| … | |
… | |
| 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 strict; |
| 21 | # ./vt102 bash |
|
|
| 22 | # ./vt102 telnet towel.blinkenlights.nl |
|
|
| 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; |
21 | #use common::sense; |
| 29 | |
|
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| 30 | $| = 1; |
|
|
| 31 | |
22 | |
| 32 | my $VT102 = 1; |
23 | my $VT102 = 1; |
| 33 | my $AVO = $VT102 || 1; |
24 | my $VT131 = 0; |
|
|
25 | my $AVO = 1; |
|
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26 | |
|
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27 | shift, ($VT102 = 0), ($AVO = 0) if $ARGV[0] =~ /^-?-vt100$/; |
|
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28 | shift, ($VT102 = 0) if $ARGV[0] =~ /^-?-vt100\+avo$/; |
|
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29 | shift if $ARGV[0] =~ /^-?-vt102$/; |
|
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30 | shift, ($VT131 = 1) if $ARGV[0] =~ /^-?-vt131$/; |
|
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31 | |
|
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32 | if ($ARGV[0] =~ /^-/) { |
|
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33 | die <<EOF; |
|
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34 | |
|
|
35 | VT102, A VT100/101/102/131 SIMULATOR |
|
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36 | |
|
|
37 | Usage: |
|
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38 | |
|
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39 | $0 [option] [program [args]] |
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40 | |
|
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41 | Examples: |
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42 | |
|
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43 | $0 bash |
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44 | $0 telnet towel.blinkenlights.nl |
|
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45 | $0 curl http://artscene.textfiles.com/vt100/trekvid.vt |
|
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46 | $0 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
|
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47 | |
|
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48 | Option can be one of: |
|
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49 | |
|
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50 | --vt100 |
|
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51 | --vt100+avo |
|
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52 | --vt102 |
|
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53 | --vt131 |
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54 | |
|
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55 | Non-obvious special keys are: |
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56 | |
|
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57 | SET UP Home |
|
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58 | BACKSPACE Rubout |
|
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59 | CAPS LOCK Prior/PgUp |
|
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60 | NO SCROLL Next/PgDown |
|
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61 | BREAK End |
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62 | |
|
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63 | Set-Up Guide: |
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64 | |
|
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65 | http://vt100.net/docs/vt102-ug/chapter3.html#S3.6 |
|
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66 | |
|
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67 | Author: |
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68 | |
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69 | Marc Lehmann <vt102\@schmorp.de> |
|
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70 | |
|
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71 | EOF |
|
|
72 | } |
|
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73 | |
|
|
74 | ############################################################################# |
|
|
75 | # ROM/hardware init |
|
|
76 | |
|
|
77 | my $PTY; # the pty we allocated, if any |
| 34 | my $KBD = 1; |
78 | my $KBD = 1; |
| 35 | |
79 | |
| 36 | ############################################################################# |
|
|
| 37 | # rom initialising |
|
|
| 38 | |
|
|
| 39 | my $ROM = do { |
80 | my $ROMS = do { |
| 40 | binmode DATA; |
81 | binmode DATA; |
| 41 | local $/; |
82 | local $/; |
| 42 | <DATA> |
83 | <DATA> |
| 43 | }; |
84 | }; |
| 44 | |
85 | |
| 45 | 0x6001 == length $ROM or die "corrupted rom image"; |
86 | 0x6801 == length $ROMS or die "corrupted rom image"; |
| 46 | |
|
|
| 47 | binmode STDOUT; |
|
|
| 48 | |
87 | |
| 49 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
88 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
| 50 | |
89 | |
| 51 | # populate mem with rom contents |
90 | # populate mem with rom contents |
| 52 | if ($VT102) { |
91 | if ($VT102) { |
| 53 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x2000, 0x2000; |
92 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x2000, 0x2000; |
| 54 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROM, 0x4000, 0x2000; |
93 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROMS, 0x4000, 0x2000; |
|
|
94 | @M[0xa000 .. 0xa7ff] = unpack "C*", substr $ROMS, 0x6000, 0x0800 if $VT131; |
| 55 | } else { |
95 | } else { |
| 56 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000; |
96 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x0000, 0x2000; |
| 57 | } |
97 | } |
| 58 | |
98 | |
| 59 | ############################################################################# |
99 | ############################################################################# |
| 60 | # cpu registers and I/O support |
100 | # 8085 CPU registers and I/O support |
| 61 | |
|
|
| 62 | my $PTY; # the pty we allocated, if any |
|
|
| 63 | my $PRSTATUS = 0; |
|
|
| 64 | |
101 | |
| 65 | # 8080/8085 registers |
102 | # 8080/8085 registers |
| 66 | # b, c, d, e, h, l, a |
|
|
| 67 | my ($A, $B, $C, $D, $E, $H, $L, $A); |
103 | my ($A, $B, $C, $D, $E, $H, $L); |
| 68 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
104 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
| 69 | |
105 | |
| 70 | my $RST = 0; # 8080 pending interrupts |
106 | my $RST = 0; # 8080 pending interrupts |
| 71 | my $INTMASK = 7; # 8085 half interrupts |
107 | my $INTMASK = 7; # 8085 half interrupts |
| 72 | my $INTPEND = 0; # 8085 half interrupts |
108 | my $INTPEND = 0; # 8085 half interrupts |
| 73 | |
109 | |
| 74 | my $x; # dummy temp for instructions |
|
|
| 75 | |
|
|
| 76 | my $CLK; # rather inexact clock |
110 | my $CLK; # rather inexact clock |
| 77 | |
111 | |
| 78 | ############################################################################# |
112 | ############################################################################# |
| 79 | # the dreaded nvr1400 chip. not needed to get it going, but provided for reference |
113 | # the dreaded NVR1400 chip. not needed to get it going, but provided anyway |
| 80 | |
114 | |
| 81 | # nvram |
115 | # nvram |
| 82 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
116 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
| 83 | my $NVRADDR; |
117 | my $NVRADDR; |
| 84 | my $NVRDATA; |
118 | my $NVRDATA; |
| … | |
… | |
| 93 | sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase |
127 | sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase |
| 94 | sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read |
128 | sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read |
| 95 | sub { }, # 7 standby |
129 | sub { }, # 7 standby |
| 96 | ); |
130 | ); |
| 97 | |
131 | |
| 98 | my @bitidx; |
132 | my @NVR_BITIDX; |
| 99 | $bitidx[1 << $_] = 9 - $_ for 0..9; |
133 | $NVR_BITIDX[1 << $_] = 9 - $_ for 0..9; |
| 100 | |
134 | |
| 101 | # the nvr1400 state machine. what a monster |
135 | # the nvr1400 state machine. what a monster |
| 102 | sub nvr() { |
136 | sub nvr() { |
| 103 | my $a1 = $bitidx[(~$NVRADDR ) & 0x3ff]; |
137 | my $a1 = $NVR_BITIDX[(~$NVRADDR ) & 0x3ff]; |
| 104 | my $a0 = $bitidx[(~$NVRADDR >> 10) & 0x3ff]; |
138 | my $a0 = $NVR_BITIDX[(~$NVRADDR >> 10) & 0x3ff]; |
| 105 | |
139 | |
| 106 | # printf "NVR %02x A %020b %d %d D %02x\n", $NVRLATCH, $NVRADDR & 0xfffff, $a1, $a0, $NVRDATA; |
140 | # printf "NVR %02x A %020b %d %d D %02x\n", $NVRLATCH, $NVRADDR & 0xfffff, $a1, $a0, $NVRDATA; |
| 107 | |
141 | |
| 108 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
142 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
| 109 | } |
143 | } |
| 110 | |
144 | |
| 111 | ############################################################################# |
145 | ############################################################################# |
|
|
146 | # I/O ports - output |
| 112 | |
147 | |
| 113 | my $DC11 = 0; # 4 bit commands |
148 | my $DC11_REVERSE = 0; |
| 114 | my $DC12 = 0; |
|
|
| 115 | |
149 | |
| 116 | my $XON = 1; # false if terminal wants us to pause |
150 | my $XON = 1; # false if terminal wants us to pause |
| 117 | my $PUSARTCMD; |
151 | my $PUSARTCMD; |
| 118 | |
152 | |
| 119 | my @KXMIT; # current scan queue |
153 | my @KXMIT; # current scan queue |
| … | |
… | |
| 155 | |
189 | |
| 156 | sub out_62 { |
190 | sub out_62 { |
| 157 | $NVRLATCH = shift; |
191 | $NVRLATCH = shift; |
| 158 | } |
192 | } |
| 159 | |
193 | |
| 160 | sub out_a2 { $DC11 = shift } |
194 | sub out_a2 { |
|
|
195 | my $dc11 = 0x0f & shift; |
|
|
196 | |
|
|
197 | $DC11_REVERSE = 1 if $dc11 == 0b1010; |
|
|
198 | $DC11_REVERSE = 0 if $dc11 == 0b1011; |
|
|
199 | } |
|
|
200 | |
| 161 | sub out_c2 { } # unknown |
201 | sub out_c2 { } # unknown |
| 162 | sub out_d2 { $DC12 = shift } |
202 | sub out_d2 { } # 0..3 == 80c/132c/60hz/50hz |
| 163 | |
203 | |
| 164 | sub out_82 { |
204 | sub out_82 { |
| 165 | # keyboard |
205 | # keyboard |
| 166 | |
206 | |
| 167 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INSERT L1(?) |
207 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INS L1 |
| 168 | # CLICK STARTSCAN ONLINE LOCKED | LED1 LED2 LED3 LED4 |
208 | # CLICK STARTSCAN ONLINE LOCKED | L1 L2 L3 L4 |
| 169 | $KSTATUS = $_[0]; |
209 | $KSTATUS = $_[0]; |
| 170 | |
210 | |
| 171 | # start new scan unless scan in progress |
211 | # start new scan unless scan in progress |
| 172 | if (($_[0] & 0x40) && !@KXMIT) { |
212 | if (($_[0] & 0x40) && !@KXMIT) { |
| 173 | # do not reply with keys in locked mode |
213 | # do not reply with keys in locked mode |
| … | |
… | |
| 196 | $RST |= 1; |
236 | $RST |= 1; |
| 197 | } |
237 | } |
| 198 | } |
238 | } |
| 199 | |
239 | |
| 200 | ############################################################################# |
240 | ############################################################################# |
|
|
241 | # I/O ports - input |
| 201 | |
242 | |
| 202 | my $NVRBIT; |
243 | my $NVRBIT; |
| 203 | my $LBA; |
244 | my $LBA6; # twice the frequenxy of LBA7 |
| 204 | |
245 | |
| 205 | sub in_00 { # pusart data |
246 | sub in_00 { # pusart data |
| 206 | # interrupt not generated here, because infinite |
247 | # interrupt not generated here, because infinite |
| 207 | # speed does not go well with the vt102. |
248 | # speed does not go well with the vt102. |
| 208 | |
249 | |
| … | |
… | |
| 217 | sub in_22 { # modem buffer(?) |
258 | sub in_22 { # modem buffer(?) |
| 218 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
259 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
| 219 | 0x20 |
260 | 0x20 |
| 220 | } |
261 | } |
| 221 | |
262 | |
| 222 | sub in_0f { } # unknown, connected to out 2f |
263 | sub in_0f { 0xff } # vt102 unknown, connected to out 2f |
| 223 | |
264 | |
| 224 | sub in_42 { # flag buffer |
265 | sub in_42 { # flag buffer |
| 225 | ++$LBA; |
266 | ++$LBA6; |
| 226 | |
267 | |
| 227 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2; |
268 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA6 & 0x3) == 0x2; |
| 228 | |
269 | |
| 229 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
270 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
| 230 | |
271 | |
| 231 | my $f = 0x85 | $NVRBIT; |
272 | my $f = 0x85 | $NVRBIT; |
| 232 | |
273 | |
| 233 | $f |= 0x02 unless $AVO; |
274 | $f |= 0x02 unless $AVO; |
| 234 | $f |= 0x40 if $LBA & 0x2; |
275 | $f |= 0x40 if $LBA6 & 0x2; |
| 235 | |
276 | |
| 236 | $f |
277 | $f |
| 237 | } |
278 | } |
| 238 | |
279 | |
| 239 | sub in_82 { # tbmt keyboard uart |
280 | sub in_82 { # tbmt keyboard uart |
| … | |
… | |
| 241 | |
282 | |
| 242 | $RST |= 1; |
283 | $RST |= 1; |
| 243 | shift @KXMIT |
284 | shift @KXMIT |
| 244 | } |
285 | } |
| 245 | |
286 | |
| 246 | sub in_03 { 0xff } # unknown, printer uart input? |
287 | sub in_03 { 0xff } # vt102 unknown, printer uart input? |
| 247 | sub in_0b { 0xff } # unknown |
288 | sub in_0b { 0xff } # vt102 unknown |
| 248 | sub in_17 { 0xff } # unknown, printer status clear by reading? |
289 | sub in_17 { 0xff } # vt102 unknown, printer status clear by reading? |
| 249 | sub in_1b { 0xff } # unknown |
290 | sub in_1b { 0xff } # vt102 unknown |
| 250 | |
291 | |
| 251 | ############################################################################# |
292 | ############################################################################# |
|
|
293 | # 8085 cpu opcodes and flag handling |
|
|
294 | |
|
|
295 | my $x; # dummy scratchpad for opcodes |
| 252 | |
296 | |
| 253 | sub sf { # set flags (ZSC - AP not implemented) |
297 | sub sf { # set flags (ZSC - AP not implemented) |
| 254 | $FS = $_[0] & 0x080; |
298 | $FS = $_[0] & 0x080; |
| 255 | $FZ = ($_[0] & 0x0ff) == 0; |
299 | $FZ = !($_[0] & 0x0ff); |
| 256 | $FC = $_[0] & 0x100; |
300 | $FC = $_[0] & 0x100; |
| 257 | |
301 | |
| 258 | $_[0] & 0xff |
302 | $_[0] &= 0xff; |
|
|
303 | } |
|
|
304 | |
|
|
305 | sub sf8 { # set flags (ZSC - AP not implemented) |
|
|
306 | $FS = $_[0] & 0x080; |
|
|
307 | $FZ = !($_[0] & 0x0ff); |
|
|
308 | $FC = 0; |
| 259 | } |
309 | } |
| 260 | |
310 | |
| 261 | sub sf_nc { # set flags except carry |
311 | sub sf_nc { # set flags except carry |
| 262 | $FS = $_[0] & 0x080; |
312 | $FS = $_[0] & 0x080; |
| 263 | $FZ = ($_[0] & 0x0ff) == 0; |
313 | $FZ = ($_[0] & 0x0ff) == 0; |
| 264 | |
314 | |
| 265 | $_[0] & 0xff |
315 | $_[0] &= 0xff; |
| 266 | } |
316 | } |
| 267 | |
317 | |
| 268 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0 .. 255; |
318 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0x00 .. 0xff; |
| 269 | my @ops; |
|
|
| 270 | |
319 | |
| 271 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
320 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
| 272 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
321 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
|
|
322 | |
|
|
323 | $op[0x00] = ''; |
| 273 | |
324 | |
| 274 | # mov r,r / r,M / M,r |
325 | # mov r,r / r,M / M,r |
| 275 | for my $s (0..7) { |
326 | for my $s (0..7) { |
| 276 | for my $d (0..7) { |
327 | for my $d (0..7) { |
| 277 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; |
328 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; # mov |
| 278 | } |
329 | } |
| 279 | } |
330 | } |
| 280 | |
331 | |
| 281 | $op[0x00] = ''; |
332 | $op[0x76] = 'die "HLT"'; # hlt (mov m,m) |
|
|
333 | |
|
|
334 | # mvi r / M |
|
|
335 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
| 282 | |
336 | |
| 283 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
337 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
| 284 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
338 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
| 285 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
339 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
| 286 | $op[0x31] = '$SP = IMM16' ; # lxi #d# 0xf000 because of limited stack |
340 | $op[0x31] = '$SP = IMM16' ; # lxi |
| 287 | |
341 | |
| 288 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
342 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
| 289 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
343 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
| 290 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
344 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
| 291 | |
345 | |
|
|
346 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
|
|
347 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
|
|
348 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
|
|
349 | |
|
|
350 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
|
|
351 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
|
|
352 | |
| 292 | sub inxdcx($$$) { |
353 | sub inxdcx($$$) { |
| 293 | $x = ($_[0] * 256 + $_[1] + $_[2]) & 0xffff; |
354 | $x = $_[0] * 256 + $_[1] + $_[2]; |
| 294 | $_[0] = $x >> 8; |
355 | ($_[0], $_[1]) = (($x >> 8) & 0xff, $x & 0xff); |
| 295 | $_[1] = $x & 0xff; |
|
|
| 296 | } |
356 | } |
| 297 | |
357 | |
| 298 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
358 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
| 299 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
359 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
| 300 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
360 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
| … | |
… | |
| 303 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
363 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
| 304 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
364 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
| 305 | $op[0x3b] = '--$SP' ; # dcx |
365 | $op[0x3b] = '--$SP' ; # dcx |
| 306 | |
366 | |
| 307 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
367 | # "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; |
368 | $op[0x04 + $_ * 8] = "sf_nc ++$reg[$_]" for 0..7; # inr |
|
|
369 | $op[0x05 + $_ * 8] = "sf_nc --$reg[$_]" for 0..7; # dcr |
|
|
370 | |
|
|
371 | $op[0x07] = ' $FC = $A & 0x80; $A = (($A << 1) + ($FC && 0x01)) & 0xff '; # rlc |
|
|
372 | $op[0x17] = ' ($FC, $A) = ($A & 0x80, (($A << 1) + ($FC && 0x01)) & 0xff)'; # ral |
|
|
373 | |
|
|
374 | $op[0x0f] = ' $FC = $A & 0x01; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
|
|
375 | $op[0x1f] = ' ($FC, $A) = ($A & 0x01, ($A >> 1) | ($FC && 0x80))'; # rar |
|
|
376 | |
|
|
377 | $op[0x2f] = '$A ^= 0xff'; # cma |
| 313 | |
378 | |
| 314 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
379 | # 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 |
380 | # wasted three of my best days with mindless vt102 rom reverse engineering |
| 316 | sub dad { |
381 | sub dad { |
| 317 | $x = $H * 256 + $L + $_[0]; |
382 | $x = $H * 256 + $L + $_[0]; |
| … | |
… | |
| 323 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
388 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
| 324 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
389 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
| 325 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
390 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
| 326 | $op[0x39] = 'dad $SP '; # dad |
391 | $op[0x39] = 'dad $SP '; # dad |
| 327 | |
392 | |
| 328 | $op[0x07] = ' $FC = $A >> 7; $A = ($A * 2 + $FC) & 0xff '; # rlc |
393 | $op[0x80 + $_] = 'sf $A += + ' . $reg[$_] for 0..7; # add |
| 329 | $op[0x17] = ' ($FC, $A) = ($A >> 7, ($A * 2 + $FC) & 0xff)'; # ral |
394 | $op[0x88 + $_] = 'sf $A += ($FC && 1) + ' . $reg[$_] for 0..7; # adc |
|
|
395 | $op[0x90 + $_] = 'sf $A -= + ' . $reg[$_] for 0..7; # sub |
|
|
396 | $op[0x98 + $_] = 'sf $A -= ($FC && 1) + ' . $reg[$_] for 0..7; # sbb |
|
|
397 | $op[0xa0 + $_] = 'sf8 $A &= ' . $reg[$_] for 0..7; # ana |
|
|
398 | $op[0xa8 + $_] = 'sf8 $A ^= ' . $reg[$_] for 0..7; # xra |
|
|
399 | $op[0xb0 + $_] = 'sf8 $A |= ' . $reg[$_] for 0..7; # ora |
|
|
400 | $op[0xb8 + $_] = 'sf $x = $A - ' . $reg[$_] for 0..7; # cmp |
|
|
401 | # possible todo: optimize ora a, maybe xra a |
| 330 | |
402 | |
| 331 | $op[0x0f] = ' $FC = $A & 1; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
403 | $op[0xc6] = 'sf $A += IMM8'; # adi |
| 332 | $op[0x1f] = ' ($FC, $A) = ($A & 1, ($A >> 1) | ($FC && 0x80))'; # rar |
404 | # ce ADI NYI |
|
|
405 | $op[0xd6] = 'sf $A -= IMM8'; # sui |
|
|
406 | # de SBI NYI |
|
|
407 | $op[0xe6] = 'sf8 $A &= IMM8'; # ani |
|
|
408 | $op[0xee] = 'sf8 $A ^= IMM8'; # xri |
|
|
409 | $op[0xf6] = 'sf8 $A |= IMM8'; # ori |
|
|
410 | $op[0xfe] = 'sf $A - IMM8'; # cpi |
| 333 | |
411 | |
| 334 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
412 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
| 335 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
413 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
| 336 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
414 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
415 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
416 | |
|
|
417 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
418 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
419 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
420 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = ($x & 0x80, $x & 0x40, $x & 0x10, $x & 0x04, $x & 0x01)'; # pop psw |
|
|
421 | |
|
|
422 | $op[0xc2 + $_ * 8] = 'BRA IMM16 ' . $cc[$_] for 0..7; # jcc |
|
|
423 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
424 | |
|
|
425 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) ' . $cc[$_] for 0..7; # ccc |
|
|
426 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
427 | |
|
|
428 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 ' . $cc[$_] for 0..7; # rcc |
|
|
429 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
430 | |
|
|
431 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
432 | |
|
|
433 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
434 | # f9 SPHL NYI |
|
|
435 | |
|
|
436 | $op[0x37] = '$FC = 1 '; # stc |
|
|
437 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
438 | |
|
|
439 | $op[0xd3] = 'OUT'; # out |
|
|
440 | $op[0xdb] = 'IN'; # in |
|
|
441 | |
|
|
442 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
443 | |
|
|
444 | # e3 xthl NYI # @ 917b, hl <-> (sp) |
| 337 | |
445 | |
| 338 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
446 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
| 339 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
447 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
| 340 | |
448 | |
| 341 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
449 | $op[0xf3] = '$IFF = 0'; # DI |
| 342 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
450 | $op[0xfb] = '$IFF = 1'; # EI |
| 343 | |
451 | |
| 344 | # yeah, the fucking setup screens actually use daa... |
452 | # yeah, the fucking setup screens actually use daa... |
| 345 | $op[0x27] = ' |
453 | $op[0x27] = ' |
| 346 | my ($h, $l); |
454 | my ($h, $l); |
| 347 | |
455 | |
| 348 | ($h, $l) = ($A >> 4, $A & 15); |
456 | ($h, $l) = ($A >> 4, $A & 15); |
| 349 | |
457 | |
| 350 | if ($l > 9 || $FA) { |
458 | if ($l > 9 || $FA) { |
| 351 | $A = sf $A + 6; |
459 | sf $A += 6; |
| 352 | ($h, $l) = ($A >> 4, $A & 15); |
460 | ($h, $l) = ($A >> 4, $A & 15); |
| 353 | } |
461 | } |
| 354 | |
462 | |
| 355 | if ($h > 9 || $FC) { |
463 | if ($h > 9 || $FC) { |
| 356 | $h += 6; |
464 | $h += 6; |
| 357 | $A = ($h * 16 + $l) & 0xff; |
465 | $A = ($h * 16 + $l) & 0xff; |
| 358 | } |
466 | } |
| 359 | '; # daa, almost certainly borked, also, acarry not set by sf |
467 | '; # daa, almost certainly borked, also, acarry not set by sf |
| 360 | |
468 | |
| 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 | ############################################################################# |
469 | ############################################################################# |
|
|
470 | # print cpu status for debugging purposes |
| 421 | |
471 | |
| 422 | # print cpu status, for debugging |
472 | # print cpu status, for debugging |
| 423 | sub status { |
473 | sub status { |
| 424 | my $PC = shift || $PC; |
474 | my $PC = shift || $PC; |
| 425 | |
475 | |
| … | |
… | |
| 429 | ($FZ ? "1" : "0") |
479 | ($FZ ? "1" : "0") |
| 430 | . ($FS ? "1" : "0") |
480 | . ($FS ? "1" : "0") |
| 431 | . ($FC ? "1" : "0") |
481 | . ($FC ? "1" : "0") |
| 432 | . ($FA ? "1" : "0") |
482 | . ($FA ? "1" : "0") |
| 433 | . ($FP ? "1" : "0"), |
483 | . ($FP ? "1" : "0"), |
| 434 | $M[$PC], $ops[$M[$PC]]; |
484 | $M[$PC], $op[$M[$PC]]; |
| 435 | } |
485 | } |
| 436 | |
486 | |
| 437 | ############################################################################# |
487 | ############################################################################# |
|
|
488 | # video emulation |
| 438 | |
489 | |
| 439 | my @chr = ( |
490 | binmode STDOUT; |
|
|
491 | |
|
|
492 | my @CHARMAP = ( |
| 440 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
493 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
| 441 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
494 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
| 442 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
495 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
| 443 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
496 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
| 444 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
497 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
| … | |
… | |
| 446 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
499 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
| 447 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
500 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
| 448 | (map chr, 0x020 .. 0x7e), |
501 | (map chr, 0x020 .. 0x7e), |
| 449 | ); |
502 | ); |
| 450 | |
503 | |
| 451 | utf8::encode $_ for @chr; |
504 | utf8::encode $_ for @CHARMAP; |
| 452 | |
505 | |
| 453 | sub prscr { |
506 | my @SGR; # sgr sequences for attributes |
|
|
507 | |
|
|
508 | for (0x00 .. 0xff) { |
|
|
509 | my $sgr = ""; |
|
|
510 | |
|
|
511 | # ~1 sgr 5 blink |
|
|
512 | # ~2 sgr 4 underline |
|
|
513 | # ~4 sgr 1 bold |
|
|
514 | # 0x80 in attr, sgr 7, reversed |
|
|
515 | |
|
|
516 | $sgr .= ";5" unless $_ & 0x01; |
|
|
517 | $sgr .= ";4" unless $_ & 0x02; |
|
|
518 | $sgr .= ";1" unless $_ & 0x04; |
|
|
519 | $sgr .= ";7" if $_ & 0x80; |
|
|
520 | |
|
|
521 | $SGR[$_] = "\e[${sgr}m"; |
|
|
522 | } |
|
|
523 | |
|
|
524 | my @LED = $VT102 |
|
|
525 | ? qw(L1 INSERT DSR CTS LOCKED LOCAL SCAN BEEP) |
|
|
526 | : qw(L4 L3 L2 L1 LOCKED LOCAL SCAN BEEP); |
|
|
527 | |
|
|
528 | # display screen |
|
|
529 | sub display { |
| 454 | my $i = 0x2000; |
530 | my $i = 0x2000; |
| 455 | |
531 | |
| 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; |
532 | my $leds = join " ", map $KSTATUS & 2**$_ ? "\e[7m$LED[$_]\e[m" : "$LED[$_]", reverse 0 .. $#LED; |
|
|
533 | |
|
|
534 | my $scr = sprintf "\e[H--- LED [ %s ] CLK %d\e[K\n", $leds, $CLK; |
|
|
535 | |
|
|
536 | $scr .= "\e[?5" . ($DC11_REVERSE ? "h" : "l"); |
| 457 | |
537 | |
| 458 | line: |
538 | line: |
| 459 | for my $y (0 .. 25) { |
539 | for my $y (0 .. 25) { # ntsc, two vblank delay lines, up to 24 text lines |
|
|
540 | my $prev_sgr; |
|
|
541 | |
| 460 | $scr .= sprintf "%2d |", ++$y; |
542 | $scr .= sprintf "%2d \xe2\x94\x82", $y; |
| 461 | |
543 | |
| 462 | for (0..140) { |
544 | for (0..139) { |
| 463 | my $c = $M[$i++]; |
545 | my $c = $M[$i]; |
| 464 | |
|
|
| 465 | # printf "%04x %02x\n", $i-1,$c; |
|
|
| 466 | |
546 | |
| 467 | if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
547 | if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
| 468 | $scr .= "|\x1b[K\n"; |
548 | $scr .= "\e[m\xe2\x94\x82\e[K\n"; |
| 469 | |
549 | |
| 470 | my $a1 = $M[$i++]; |
550 | my $a1 = $M[$i + 1]; |
| 471 | my $a0 = $M[$i++]; |
551 | my $a0 = $M[$i + 2]; |
| 472 | |
552 | |
| 473 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
553 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
| 474 | |
554 | |
| 475 | next line; |
555 | next line; |
| 476 | } |
556 | } |
| 477 | |
557 | |
| 478 | $scr .= "\x1b[7m" if $c & 0x80; |
558 | my $sgr = $SGR[ ($M[$i++ + 0x1000] & 15) | ($c & 0x80)]; |
| 479 | $scr .= $chr[$c & 0x7f] // sprintf "[%02x]", $c & 0x7f; |
559 | |
| 480 | $scr .= "\x1b[m" if $c & 0x80; |
560 | $scr .= $prev_sgr = $sgr if $sgr ne $prev_sgr; |
|
|
561 | |
|
|
562 | $scr .= $CHARMAP[$c & 0x7f]; |
| 481 | } |
563 | } |
| 482 | |
564 | |
| 483 | $scr .= "\x1b[K\noverflow\x1b[K\n"; |
565 | $scr .= "\e[K\nvideo overflow\e[K\n"; |
| 484 | last; |
566 | last; |
| 485 | } |
567 | } |
| 486 | |
568 | |
| 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"; |
569 | $scr .= "\e[m\e[J"; |
| 499 | |
570 | |
| 500 | syswrite STDOUT, $scr; |
571 | syswrite STDOUT, $scr; |
| 501 | } |
572 | } |
| 502 | |
573 | |
| 503 | ############################################################################# |
574 | ############################################################################# |
|
|
575 | # keyboard handling |
| 504 | |
576 | |
| 505 | if (@ARGV) { |
577 | # 0x080 shift, 0x100 ctrl |
| 506 | require IO::Pty; |
578 | my %KEYMAP = ( |
| 507 | $PTY = IO::Pty->new; |
579 | "\t" => 0x3a, |
|
|
580 | "\r" => 0x64, |
|
|
581 | "\n" => 0x44, |
|
|
582 | |
|
|
583 | "\x00" => 0x77 | 0x100, # CTRL-SPACE |
|
|
584 | "\x1c" => 0x45 | 0x100, # CTRL-\ |
|
|
585 | "\x1d" => 0x14 | 0x100, # CTRL-] |
|
|
586 | "\x1e" => 0x24 | 0x100, # CTRL-~ |
|
|
587 | "\x1f" => 0x75 | 0x100, # CTRL-? |
|
|
588 | |
|
|
589 | # hardcoded rxvt keys |
|
|
590 | "\e" => 0x2a, # ESC |
|
|
591 | "\e[3~" => 0x03, # DC |
|
|
592 | "\e[5~" => 0x7e, # CAPS LOCK (prior) |
|
|
593 | "\e[6~" => 0x6a, # NO SCROLL (next) |
|
|
594 | "\e[A" => 0x30, # UP |
|
|
595 | "\e[B" => 0x22, # DOWN |
|
|
596 | "\e[C" => 0x10, # RIGHT |
|
|
597 | "\e[D" => 0x20, # LEFT |
|
|
598 | "\e[a" => 0x30 | 0x080, # UP |
|
|
599 | "\e[b" => 0x22 | 0x080, # DOWN |
|
|
600 | "\e[c" => 0x10 | 0x080, # RIGHT |
|
|
601 | "\e[d" => 0x20 | 0x080, # LEFT |
|
|
602 | "\e[7~" => 0x7b, # SETUP (home) |
|
|
603 | "\e[8~" => 0x23, # BREAK (end) |
|
|
604 | "\e[8\$" => 0x23 | 0x080, # SHIFT BREAK / DISCONNECT (shift-end) |
|
|
605 | "\x7f" => 0x33, # BACKSPACE |
|
|
606 | |
|
|
607 | "\e[11~" => 0x32, # F1 |
|
|
608 | "\e[11~" => 0x42, # F2 |
|
|
609 | "\e[11~" => 0x31, # F3 |
|
|
610 | "\e[11~" => 0x41, # F4 |
|
|
611 | ); |
| 508 | |
612 | |
| 509 | my $slave = $PTY->slave; |
613 | @KEYMAP{map chr, 0x20 .. 0x40, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
|
|
614 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9" # 20..40 |
|
|
615 | . "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; # 5b..7e |
| 510 | |
616 | |
| 511 | $PTY->set_winsize (24, 80); |
617 | $KEYMAP{"\x1f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
|
|
618 | $KEYMAP{"\x20" ^ $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
| 512 | |
619 | |
| 513 | unless (fork) { |
620 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
| 514 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
621 | $KEYMATCH = qr{^($KEYMATCH)}s; |
| 515 | |
622 | |
| 516 | close $PTY; |
623 | my %KMOD; |
| 517 | |
624 | |
| 518 | open STDIN , "<&", $slave; |
625 | sub key { |
| 519 | open STDOUT, ">&", $slave; |
626 | my ($key) = @_; |
| 520 | open STDERR, ">&", $slave; |
|
|
| 521 | |
627 | |
| 522 | system "stty ixoff erase ^H"; |
628 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $KMOD{0x7c}; # ctrl-up |
|
|
629 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $KMOD{0x7d}; # shift-up |
| 523 | |
630 | |
| 524 | $PTY->make_slave_controlling_terminal; |
631 | push @KQUEUE, 0x7c if $key & 0x100 && !$KMOD{0x7c}++; # ctrl-down |
| 525 | $PTY->close_slave; |
632 | push @KQUEUE, 0x7d if $key & 0x080 && !$KMOD{0x7d}++; # shift-down |
| 526 | |
633 | |
| 527 | exec @ARGV; |
634 | $key &= 0x7f; |
| 528 | } |
635 | push @KQUEUE, $key, -$key; |
| 529 | |
|
|
| 530 | $PTY->close_slave; |
|
|
| 531 | |
|
|
| 532 | } else { |
|
|
| 533 | open $PTY, "</dev/null" or die;#d |
|
|
| 534 | } |
636 | } |
| 535 | |
637 | |
| 536 | ############################################################################# |
638 | my $STDIN_BUF; |
| 537 | |
639 | |
|
|
640 | sub stdin_parse { |
|
|
641 | key $KEYMAP{$1} |
|
|
642 | while $STDIN_BUF =~ s/$KEYMATCH//; |
|
|
643 | |
|
|
644 | # skip input we can't decipher |
|
|
645 | substr $STDIN_BUF, 0, 1, ""; |
|
|
646 | } |
|
|
647 | |
|
|
648 | if ($KBD) { |
|
|
649 | system "stty -icanon -icrnl -inlcr -echo min 1 time 0"; |
|
|
650 | eval q{ sub END { system "stty sane" } }; |
|
|
651 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
|
|
652 | } |
|
|
653 | |
|
|
654 | ############################################################################# |
| 538 | # initial key input, to set up online mode etc. |
655 | # initial key input, to set up online mode etc. |
|
|
656 | # could be done via nvram defaults |
|
|
657 | |
| 539 | @KQUEUE = ( |
658 | @KQUEUE = ( |
| 540 | 0x7b, -0x7b, # setup |
659 | 0x7b, -0x7b, # setup |
| 541 | 0, # delay |
660 | 0, # delay |
| 542 | 0x28, -0x28, # 4, toggle local/online |
661 | 0x28, -0x28, # 4, toggle local/online |
| 543 | 0x38, -0x38, # 5, setup b |
662 | 0x38, -0x38, # 5, setup b |
| … | |
… | |
| 554 | 0x37, -0x37, # 6 toggle wrap around |
673 | 0x37, -0x37, # 6 toggle wrap around |
| 555 | 0x7b, -0x7b, # leave setup |
674 | 0x7b, -0x7b, # leave setup |
| 556 | ); |
675 | ); |
| 557 | |
676 | |
| 558 | ############################################################################# |
677 | ############################################################################# |
|
|
678 | # process/pty management |
| 559 | |
679 | |
| 560 | # 0x80 shift, 0x100 ctrl, 0x200 toggle |
680 | require IO::Pty; |
| 561 | my %KEYMAP = ( |
681 | $PTY = IO::Pty->new; |
| 562 | "\t" => 0x3a, |
|
|
| 563 | "\r" => 0x64, |
|
|
| 564 | "\n" => 0x44, |
|
|
| 565 | |
682 | |
| 566 | # hardcoded rxvt keys |
683 | 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 | |
684 | |
| 584 | "\e[11~" => 0x32, # F1 |
685 | $PTY->set_winsize (24, 80); |
| 585 | "\e[11~" => 0x42, # F2 |
|
|
| 586 | "\e[11~" => 0x31, # F3 |
|
|
| 587 | "\e[11~" => 0x41, # F4 |
|
|
| 588 | ); |
|
|
| 589 | |
686 | |
| 590 | @KEYMAP{map chr, 0x20..0x40} = unpack "C*", pack "H*", |
687 | unless (fork) { |
| 591 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9"; |
688 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
| 592 | |
689 | |
| 593 | @KEYMAP{map chr, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
690 | close $PTY; |
| 594 | "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; |
|
|
| 595 | |
691 | |
| 596 | $KEYMAP{"\x3f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
692 | open STDIN , "<&", $slave; |
| 597 | $KEYMAP{uc $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
693 | open STDOUT, ">&", $slave; |
|
|
694 | open STDERR, ">&", $slave; |
| 598 | |
695 | |
| 599 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
696 | system "stty ixoff erase ^H"; |
| 600 | $KEYMATCH = qr{^($KEYMATCH)}s; |
|
|
| 601 | |
697 | |
| 602 | sub key { |
698 | $PTY->make_slave_controlling_terminal; |
| 603 | my ($key) = @_; |
699 | $PTY->close_slave; |
| 604 | |
700 | |
| 605 | state %MOD; |
701 | @ARGV = "sh" unless @ARGV; |
| 606 | |
702 | exec @ARGV; |
| 607 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $MOD{0x7c}; # ctrl-up |
|
|
| 608 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $MOD{0x7d}; # shift-up |
|
|
| 609 | |
|
|
| 610 | push @KQUEUE, 0x7c if $key & 0x100 && !$MOD{0x7c}++; # ctrl-down |
|
|
| 611 | push @KQUEUE, 0x7d if $key & 0x080 && !$MOD{0x7d}++; # shift-down |
|
|
| 612 | |
|
|
| 613 | $key &= 0x7f; |
|
|
| 614 | push @KQUEUE, $key, -$key; |
|
|
| 615 | } |
703 | } |
| 616 | |
704 | |
| 617 | my $STDIN_BUF; |
705 | $PTY->close_slave; |
| 618 | |
706 | |
| 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 | ############################################################################# |
707 | ############################################################################# |
|
|
708 | # the actual hardware simulator |
| 634 | |
709 | |
| 635 | my @ICACHE; # compiled instruction cache |
710 | my @ICACHE; # compiled instruction cache |
| 636 | |
711 | |
| 637 | # the cpu |
|
|
| 638 | while () { |
712 | while () { |
| 639 | |
|
|
| 640 | # execute extended basic blocks |
713 | # execute extended basic blocks |
| 641 | $PC = ($ICACHE[$PC] ||= do { |
714 | $PC = ($ICACHE[$PC] ||= do { |
| 642 | my $pc = $PC; |
715 | my $pc = $PC; |
| 643 | |
716 | |
| 644 | my $insn = ""; |
717 | my $insn = ""; |
| 645 | |
718 | |
| 646 | # the jit compiler |
719 | # the jit compiler |
| 647 | for (0..15) { |
720 | 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; |
721 | my $imm; |
| 660 | my $op = $op[$M[$pc++]]; |
722 | my $op = $op[$M[$pc++]]; |
| 661 | |
723 | |
| 662 | for ($op) { |
724 | for ($op) { |
| 663 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
725 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
| … | |
… | |
| 676 | |
738 | |
| 677 | $insn .= "$op;\n"; |
739 | $insn .= "$op;\n"; |
| 678 | } |
740 | } |
| 679 | |
741 | |
| 680 | |
742 | |
| 681 | $insn .= "$pc"; |
743 | $insn .= $pc; |
| 682 | $insn =~ s/\x00.*$//s; |
744 | $insn =~ s/\x00.*$//s; |
| 683 | |
745 | |
| 684 | eval "use integer; sub { $insn }" or die "$insn: $@" |
746 | eval "use integer; sub { $insn }" or die "$insn: $@" |
| 685 | })->(); |
747 | })->(); |
| 686 | |
748 | |
| … | |
… | |
| 688 | |
750 | |
| 689 | # things we do from time too time only |
751 | # things we do from time too time only |
| 690 | unless ($CLK & 0xf) { |
752 | unless ($CLK & 0xf) { |
| 691 | # do I/O |
753 | # do I/O |
| 692 | |
754 | |
| 693 | unless ($CLK & 0x7ff) { |
755 | unless ($CLK & 0xfff) { |
| 694 | |
756 | |
| 695 | # pty/serial I/O |
757 | # pty/serial I/O |
| 696 | unless (@PUSARTRECV || @KQUEUE || !$PTY) { |
758 | unless ((@PUSARTRECV >= 128) || @KQUEUE || !$PTY) { |
| 697 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
759 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
| 698 | |
760 | |
| 699 | if (select $rin, undef, undef, 0) { |
761 | if (select $rin, undef, undef, 0) { |
| 700 | sysread $PTY, my $buf, 256; |
762 | sysread $PTY, my $buf, 256; |
| 701 | push @PUSARTRECV, unpack "C*", $buf; |
763 | push @PUSARTRECV, unpack "C*", $buf; |
| … | |
… | |
| 722 | unless ($CLK & 0x1ff) { |
784 | unless ($CLK & 0x1ff) { |
| 723 | $RST |= 4; # vertical retrace |
785 | $RST |= 4; # vertical retrace |
| 724 | } |
786 | } |
| 725 | |
787 | |
| 726 | # handle video hardware |
788 | # handle video hardware |
| 727 | |
|
|
| 728 | unless ($CLK & 0x1fff) { |
789 | unless ($CLK & 0x3fff) { |
| 729 | prscr; |
790 | display; |
| 730 | } |
791 | } |
| 731 | } |
792 | } |
| 732 | |
793 | |
| 733 | # the interrupt logic |
794 | # the interrupt logic |
| 734 | $x = $INTPEND & ~$INTMASK; |
795 | if (($RST || ($INTPEND & ~$INTMASK)) && $IFF) { |
| 735 | if (($RST || $x) && $IFF) { |
|
|
| 736 | # rst 1 kbd data available |
796 | # rst 1 kbd data available |
| 737 | # rst 2 pusart xmit+recv flag |
797 | # rst 2 pusart xmit+recv flag |
| 738 | # rst 4 vertical retrace |
798 | # rst 4 vertical retrace |
| 739 | # 5.5 vt125 mb7 trans ready (serial send?) |
799 | # 5.5 vt125 mb7 trans ready (serial send?) |
| 740 | # 6.5 vt125 mb7 read ready (something modem?) |
800 | # 6.5 vt125 mb7 read ready (something modem?) |
| 741 | # 7.5 vt125 mb7 vblank h(?) |
801 | # 7.5 vt125 mb7 vblank h(?) |
| 742 | # trap vt125 mbi init h(?) |
802 | # trap vt125 mbi init h(?) |
| 743 | my $vec; |
803 | my $vec; |
| 744 | |
804 | |
|
|
805 | my $pend = $INTPEND & ~$INTMASK; |
|
|
806 | |
| 745 | if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
807 | if ($pend & 1) { $vec = 0x2c; $INTPEND &= ~1; |
| 746 | } elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
808 | } elsif ($pend & 2) { $vec = 0x34; $INTPEND &= ~2; |
| 747 | } elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
809 | } elsif ($pend & 4) { $vec = 0x3c; $INTPEND &= ~4; |
| 748 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # for some reason, this breaks vt102 |
810 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # the vt102 firmware doesn't like combined interrupts |
| 749 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
811 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
| 750 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
812 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
| 751 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
813 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
| 752 | } else { |
814 | } else { |
| 753 | die; |
815 | die; |
| … | |
… | |
| 758 | $PC = $vec; |
820 | $PC = $vec; |
| 759 | |
821 | |
| 760 | $IFF = 0; |
822 | $IFF = 0; |
| 761 | } |
823 | } |
| 762 | } |
824 | } |
|
|
825 | |
|
|
826 | ############################################################################# |
|
|
827 | # roms in the data section + one newline |
|
|
828 | # |
|
|
829 | # vt100 @ 0x0000+0x0800 23-032E2 |
|
|
830 | # vt100 @ 0x0800+0x0800 23-061E2 |
|
|
831 | # vt100 @ 0x1000+0x0800 23-033E2 |
|
|
832 | # vt100 @ 0x1800+0x0800 23-034E2 |
|
|
833 | # |
|
|
834 | # vt102 @ 0x0000+0x2000 23-226E4 |
|
|
835 | # vt102 @ 0x8000+0x2000 23-225E4 |
|
|
836 | # |
|
|
837 | # vt131 @ 0xa000+0x0800 23-280E2 |
|
|
838 | # |
| 763 | |
839 | |
| 764 | __DATA__ |
840 | __DATA__ |
| 765 | 1N ; 0 >b/BWog<Gӂ,O $
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| 766 | 2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
842 | 2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
| 767 | ! ͋!2[ 2v!!"I!>2s >2 B>2y >2!2!&l" >@:X!:!͔>2!b:!K>G:| !p ^!p" :!x:! u> |
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| … | |
… | |
| 871 | |
947 | |
| 872 | .y ' & % & 5 > L GxWdkͨwͨ/w!e!6 #}vnͨwͨ ڐWzʁÚ#}v>
:,!ڢy2!:!OW!e! oһ$zW>0)1!2@3#4$5%6^7&8*9(-_=+`~[{]};:/?'",<.>\| poytwq ][iure1 `-9743=08652 Ѱ |
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| 873 | \lkgfa ';jhds
.,nbx* :B!4 |
949 | \lkgfa ';jhds
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