| … | |
… | |
| 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 |
|
|
| 21 | # ./vt102 bash |
|
|
| 22 | # ./vt102 telnet towel.blinkenlights.nl |
|
|
| 23 | # ./vt102 curl http://artscene.textfiles.com/vt100/trekvid.vt |
|
|
| 24 | # ./vt102 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
|
|
| 25 | |
|
|
| 26 | use strict; |
20 | use strict; |
| 27 | use feature qw(state); |
|
|
| 28 | #use common::sense; |
21 | #use common::sense; |
| 29 | |
22 | |
| 30 | $| = 1; |
|
|
| 31 | |
|
|
| 32 | my $VT102 = 1; |
23 | my $VT102 = 1; |
| 33 | my $AVO = $VT102 || 1; |
24 | my $VT131 = 0; |
|
|
25 | my $AVO = 1; |
| 34 | my $KBD = 1; |
26 | my $KBD = 1; |
| 35 | |
27 | |
| 36 | ############################################################################# |
28 | if ($ARGV[0] =~ /^-?-vt100$/) { |
| 37 | # rom initialising |
29 | shift; $VT102 = 0; $AVO = 0; |
|
|
30 | } |
| 38 | |
31 | |
|
|
32 | if ($ARGV[0] =~ /^-?-vt100\+avo$/) { |
|
|
33 | shift; $VT102 = 0; $AVO = 1; |
|
|
34 | } |
|
|
35 | |
|
|
36 | if ($ARGV[0] =~ /^-?-vt102$/) { |
|
|
37 | shift; # default |
|
|
38 | } |
|
|
39 | |
|
|
40 | if ($ARGV[0] =~ /^-?-vt131$/) { |
|
|
41 | shift; $VT131 = 1; |
|
|
42 | } |
|
|
43 | |
|
|
44 | if ($ARGV[0] =~ /^-/) { |
|
|
45 | die <<EOF; |
|
|
46 | |
|
|
47 | VT102, A VT100/101/102/131 SIMULATOR |
|
|
48 | |
|
|
49 | Usage: |
|
|
50 | |
|
|
51 | $0 [option] [program [args]] |
|
|
52 | |
|
|
53 | Examples: |
|
|
54 | |
|
|
55 | $0 bash |
|
|
56 | $0 telnet towel.blinkenlights.nl |
|
|
57 | $0 curl http://artscene.textfiles.com/vt100/trekvid.vt |
|
|
58 | $0 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
|
|
59 | |
|
|
60 | Option can be one of: |
|
|
61 | |
|
|
62 | --vt100 |
|
|
63 | --vt100+avo |
|
|
64 | --vt102 |
|
|
65 | --vt131 |
|
|
66 | |
|
|
67 | Non-obvious special keys are: |
|
|
68 | |
|
|
69 | SET UP Home |
|
|
70 | BACKSPACE Rubout |
|
|
71 | CAPS LOCK Prior/PgUp |
|
|
72 | NO SCROLL Next/PgDown |
|
|
73 | BREAK End |
|
|
74 | |
|
|
75 | Set-Up Guide: |
|
|
76 | |
|
|
77 | http://vt100.net/docs/vt102-ug/chapter3.html#S3.6 |
|
|
78 | |
|
|
79 | Author: |
|
|
80 | |
|
|
81 | Marc Lehmann <vt102\@schmorp.de> |
|
|
82 | |
|
|
83 | EOF |
|
|
84 | } |
|
|
85 | |
|
|
86 | ############################################################################# |
|
|
87 | # ROM/hardware init |
|
|
88 | |
| 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 $ROMS or die "corrupted rom image"; |
| 46 | |
96 | |
| 47 | binmode STDOUT; |
97 | binmode STDOUT; |
| 48 | |
98 | |
| 49 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
99 | my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
| 50 | |
100 | |
| 51 | # populate mem with rom contents |
101 | # populate mem with rom contents |
| 52 | if ($VT102) { |
102 | if ($VT102) { |
| 53 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x2000, 0x2000; |
103 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x2000, 0x2000; |
| 54 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROM, 0x4000, 0x2000; |
104 | @M[0x8000 .. 0x9fff] = unpack "C*", substr $ROMS, 0x4000, 0x2000; |
|
|
105 | @M[0xa000 .. 0xa7ff] = unpack "C*", substr $ROMS, 0x6000, 0x0800 if $VT131; |
| 55 | } else { |
106 | } else { |
| 56 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000; |
107 | @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROMS, 0x0000, 0x2000; |
| 57 | } |
108 | } |
| 58 | |
109 | |
| 59 | ############################################################################# |
110 | ############################################################################# |
| 60 | # cpu registers and I/O support |
111 | # 8085 CPU registers and I/O support |
| 61 | |
112 | |
| 62 | my $PTY; # the pty we allocated, if any |
113 | my $PTY; # the pty we allocated, if any |
| 63 | my $PRSTATUS = 0; |
|
|
| 64 | |
114 | |
| 65 | # 8080/8085 registers |
115 | # 8080/8085 registers |
| 66 | # b, c, d, e, h, l, a |
116 | # b, c, d, e, h, l, a |
| 67 | my ($A, $B, $C, $D, $E, $H, $L, $A); |
117 | my ($A, $B, $C, $D, $E, $H, $L, $A); |
| 68 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
118 | my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
| … | |
… | |
| 74 | my $x; # dummy temp for instructions |
124 | my $x; # dummy temp for instructions |
| 75 | |
125 | |
| 76 | my $CLK; # rather inexact clock |
126 | my $CLK; # rather inexact clock |
| 77 | |
127 | |
| 78 | ############################################################################# |
128 | ############################################################################# |
| 79 | # the dreaded nvr1400 chip. not needed to get it going, but provided for reference |
129 | # the dreaded NVR1400 chip. not needed to get it going, but provided anyway |
| 80 | |
130 | |
| 81 | # nvram |
131 | # nvram |
| 82 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
132 | my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
| 83 | my $NVRADDR; |
133 | my $NVRADDR; |
| 84 | my $NVRDATA; |
134 | my $NVRDATA; |
| … | |
… | |
| 107 | |
157 | |
| 108 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
158 | $NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
| 109 | } |
159 | } |
| 110 | |
160 | |
| 111 | ############################################################################# |
161 | ############################################################################# |
|
|
162 | # I/O ports - output |
| 112 | |
163 | |
| 113 | my $DC11_REVERSE = 0; |
164 | my $DC11_REVERSE = 0; |
| 114 | |
165 | |
| 115 | my $XON = 1; # false if terminal wants us to pause |
166 | my $XON = 1; # false if terminal wants us to pause |
| 116 | my $PUSARTCMD; |
167 | my $PUSARTCMD; |
| … | |
… | |
| 167 | sub out_d2 { } # 0..3 == 80c/132c/60hz/50hz |
218 | sub out_d2 { } # 0..3 == 80c/132c/60hz/50hz |
| 168 | |
219 | |
| 169 | sub out_82 { |
220 | sub out_82 { |
| 170 | # keyboard |
221 | # keyboard |
| 171 | |
222 | |
| 172 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INSERT L1(?) |
223 | # CLICK STARTSCAN ONLINE LOCKED | CTS DSR INS L1 |
| 173 | # CLICK STARTSCAN ONLINE LOCKED | LED1 LED2 LED3 LED4 |
224 | # CLICK STARTSCAN ONLINE LOCKED | L1 L2 L3 L4 |
| 174 | $KSTATUS = $_[0]; |
225 | $KSTATUS = $_[0]; |
| 175 | |
226 | |
| 176 | # start new scan unless scan in progress |
227 | # start new scan unless scan in progress |
| 177 | if (($_[0] & 0x40) && !@KXMIT) { |
228 | if (($_[0] & 0x40) && !@KXMIT) { |
| 178 | # do not reply with keys in locked mode |
229 | # do not reply with keys in locked mode |
| … | |
… | |
| 201 | $RST |= 1; |
252 | $RST |= 1; |
| 202 | } |
253 | } |
| 203 | } |
254 | } |
| 204 | |
255 | |
| 205 | ############################################################################# |
256 | ############################################################################# |
|
|
257 | # I/O ports - input |
| 206 | |
258 | |
| 207 | my $NVRBIT; |
259 | my $NVRBIT; |
| 208 | my $LBA; |
260 | my $LBA6; # twice the frequenxy of LBA7 |
| 209 | |
261 | |
| 210 | sub in_00 { # pusart data |
262 | sub in_00 { # pusart data |
| 211 | # interrupt not generated here, because infinite |
263 | # interrupt not generated here, because infinite |
| 212 | # speed does not go well with the vt102. |
264 | # speed does not go well with the vt102. |
| 213 | |
265 | |
| … | |
… | |
| 222 | sub in_22 { # modem buffer(?) |
274 | sub in_22 { # modem buffer(?) |
| 223 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
275 | # wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
| 224 | 0x20 |
276 | 0x20 |
| 225 | } |
277 | } |
| 226 | |
278 | |
| 227 | sub in_0f { } # unknown, connected to out 2f |
279 | sub in_0f { 0xff } # vt102 unknown, connected to out 2f |
| 228 | |
280 | |
| 229 | sub in_42 { # flag buffer |
281 | sub in_42 { # flag buffer |
| 230 | ++$LBA; |
282 | ++$LBA6; |
| 231 | |
283 | |
| 232 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2; |
284 | $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA6 & 0x3) == 0x2; |
| 233 | |
285 | |
| 234 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
286 | # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
| 235 | |
287 | |
| 236 | my $f = 0x85 | $NVRBIT; |
288 | my $f = 0x85 | $NVRBIT; |
| 237 | |
289 | |
| 238 | $f |= 0x02 unless $AVO; |
290 | $f |= 0x02 unless $AVO; |
| 239 | $f |= 0x40 if $LBA & 0x2; |
291 | $f |= 0x40 if $LBA6 & 0x2; |
| 240 | |
292 | |
| 241 | $f |
293 | $f |
| 242 | } |
294 | } |
| 243 | |
295 | |
| 244 | sub in_82 { # tbmt keyboard uart |
296 | sub in_82 { # tbmt keyboard uart |
| … | |
… | |
| 246 | |
298 | |
| 247 | $RST |= 1; |
299 | $RST |= 1; |
| 248 | shift @KXMIT |
300 | shift @KXMIT |
| 249 | } |
301 | } |
| 250 | |
302 | |
| 251 | sub in_03 { 0xff } # unknown, printer uart input? |
303 | sub in_03 { 0xff } # vt102 unknown, printer uart input? |
| 252 | sub in_0b { 0xff } # unknown |
304 | sub in_0b { 0xff } # vt102 unknown |
| 253 | sub in_17 { 0xff } # unknown, printer status clear by reading? |
305 | sub in_17 { 0xff } # vt102 unknown, printer status clear by reading? |
| 254 | sub in_1b { 0xff } # unknown |
306 | sub in_1b { 0xff } # vt102 unknown |
| 255 | |
307 | |
| 256 | ############################################################################# |
308 | ############################################################################# |
|
|
309 | # 8085 cpu opcodes and flag handling |
| 257 | |
310 | |
| 258 | sub sf { # set flags (ZSC - AP not implemented) |
311 | sub sf { # set flags (ZSC - AP not implemented) |
| 259 | $FS = $_[0] & 0x080; |
312 | $FS = $_[0] & 0x080; |
| 260 | $FZ = ($_[0] & 0x0ff) == 0; |
313 | $FZ = !($_[0] & 0x0ff); |
| 261 | $FC = $_[0] & 0x100; |
314 | $FC = $_[0] & 0x100; |
| 262 | |
315 | |
| 263 | $_[0] & 0xff |
316 | $_[0] &= 0xff; |
|
|
317 | } |
|
|
318 | |
|
|
319 | sub sf8 { # set flags (ZSC - AP not implemented) |
|
|
320 | $FS = $_[0] & 0x080; |
|
|
321 | $FZ = !($_[0] & 0x0ff); |
|
|
322 | $FC = 0; |
| 264 | } |
323 | } |
| 265 | |
324 | |
| 266 | sub sf_nc { # set flags except carry |
325 | sub sf_nc { # set flags except carry |
| 267 | $FS = $_[0] & 0x080; |
326 | $FS = $_[0] & 0x080; |
| 268 | $FZ = ($_[0] & 0x0ff) == 0; |
327 | $FZ = ($_[0] & 0x0ff) == 0; |
| 269 | |
328 | |
| 270 | $_[0] & 0xff |
329 | $_[0] &= 0xff; |
| 271 | } |
330 | } |
| 272 | |
331 | |
| 273 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0 .. 255; |
332 | my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0x00 .. 0xff; |
| 274 | my @ops; |
|
|
| 275 | |
333 | |
| 276 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
334 | my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
| 277 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
335 | my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
|
|
336 | |
|
|
337 | $op[0x00] = ''; |
| 278 | |
338 | |
| 279 | # mov r,r / r,M / M,r |
339 | # mov r,r / r,M / M,r |
| 280 | for my $s (0..7) { |
340 | for my $s (0..7) { |
| 281 | for my $d (0..7) { |
341 | for my $d (0..7) { |
| 282 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; |
342 | $op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; # mov |
| 283 | } |
343 | } |
| 284 | } |
344 | } |
| 285 | |
345 | |
| 286 | $op[0x00] = ''; |
346 | $op[0x76] = 'die "HLT"'; # hlt (mov m,m) |
|
|
347 | |
|
|
348 | # mvi r / M |
|
|
349 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
| 287 | |
350 | |
| 288 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
351 | $op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
| 289 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
352 | $op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
| 290 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
353 | $op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
| 291 | $op[0x31] = '$SP = IMM16' ; # lxi #d# 0xf000 because of limited stack |
354 | $op[0x31] = '$SP = IMM16' ; # lxi |
| 292 | |
355 | |
| 293 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
356 | $op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
| 294 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
357 | $op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
| 295 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
358 | $op[0x32] = '$M[IMM16 ] = $A'; # sta |
| 296 | |
359 | |
|
|
360 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
|
|
361 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
|
|
362 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
|
|
363 | |
|
|
364 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
|
|
365 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
|
|
366 | |
| 297 | sub inxdcx($$$) { |
367 | sub inxdcx($$$) { |
| 298 | $x = ($_[0] * 256 + $_[1] + $_[2]) & 0xffff; |
368 | $x = $_[0] * 256 + $_[1] + $_[2]; |
| 299 | $_[0] = $x >> 8; |
369 | ($_[0], $_[1]) = (($x >> 8) & 0xff, $x & 0xff); |
| 300 | $_[1] = $x & 0xff; |
|
|
| 301 | } |
370 | } |
| 302 | |
371 | |
| 303 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
372 | $op[0x03] = 'inxdcx $B, $C, 1'; # inx |
| 304 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
373 | $op[0x13] = 'inxdcx $D, $E, 1'; # inx |
| 305 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
374 | $op[0x23] = 'inxdcx $H, $L, 1'; # inx |
| … | |
… | |
| 308 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
377 | $op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
| 309 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
378 | $op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
| 310 | $op[0x3b] = '--$SP' ; # dcx |
379 | $op[0x3b] = '--$SP' ; # dcx |
| 311 | |
380 | |
| 312 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
381 | # "no carry" doesn't seem to be needed for vt100 - optimize? |
| 313 | $op[0x04 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] + 1" for 0..7; # inr |
|
|
| 314 | $op[0x05 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] - 1" for 0..7; # dcr |
|
|
| 315 | |
|
|
| 316 | # mvi r / M |
|
|
| 317 | $op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
382 | $op[0x04 + $_ * 8] = "sf_nc ++$reg[$_]" for 0..7; # inr |
|
|
383 | $op[0x05 + $_ * 8] = "sf_nc --$reg[$_]" for 0..7; # dcr |
|
|
384 | |
|
|
385 | $op[0x07] = ' $FC = $A & 0x80; $A = (($A << 1) + ($FC && 0x01)) & 0xff '; # rlc |
|
|
386 | $op[0x17] = ' ($FC, $A) = ($A & 0x80, (($A << 1) + ($FC && 0x01)) & 0xff)'; # ral |
|
|
387 | |
|
|
388 | $op[0x0f] = ' $FC = $A & 0x01; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
|
|
389 | $op[0x1f] = ' ($FC, $A) = ($A & 0x01, ($A >> 1) | ($FC && 0x80))'; # rar |
|
|
390 | |
|
|
391 | $op[0x2f] = '$A ^= 0xff'; # cma |
| 318 | |
392 | |
| 319 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
393 | # getting this insn wrong (its the only 16 bit insn to modify flags) |
| 320 | # wasted three of my best days with mindless vt102 rom reverse engineering |
394 | # wasted three of my best days with mindless vt102 rom reverse engineering |
| 321 | sub dad { |
395 | sub dad { |
| 322 | $x = $H * 256 + $L + $_[0]; |
396 | $x = $H * 256 + $L + $_[0]; |
| … | |
… | |
| 328 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
402 | $op[0x09] = 'dad $B * 256 + $C'; # dad |
| 329 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
403 | $op[0x19] = 'dad $D * 256 + $E'; # dad |
| 330 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
404 | $op[0x29] = 'dad $H * 256 + $L'; # dad |
| 331 | $op[0x39] = 'dad $SP '; # dad |
405 | $op[0x39] = 'dad $SP '; # dad |
| 332 | |
406 | |
| 333 | $op[0x07] = ' $FC = $A >> 7; $A = ($A * 2 + $FC) & 0xff '; # rlc |
407 | $op[0x80 + $_] = 'sf $A += + ' . $reg[$_] for 0..7; # add |
| 334 | $op[0x17] = ' ($FC, $A) = ($A >> 7, ($A * 2 + $FC) & 0xff)'; # ral |
408 | $op[0x88 + $_] = 'sf $A += ($FC && 1) + ' . $reg[$_] for 0..7; # adc |
|
|
409 | $op[0x90 + $_] = 'sf $A -= + ' . $reg[$_] for 0..7; # sub |
|
|
410 | $op[0x98 + $_] = 'sf $A -= ($FC && 1) + ' . $reg[$_] for 0..7; # sbb |
|
|
411 | $op[0xa0 + $_] = 'sf8 $A &= ' . $reg[$_] for 0..7; # ana |
|
|
412 | $op[0xa8 + $_] = 'sf8 $A ^= ' . $reg[$_] for 0..7; # xra |
|
|
413 | $op[0xb0 + $_] = 'sf8 $A |= ' . $reg[$_] for 0..7; # ora |
|
|
414 | $op[0xb8 + $_] = 'sf $x = $A - ' . $reg[$_] for 0..7; # cmp |
|
|
415 | # possible todo: optimize ora a, maybe xra a |
| 335 | |
416 | |
| 336 | $op[0x0f] = ' $FC = $A & 1; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
417 | $op[0xc6] = 'sf $A += IMM8'; # adi |
| 337 | $op[0x1f] = ' ($FC, $A) = ($A & 1, ($A >> 1) | ($FC && 0x80))'; # rar |
418 | # ce ADI NYI |
|
|
419 | $op[0xd6] = 'sf $A -= IMM8'; # sui |
|
|
420 | # de SBI NYI |
|
|
421 | $op[0xe6] = 'sf8 $A &= IMM8'; # ani |
|
|
422 | $op[0xee] = 'sf8 $A ^= IMM8'; # xri |
|
|
423 | $op[0xf6] = 'sf8 $A |= IMM8'; # ori |
|
|
424 | $op[0xfe] = 'sf $A - IMM8'; # cpi |
| 338 | |
425 | |
| 339 | $op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
426 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
| 340 | $op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
427 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
| 341 | $op[0x3a] = '$A = $M[IMM16]'; # lda |
428 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
429 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
430 | |
|
|
431 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
432 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
433 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
434 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = ($x & 0x80, $x & 0x40, $x & 0x10, $x & 0x04, $x & 0x01)'; # pop psw |
|
|
435 | |
|
|
436 | $op[0xc2 + $_ * 8] = 'BRA IMM16 ' . $cc[$_] for 0..7; # jcc |
|
|
437 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
438 | |
|
|
439 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) ' . $cc[$_] for 0..7; # ccc |
|
|
440 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
441 | |
|
|
442 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 ' . $cc[$_] for 0..7; # rcc |
|
|
443 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
444 | |
|
|
445 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
446 | |
|
|
447 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
448 | # f9 SPHL NYI |
|
|
449 | |
|
|
450 | $op[0x37] = '$FC = 1 '; # stc |
|
|
451 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
452 | |
|
|
453 | $op[0xd3] = 'OUT'; # out |
|
|
454 | $op[0xdb] = 'IN'; # in |
|
|
455 | |
|
|
456 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
457 | |
|
|
458 | # e3 xthl NYI # @ 917b, hl <-> (sp) |
| 342 | |
459 | |
| 343 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
460 | $op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
| 344 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
461 | $op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
| 345 | |
462 | |
| 346 | $op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
463 | $op[0xf3] = '$IFF = 0'; # DI |
| 347 | $op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
464 | $op[0xfb] = '$IFF = 1'; # EI |
| 348 | |
465 | |
| 349 | # yeah, the fucking setup screens actually use daa... |
466 | # yeah, the fucking setup screens actually use daa... |
| 350 | $op[0x27] = ' |
467 | $op[0x27] = ' |
| 351 | my ($h, $l); |
468 | my ($h, $l); |
| 352 | |
469 | |
| 353 | ($h, $l) = ($A >> 4, $A & 15); |
470 | ($h, $l) = ($A >> 4, $A & 15); |
| 354 | |
471 | |
| 355 | if ($l > 9 || $FA) { |
472 | if ($l > 9 || $FA) { |
| 356 | $A = sf $A + 6; |
473 | sf $A += 6; |
| 357 | ($h, $l) = ($A >> 4, $A & 15); |
474 | ($h, $l) = ($A >> 4, $A & 15); |
| 358 | } |
475 | } |
| 359 | |
476 | |
| 360 | if ($h > 9 || $FC) { |
477 | if ($h > 9 || $FC) { |
| 361 | $h += 6; |
478 | $h += 6; |
| 362 | $A = ($h * 16 + $l) & 0xff; |
479 | $A = ($h * 16 + $l) & 0xff; |
| 363 | } |
480 | } |
| 364 | '; # daa, almost certainly borked, also, acarry not set by sf |
481 | '; # daa, almost certainly borked, also, acarry not set by sf |
| 365 | |
482 | |
| 366 | $op[0x2f] = '$A ^= 0xff'; # cma |
|
|
| 367 | |
|
|
| 368 | $op[0x37] = '$FC = 1 '; # stc |
|
|
| 369 | $op[0x3f] = '$FC = !$FC'; # cmc |
|
|
| 370 | |
|
|
| 371 | $op[0x76] = 'die "HLT"'; # hlt |
|
|
| 372 | |
|
|
| 373 | $op[0x80 + $_] = '$A = sf $A + ' . $reg[$_] for 0..7; # add |
|
|
| 374 | $op[0x88 + $_] = '$A = sf $A + $FC + ' . $reg[$_] for 0..7; # adc |
|
|
| 375 | $op[0x90 + $_] = '$A = sf $A - ' . $reg[$_] for 0..7; # sub |
|
|
| 376 | $op[0x98 + $_] = '$A = sf $A - $FC - ' . $reg[$_] for 0..7; # sbb |
|
|
| 377 | $op[0xa0 + $_] = '$A = sf $A & ' . $reg[$_] for 0..7; # ana |
|
|
| 378 | $op[0xa8 + $_] = '$A = sf $A ^ ' . $reg[$_] for 0..7; # xra |
|
|
| 379 | $op[0xb0 + $_] = '$A = sf $A | ' . $reg[$_] for 0..7; # ora |
|
|
| 380 | $op[0xb8 + $_] = ' sf $A - ' . $reg[$_] for 0..7; # cmp |
|
|
| 381 | # possible todo: optimize ora a, maybe xra a |
|
|
| 382 | |
|
|
| 383 | $op[0xc6 + $_] = '$A = sf $A + IMM8'; # adi |
|
|
| 384 | $op[0xd6 + $_] = '$A = sf $A - IMM8'; # sui |
|
|
| 385 | $op[0xe6 + $_] = '$A = sf $A & IMM8'; # ani |
|
|
| 386 | $op[0xee + $_] = '$A = sf $A ^ IMM8'; # xri |
|
|
| 387 | $op[0xf6 + $_] = '$A = sf $A | IMM8'; # ori |
|
|
| 388 | $op[0xfe + $_] = ' sf $A - IMM8'; # cpi |
|
|
| 389 | |
|
|
| 390 | $op[0xc1] = '($C, $B) = (POP, POP)'; # pop |
|
|
| 391 | $op[0xd1] = '($E, $D) = (POP, POP)'; # pop |
|
|
| 392 | $op[0xe1] = '($L, $H) = (POP, POP)'; # pop |
|
|
| 393 | $op[0xf1] = '($x, $A) = (POP, POP); ($FS, $FZ, $FA, $FP, $FC) = (!!($x & 0x80), !!($x & 0x40), !!($x & 0x10), !!($x & 0x04), !!($x & 0x01))'; # pop psw |
|
|
| 394 | |
|
|
| 395 | $op[0xeb] = '($D, $E, $H, $L) = ($H, $L, $D, $E)'; # xchg |
|
|
| 396 | |
|
|
| 397 | $op[0xc2 + $_ * 8] = 'BRA IMM16 ' . $cc[$_] for 0..7; # jcc |
|
|
| 398 | $op[0xc3] = 'JMP IMM16'; # jmp |
|
|
| 399 | |
|
|
| 400 | $op[0xc4 + $_ * 8] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16) ' . $cc[$_] for 0..7; # ccc |
|
|
| 401 | $op[0xcd] = '(PUSH PC >> 8), (PUSH PC & 0xff), (BRA IMM16)'; # call |
|
|
| 402 | |
|
|
| 403 | $op[0xc7 + $_ * 8] = "JMP $_ * 8" for 0..7; # rst |
|
|
| 404 | |
|
|
| 405 | $op[0xc0 + $_ * 8] = 'BRA POP + POP * 256 ' . $cc[$_] for 0..7; # rcc |
|
|
| 406 | $op[0xc9] = 'JMP POP + POP * 256'; # ret |
|
|
| 407 | |
|
|
| 408 | $op[0xc5] = 'PUSH $B; PUSH $C'; |
|
|
| 409 | $op[0xd5] = 'PUSH $D; PUSH $E'; |
|
|
| 410 | $op[0xe5] = 'PUSH $H; PUSH $L'; |
|
|
| 411 | $op[0xf5] = 'PUSH $A; PUSH +($FS && 0x80) | ($FZ && 0x40) | ($FA && 0x10) | ($FP && 0x04) | ($FC && 0x01)'; # psw |
|
|
| 412 | |
|
|
| 413 | $op[0xd3] = 'OUT'; # out |
|
|
| 414 | $op[0xdb] = 'IN'; # in |
|
|
| 415 | |
|
|
| 416 | # e3 xthl @ 917b, hl <-> (sp) |
|
|
| 417 | |
|
|
| 418 | $op[0xe9] = 'JMP $H * 256 + $L'; # pchl |
|
|
| 419 | |
|
|
| 420 | $op[0xf3] = '$IFF = 0'; # DI |
|
|
| 421 | $op[0xfb] = '$IFF = 1'; # EI |
|
|
| 422 | |
|
|
| 423 | @ops = @op; # for debugging #d# |
|
|
| 424 | |
|
|
| 425 | ############################################################################# |
483 | ############################################################################# |
|
|
484 | # print cpu status for debugging purposes |
| 426 | |
485 | |
| 427 | # print cpu status, for debugging |
486 | # print cpu status, for debugging |
| 428 | sub status { |
487 | sub status { |
| 429 | my $PC = shift || $PC; |
488 | my $PC = shift || $PC; |
| 430 | |
489 | |
| … | |
… | |
| 434 | ($FZ ? "1" : "0") |
493 | ($FZ ? "1" : "0") |
| 435 | . ($FS ? "1" : "0") |
494 | . ($FS ? "1" : "0") |
| 436 | . ($FC ? "1" : "0") |
495 | . ($FC ? "1" : "0") |
| 437 | . ($FA ? "1" : "0") |
496 | . ($FA ? "1" : "0") |
| 438 | . ($FP ? "1" : "0"), |
497 | . ($FP ? "1" : "0"), |
| 439 | $M[$PC], $ops[$M[$PC]]; |
498 | $M[$PC], $op[$M[$PC]]; |
| 440 | } |
499 | } |
| 441 | |
500 | |
| 442 | ############################################################################# |
501 | ############################################################################# |
|
|
502 | # video emulation |
| 443 | |
503 | |
| 444 | my @chr = ( |
504 | my @CHARMAP = ( |
| 445 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
505 | " " , "\x{29eb}", "\x{2592}", "\x{2409}", |
| 446 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
506 | "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
| 447 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
507 | "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
| 448 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
508 | "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
| 449 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
509 | "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
| … | |
… | |
| 451 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
511 | "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
| 452 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
512 | "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
| 453 | (map chr, 0x020 .. 0x7e), |
513 | (map chr, 0x020 .. 0x7e), |
| 454 | ); |
514 | ); |
| 455 | |
515 | |
| 456 | utf8::encode $_ for @chr; |
516 | utf8::encode $_ for @CHARMAP; |
| 457 | |
517 | |
| 458 | my @sgr; # sgr sequences for attributes |
518 | my @SGR; # sgr sequences for attributes |
| 459 | |
519 | |
| 460 | for (0x00 .. 0xff) { |
520 | for (0x00 .. 0xff) { |
| 461 | my $sgr = ""; |
521 | my $sgr = ""; |
|
|
522 | |
|
|
523 | # ~1 sgr 5 blink |
|
|
524 | # ~2 sgr 4 underline |
|
|
525 | # ~4 sgr 1 bold |
|
|
526 | # 0x80 in attr, sgr 7, reversed |
| 462 | |
527 | |
| 463 | $sgr .= ";5" unless $_ & 0x01; |
528 | $sgr .= ";5" unless $_ & 0x01; |
| 464 | $sgr .= ";4" unless $_ & 0x02; |
529 | $sgr .= ";4" unless $_ & 0x02; |
| 465 | $sgr .= ";1" unless $_ & 0x04; |
530 | $sgr .= ";1" unless $_ & 0x04; |
| 466 | $sgr .= ";7" if $_ & 0x80; |
531 | $sgr .= ";7" if $_ & 0x80; |
| 467 | |
532 | |
| 468 | $sgr[$_] = "\e[${sgr}m"; |
533 | $SGR[$_] = "\e[${sgr}m"; |
| 469 | } |
534 | } |
| 470 | |
535 | |
| 471 | sub prscr { |
536 | my @LED = $VT102 |
|
|
537 | ? qw(L1 INSERT DSR CTS LOCKED LOCAL SCAN BEEP) |
|
|
538 | : qw(L4 L3 L2 L1 LOCKED LOCAL SCAN BEEP); |
|
|
539 | |
|
|
540 | # display screen |
|
|
541 | sub display { |
| 472 | my $i = 0x2000; |
542 | my $i = 0x2000; |
| 473 | |
543 | |
|
|
544 | my $leds = join " ", map $KSTATUS & 2**$_ ? "\e[7m$LED[$_]\e[m" : "$LED[$_]", reverse 0 .. $#LED; |
|
|
545 | |
| 474 | my $scr = sprintf "\e[H--- KBD %08b CLK %d\e[K\n", $KSTATUS, $CLK; |
546 | my $scr = sprintf "\e[H--- LED [ %s ] CLK %d\e[K\n", $leds, $CLK; |
| 475 | |
547 | |
| 476 | $scr .= "\e[?5" . ($DC11_REVERSE ? "h" : "l"); |
548 | $scr .= "\e[?5" . ($DC11_REVERSE ? "h" : "l"); |
| 477 | |
549 | |
| 478 | line: |
550 | line: |
| 479 | for my $y (0 .. 25) { # ntsc, two vblank delay lines, up to 24 text lines |
551 | for my $y (0 .. 25) { # ntsc, two vblank delay lines, up to 24 text lines |
| … | |
… | |
| 493 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
565 | $i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
| 494 | |
566 | |
| 495 | next line; |
567 | next line; |
| 496 | } |
568 | } |
| 497 | |
569 | |
| 498 | my $sgr = $sgr[ ($M[$i++ + 0x1000] & 15) | ($c & 0x80)]; |
570 | my $sgr = $SGR[ ($M[$i++ + 0x1000] & 15) | ($c & 0x80)]; |
| 499 | |
|
|
| 500 | # ~1 sgr 5 blink |
|
|
| 501 | # ~2 sgr 4 underline |
|
|
| 502 | # ~4 sgr 1 bold |
|
|
| 503 | # 0x80 in attr, sgr 7, reversed |
|
|
| 504 | |
571 | |
| 505 | $scr .= $prev_sgr = $sgr if $sgr ne $prev_sgr; |
572 | $scr .= $prev_sgr = $sgr if $sgr ne $prev_sgr; |
| 506 | |
573 | |
| 507 | $scr .= $chr[$c & 0x7f]; |
574 | $scr .= $CHARMAP[$c & 0x7f]; |
| 508 | } |
575 | } |
| 509 | |
576 | |
| 510 | $scr .= "\e[K\nvideo overflow\e[K\n"; |
577 | $scr .= "\e[K\nvideo overflow\e[K\n"; |
| 511 | last; |
578 | last; |
| 512 | } |
579 | } |
| 513 | |
580 | |
| 514 | $scr .= "\e[m"; |
581 | $scr .= "\e[m\e[J"; |
| 515 | |
|
|
| 516 | if (0) { |
|
|
| 517 | $scr .= "\e[K\n"; |
|
|
| 518 | for my $o (0x200 .. 0x232) { |
|
|
| 519 | $scr .= sprintf "%04x:", $o * 16; |
|
|
| 520 | for (0..15) { |
|
|
| 521 | $scr .= sprintf " %02x", $M[$o * 16 + $_]; |
|
|
| 522 | } |
|
|
| 523 | $scr .= "\e[K\n"; |
|
|
| 524 | } |
|
|
| 525 | } |
|
|
| 526 | |
|
|
| 527 | $scr .= "\e[J"; |
|
|
| 528 | |
582 | |
| 529 | syswrite STDOUT, $scr; |
583 | syswrite STDOUT, $scr; |
| 530 | } |
584 | } |
| 531 | |
585 | |
| 532 | ############################################################################# |
586 | ############################################################################# |
| 533 | |
587 | # keyboard handling |
| 534 | if (@ARGV) { |
|
|
| 535 | require IO::Pty; |
|
|
| 536 | $PTY = IO::Pty->new; |
|
|
| 537 | |
|
|
| 538 | my $slave = $PTY->slave; |
|
|
| 539 | |
|
|
| 540 | $PTY->set_winsize (24, 80); |
|
|
| 541 | |
|
|
| 542 | unless (fork) { |
|
|
| 543 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
|
|
| 544 | |
|
|
| 545 | close $PTY; |
|
|
| 546 | |
|
|
| 547 | open STDIN , "<&", $slave; |
|
|
| 548 | open STDOUT, ">&", $slave; |
|
|
| 549 | open STDERR, ">&", $slave; |
|
|
| 550 | |
|
|
| 551 | system "stty ixoff erase ^H"; |
|
|
| 552 | |
|
|
| 553 | $PTY->make_slave_controlling_terminal; |
|
|
| 554 | $PTY->close_slave; |
|
|
| 555 | |
|
|
| 556 | exec @ARGV; |
|
|
| 557 | } |
|
|
| 558 | |
|
|
| 559 | $PTY->close_slave; |
|
|
| 560 | |
|
|
| 561 | } else { |
|
|
| 562 | open $PTY, "</dev/null" or die;#d |
|
|
| 563 | } |
|
|
| 564 | |
|
|
| 565 | ############################################################################# |
|
|
| 566 | |
|
|
| 567 | # initial key input, to set up online mode etc. |
|
|
| 568 | @KQUEUE = ( |
|
|
| 569 | 0x7b, -0x7b, # setup |
|
|
| 570 | 0, # delay |
|
|
| 571 | 0x28, -0x28, # 4, toggle local/online |
|
|
| 572 | 0x38, -0x38, # 5, setup b |
|
|
| 573 | 0, # delay |
|
|
| 574 | (0x10, -0x10) x 2, # cursor right |
|
|
| 575 | 0x37, -0x37, # 6 toggle soft scroll |
|
|
| 576 | (0x10, -0x10) x 1, # cursor right |
|
|
| 577 | 0x37, -0x37, # 6 toggle autorepeat off |
|
|
| 578 | (0x10, -0x10) x 8, # cursor right |
|
|
| 579 | 0x37, -0x37, # 6 toggle keyclick |
|
|
| 580 | (0x10, -0x10) x 1, # cursor right |
|
|
| 581 | $VT102 ? () : (0x37, -0x37), # 6 toggle ansi/vt52 |
|
|
| 582 | (0x10, -0x10) x 7, # cursor right |
|
|
| 583 | 0x37, -0x37, # 6 toggle wrap around |
|
|
| 584 | 0x7b, -0x7b, # leave setup |
|
|
| 585 | ); |
|
|
| 586 | |
|
|
| 587 | ############################################################################# |
|
|
| 588 | |
588 | |
| 589 | # 0x080 shift, 0x100 ctrl |
589 | # 0x080 shift, 0x100 ctrl |
| 590 | my %KEYMAP = ( |
590 | my %KEYMAP = ( |
| 591 | # these get overwritten by generic control codes, but both work, so i have no priority |
|
|
| 592 | # tid fix these. |
|
|
| 593 | "\t" => 0x3a, |
591 | "\t" => 0x3a, |
| 594 | "\r" => 0x64, |
592 | "\r" => 0x64, |
| 595 | "\n" => 0x44, |
593 | "\n" => 0x44, |
| 596 | |
594 | |
| 597 | "\x00" => 0x77 | 0x100, # CTRL-SPACE |
595 | "\x00" => 0x77 | 0x100, # CTRL-SPACE |
| … | |
… | |
| 622 | "\e[11~" => 0x42, # F2 |
620 | "\e[11~" => 0x42, # F2 |
| 623 | "\e[11~" => 0x31, # F3 |
621 | "\e[11~" => 0x31, # F3 |
| 624 | "\e[11~" => 0x41, # F4 |
622 | "\e[11~" => 0x41, # F4 |
| 625 | ); |
623 | ); |
| 626 | |
624 | |
| 627 | @KEYMAP{map chr, 0x20..0x40} = unpack "C*", pack "H*", |
625 | @KEYMAP{map chr, 0x20 .. 0x40, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
| 628 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9"; |
626 | "779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9" # 20..40 |
| 629 | |
|
|
| 630 | @KEYMAP{map chr, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
|
|
| 631 | "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; |
627 | . "154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; # 5b..7e |
| 632 | |
628 | |
| 633 | $KEYMAP{"\x1f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
629 | $KEYMAP{"\x1f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
| 634 | $KEYMAP{uc $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
630 | $KEYMAP{"\x20" ^ $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
| 635 | |
631 | |
| 636 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
632 | my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
| 637 | $KEYMATCH = qr{^($KEYMATCH)}s; |
633 | $KEYMATCH = qr{^($KEYMATCH)}s; |
| 638 | |
634 | |
|
|
635 | my %KMOD; |
|
|
636 | |
| 639 | sub key { |
637 | sub key { |
| 640 | my ($key) = @_; |
638 | my ($key) = @_; |
| 641 | |
639 | |
| 642 | state %MOD; |
|
|
| 643 | |
|
|
| 644 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $MOD{0x7c}; # ctrl-up |
640 | push @KQUEUE, -0x7c if !($key & 0x100) && delete $KMOD{0x7c}; # ctrl-up |
| 645 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $MOD{0x7d}; # shift-up |
641 | push @KQUEUE, -0x7d if !($key & 0x080) && delete $KMOD{0x7d}; # shift-up |
| 646 | |
642 | |
| 647 | push @KQUEUE, 0x7c if $key & 0x100 && !$MOD{0x7c}++; # ctrl-down |
643 | push @KQUEUE, 0x7c if $key & 0x100 && !$KMOD{0x7c}++; # ctrl-down |
| 648 | push @KQUEUE, 0x7d if $key & 0x080 && !$MOD{0x7d}++; # shift-down |
644 | push @KQUEUE, 0x7d if $key & 0x080 && !$KMOD{0x7d}++; # shift-down |
| 649 | |
645 | |
| 650 | $key &= 0x7f; |
646 | $key &= 0x7f; |
| 651 | push @KQUEUE, $key, -$key; |
647 | push @KQUEUE, $key, -$key; |
| 652 | } |
648 | } |
| 653 | |
649 | |
| … | |
… | |
| 666 | eval q{ sub END { system "stty sane" } }; |
662 | eval q{ sub END { system "stty sane" } }; |
| 667 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
663 | $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
| 668 | } |
664 | } |
| 669 | |
665 | |
| 670 | ############################################################################# |
666 | ############################################################################# |
|
|
667 | # initial key input, to set up online mode etc. |
|
|
668 | # could be done via nvram defaults |
|
|
669 | |
|
|
670 | @KQUEUE = ( |
|
|
671 | 0x7b, -0x7b, # setup |
|
|
672 | 0, # delay |
|
|
673 | 0x28, -0x28, # 4, toggle local/online |
|
|
674 | 0x38, -0x38, # 5, setup b |
|
|
675 | 0, # delay |
|
|
676 | (0x10, -0x10) x 2, # cursor right |
|
|
677 | 0x37, -0x37, # 6 toggle soft scroll |
|
|
678 | (0x10, -0x10) x 1, # cursor right |
|
|
679 | 0x37, -0x37, # 6 toggle autorepeat off |
|
|
680 | (0x10, -0x10) x 8, # cursor right |
|
|
681 | 0x37, -0x37, # 6 toggle keyclick |
|
|
682 | (0x10, -0x10) x 1, # cursor right |
|
|
683 | $VT102 ? () : (0x37, -0x37), # 6 toggle ansi/vt52 |
|
|
684 | (0x10, -0x10) x 7, # cursor right |
|
|
685 | 0x37, -0x37, # 6 toggle wrap around |
|
|
686 | 0x7b, -0x7b, # leave setup |
|
|
687 | ); |
|
|
688 | |
|
|
689 | ############################################################################# |
|
|
690 | # process/pty management |
|
|
691 | |
|
|
692 | require IO::Pty; |
|
|
693 | $PTY = IO::Pty->new; |
|
|
694 | |
|
|
695 | my $slave = $PTY->slave; |
|
|
696 | |
|
|
697 | $PTY->set_winsize (24, 80); |
|
|
698 | |
|
|
699 | unless (fork) { |
|
|
700 | $ENV{TERM} = $VT102 ? "vt102" : "vt100"; |
|
|
701 | |
|
|
702 | close $PTY; |
|
|
703 | |
|
|
704 | open STDIN , "<&", $slave; |
|
|
705 | open STDOUT, ">&", $slave; |
|
|
706 | open STDERR, ">&", $slave; |
|
|
707 | |
|
|
708 | system "stty ixoff erase ^H"; |
|
|
709 | |
|
|
710 | $PTY->make_slave_controlling_terminal; |
|
|
711 | $PTY->close_slave; |
|
|
712 | |
|
|
713 | @ARGV = "sh" unless @ARGV; |
|
|
714 | exec @ARGV; |
|
|
715 | } |
|
|
716 | |
|
|
717 | $PTY->close_slave; |
|
|
718 | |
|
|
719 | ############################################################################# |
|
|
720 | # the actual hardware simulator |
| 671 | |
721 | |
| 672 | my @ICACHE; # compiled instruction cache |
722 | my @ICACHE; # compiled instruction cache |
| 673 | |
723 | |
| 674 | # the cpu |
|
|
| 675 | while () { |
724 | while () { |
| 676 | |
|
|
| 677 | # execute extended basic blocks |
725 | # execute extended basic blocks |
| 678 | $PC = ($ICACHE[$PC] ||= do { |
726 | $PC = ($ICACHE[$PC] ||= do { |
| 679 | my $pc = $PC; |
727 | my $pc = $PC; |
| 680 | |
728 | |
| 681 | my $insn = ""; |
729 | my $insn = ""; |
| 682 | |
730 | |
| 683 | # the jit compiler |
731 | # the jit compiler |
| 684 | for (0..15) { |
732 | for (0..31) { |
| 685 | |
|
|
| 686 | # optional tracing support |
|
|
| 687 | if (0) { |
|
|
| 688 | $insn .= qq< |
|
|
| 689 | if (\$PRSTATUS) { |
|
|
| 690 | status $pc; |
|
|
| 691 | die unless --\$PRSTATUS; |
|
|
| 692 | } |
|
|
| 693 | >; |
|
|
| 694 | } |
|
|
| 695 | |
|
|
| 696 | my $imm; |
733 | my $imm; |
| 697 | my $op = $op[$M[$pc++]]; |
734 | my $op = $op[$M[$pc++]]; |
| 698 | |
735 | |
| 699 | for ($op) { |
736 | for ($op) { |
| 700 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
737 | s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
| … | |
… | |
| 725 | |
762 | |
| 726 | # things we do from time too time only |
763 | # things we do from time too time only |
| 727 | unless ($CLK & 0xf) { |
764 | unless ($CLK & 0xf) { |
| 728 | # do I/O |
765 | # do I/O |
| 729 | |
766 | |
| 730 | unless ($CLK & 0x7ff) { |
767 | unless ($CLK & 0xfff) { |
| 731 | |
768 | |
| 732 | # pty/serial I/O |
769 | # pty/serial I/O |
| 733 | unless (@PUSARTRECV || @KQUEUE || !$PTY) { |
770 | unless ((@PUSARTRECV >= 128) || @KQUEUE || !$PTY) { |
| 734 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
771 | my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
| 735 | |
772 | |
| 736 | if (select $rin, undef, undef, 0) { |
773 | if (select $rin, undef, undef, 0) { |
| 737 | sysread $PTY, my $buf, 256; |
774 | sysread $PTY, my $buf, 256; |
| 738 | push @PUSARTRECV, unpack "C*", $buf; |
775 | push @PUSARTRECV, unpack "C*", $buf; |
| … | |
… | |
| 759 | unless ($CLK & 0x1ff) { |
796 | unless ($CLK & 0x1ff) { |
| 760 | $RST |= 4; # vertical retrace |
797 | $RST |= 4; # vertical retrace |
| 761 | } |
798 | } |
| 762 | |
799 | |
| 763 | # handle video hardware |
800 | # handle video hardware |
| 764 | |
|
|
| 765 | unless ($CLK & 0x1fff) { |
801 | unless ($CLK & 0x3fff) { |
| 766 | prscr; |
802 | display; |
| 767 | } |
803 | } |
| 768 | } |
804 | } |
| 769 | |
805 | |
| 770 | # the interrupt logic |
806 | # the interrupt logic |
| 771 | $x = $INTPEND & ~$INTMASK; |
807 | if (($RST || ($INTPEND & ~$INTMASK)) && $IFF) { |
| 772 | if (($RST || $x) && $IFF) { |
|
|
| 773 | # rst 1 kbd data available |
808 | # rst 1 kbd data available |
| 774 | # rst 2 pusart xmit+recv flag |
809 | # rst 2 pusart xmit+recv flag |
| 775 | # rst 4 vertical retrace |
810 | # rst 4 vertical retrace |
| 776 | # 5.5 vt125 mb7 trans ready (serial send?) |
811 | # 5.5 vt125 mb7 trans ready (serial send?) |
| 777 | # 6.5 vt125 mb7 read ready (something modem?) |
812 | # 6.5 vt125 mb7 read ready (something modem?) |
| 778 | # 7.5 vt125 mb7 vblank h(?) |
813 | # 7.5 vt125 mb7 vblank h(?) |
| 779 | # trap vt125 mbi init h(?) |
814 | # trap vt125 mbi init h(?) |
| 780 | my $vec; |
815 | my $vec; |
| 781 | |
816 | |
|
|
817 | $x = $INTPEND & ~$INTMASK; |
|
|
818 | |
| 782 | if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
819 | if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
| 783 | } elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
820 | } elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
| 784 | } elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
821 | } elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
| 785 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # for some reason, this breaks vt102 |
822 | # } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # the vt102 firmware doesn't like combined interrupts |
| 786 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
823 | } elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
| 787 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
824 | } elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
| 788 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
825 | } elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
| 789 | } else { |
826 | } else { |
| 790 | die; |
827 | die; |
| … | |
… | |
| 795 | $PC = $vec; |
832 | $PC = $vec; |
| 796 | |
833 | |
| 797 | $IFF = 0; |
834 | $IFF = 0; |
| 798 | } |
835 | } |
| 799 | } |
836 | } |
|
|
837 | |
|
|
838 | ############################################################################# |
|
|
839 | # roms in the data section + one newline |
|
|
840 | # |
|
|
841 | # vt100 @ 0x0000+0x0800 23-032E2 |
|
|
842 | # vt100 @ 0x0800+0x0800 23-061E2 |
|
|
843 | # vt100 @ 0x1000+0x0800 23-033E2 |
|
|
844 | # vt100 @ 0x1800+0x0800 23-034E2 |
|
|
845 | # |
|
|
846 | # vt102 @ 0x0000+0x8000 23-226E4 |
|
|
847 | # vt102 @ 0x8000+0x8000 23-225E4 |
|
|
848 | # |
|
|
849 | # vt131 @ 0xa000+0x0800 23-280E2 |
|
|
850 | # |
| 800 | |
851 | |
| 801 | __DATA__ |
852 | __DATA__ |
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| 803 | 2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
854 | 2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
| 804 | ! ͋!2[ 2v!!"I!>2s >2 B>2y >2!2!&l" >@:X!:!͔>2!b:!K>G:| !p ^!p" :!x:! u> |
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| … | |
… | |
| 908 | |
959 | |
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:,!ڢy2!:!OW!e! oһ$zW>0)1!2@3#4$5%6^7&8*9(-_=+`~[{]};:/?'",<.>\| poytwq ][iure1 `-9743=08652 Ѱ |
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| 910 | \lkgfa ';jhds
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961 | \lkgfa ';jhds
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| 911 | !O! ,ͳʄmÝ |
962 | !O! ,ͳʄmÝ |
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|
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|
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964 | 8>2\0͍2\0:y!ʟ25!24!̞D!;!~G6 ̞:70x!F!~ɞ˞w:5!ڞ:4!ឯ͆;:<!Bʾ:B!.ڇ!!~#;:!;D!!"!F#ux2A0:{!4R*|!x7fÇ:%0H:l :5!S*6!:4!k!w f##]~#fo:K 2\0 ) şZşG>2\0:70ʫx!z!«!F!~ w!B0~w:40x· !l 62\0+2\012 vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv ^ y5k6! |
|
|
965 | "~AC>Bw2"!z"pv"x">Cw2"!n"pv"l"!!~< N[> 2,!NA p##!(0S{}ˠ>w #
» xE##ö6T]#zpw#sX6#N|p}Hpv"x"7: |
|
|
966 | "C*C !(0:!@W
==}wï2C!2D!z5*b Q!{!| gH:d G| gW]>6 #k<|eo ozW>Ê |
