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1.1 |
#!/opt/bin/perl |
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1.2 |
# |
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# Copyright(C) 2014 Marc Alexander Lehmann <vt102@schmorp.de> |
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# |
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# vt102 is free software; you can redistribute it and/or modify it under |
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# the terms of the GNU General Public License as published by the Free |
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# Software Foundation; either version 3, or (at your option) any later |
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# version. |
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# |
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# vt102 is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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# for more details. |
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# |
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# If this file contains embedded ROMs, the above copyright notice does |
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# not apply to them. |
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1.1 |
# this hack is not considered release ready in and way, shape, or form |
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# ./vt102 bash |
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# ./vt102 telnet towel.blinkenlights.nl |
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# ./vt102 curl http://artscene.textfiles.com/vt100/trekvid.vt |
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# ./vt102 curl http://artscene.textfiles.com/vt100/surf.vt # in 3d! |
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1.7 |
# TODO: ctrl key map |
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1.3 |
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1.1 |
use common::sense; |
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$| = 1; |
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1.3 |
my $VT102 = 1; |
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1.1 |
my $AVO = $VT102 || 1; |
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my $KBD = 1; |
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############################################################################# |
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1.5 |
# rom initialising |
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1.1 |
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my $ROM = do { |
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binmode DATA; |
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local $/; |
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<DATA> |
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}; |
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0x6001 == length $ROM or die "corrupted rom image"; |
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binmode STDOUT; |
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my @M = (0xff) x 65536; # main memory, = (0xff) x 65536; |
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# populate mem with rom contents |
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if ($VT102) { |
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@M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x2000, 0x2000; |
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@M[0x8000 .. 0x9fff] = unpack "C*", substr $ROM, 0x4000, 0x2000; |
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} else { |
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@M[0x0000 .. 0x1fff] = unpack "C*", substr $ROM, 0x0000, 0x2000; |
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} |
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############################################################################# |
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1.5 |
# cpu registers and I/O support |
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1.1 |
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1.5 |
my $PTY; # the pty we allocated, if any |
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1.1 |
my $PRSTATUS = 0; |
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# 8080/8085 registers |
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# b, c, d, e, h, l, a |
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my ($A, $B, $C, $D, $E, $H, $L, $A); |
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my ($PC, $SP, $IFF, $FA, $FZ, $FS, $FP, $FC); |
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my $RST = 0; # 8080 pending interrupts |
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my $INTMASK = 7; # 8085 half interrupts |
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my $INTPEND = 0; # 8085 half interrupts |
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my $x; # dummy temp for instructions |
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my $CLK; # rather inexact clock |
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############################################################################# |
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1.5 |
# the dreaded nvr1400 chip. not needed to get it going, but provided for reference |
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1.1 |
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# nvram |
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my @NVR = (0x3fff) x 100; # vt102: 214e accum, 214f only lower 8 bit used, first 44 bytes |
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my $NVRADDR; |
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my $NVRDATA; |
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my $NVRLATCH; |
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my @NVRCMD = ( |
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1.5 |
sub { $NVRDATA = ($NVRDATA << 1) + $_[1]; }, # 0 accept data |
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sub { $NVRADDR = ($NVRADDR << 1) + $_[1]; }, # 1 accept addr |
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sub { ($NVRDATA <<= 1) & 0x4000 }, # 2 shift out |
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undef, # 3 not used, will barf |
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sub { $NVR[$_[0]] = $NVRDATA & 0x3fff; }, # 4 write |
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sub { $NVR[$_[0]] = 0x3fff; }, # 5 erase |
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sub { $NVRDATA = $NVR[$_[0]]; }, # 6 read |
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sub { }, # 7 standby |
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1.1 |
); |
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my @bitidx; |
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$bitidx[1 << $_] = 9 - $_ for 0..9; |
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# the nvr1400 state machine. what a monster |
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sub nvr() { |
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my $a1 = $bitidx[(~$NVRADDR ) & 0x3ff]; |
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my $a0 = $bitidx[(~$NVRADDR >> 10) & 0x3ff]; |
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# printf "NVR %02x A %020b %d %d D %02x\n", $NVRLATCH, $NVRADDR & 0xfffff, $a1, $a0, $NVRDATA; |
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$NVRCMD[($NVRLATCH >> 1) & 7]($a1 * 10 + $a0, $NVRLATCH & 1) |
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} |
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############################################################################# |
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1.6 |
my $DC11_REVERSE = 0; |
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1.1 |
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my $XON = 1; # false if terminal wants us to pause |
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my $PUSARTCMD; |
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my @KXMIT; # current scan queue |
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my %KXMIT; # currently pressed keys |
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my @KQUEUE; # key event queue |
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my $KXCNT; # count for debouncew |
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my @PUSARTRECV; |
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my $KSTATUS; |
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sub out_00 { # pusartdata |
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# handle xon/xoff, but also pass it through |
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if ($_[0] == 0x13) { |
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$XON = 0; |
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1.3 |
return;#d# |
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1.1 |
} elsif ($_[0] == 0x11) { |
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$XON = 1; |
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1.3 |
return;#d# |
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1.1 |
} |
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syswrite $PTY, chr $_[0]; |
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1.3 |
$INTPEND |= 1; |
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1.1 |
} |
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sub out_01 { |
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$PUSARTCMD = shift; |
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$INTPEND |= 1 if $PUSARTCMD & 0x01; # VT102, 5.5 txrdy |
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1.3 |
$INTPEND |= 2 if $PUSARTCMD & 0x04 && !@PUSARTRECV; # VT102, 6.5 rxrdy, needed for some reason |
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1.1 |
} |
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sub out_02 { } # baudrate generator |
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sub out_23 { } # unknown |
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sub out_27 { } # unknown |
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sub out_2f { } # unknown, connected to in 0f |
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sub out_42 { } # brightness |
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sub out_62 { |
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$NVRLATCH = shift; |
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} |
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1.6 |
sub out_a2 { |
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my $dc11 = 0x0f & shift; |
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$DC11_REVERSE = 1 if $dc11 == 0b1010; |
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$DC11_REVERSE = 0 if $dc11 == 0b1011; |
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} |
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1.1 |
sub out_c2 { } # unknown |
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1.6 |
sub out_d2 { } # 0..3 == 80c/132c/60hz/50hz |
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1.1 |
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sub out_82 { |
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# keyboard |
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# CLICK STARTSCAN ONLINE LOCKED | CTS DSR INSERT L1(?) |
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# CLICK STARTSCAN ONLINE LOCKED | LED1 LED2 LED3 LED4 |
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$KSTATUS = $_[0]; |
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# start new scan unless scan in progress |
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if (($_[0] & 0x40) && !@KXMIT) { |
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# do not reply with keys in locked mode |
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# or during post (0xff), |
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# mostly to skip init and not fail POST, |
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# and to send startup keys only when terminal is ready |
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unless (($_[0] & 0x10) || ($_[0] == 0xff) || ($VT102 && $INTMASK == 0x07)) { |
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if ($KXCNT <= 0 && @KQUEUE) { |
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my $c = shift @KQUEUE; |
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if ($c < 0) { # key up |
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delete $KXMIT{-$c}; |
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$KXCNT = 10; |
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} elsif ($c > 0) { # key down |
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undef $KXMIT{$c}; |
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$KXCNT = 10; |
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} else { # delay |
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$KXCNT = 100; |
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} |
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} |
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--$KXCNT; |
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@KXMIT = sort keys %KXMIT; |
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} |
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$RST |= 1; |
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} |
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} |
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############################################################################# |
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my $NVRBIT; |
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my $LBA; |
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sub in_00 { # pusart data |
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1.3 |
# interrupt not generated here, because infinite |
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# speed does not go well with the vt102. |
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1.1 |
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shift @PUSARTRECV |
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} |
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sub in_01 { # pusart status |
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# DSR SYNDET FE OE | PE TXEMPTY RXRDY TXRDY |
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0x85 + (@PUSARTRECV && 0x02) |
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} |
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sub in_22 { # modem buffer(?) |
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# wild guess: -CTS -SPDI -RI -CD 0 0 0 0 |
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0x20 |
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} |
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sub in_0f { } # unknown, connected to out 2f |
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sub in_42 { # flag buffer |
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++$LBA; |
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$NVRBIT = nvr ? 0x20 : 0x00 if ($LBA & 0x3) == 0x2; |
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# KBD_XMITEMPTY LBA7 NVRDATA ODDFIELD - OPTION !GFX !AVO PUSART_TXRDY |
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my $f = 0x85 | $NVRBIT; |
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$f |= 0x02 unless $AVO; |
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$f |= 0x40 if $LBA & 0x2; |
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$f |
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} |
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sub in_82 { # tbmt keyboard uart |
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return 0x7f unless @KXMIT; |
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$RST |= 1; |
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shift @KXMIT |
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} |
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sub in_03 { 0xff } # unknown, printer uart input? |
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sub in_0b { 0xff } # unknown |
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sub in_17 { 0xff } # unknown, printer status clear by reading? |
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sub in_1b { 0xff } # unknown |
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############################################################################# |
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root |
1.3 |
sub sf { # set flags (ZSC - AP not implemented) |
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root |
1.1 |
$FS = $_[0] & 0x080; |
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$FZ = ($_[0] & 0x0ff) == 0; |
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$FC = $_[0] & 0x100; |
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$_[0] & 0xff |
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} |
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266 |
root |
1.3 |
sub sf_nc { # set flags except carry |
267 |
root |
1.1 |
$FS = $_[0] & 0x080; |
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$FZ = ($_[0] & 0x0ff) == 0; |
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$_[0] & 0xff |
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} |
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my @op = map { sprintf "status(); die 'unknown op %02x'", $_ } 0 .. 255; |
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my @ops; |
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my @reg = qw($B $C $D $E $H $L $M[$H*256+$L] $A); |
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my @cc = ('if !$FZ', 'if $FZ', 'if !$FC', 'if $FC', ';die', ';die', 'if !$FS', 'if $FS'); # die == unimplemented $FP parity |
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# mov r,r / r,M / M,r |
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for my $s (0..7) { |
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for my $d (0..7) { |
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$op[0x40 + $d * 8 + $s] = "$reg[$d] = $reg[$s]"; |
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} |
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} |
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$op[0x00] = ''; |
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288 |
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$op[0x01] = '($B, $C) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
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$op[0x11] = '($D, $E) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
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$op[0x21] = '($H, $L) = (IMM16 >> 8, IMM16 & 0xff)'; # lxi |
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$op[0x31] = '$SP = IMM16' ; # lxi #d# 0xf000 because of limited stack |
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293 |
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$op[0x02] = '$M[$B * 256 + $C] = $A'; # stax |
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$op[0x12] = '$M[$D * 256 + $E] = $A'; # stax |
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$op[0x32] = '$M[IMM16 ] = $A'; # sta |
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297 |
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sub inxdcx($$$) { |
298 |
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$x = ($_[0] * 256 + $_[1] + $_[2]) & 0xffff; |
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$_[0] = $x >> 8; |
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$_[1] = $x & 0xff; |
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} |
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303 |
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$op[0x03] = 'inxdcx $B, $C, 1'; # inx |
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$op[0x13] = 'inxdcx $D, $E, 1'; # inx |
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$op[0x23] = 'inxdcx $H, $L, 1'; # inx |
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$op[0x33] = '$SP++' ; # inx |
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$op[0x0b] = 'inxdcx $B, $C, -1'; # dcx |
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$op[0x1b] = 'inxdcx $D, $E, -1'; # dcx |
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$op[0x2b] = 'inxdcx $H, $L, -1'; # dcx |
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$op[0x3b] = '--$SP' ; # dcx |
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312 |
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# "no carry" doesn't seem to be needed for vt100 - optimize? |
313 |
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$op[0x04 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] + 1" for 0..7; # inr |
314 |
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$op[0x05 + $_ * 8] = "$reg[$_] = sf_nc $reg[$_] - 1" for 0..7; # dcr |
315 |
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316 |
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# mvi r / M |
317 |
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$op[0x06 + $_ * 8] = "$reg[$_] = IMM8" for 0..7; |
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319 |
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# getting this insn wrong (its the only 16 bit insn to modify flags) |
320 |
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# wasted three of my best days with mindless vt102 rom reverse engineering |
321 |
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sub dad { |
322 |
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$x = $H * 256 + $L + $_[0]; |
323 |
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324 |
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($H, $L) = (($x >> 8) & 0xff, $x & 0xff); |
325 |
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$FC = $x > 0xffff; |
326 |
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} |
327 |
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328 |
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$op[0x09] = 'dad $B * 256 + $C'; # dad |
329 |
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$op[0x19] = 'dad $D * 256 + $E'; # dad |
330 |
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$op[0x29] = 'dad $H * 256 + $L'; # dad |
331 |
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$op[0x39] = 'dad $SP '; # dad |
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333 |
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$op[0x07] = ' $FC = $A >> 7; $A = ($A * 2 + $FC) & 0xff '; # rlc |
334 |
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$op[0x17] = ' ($FC, $A) = ($A >> 7, ($A * 2 + $FC) & 0xff)'; # ral |
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336 |
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$op[0x0f] = ' $FC = $A & 1; $A = ($A >> 1) | ($FC && 0x80) '; # rrc |
337 |
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$op[0x1f] = ' ($FC, $A) = ($A & 1, ($A >> 1) | ($FC && 0x80))'; # rar |
338 |
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339 |
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$op[0x0a] = '$A = $M[$B * 256 + $C]'; # ldax b |
340 |
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$op[0x1a] = '$A = $M[$D * 256 + $E]'; # ldax d |
341 |
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$op[0x3a] = '$A = $M[IMM16]'; # lda |
342 |
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343 |
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$op[0x20] = '$A = $INTPEND * 16 + $INTMASK + ($IFF && 8)'; # rim (incomplete) |
344 |
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$op[0x30] = '$INTMASK = $A & 7 if $A & 8'; # sim (incomplete) |
345 |
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346 |
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$op[0x22] = '($M[IMM16], $M[IMM16 + 1]) = ($L, $H)'; # shld |
347 |
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$op[0x2a] = '($L, $H) = ($M[IMM16], $M[IMM16 + 1])'; # lhld |
348 |
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349 |
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# yeah, the fucking setup screens actually use daa... |
350 |
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$op[0x27] = ' |
351 |
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|
my ($h, $l); |
352 |
|
|
|
353 |
|
|
($h, $l) = ($A >> 4, $A & 15); |
354 |
|
|
|
355 |
|
|
if ($l > 9 || $FA) { |
356 |
|
|
$A = sf $A + 6; |
357 |
|
|
($h, $l) = ($A >> 4, $A & 15); |
358 |
|
|
} |
359 |
|
|
|
360 |
|
|
if ($h > 9 || $FC) { |
361 |
|
|
$h += 6; |
362 |
|
|
$A = ($h * 16 + $l) & 0xff; |
363 |
|
|
} |
364 |
|
|
'; # daa, almost certainly borked, also, acarry not set by sf |
365 |
|
|
|
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 |
|
|
############################################################################# |
426 |
|
|
|
427 |
|
|
# print cpu status, for debugging |
428 |
|
|
sub status { |
429 |
|
|
my $PC = shift || $PC; |
430 |
|
|
|
431 |
|
|
printf "%04x/%04x A=%02x BC=%02x:%02x DE=%02x:%02x HL=%02x:%02x ZSCAP=%s: %02x %s\n", |
432 |
|
|
$PC, $SP, |
433 |
|
|
$A, $B, $C, $D, $E, $H, $L, |
434 |
|
|
($FZ ? "1" : "0") |
435 |
|
|
. ($FS ? "1" : "0") |
436 |
|
|
. ($FC ? "1" : "0") |
437 |
|
|
. ($FA ? "1" : "0") |
438 |
|
|
. ($FP ? "1" : "0"), |
439 |
|
|
$M[$PC], $ops[$M[$PC]]; |
440 |
|
|
} |
441 |
|
|
|
442 |
|
|
############################################################################# |
443 |
|
|
|
444 |
|
|
my @chr = ( |
445 |
root |
1.5 |
" " , "\x{29eb}", "\x{2592}", "\x{2409}", |
446 |
|
|
"\x{240c}", "\x{240d}", "\x{240a}", "\x{00b0}", |
447 |
|
|
"\x{00b1}", "\x{2424}", "\x{240b}", "\x{2518}", |
448 |
|
|
"\x{2510}", "\x{250c}", "\x{2514}", "\x{253c}", |
449 |
|
|
"\x{23ba}", "\x{23bb}", "\x{2500}", "\x{23bc}", |
450 |
|
|
"\x{23bd}", "\x{251c}", "\x{2524}", "\x{2534}", |
451 |
|
|
"\x{252c}", "\x{2502}", "\x{2264}", "\x{2265}", |
452 |
|
|
"\x{03c0}", "\x{2260}", "\x{00a3}", "\x{00b7}", |
453 |
root |
1.1 |
(map chr, 0x020 .. 0x7e), |
454 |
|
|
); |
455 |
|
|
|
456 |
|
|
utf8::encode $_ for @chr; |
457 |
|
|
|
458 |
root |
1.6 |
my @sgr; # sgr sequences for attributes |
459 |
|
|
|
460 |
|
|
for (0x00 .. 0xff) { |
461 |
|
|
my $sgr = ""; |
462 |
|
|
|
463 |
|
|
$sgr .= ";5" unless $_ & 0x01; |
464 |
|
|
$sgr .= ";4" unless $_ & 0x02; |
465 |
|
|
$sgr .= ";1" unless $_ & 0x04; |
466 |
|
|
$sgr .= ";7" if $_ & 0x80; |
467 |
|
|
|
468 |
|
|
$sgr[$_] = "\e[${sgr}m"; |
469 |
|
|
} |
470 |
|
|
|
471 |
root |
1.1 |
sub prscr { |
472 |
|
|
my $i = 0x2000; |
473 |
|
|
|
474 |
root |
1.6 |
my $scr = sprintf "\e[H--- KBD %08b CLK %d\e[K\n", $KSTATUS, $CLK; |
475 |
|
|
|
476 |
|
|
$scr .= "\e[?5" . ($DC11_REVERSE ? "h" : "l"); |
477 |
root |
1.5 |
|
478 |
root |
1.1 |
line: |
479 |
root |
1.6 |
for my $y (0 .. 25) { # ntsc, two vblank delay lines, up to 24 text lines |
480 |
|
|
my $prev_sgr; |
481 |
|
|
|
482 |
root |
1.1 |
$scr .= sprintf "%2d |", ++$y; |
483 |
|
|
|
484 |
root |
1.6 |
for (0..139) { |
485 |
|
|
my $c = $M[$i]; |
486 |
root |
1.1 |
|
487 |
|
|
if ($c == 0x7f) { # also 0xff, but the firmware avoids that |
488 |
root |
1.6 |
$scr .= "\e[m|\e[K\n"; |
489 |
root |
1.1 |
|
490 |
root |
1.6 |
my $a1 = $M[$i + 1]; |
491 |
|
|
my $a0 = $M[$i + 2]; |
492 |
root |
1.1 |
|
493 |
|
|
$i = 0x2000 + (($a1 * 256 + $a0) & 0xfff); |
494 |
|
|
|
495 |
|
|
next line; |
496 |
|
|
} |
497 |
|
|
|
498 |
root |
1.6 |
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 |
|
|
|
505 |
|
|
$scr .= $prev_sgr = $sgr if $sgr ne $prev_sgr; |
506 |
|
|
|
507 |
|
|
$scr .= $chr[$c & 0x7f]; |
508 |
root |
1.1 |
} |
509 |
|
|
|
510 |
root |
1.6 |
$scr .= "\e[K\nvideo overflow\e[K\n"; |
511 |
root |
1.1 |
last; |
512 |
|
|
} |
513 |
|
|
|
514 |
root |
1.6 |
$scr .= "\e[m"; |
515 |
|
|
|
516 |
root |
1.1 |
if (0) { |
517 |
root |
1.6 |
$scr .= "\e[K\n"; |
518 |
root |
1.1 |
for my $o (0x200 .. 0x232) { |
519 |
|
|
$scr .= sprintf "%04x:", $o * 16; |
520 |
|
|
for (0..15) { |
521 |
|
|
$scr .= sprintf " %02x", $M[$o * 16 + $_]; |
522 |
|
|
} |
523 |
root |
1.6 |
$scr .= "\e[K\n"; |
524 |
root |
1.1 |
} |
525 |
|
|
} |
526 |
|
|
|
527 |
root |
1.6 |
$scr .= "\e[J"; |
528 |
root |
1.1 |
|
529 |
|
|
syswrite STDOUT, $scr; |
530 |
|
|
} |
531 |
|
|
|
532 |
|
|
############################################################################# |
533 |
|
|
|
534 |
|
|
if (@ARGV) { |
535 |
|
|
require IO::Pty; |
536 |
|
|
$PTY = IO::Pty->new; |
537 |
|
|
|
538 |
|
|
my $slave = $PTY->slave; |
539 |
|
|
|
540 |
root |
1.3 |
$PTY->set_winsize (24, 80); |
541 |
|
|
|
542 |
root |
1.1 |
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 |
root |
1.3 |
system "stty ixoff erase ^H"; |
552 |
|
|
|
553 |
|
|
$PTY->make_slave_controlling_terminal; |
554 |
|
|
$PTY->close_slave; |
555 |
root |
1.1 |
|
556 |
|
|
exec @ARGV; |
557 |
|
|
} |
558 |
|
|
|
559 |
root |
1.3 |
$PTY->close_slave; |
560 |
|
|
|
561 |
root |
1.1 |
} 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 |
|
|
|
589 |
root |
1.7 |
# 0x080 shift, 0x100 ctrl |
590 |
root |
1.1 |
my %KEYMAP = ( |
591 |
|
|
"\t" => 0x3a, |
592 |
|
|
"\r" => 0x64, |
593 |
|
|
"\n" => 0x44, |
594 |
|
|
|
595 |
root |
1.7 |
"\x00" => 0x77 | 0x100, # CTRL-SPACE |
596 |
|
|
"\x1c" => 0x45 | 0x100, # CTRL-\ |
597 |
|
|
"\x1d" => 0x14 | 0x100, # CTRL-] |
598 |
|
|
"\x1e" => 0x24 | 0x100, # CTRL-~ |
599 |
|
|
"\x1f" => 0x75 | 0x100, # CTRL-? |
600 |
|
|
|
601 |
root |
1.1 |
# hardcoded rxvt keys |
602 |
|
|
"\e" => 0x2a, # ESC |
603 |
|
|
"\e[3~" => 0x03, # DC |
604 |
|
|
"\e[5~" => 0x7e, # CAPS LOCK (prior) |
605 |
|
|
"\e[6~" => 0x6a, # NO SCROLL (next) |
606 |
|
|
"\e[A" => 0x30, # UP |
607 |
|
|
"\e[B" => 0x22, # DOWN |
608 |
|
|
"\e[C" => 0x10, # RIGHT |
609 |
|
|
"\e[D" => 0x20, # LEFT |
610 |
|
|
"\e[a" => 0x30 | 0x080, # UP |
611 |
|
|
"\e[b" => 0x22 | 0x080, # DOWN |
612 |
|
|
"\e[c" => 0x10 | 0x080, # RIGHT |
613 |
|
|
"\e[d" => 0x20 | 0x080, # LEFT |
614 |
|
|
"\e[7~" => 0x7b, # SETUP (home) |
615 |
|
|
"\e[8~" => 0x23, # BREAK (end) |
616 |
|
|
"\e[8\$" => 0x23 | 0x080, # SHIFT BREAK / DISCONNECT (shift-end) |
617 |
|
|
"\x7f" => 0x33, # BACKSPACE |
618 |
|
|
|
619 |
|
|
"\e[11~" => 0x32, # F1 |
620 |
|
|
"\e[11~" => 0x42, # F2 |
621 |
|
|
"\e[11~" => 0x31, # F3 |
622 |
|
|
"\e[11~" => 0x41, # F4 |
623 |
|
|
); |
624 |
|
|
|
625 |
|
|
@KEYMAP{map chr, 0x20..0x40} = unpack "C*", pack "H*", |
626 |
|
|
"779ad5a9a8b8a755a6b5b6b466256575" . "351a3929283837273626d656e634e5f5" . "b9"; |
627 |
|
|
|
628 |
|
|
@KEYMAP{map chr, 0x5b .. 0x7e} = unpack "C*", pack "H*", |
629 |
|
|
"154514b7a5" . "244a6879591949485816574746766706" . "050a185a0817780969077a95c594a4"; |
630 |
|
|
|
631 |
root |
1.7 |
$KEYMAP{"\x1f" & $_} ||= $KEYMAP{$_} | 0x100 for "a" .. "z"; # ctrl |
632 |
root |
1.1 |
$KEYMAP{uc $_} ||= $KEYMAP{$_} | 0x080 for "a" .. "z"; # shift |
633 |
|
|
|
634 |
|
|
my $KEYMATCH = join "|", map quotemeta, reverse sort keys %KEYMAP; |
635 |
|
|
$KEYMATCH = qr{^($KEYMATCH)}s; |
636 |
|
|
|
637 |
|
|
sub key { |
638 |
|
|
my ($key) = @_; |
639 |
|
|
|
640 |
|
|
state %MOD; |
641 |
|
|
|
642 |
|
|
push @KQUEUE, -0x7c if !($key & 0x100) && delete $MOD{0x7c}; # ctrl-up |
643 |
|
|
push @KQUEUE, -0x7d if !($key & 0x080) && delete $MOD{0x7d}; # shift-up |
644 |
|
|
|
645 |
|
|
push @KQUEUE, 0x7c if $key & 0x100 && !$MOD{0x7c}++; # ctrl-down |
646 |
|
|
push @KQUEUE, 0x7d if $key & 0x080 && !$MOD{0x7d}++; # shift-down |
647 |
|
|
|
648 |
|
|
$key &= 0x7f; |
649 |
|
|
push @KQUEUE, $key, -$key; |
650 |
|
|
} |
651 |
|
|
|
652 |
|
|
my $STDIN_BUF; |
653 |
|
|
|
654 |
|
|
sub stdin_parse { |
655 |
|
|
key $KEYMAP{$1} |
656 |
|
|
while $STDIN_BUF =~ s/$KEYMATCH//; |
657 |
|
|
|
658 |
|
|
# skip input we can't decipher |
659 |
|
|
substr $STDIN_BUF, 0, 1, ""; |
660 |
|
|
} |
661 |
|
|
|
662 |
|
|
if ($KBD) { |
663 |
|
|
system "stty -icanon -icrnl -inlcr -echo min 1 time 0"; |
664 |
|
|
eval q{ sub END { system "stty sane" } }; |
665 |
|
|
$SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { exit 1 }; |
666 |
|
|
} |
667 |
|
|
|
668 |
|
|
############################################################################# |
669 |
|
|
|
670 |
|
|
my @ICACHE; # compiled instruction cache |
671 |
|
|
|
672 |
|
|
# the cpu |
673 |
|
|
while () { |
674 |
|
|
|
675 |
|
|
# execute extended basic blocks |
676 |
|
|
$PC = ($ICACHE[$PC] ||= do { |
677 |
|
|
my $pc = $PC; |
678 |
|
|
|
679 |
|
|
my $insn = ""; |
680 |
|
|
|
681 |
|
|
# the jit compiler |
682 |
|
|
for (0..15) { |
683 |
|
|
|
684 |
|
|
# optional tracing support |
685 |
|
|
if (0) { |
686 |
|
|
$insn .= qq< |
687 |
|
|
if (\$PRSTATUS) { |
688 |
|
|
status $pc; |
689 |
|
|
die unless --\$PRSTATUS; |
690 |
|
|
} |
691 |
|
|
>; |
692 |
|
|
} |
693 |
|
|
|
694 |
|
|
my $imm; |
695 |
|
|
my $op = $op[$M[$pc++]]; |
696 |
|
|
|
697 |
|
|
for ($op) { |
698 |
|
|
s/\bPUSH\b/\$M[--\$SP] =/g; # push byte to stack |
699 |
|
|
s/\bPOP\b/\$M[\$SP++]/g; # pop byte from stack |
700 |
|
|
|
701 |
|
|
s/\bIMM16\b/$imm \/\/= $M[$pc++] + $M[$pc++] * 256/xge; # 16 bit insn immediate |
702 |
|
|
s/\bIMM8\b /$imm \/\/= $M[$pc++] /xge; # 8 bit insn immediate |
703 |
|
|
|
704 |
|
|
s/\bPC\b/$pc/ge; # PC at end of insn |
705 |
|
|
s/\bBRA\b/return/g; # conditional jump |
706 |
|
|
s/\bJMP\b(.*)/$1\x00/sg; # unconditional jump |
707 |
|
|
|
708 |
|
|
s/\bIN\b/ sprintf "\$A = in_%02x", $M[$pc++]/xge; |
709 |
|
|
s/\bOUT\b/sprintf "out_%02x \$A ", $M[$pc++]/xge; |
710 |
|
|
} |
711 |
|
|
|
712 |
|
|
$insn .= "$op;\n"; |
713 |
|
|
} |
714 |
|
|
|
715 |
|
|
|
716 |
|
|
$insn .= "$pc"; |
717 |
|
|
$insn =~ s/\x00.*$//s; |
718 |
|
|
|
719 |
|
|
eval "use integer; sub { $insn }" or die "$insn: $@" |
720 |
|
|
})->(); |
721 |
|
|
|
722 |
|
|
++$CLK; |
723 |
|
|
|
724 |
|
|
# things we do from time too time only |
725 |
|
|
unless ($CLK & 0xf) { |
726 |
|
|
# do I/O |
727 |
|
|
|
728 |
|
|
unless ($CLK & 0x7ff) { |
729 |
|
|
|
730 |
|
|
# pty/serial I/O |
731 |
|
|
unless (@PUSARTRECV || @KQUEUE || !$PTY) { |
732 |
|
|
my $rin = ""; (vec $rin, fileno $PTY, 1) = 1; |
733 |
|
|
|
734 |
|
|
if (select $rin, undef, undef, 0) { |
735 |
|
|
sysread $PTY, my $buf, 256; |
736 |
|
|
push @PUSARTRECV, unpack "C*", $buf; |
737 |
|
|
} |
738 |
|
|
} |
739 |
|
|
|
740 |
|
|
# keyboard input |
741 |
|
|
if ($KBD) { |
742 |
|
|
while (select my $rin = "\x01", undef, undef, 0) { |
743 |
|
|
sysread STDIN, $STDIN_BUF, 1, length $STDIN_BUF |
744 |
|
|
or last; |
745 |
|
|
} |
746 |
|
|
|
747 |
|
|
stdin_parse if length $STDIN_BUF; |
748 |
|
|
} |
749 |
|
|
} |
750 |
|
|
|
751 |
|
|
# kick off various interrupts |
752 |
|
|
|
753 |
root |
1.3 |
$RST |= 2 if @PUSARTRECV && $XON; # VT100, but works on vt102, too (probably not used on real hardware though) |
754 |
|
|
#$INTPEND |= 2 if @PUSARTRECV && $XON; # VT102, 6.5 rxrdy |
755 |
root |
1.1 |
|
756 |
root |
1.3 |
# kick off vertical retrace form time to time |
757 |
root |
1.5 |
unless ($CLK & 0x1ff) { |
758 |
root |
1.1 |
$RST |= 4; # vertical retrace |
759 |
|
|
} |
760 |
|
|
|
761 |
|
|
# handle video hardware |
762 |
|
|
|
763 |
|
|
unless ($CLK & 0x1fff) { |
764 |
|
|
prscr; |
765 |
|
|
} |
766 |
|
|
} |
767 |
root |
1.4 |
|
768 |
|
|
# the interrupt logic |
769 |
|
|
$x = $INTPEND & ~$INTMASK; |
770 |
|
|
if (($RST || $x) && $IFF) { |
771 |
|
|
# rst 1 kbd data available |
772 |
|
|
# rst 2 pusart xmit+recv flag |
773 |
|
|
# rst 4 vertical retrace |
774 |
|
|
# 5.5 vt125 mb7 trans ready (serial send?) |
775 |
|
|
# 6.5 vt125 mb7 read ready (something modem?) |
776 |
|
|
# 7.5 vt125 mb7 vblank h(?) |
777 |
|
|
# trap vt125 mbi init h(?) |
778 |
|
|
my $vec; |
779 |
|
|
|
780 |
|
|
if ($x & 1) { $vec = 0x2c; $INTPEND &= ~1; |
781 |
|
|
} elsif ($x & 2) { $vec = 0x34; $INTPEND &= ~2; |
782 |
|
|
} elsif ($x & 4) { $vec = 0x3c; $INTPEND &= ~4; |
783 |
|
|
# } elsif ($RST ) { $vec = $RST * 8; $RST = 0; # for some reason, this breaks vt102 |
784 |
|
|
} elsif ($RST & 1) { $vec = 0x08; $RST &= ~1; # separate is better for vt102 |
785 |
|
|
} elsif ($RST & 2) { $vec = 0x10; $RST &= ~2; |
786 |
|
|
} elsif ($RST & 4) { $vec = 0x20; $RST &= ~4; |
787 |
|
|
} else { |
788 |
|
|
die; |
789 |
|
|
} |
790 |
|
|
|
791 |
|
|
$M[--$SP] = $PC >> 8; |
792 |
|
|
$M[--$SP] = $PC & 0xff; |
793 |
|
|
$PC = $vec; |
794 |
|
|
|
795 |
|
|
$IFF = 0; |
796 |
|
|
} |
797 |
root |
1.1 |
} |
798 |
|
|
|
799 |
|
|
__DATA__ |
800 |
|
|
1N ; 0 >b/BWog<Gӂ,O $
O [ xI <ӂ,Bt @`+6 +|v #~ʐ |¡ 0ڡ q~ʨ |¡ 0Ҩ ,ڥ # yOt ͤ[ zW>/2!b>> >ӂx ӂ:h zW͢uۂG|g$>%
!h w-!h >-4!j pO:{ y:! u:x!_yA[>y
>yA[>?y@
:x!yA[P>>O[>>[Î:!ʵyA>>OlyAPÇ!:!S!h ~ ~ >%: O͓: Ô!20!2!!!yAG~"&=w< w:!/!!A:!Ey2!~1N ! ~eBi<2!͢:P =2S!~6ʘ!!6 |
801 |
|
|
2!0* w4ʘ> 2! ~î!N ̓/2!! "R !"" |
802 |
|
|
! ͋! 0 Ãppppp!"-!>52,!>2[ 2v!!"I!>2s >2 B>2y >2!2!&l" >@:X!:!͔>2!b:!K>G:| !p ^!p" :!x:! u> |
803 |
|
|
Ӣ:[!Ӣ:!cww#:!>>{́kB͈͇!w!~6 :!ʮ2D!î :O:!:8>'y7:!y !!>D! NDy<wG: 'qx<o61,@ 7~G>G>w70)1!2@3#4$5%6^7&8*9(-_=+`~[{]};:/?'",<.>\| poytwq ][iure1 `-9743=08652 Ѱ |
804 |
|
|
\lkgfa ';jhds
.,nbx /m vczN> Ӣ:e !Q >>2e 6 >2[ :V!>2[ :U!=/2z [ |
805 |
|
|
!Z 'wWӢzӢz>2e |
806 |
|
|
:V!8:U!=2z !x ~O52F!!,!~=i65>Ӣ!!~jӢw>@2H!! 4:!B:X!:!b:!!{ uG:{ x©:y xک ڲ*@!! |
807 |
|
|
2>2y |
808 |
|
|
G>xbO͈ByFsO! V#zozz2 V: Gzy_ Oz@y$#$: O:B!A! :S!A6 U * q|gpx2 ! q! :S!hy2 :!@m462B!:!
! ~#n& V! ~<w+@0§~z:h _!A{2g W !n ~!j #6
#{>2r !G:r < 2r :!@{:P!!_#!s 56:r y!n ~C#8vyj !n ~[ |
809 |
|
|
f#}rQ |
810 |
|
|
lNG:g x2g 2P!{j,C_:D!A{WW{!v_ Ny1 xpy{aOx0!K~###NxyA[? {AAO:!2T!S:P!!n A#!n ~8#+A:P!w>2r !h Vw#r#w#L:!@>2G!{*j:d:0!W:1!_>= zħ;>>ܧ>b>ܧz >oz2 QW>>Wʞ _{ |
811 |
|
|
>!_ ^#V 8 A
U U U K <2 :!*{!|!r!>w!r!~w!{!F#\!~0 #
$ !x ~w! ~562 6K :! K ! V:V!s Ϳxr6:!ʘ ͎>2!4:! 2 =2 2} 2!! |
812 |
|
|
0ҽ !} O~ʻ q2~ ! |
813 |
|
|
:} :! !P |
814 |
|
|
! |
815 |
|
|
G:! x( 2)1#!{ |
816 |
|
|
!:~ O#
|
817 |
|
|
## |
818 |
|
|
~#fo!"@!A |
819 |
|
|
B |
820 |
|
|
C |
821 |
|
|
D |
822 |
|
|
F |
823 |
|
|
GH |
824 |
|
|
IJ |
825 |
|
|
K |
826 |
|
|
YZ=>1W<]`
c ER M1W[ |
827 |
|
|
H
DU 7h8q=>ZNFOF 345J67`
8
!"@!>H2~ ! "0!! |
828 |
|
|
:} ! |
829 |
|
|
:!!0!:K!_ |
830 |
|
|
~! |
831 |
|
|
G :!# |
832 |
|
|
DBCHSArfSxyd cqn
JAKlmhg
!"@!G ڲ!Q!.! "@!~B6x 2R!!"@!6 x PO2 Ϳ:R!]2 |
833 |
|
|
62!ͭPLPÉ>2!ͭL2U!Ϳx2V!y2P BH>ê! :U!G~ʸ! 56:!͎>2!5:!2 -!x!6!x!6 !!~ w:!&&Hl" " 2 &&l" !E!x#~wG7)w:~ G!J##~ȸ9#~! 44AHB01 2 !y ~ |
834 |
|
|
6! |
835 |
|
|
!! w! !͋6!xʗ 2 ! ~w>õ:!»>õ>! w>2 :0!!r!~w>Ϳ
:! 6+6/6?#>1
BG/Oxy0w#6:!x!r!2
~w>Ϳ
:!x)
0w#6~w>Ϳ
: G:!J
:U!Ox<z
ͻ
: <z
6B͎> |