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Comparing vt102/vt102 (file contents):
Revision 1.2 by root, Mon Dec 1 15:37:50 2014 UTC vs.
Revision 1.5 by root, Mon Dec 1 18:41:36 2014 UTC

… …
21# ./vt102 bash 21# ./vt102 bash
22# ./vt102 telnet towel.blinkenlights.nl 22# ./vt102 telnet towel.blinkenlights.nl
23# ./vt102 curl http://artscene.textfiles.com/vt100/trekvid.vt 23# ./vt102 curl http://artscene.textfiles.com/vt100/trekvid.vt
24# ./vt102 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! 24# ./vt102 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d!
25 25
26# TODO: ctrl
27
26use common::sense; 28use common::sense;
27 29
28$| = 1; 30$| = 1;
29 31
30my $VT102 = 0; 32my $VT102 = 1;
31my $AVO = $VT102 || 1; 33my $AVO = $VT102 || 1;
32my $KBD = 1; 34my $KBD = 1;
33 35
34############################################################################# 36#############################################################################
35 37# rom initialising
36my $PTY; # the pty we allocated, if any
37 38
38my $ROM = do { 39my $ROM = do {
39 binmode DATA; 40 binmode DATA;
40 local $/; 41 local $/;
41 <DATA> 42 <DATA>
… …
54} else { 55} else {
55 @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000; 56 @M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000;
56} 57}
57 58
58############################################################################# 59#############################################################################
60# cpu registers and I/O support
59 61
62my $PTY; # the pty we allocated, if any
60my $PRSTATUS = 0; 63my $PRSTATUS = 0;
61 64
62# 8080/8085 registers 65# 8080/8085 registers
63# b, c, d, e, h, l, a 66# b, c, d, e, h, l, a
64my ($A, $B, $C, $D, $E, $H, $L, $A); 67my ($A, $B, $C, $D, $E, $H, $L, $A);
… …
71my $x; # dummy temp for instructions 74my $x; # dummy temp for instructions
72 75
73my $CLK; # rather inexact clock 76my $CLK; # rather inexact clock
74 77
75############################################################################# 78#############################################################################
79# the dreaded nvr1400 chip. not needed to get it going, but provided for reference
76 80
77# nvram 81# nvram
78my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes 82my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes
79my $NVRADDR; 83my $NVRADDR;
80my $NVRDATA; 84my $NVRDATA;
81my $NVRLATCH; 85my $NVRLATCH;
82 86
83#$NVR[$_] = $_ for 0..99;#d#
84
85my @NVRCMD = ( 87my @NVRCMD = (
86 sub { # accept data
87 $NVRDATA = ($NVRDATA << 1) + $_[1]; 88 sub { $NVRDATA = ($NVRDATA << 1) + $_[1]; }, # 0 accept data
88 }, 89 sub { $NVRADDR = ($NVRADDR << 1) + $_[1]; }, # 1 accept addr
89 sub { # accept addr 90 sub { ($NVRDATA <<= 1) & 0x4000 }, # 2 shift out
90 $NVRADDR = ($NVRADDR << 1)+ $_[1]; 91 undef, # 3 not used, will barf
91 },
92 sub { # shift out
93 my $bit = $NVRDATA & 0x02000;
94 $NVRDATA *= 2;
95 $bit
96 },
97 undef,
98 sub { # write
99 print "NVR WRITE $_[0]\n";#d#
100 $NVR[$_[0]] = $NVRDATA & 0x3fff; 92 sub { $NVR[$_[0]] = $NVRDATA & 0x3fff; }, # 4 write
101 }, 93 sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase
102 sub { # erase 94 sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read
103 print "NVR ERASE $_[0]\n";#d# 95 sub { }, # 7 standby
104 $NVR[$_[0]] = 0x3fff;
105 },
106 sub { # read
107# print "NVR READ $_[0] = $NVR[$_[0]]\n";#d#
108 $NVRDATA = $NVR[$_[0]];
109 },
110 sub { # standby
111 },
112); 96);
113 97
114my @bitidx; 98my @bitidx;
115$bitidx[1 << $_] = 9 - $_ for 0..9; 99$bitidx[1 << $_] = 9 - $_ for 0..9;
116 100
… …
141 125
142sub out_00 { # pusartdata 126sub out_00 { # pusartdata
143 # handle xon/xoff, but also pass it through 127 # handle xon/xoff, but also pass it through
144 if ($_[0] == 0x13) { 128 if ($_[0] == 0x13) {
145 $XON = 0; 129 $XON = 0;
130 return;#d#
146 } elsif ($_[0] == 0x11) { 131 } elsif ($_[0] == 0x11) {
147 $XON = 1; 132 $XON = 1;
133 return;#d#
148 } 134 }
149 135
150 syswrite $PTY, chr $_[0]; 136 syswrite $PTY, chr $_[0];
151 137
152 $INTPEND |= 1; # 5.5 txrdy 138 $INTPEND |= 1;
153} 139}
154 140
155sub out_01 { 141sub out_01 {
156 $PUSARTCMD = shift; 142 $PUSARTCMD = shift;
157 143
158 $INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy 144 $INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy
159 $INTPEND |= 2 if $PUSARTCMD & 0x04; # VT102, 6.5 rxrdy 145 $INTPEND |= 2 if $PUSARTCMD & 0x04 && !@PUSARTRECV; # VT102, 6.5 rxrdy, needed for some reason
160} 146}
161 147
162sub out_02 { } # baudrate generator 148sub out_02 { } # baudrate generator
163 149
164sub out_23 { } # unknown 150sub out_23 { } # unknown
… …
215 201
216my $NVRBIT; 202my $NVRBIT;
217my $LBA; 203my $LBA;
218 204
219sub in_00 { # pusart data 205sub in_00 { # pusart data
220# print "READ PUSARTDATA (@PUSARTRECV)\n"; 206 # interrupt not generated here, because infinite
221 207 # speed does not go well with the vt102.
222# $RST |= 2 if $#PUSARTRECV && $XON;
223# $INTPEND |= 2 if $#PUSARTRECV && $XON;
224 208
225 shift @PUSARTRECV 209 shift @PUSARTRECV
226} 210}
227 211
228sub in_01 { # pusart status 212sub in_01 { # pusart status
… …
237 221
238sub in_0f { } # unknown, connected to out 2f 222sub in_0f { } # unknown, connected to out 2f
239 223
240sub in_42 { # flag buffer 224sub in_42 { # flag buffer
241 ++$LBA; 225 ++$LBA;
242# ++$LBA;
243# printf "%04x lba %04x, %04x\n", $PC, $LBA, $CLK;
244 226
245 $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2; 227 $NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2;
246 228
247 # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY 229 # KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY
248 230
… …
266sub in_17 { 0xff } # unknown, printer status clear by reading? 248sub in_17 { 0xff } # unknown, printer status clear by reading?
267sub in_1b { 0xff } # unknown 249sub in_1b { 0xff } # unknown
268 250
269############################################################################# 251#############################################################################
270 252
271sub sf { 253sub sf { # set flags (ZSC - AP not implemented)
272 $FS = $_[0] & 0x080; 254 $FS = $_[0] & 0x080;
273 $FZ = ($_[0] & 0x0ff) == 0; 255 $FZ = ($_[0] & 0x0ff) == 0;
274 $FC = $_[0] & 0x100; 256 $FC = $_[0] & 0x100;
275 257
276 $_[0] & 0xff 258 $_[0] & 0xff
277} 259}
278 260
279sub sf_nc { 261sub sf_nc { # set flags except carry
280 $FS = $_[0] & 0x080; 262 $FS = $_[0] & 0x080;
281 $FZ = ($_[0] & 0x0ff) == 0; 263 $FZ = ($_[0] & 0x0ff) == 0;
282 264
283 $_[0] & 0xff 265 $_[0] & 0xff
284} 266}
… …
453} 435}
454 436
455############################################################################# 437#############################################################################
456 438
457my @chr = ( 439my @chr = (
458 " ", 440 " " , "\x{29eb}", "\x{2592}", "\x{2409}",
459 "\x{29eb}", 441 "\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}",
460 "\x{2592}", 442 "\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}",
461 "\x{2409}", 443 "\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}",
462 "\x{240c}", 444 "\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}",
463 "\x{240d}", 445 "\x{23bd}", "\x{251c}", "\x{2524}", "\x{2534}",
464 "\x{240a}", 446 "\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}",
465 "\x{00b0}", 447 "\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}",
466 "\x{00b1}",
467 "\x{2424}",
468 "\x{240b}",
469 "\x{2518}",
470 "\x{2510}",
471 "\x{250c}",
472 "\x{2514}",
473 "\x{253c}",
474 "\x{23ba}",
475 "\x{23bb}",
476 "\x{2500}",
477 "\x{23bc}",
478 "\x{23bd}",
479 "\x{251c}",
480 "\x{2524}",
481 "\x{2534}",
482 "\x{252c}",
483 "\x{2502}",
484 "\x{2264}",
485 "\x{2265}",
486 "\x{03c0}",
487 "\x{2260}",
488 "\x{00a3}",
489 "\x{00b7}",
490 (map chr, 0x020 .. 0x7e), 448 (map chr, 0x020 .. 0x7e),
491 "?",
492); 449);
493 450
494utf8::encode $_ for @chr; 451utf8::encode $_ for @chr;
495 452
496sub prscr { 453sub prscr {
497 my $i = 0x2000; 454 my $i = 0x2000;
498 455
499 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; 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;
500 457
501 line: 458 line:
502 for my $y (0 .. 25) { 459 for my $y (0 .. 25) {
503 $scr .= sprintf "%2d |", ++$y; 460 $scr .= sprintf "%2d |", ++$y;
504 461
505 for (0..140) { 462 for (0..140) {
… …
549 require IO::Pty; 506 require IO::Pty;
550 $PTY = IO::Pty->new; 507 $PTY = IO::Pty->new;
551 508
552 my $slave = $PTY->slave; 509 my $slave = $PTY->slave;
553 510
511 $PTY->set_winsize (24, 80);
512
554 unless (fork) { 513 unless (fork) {
555 $ENV{TERM} = $VT102 ? "vt102" : "vt100"; 514 $ENV{TERM} = $VT102 ? "vt102" : "vt100";
556 515
557 close $PTY; 516 close $PTY;
558 517
559 open STDIN , "<&", $slave; 518 open STDIN , "<&", $slave;
560 open STDOUT, ">&", $slave; 519 open STDOUT, ">&", $slave;
561 open STDERR, ">&", $slave; 520 open STDERR, ">&", $slave;
562 521
522 system "stty ixoff erase ^H";
523
524 $PTY->make_slave_controlling_terminal;
563 close $slave; 525 $PTY->close_slave;
564 526
565 exec @ARGV; 527 exec @ARGV;
566 } 528 }
567 529
568 close $slave; 530 $PTY->close_slave;
531
569} else { 532} else {
570 open $PTY, "</dev/null" or die;#d 533 open $PTY, "</dev/null" or die;#d
571} 534}
572 535
573############################################################################# 536#############################################################################
… …
721 eval "use integer; sub { $insn }" or die "$insn: $@" 684 eval "use integer; sub { $insn }" or die "$insn: $@"
722 })->(); 685 })->();
723 686
724 ++$CLK; 687 ++$CLK;
725 688
726 #TODO: just check on ret instructions or so 689 # things we do from time too time only
690 unless ($CLK & 0xf) {
691 # do I/O
692
693 unless ($CLK & 0x7ff) {
694
695 # pty/serial I/O
696 unless (@PUSARTRECV || @KQUEUE || !$PTY) {
697 my $rin = ""; (vec $rin, fileno $PTY, 1) = 1;
698
699 if (select $rin, undef, undef, 0) {
700 sysread $PTY, my $buf, 256;
701 push @PUSARTRECV, unpack "C*", $buf;
702 }
703 }
704
705 # keyboard input
706 if ($KBD) {
707 while (select my $rin = "\x01", undef, undef, 0) {
708 sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF
709 or last;
710 }
711
712 stdin_parse if length $STDIN_BUF;
713 }
714 }
715
716 # kick off various interrupts
717
718 $RST |= 2 if @PUSARTRECV && $XON; # VT100, but works on vt102, too (probably not used on real hardware though)
719 #$INTPEND |= 2 if @PUSARTRECV && $XON; # VT102, 6.5 rxrdy
720
721 # kick off vertical retrace form time to time
722 unless ($CLK & 0x1ff) {
723 $RST |= 4; # vertical retrace
724 }
725
726 # handle video hardware
727
728 unless ($CLK & 0x1fff) {
729 prscr;
730 }
731 }
732
727 # the interrupt logic 733 # the interrupt logic
728 $x = $INTPEND & ~$INTMASK; 734 $x = $INTPEND & ~$INTMASK;
729
730 if (($RST || $x) && $IFF) { 735 if (($RST || $x) && $IFF) {
731 # rst 1 kbd data available 736 # rst 1 kbd data available
732 # rst 2 pusart xmit+recv flag 737 # rst 2 pusart xmit+recv flag
733 # rst 4 vertical retrace 738 # rst 4 vertical retrace
734 # 5.5 vt125 mb7 trans ready (serial send?) 739 # 5.5 vt125 mb7 trans ready (serial send?)
… …
751 $M[--$SP] = $PC >> 8; 756 $M[--$SP] = $PC >> 8;
752 $M[--$SP] = $PC & 0xff; 757 $M[--$SP] = $PC & 0xff;
753 $PC = $vec; 758 $PC = $vec;
754 759
755 $IFF = 0; 760 $IFF = 0;
756 }
757
758 # things we do from time too time only
759 unless ($CLK & 0xf) {
760 # do I/O
761
762 unless ($CLK & 0x7ff) {
763
764 # pty/serial I/O
765 unless (@PUSARTRECV || @KQUEUE || !$PTY) {
766 my $rin = ""; (vec $rin, fileno $PTY, 1) = 1;
767
768 if (select $rin, undef, undef, 0) {
769 sysread $PTY, my $buf, 256;
770 push @PUSARTRECV, unpack "C*", $buf;
771 }
772 }
773
774 # keyboard input
775 if ($KBD) {
776 while (select my $rin = "\x01", undef, undef, 0) {
777 sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF
778 or last;
779 }
780
781 stdin_parse if length $STDIN_BUF;
782 }
783 }
784
785 # kick off various interrupts
786
787 $RST |= 2 if @PUSARTRECV && $XON;# vt100, also works on vt102, probably by accident
788 #$INTPEND |= 2 if @PUSARTRECV && $XON;# real vt102 probably does it this way
789
790 unless ($CLK & 0x3ff) {
791 $RST |= 4; # vertical retrace
792 }
793
794 # handle video hardware
795
796 unless ($CLK & 0x1fff) {
797 prscr;
798 }
799 } 761 }
800} 762}
801 763
802__DATA__ 764__DATA__
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