x1b[K\n"; |
|
|
495 | } |
|
|
496 | } |
|
|
497 | |
|
|
498 | $scr .= "\x1b[J"; |
581 | $scr .= "\e[m\e[J"; |
499 | |
582 | |
500 | syswrite STDOUT, $scr; |
583 | syswrite STDOUT, $scr; |
501 | } |
584 | } |
502 | |
585 | |
503 | ############################################################################# |
586 | ############################################################################# |
|
|
587 | # keyboard handling |
504 | |
588 | |
505 | if (@ARGV) { |
589 | # 0x080 shift, 0x100 ctrl |
506 | require IO::Pty; |
590 | my %KEYMAP = ( |
507 | $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, # PF1 |
|
|
620 | "\e[12~" => 0x42, # PF2 |
|
|
621 | "\e[13~" => 0x31, # PF3 |
|
|
622 | "\e[14~" => 0x41, # PF4 |
|
|
623 | ); |
508 | |
624 | |
509 | 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 |
510 | |
628 | |
511 | $PTY->set_winsize (24, 80); |
629 | $KEYMAP{"\x1f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
|
|
630 | $KEYMAP{"\x20" ^ $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
512 | |
631 | |
513 | unless (fork) { |
632 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
514 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
633 | $KEYMATCH = qr{^($KEYMATCH)}s; |
515 | |
634 | |
516 | close $PTY; |
635 | my %KMOD; # currently pressed modifier keys |
517 | |
636 | |
518 | open STDIN , "<&", $slave; |
637 | sub key { |
519 | open STDOUT, ">&", $slave; |
638 | my ($key) = @_; |
520 | open STDERR, ">&", $slave; |
|
|
521 | |
639 | |
522 | system "stty ixoff erase ^H"; |
640 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $KMOD{0x7c}; # ctrl-up |
|
|
641 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $KMOD{0x7d}; # shift-up |
523 | |
642 | |
524 | $PTY->make_slave_controlling_terminal; |
643 | push @KQUEUE, 0x7c if $key & 0x100 && !$KMOD{0x7c}++; # ctrl-down |
525 | $PTY->close_slave; |
644 | push @KQUEUE, 0x7d if $key & 0x080 && !$KMOD{0x7d}++; # shift-down |
526 | |
645 | |
527 | exec @ARGV; |
646 | $key &= 0x7f; |
528 | } |
647 | push @KQUEUE, $key, -$key; |
529 | |
|
|
530 | $PTY->close_slave; |
|
|
531 | |
|
|
532 | } else { |
|
|
533 | open $PTY, "</dev/null" or die;#d |
|
|
534 | } |
648 | } |
535 | |
649 | |
536 | ############################################################################# |
650 | my $STDIN_BUF; |
537 | |
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"; # -isig |
|
|
662 | eval q{ sub END { system "stty sane" } }; |
|
|
663 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
|
|
664 | } |
|
|
665 | |
|
|
666 | ############################################################################# |
538 | # 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 | |
539 | @KQUEUE = ( |
670 | @KQUEUE = ( |
540 | 0x7b, -0x7b, # setup |
671 | 0x7b, -0x7b, # setup |
541 | 0, # delay |
672 | 0, # delay |
542 | 0x28, -0x28, # 4, toggle local/online |
673 | 0x28, -0x28, # 4, toggle local/online |
543 | 0x38, -0x38, # 5, setup b |
674 | 0x38, -0x38, # 5, setup b |
… | |
… | |
554 | 0x37, -0x37, # 6 toggle wrap around |
685 | 0x37, -0x37, # 6 toggle wrap around |
555 | 0x7b, -0x7b, # leave setup |
686 | 0x7b, -0x7b, # leave setup |
556 | ); |
687 | ); |
557 | |
688 | |
558 | ############################################################################# |
689 | ############################################################################# |
|
|
690 | # process/pty management |
559 | |
691 | |
560 | # 0x80 shift, 0x100 ctrl, 0x200 toggle |
692 | if (1) { |
561 | my %KEYMAP = ( |
693 | require IO::Pty; |
562 | "\t" => 0x3a, |
694 | $PTY = IO::Pty->new; |
563 | "\r" => 0x64, |
|
|
564 | "\n" => 0x44, |
|
|
565 | |
695 | |
566 | # hardcoded rxvt keys |
696 | my $slave = $PTY->slave; |
567 | "\e" => 0x2a, # ESC |
|
|
568 | "\e[3~" => 0x03, # DC |
|
|
569 | "\e[5~" => 0x7e, # CAPS LOCK (prior) |
|
|
570 | "\e[6~" => 0x6a, # NO SCROLL (next) |
|
|
571 | "\e[A" => 0x30, # UP |
|
|
572 | "\e[B" => 0x22, # DOWN |
|
|
573 | "\e[C" => 0x10, # RIGHT |
|
|
574 | "\e[D" => 0x20, # LEFT |
|
|
575 | "\e[a" => 0x30 | 0x080, # UP |
|
|
576 | "\e[b" => 0x22 | 0x080, # DOWN |
|
|
577 | "\e[c" => 0x10 | 0x080, # RIGHT |
|
|
578 | "\e[d" => 0x20 | 0x080, # LEFT |
|
|
579 | "\e[7~" => 0x7b, # SETUP (home) |
|
|
580 | "\e[8~" => 0x23, # BREAK (end) |
|
|
581 | "\e[8\$" => 0x23 | 0x080, # SHIFT BREAK / DISCONNECT (shift-end) |
|
|
582 | "\x7f" => 0x33, # BACKSPACE |
|
|
583 | |
697 | |
584 | "\e[11~" => 0x32, # F1 |
698 | $PTY->set_winsize (24, 80); |
585 | "\e[11~" => 0x42, # F2 |
|
|
586 | "\e[11~" => 0x31, # F3 |
|
|
587 | "\e[11~" => 0x41, # F4 |
|
|
588 | ); |
|
|
589 | |
699 | |
590 | @KEYMAP{map chr, 0x20..0x40} = unpack "C*", pack "H*", |
700 | unless (fork) { |
591 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9"; |
701 | $ENV{LC_ALL} = "C"; |
|
|
702 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
592 | |
703 | |
593 | @KEYMAP{map chr, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
704 | close $PTY; |
594 | "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; |
|
|
595 | |
705 | |
596 | $KEYMAP{"\x3f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
706 | open STDIN , "<&", $slave; |
597 | $KEYMAP{uc $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
707 | open STDOUT, ">&", $slave; |
|
|
708 | open STDERR, ">&", $slave; |
598 | |
709 | |
599 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
710 | system "stty ixoff erase ^H"; |
600 | $KEYMATCH = qr{^($KEYMATCH)}s; |
|
|
601 | |
711 | |
602 | sub key { |
712 | $PTY->make_slave_controlling_terminal; |
603 | my ($key) = @_; |
713 | $PTY->close_slave; |
604 | |
714 | |
605 | state %MOD; |
715 | @ARGV = "sh" unless @ARGV; |
|
|
716 | exec @ARGV; |
|
|
717 | } |
606 | |
718 | |
607 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $MOD{0x7c}; # ctrl-up |
719 | $PTY->close_slave; |
608 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $MOD{0x7d}; # shift-up |
720 | } else { |
609 | |
721 | open $PTY, "+</dev/null" |
610 | push @KQUEUE, 0x7c if $key & 0x100 && !$MOD{0x7c}++; # ctrl-down |
722 | or die "/dev/null: $!"; |
611 | push @KQUEUE, 0x7d if $key & 0x080 && !$MOD{0x7d}++; # shift-down |
|
|
612 | |
|
|
613 | $key &= 0x7f; |
|
|
614 | push @KQUEUE, $key, -$key; |
|
|
615 | } |
723 | } |
616 | |
724 | |
617 | my $STDIN_BUF; |
|
|
618 | |
|
|
619 | sub stdin_parse { |
|
|
620 | key $KEYMAP{$1} |
|
|
621 | while $STDIN_BUF =~ s/$KEYMATCH//; |
|
|
622 | |
|
|
623 | # skip input we can't decipher |
|
|
624 | substr $STDIN_BUF, 0, 1, ""; |
|
|
625 | } |
|
|
626 | |
|
|
627 | if ($KBD) { |
|
|
628 | system "stty -icanon -icrnl -inlcr -echo min 1 time 0"; |
|
|
629 | eval q{ sub END { system "stty sane" } }; |
|
|
630 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
|
|
631 | } |
|
|
632 | |
|
|
633 | ############################################################################# |
725 | ############################################################################# |
|
|
726 | # the actual hardware simulator |
634 | |
727 | |
635 | my @ICACHE; # compiled instruction cache |
728 | my @ICACHE; # compiled instruction/basic block cache |
636 | |
729 | |
|
|
730 | my $POWERSAVE; # powersave counter |
|
|
731 | |
|
|
732 | my $RIN; # libev for the less well-off |
|
|
733 | |
|
|
734 | (vec $RIN, 0, 1) = 1 if $KBD; |
|
|
735 | (vec $RIN, fileno $PTY, 1) = 1 if $PTY; |
|
|
736 | |
637 | # the cpu |
737 | # the cpu. |
638 | while () { |
738 | while () { |
639 | |
|
|
640 | # execute extended basic blocks |
739 | # execute an extended basic block |
641 | $PC = ($ICACHE[$PC] ||= do { |
740 | $PC = ($ICACHE[$PC] ||= do { |
642 | my $pc = $PC; |
741 | my $pc = $PC; |
643 | |
742 | |
644 | my $insn = ""; |
743 | my $insn = ""; |
645 | |
744 | |
646 | # the jit compiler |
745 | # the jit compiler |
647 | for (0..15) { |
746 | for (0..31) { |
648 | |
|
|
649 | # optional tracing support |
|
|
650 | if (0) { |
|
|
651 | $insn .= qq< |
|
|
652 | if (\$PRSTATUS) { |
|
|
653 | status $pc; |
|
|
654 | die unless --\$PRSTATUS; |
|
|
655 | } |
|
|
656 | >; |
|
|
657 | } |
|
|
658 | |
|
|
659 | my $imm; |
747 | my $imm; |
660 | my $op = $op[$M[$pc++]]; |
748 | my $op = $op[$M[$pc++]]; |
661 | |
749 | |
662 | for ($op) { |
750 | for ($op) { |
663 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
751 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
… | |
… | |
668 | |
756 | |
669 | s/\bPC\b/$pc/ge; # PC at end of insn |
757 | s/\bPC\b/$pc/ge; # PC at end of insn |
670 | s/\bBRA\b/return/g; # conditional jump |
758 | s/\bBRA\b/return/g; # conditional jump |
671 | s/\bJMP\b(.*)/$1\x00/sg; # unconditional jump |
759 | s/\bJMP\b(.*)/$1\x00/sg; # unconditional jump |
672 | |
760 | |
673 | s/\bIN\b/ sprintf "\$A = in_%02x", $M[$pc++]/xge; |
761 | s/\bIN\b/ sprintf "\$A = in_%02x", $M[$pc++]/xge; # in insns call in_HEX |
674 | s/\bOUT\b/sprintf "out_%02x \$A ", $M[$pc++]/xge; |
762 | s/\bOUT\b/sprintf "out_%02x \$A ", $M[$pc++]/xge; # out likewise |
675 | } |
763 | } |
676 | |
764 | |
677 | $insn .= "$op;\n"; |
765 | $insn .= "$op;\n"; |
678 | } |
766 | } |
679 | |
767 | |
680 | |
768 | |
681 | $insn .= "$pc"; |
769 | $insn .= $pc; |
682 | $insn =~ s/\x00.*$//s; |
770 | $insn =~ s/\x00.*$//s; |
683 | |
771 | |
684 | eval "use integer; sub { $insn }" or die "$insn: $@" |
772 | eval "sub { $insn }" or die "$insn: $@" |
685 | })->(); |
773 | })->(); |
686 | |
774 | |
687 | ++$CLK; |
775 | ++$CLK; |
688 | |
776 | |
689 | # things we do from time too time only |
777 | # things we do from time to time only |
690 | unless ($CLK & 0xf) { |
778 | unless ($CLK & 0xf) { |
691 | # do I/O |
779 | # do I/O |
692 | |
780 | |
693 | unless ($CLK & 0x7ff) { |
781 | unless ($CLK & 0xfff) { |
|
|
782 | if (select $x = $RIN, undef, undef, $POWERSAVE < 10 ? 0 : $CURSOR_IS_ON && 3600) { |
694 | |
783 | |
695 | # pty/serial I/O |
784 | # pty/serial I/O |
696 | unless (@PUSARTRECV || @KQUEUE || !$PTY) { |
785 | if ($PTY && (vec $x, fileno $PTY, 1) && (@PUSARTRECV < 128) && !@KQUEUE) { |
697 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
|
|
698 | |
|
|
699 | if (select $rin, undef, undef, 0) { |
|
|
700 | sysread $PTY, my $buf, 256; |
786 | sysread $PTY, my $buf, 256; |
|
|
787 | |
|
|
788 | # linux don't do cs7 and/or parity anymore, so we need to filter # out xoff characters to avoid freezes. |
701 | push @PUSARTRECV, unpack "C*", $buf; |
789 | push @PUSARTRECV, grep { ($_ & 0x7f) != 0x13 } unpack "C*", $buf; |
702 | } |
790 | } |
703 | } |
|
|
704 | |
791 | |
705 | # keyboard input |
792 | # keyboard input |
706 | if ($KBD) { |
793 | if ($KBD && (vec $x, 0, 1)) { |
|
|
794 | # to avoid non-blocking mode on stdin (and stty min 0), we |
|
|
795 | # just read byte-by-byte after a select says there is data. |
707 | while (select my $rin = "\x01", undef, undef, 0) { |
796 | while (select my $rin = "\x01", undef, undef, 0) { |
708 | sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF |
797 | sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF |
709 | or last; |
798 | or last; |
|
|
799 | } |
|
|
800 | |
|
|
801 | stdin_parse if length $STDIN_BUF; |
710 | } |
802 | } |
711 | |
803 | |
712 | stdin_parse if length $STDIN_BUF; |
804 | $POWERSAVE = 0; # activity |
|
|
805 | } elsif (@PUSARTRECV || @KQUEUE) { |
|
|
806 | $POWERSAVE = 0; |
|
|
807 | } else { |
|
|
808 | ++$POWERSAVE; |
713 | } |
809 | } |
714 | } |
810 | } |
715 | |
811 | |
716 | # kick off various interrupts |
812 | # kick off serial input interrupt quite often |
717 | |
|
|
718 | $RST |= 2 if @PUSARTRECV && $XON; # VT100, but works on vt102, too (probably not used on real hardware though) |
813 | $RST |= 2 if @PUSARTRECV && $XON; # VT100, but works on vt102, too (probably not used on real hardware though) |
719 | #$INTPEND |= 2 if @PUSARTRECV && $XON; # VT102, 6.5 rxrdy |
814 | #$INTPEND |= 2 if @PUSARTRECV && $XON; # VT102, 6.5 rxrdy |
720 | |
815 | |
721 | # kick off vertical retrace form time to time |
816 | # kick off vertical retrace interrupt from time to time |
722 | unless ($CLK & 0x1ff) { |
817 | unless ($CLK & 0x1ff) { |
723 | $RST |= 4; # vertical retrace |
818 | $RST |= 4; # vertical retrace |
724 | } |
819 | } |
725 | |
820 | |
726 | # handle video hardware |
821 | # handle video hardware |
727 | |
|
|
728 | unless ($CLK & 0x1fff) { |
822 | unless ($CLK & 0x3fff) { |
729 | prscr; |
823 | display; |
730 | } |
824 | } |
731 | } |
825 | } |
732 | |
826 | |
733 | # the interrupt logic |
827 | # the interrupt logic - we only interrupt after basic blocks |
734 | $x = $INTPEND & ~$INTMASK; |
828 | # which, as a side effect, ensures that we don't interrupt |
735 | if (($RST || $x) && $IFF) { |
829 | # "ei; ret" sequences and thus reduce the risk of stack overflows. |
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|
830 | if (($RST || ($INTPEND & ~$INTMASK)) && $IFF) { |
736 | # rst 1 kbd data available |
831 | # rst 1 kbd data available |
737 | # rst 2 pusart xmit+recv flag |
832 | # rst 2 pusart xmit+recv flag |
738 | # rst 4 vertical retrace |
833 | # rst 4 vertical retrace |
739 | # 5.5 vt125 mb7 trans ready (serial send?) |
834 | # 5.5 vt125 mb7 trans ready (serial send?) |
740 | # 6.5 vt125 mb7 read ready (something modem?) |
835 | # 6.5 vt125 mb7 read ready (something modem?) |
741 | # 7.5 vt125 mb7 vblank h(?) |
836 | # 7.5 vt125 mb7 vblank h(?) |
742 | # trap vt125 mbi init h(?) |
837 | # trap vt125 mbi init h(?) |
743 | my $vec; |
838 | my $vec; |
744 | |
839 | |
|
|
840 | my $pend = $INTPEND & ~$INTMASK; |
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|
841 | |
745 | if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
842 | if ($pend & 1) { $vec = 0x2c; $INTPEND &= ~1; |
746 | } elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
843 | } elsif ($pend & 2) { $vec = 0x34; $INTPEND &= ~2; |
747 | } elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
844 | } elsif ($pend & 4) { $vec = 0x3c; $INTPEND &= ~4; |
748 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # for some reason, this breaks vt102 |
845 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # the vt102 firmware doesn't like combined interrupts |
749 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
846 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
750 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
847 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
751 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
848 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
752 | } else { |
849 | } else { |
753 | die; |
850 | die; |
754 | } |
851 | } |
755 | |
852 | |
|
|
853 | # jump to the interrupt vector |
756 | $M[--$SP] = $PC >> 8; |
854 | $M[--$SP] = $PC >> 8; |
757 | $M[--$SP] = $PC & 0xff; |
855 | $M[--$SP] = $PC & 0xff; |
758 | $PC = $vec; |
856 | $PC = $vec; |
759 | |
857 | |
760 | $IFF = 0; |
858 | $IFF = 0; |
761 | } |
859 | } |
762 | } |
860 | } |
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|
861 | |
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|
862 | ############################################################################# |
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|
863 | # roms in the data section + one newline |
|
|
864 | # |
|
|
865 | # vt100 @ 0x0000+0x0800 23-032E2 |
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866 | # vt100 @ 0x0800+0x0800 23-061E2 |
|
|
867 | # vt100 @ 0x1000+0x0800 23-033E2 |
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|
868 | # vt100 @ 0x1800+0x0800 23-034E2 |
|
|
869 | # |
|
|
870 | # vt102 @ 0x0000+0x2000 23-226E4 |
|
|
871 | # vt102 @ 0x8000+0x2000 23-225E4 |
|
|
872 | # |
|
|
873 | # vt131 @ 0xa000+0x0800 23-280E2 |
|
|
874 | # |
763 | |
875 | |
764 | __DATA__ |
876 | __DATA__ |
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… | |
… | |
871 | |