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r5166 Tuesday 7th July, 2009 at 02:25:23 UTC by Jonathan Gevaryahu
[VT100] Major update:
added VT131 (all roms marked bad pending rom redumps) [PJustice]
Documented many (but not all, yet) of the VT100 based systems DEC released;
Added drivers for systems which shared the vt100 roms (vt103, vt105, vt125)
Added drivers for the vt100 word processor and stb board variants (roms needed!)
Added optional load of the alternate character set rom for foreign vt100 systems (rom needed!)
Added a lot of documentation about the mask roms and the missing AVO character set roms
Marked the current character set rom as bad; it probably is actually good but since it was generated from the service manual diagrams and not actually dumped off a chip, we should get a proper dump eventually.
[src/mess/drivers]vt100.c

src/mess/drivers/vt100.c
r5165r5166
44
55        29/04/2009 Preliminary driver.
66
7        TODO: support for the on-AVO character set roms
8        TODO: support for the on-cpu board alternate character set rom
9
710****************************************************************************/
811
912
r5165r5166
344347   MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
345348MACHINE_DRIVER_END
346349
350/* VT1xx models:
351 * VT100 - 1978 base model. the 'later' rom is from 1979 or 1980.
352 *    The vt100 had a whole series of -XX models branching off of it; the
353       ones I know of are described here, as well as anything special about
354      them:
355 *    VT100-AA - standard model with 120vac cable \__voltage can be switched
356 *    VT100-AB - standard model with 240vac cable /  inside any VT100 unit
357 *    VT100-W* - word processor series:
358 *     VT100-WA/WB - has AVO board preinstalled, WP romset?, English
359        WP keyboard, no alt charset rom, 23-069E2 AVO rom.
360       (The WA and WB variants are called the '-02' variant on the schematics)
361 *     VT100-WC/WD - has AVO board preinstalled, WP romset?, French Canadian
362        WP keyboard, has 23-094E2 alt charset rom, 23-093E2 AVO rom.
363 *     VT100-WE/WF - has AVO board preinstalled, WP romset?, French
364        WP keyboard, has 23-094E2 alt charset rom, 23-093E2 AVO rom.
365 *     VT100-WG/WH - has AVO board preinstalled, WP romset?, Dutch
366        WP keyboard, has 23-094E2 alt charset rom, 23-093E2 AVO rom.
367 *     VT100-WJ/WK - has AVO board preinstalled, WP romset?, German
368        WP keyboard, has 23-094E2 alt charset rom, 23-093E2 AVO rom.
369 *     (The WC thru WK variants are called the '-03' variant on the schematics)
370       The WP romset supports english, french, dutch and german languages but
371        will only display text properly in the non-english languages if the
372        23-094E2 alt charset rom AND the foreign language 23-093E2
373        AVO rom are populated.
374 *    VT100 with vt1xx-ac kit - adds serial printer interface (SPI)
375       pcb, replaces roms with the 095e2/096e2/139e2/140e2 SPI set
376 * VT101 - 1981 cost reduced unexpandable vt100; Is the same as a stock
377   unexpanded vt100. It has no AVO nor the upgrade connector for it, and no
378   video input port.) Has its own firmware.
379 * VT102 - 1981 cost reduced unexpandable vt100 with built in AVO and SPI
380   Is the same as a stock vt100 with the AVO and SPI expansions installed,
381   but all on one pcb. Does NOT support the AVO extended character roms, nor
382   the word processing rom set. Has its own firmware.
383 * VT103 - 1980 base model vt100 with an integrated TU58 tape drive, and an
384   LSI-11 backplane, which an LSI-11 cpu card is used in, hence the computer
385   is effectively a tiny lsi-11 (pdp-11) built in a vt100 case. uses same roms
386   as vt100 for the vt100 portion, and tu58 has its own cpu and rom. It can
387   have the normal vt100 romset variant, and also can have the multiple word
388   processing variations (which use the same roms as the vt100 ones do).
389 * VT104 doesn't exist.
390 * VT105 - 1979 vt100 with the WG waveform generator board installed
391   (for simple chart-type line-compare-made raster graphics using some built
392   in functions), AVO optional; was intended for use on the MINC analog data
393   acquisition computer.
394 * vt125 - 1982? base model (stock vt100 firmware plus extra gfx board
395   firmware and processor) vt100 with the ReGIS graphical language board
396   installed (very advanced full framebuffer raster graphics, with color,
397   text rotation and scaling, etc. , has backwards compatibility mode for
398   vt105), AVO optional
399 * vt131 - 1982 cost reduced version of vt132, no longer has the vt100
400   expansion backplane; has the AVO advanced video board built in, as well
401   as the parallel port interface board, and supports serial block mode.
402 * vt132 - 1980? base vt100 with AVO, SPI, and its own 23-099e2/23-100e2
403   AVO character rom set. Has its own base firmware roms which support block
404   serial mode.
405 * vt180 - 1980 vt10x (w/vt100 expansion backplane) with a z80 daughterboard
406   installed
407 * vk100 'gigi'- graphical terminal similar to the vt125, but somewhat more
408   primitive; very little info so far, more research needed
409 
410 * Info about mask roms and other nasties:
411 * A normal 2716 rom has pin 18: /CE; pin 20: /OE; pin 21: VPP (acts as CE2)
412 * The vt100 23-031e2/23-061e2, 23-032e2, 23-033e2, and 23-034e2 mask roms
413   have the follwing enables:
414       23-031e2/23-061e2: pin 18:  CS2; pin 20:  CS1; pin 21:  CS3
415       23-032e2:          pin 18: /CS2; pin 20:  CS1; pin 21:  CS3
416       23-033e2:          pin 18:  CS2; pin 20:  CS1; pin 21: /CS3
417       23-034e2:          pin 18: /CS2; pin 20:  CS1; pin 21: /CS3
418       (This is cute because it technically means the roms can be put in the
419       4 sockets in ANY ORDER and will still work properly since the cs2 and
420       cs3 pins make them self-decode and activate at their proper address)
421       (This same cute trick is almost certainly also done with the
422       23-180e2, 181e2, 182e2 183e2 romset, as well as the
423       23-095e2,096e2,139e2,140e2 set and probably others as well)
424 * The vt100/103 23-018e2-00 character set rom at location e4 is a 24 pin 2316 mask rom with enables as such: pin 18: CS2; pin 20: /CS1; pin 21: /CS3
425 * The optional 23-094e2-00 alternate character set rom at location e9 is a 24 pin 2316 mask rom with enables as such: pin 18: /CS2; pin 20: /CS1; pin 21: /CS3
426 *     Supposedly the 23-094e2 rom is meant for vt100-WC or -WF systems, (which are french canadian and french respectively), implying that it has european language specific accented characters on it. It is probably used in all the -W* systems.
427 *     Pin 21 can be jumpered to +5v for this socket at location e9 by removing jumper w4 and inserting jumper w5, allowing a normal 2716 eprom to be used.
428 * The optional AVO character set roms (see below) have: pin 18: /CS2*; pin 20: /CS1; pin 21: CS3 hence they match a normal 2716
429 * *(this is marked on the image as if it was CS2 but the input is tied to gnd meaning it must be /CS2)
430 *
431 * The AVO itself can hold up to four character set roms on it (see http://www.bitsavers.org/pdf/dec/terminal/vt100/MP00633_VT100_Mar80.pdf )
432 * at least four of these AVO roms were made, and are used as such:
433 * No roms - normal vt100 system with AVO installed
434 * 23-069E2 (location e21) - meant for vt100-wa and -wb 'word processing' systems (the mapping of the rom for this system is different than for the ones below)
435 * 23-099E2 (location e21) and 23-100E2 (location e17) - meant for vt132
436 * 23-093E2 (location e21) - meant for vt100 wc thru wk 'foreign language' word processing systems
437 */
438
347439/* ROM definition */
348ROM_START( vt100 )
440ROM_START( vt100 ) // This is from the schematics at http://www.bitsavers.org/pdf/dec/terminal/vt100/MP00633_VT100_Mar80.pdf
441// This is the standard VT100 cpu board with the 'normal' roms (but later rev of eprom 0) populated
442// This romset is also used for the vt103, vt105, vt125, and ?vt132?
349443   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
350   ROM_LOAD( "23-061e2-00.e40", 0x0000, 0x0800, CRC(3dae97ff) SHA1(e3437850c33565751b86af6c2fe270a491246d15)) // version 2
351   ROM_LOAD( "23-032e2-00.e45", 0x0800, 0x0800, CRC(3d86db99) SHA1(cdd8bdecdc643442f6e7d2c83cf002baf8101867))
352   ROM_LOAD( "23-033e2-00.e52", 0x1000, 0x0800, CRC(384dac0a) SHA1(22aaf5ab5f9555a61ec43f91d4dea3029f613e64))
353   ROM_LOAD( "23-034e2-00.e56", 0x1800, 0x0800, CRC(4643184d) SHA1(27e6c19d9932bf13fdb70305ef4d806e90d60833))
444   //ROM_LOAD( "23-031e2-00.e56", 0x0000, 0x0800, NO_DUMP) // version 1 1978 'earlier rom', dump needed, correct for earlier vt100s
445   ROM_LOAD( "23-061e2-00.e56", 0x0000, 0x0800, CRC(3dae97ff) SHA1(e3437850c33565751b86af6c2fe270a491246d15)) // version 2 1979 or 1980 'later rom', correct for later vt100s
446   ROM_LOAD( "23-032e2-00.e52", 0x0800, 0x0800, CRC(3d86db99) SHA1(cdd8bdecdc643442f6e7d2c83cf002baf8101867))
447   ROM_LOAD( "23-033e2-00.e45", 0x1000, 0x0800, CRC(384dac0a) SHA1(22aaf5ab5f9555a61ec43f91d4dea3029f613e64))
448   ROM_LOAD( "23-034e2-00.e40", 0x1800, 0x0800, CRC(4643184d) SHA1(27e6c19d9932bf13fdb70305ef4d806e90d60833))
449   ROM_REGION(0x1000, "gfx1",0)
450   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
451   ROM_LOAD_OPTIONAL ("23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional ?word processing? alternate character set rom
452ROM_END
453
454ROM_START( vt100wp ) // This is from the schematics at http://www.bitsavers.org/pdf/dec/terminal/vt100/MP00633_VT100_Mar80.pdf
455// This is the standard vt100 cpu board, with the ?word processing? romset
456// the vt103 can also use this rom set (-04 and -05 revs have it by default, -05 rev also has the optional alt charset rom by default)
457// NOTE: according to dunnington's ROMList, this is actually the VT132 romset, but I'm not convinced.
458   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
459   ROM_LOAD( "23-180e2-00.e56", 0x0000, 0x0800, NO_DUMP)
460   ROM_LOAD( "23-181e2-00.e52", 0x0800, 0x0800, NO_DUMP)
461   ROM_LOAD( "23-182e2-00.e45", 0x1000, 0x0800, NO_DUMP)
462   ROM_LOAD( "23-183e2-00.e40", 0x1800, 0x0800, NO_DUMP)
463   ROM_REGION(0x1000, "gfx1",0)
464   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
465   ROM_LOAD_OPTIONAL ( "23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional ?word processing? alternate character set rom
466ROM_END
467
468ROM_START( vt100stp ) // This is from the VT180 technical manual at http://www.bitsavers.org/pdf/dec/terminal/vt180/EK-VT18X-TM-001_VT180_Technical_Man_Feb83.pdf
469// This is the standard vt100 cpu board, but with the rom set included with the VT1xx-AC kit 
470// which is only used when the STP 'parallel port expansion' card is installed into the terminal board.
471   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
472   ROM_LOAD( "23-095e2-00.e56", 0x0000, 0x0800, NO_DUMP)
473   ROM_LOAD( "23-096e2-00.e52", 0x0800, 0x0800, NO_DUMP)
474   ROM_LOAD( "23-139e2-00.e45", 0x1000, 0x0800, NO_DUMP) // revision 2?; revision 1 is 23-097e2
475   ROM_LOAD( "23-140e2-00.e40", 0x1800, 0x0800, NO_DUMP) // revision 2?; revision 1 is 23-098e2
476   ROM_REGION(0x1000, "gfx1",0)
477   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
478   ROM_LOAD_OPTIONAL ( "23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional ?word processing? alternate character set rom
479ROM_END
480
481/*
482ROM_START( vt101 ) // This is from the schematics at http://www.mainecoon.com/classiccmp/VT1XX-EB/
483// It is 8085 based instead of 8080; I don't know exactly what vtxxx model it is from, maybe the 101/102/131
484// It can be populated with two banks of two eproms each, each bank either contains 2k or 4k eproms depending on the w2/w3 and w4/w5 jumpers.
485// It also has two proms on the cpu board, which the original vt100 does not.
486   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
487   ROM_LOAD( "23-003e3-00.e10", 0x0000, 0x1000, NO_DUMP) // "EPROM 0" bank 0
488   ROM_LOAD( "23-004e3-00.e4", 0x1000, 0x1000, NO_DUMP) // "EPROM 1" bank 0
489   ROM_LOAD( "23-005e3-00.e9", 0x2000, 0x1000, NO_DUMP) // "EPROM 2" bank 1
490   ROM_LOAD( "23-006e3-00.e3", 0x3000, 0x1000, NO_DUMP) // "EPROM 3" bank 1
354491   ROM_REGION(0x0800, "gfx1",0)
355   ROM_LOAD ("23-018e2-00.e4", 0x0000, 0x0800, CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // needs redump
492   ROM_LOAD ("23-???e2-00.e34", 0x0000, 0x0800, NO_DUMP) // ? gfx rom
493   ROM_REGION(0x0400, "proms",0)
494   ROM_LOAD ("23-312a1-07.e26", 0x0000, 0x0200, NO_DUMP) // "PROM A"; handles 8085 i/o? mapping (usart, timer, dma, comm, etc)
495   ROM_LOAD ("23-313a1-07.e15", 0x0200, 0x0200, NO_DUMP) // "PROM B"; handles firmware rom mapping and memory size/page select; bit 0 = ram page, bits 1-3 unused, bits 4-7 select one eprom each
356496ROM_END
497*/
357498
499ROM_START( vt103 ) // This is from the schematics at http://www.bitsavers.org/pdf/dec/terminal/vt103/MP00731_VT103_Aug80.pdf
500// This is the standard VT100 cpu board with the 'normal' roms (but later rev of eprom 0) populated but with an
501// LSI-11 backplane (instead of a normal VT100 one, hence it cannot use the AVO, WG, or VT180 Z80 boards) and
502// DEC TU58 dual 256k tape drive integrated; It was intended that you would put an LSI-11 cpu card in there, which
503// Would talk to the terminal as its input/output device. Several LSI-11 cpu cards were available?
504   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
505   ROM_LOAD( "23-061e2-00.e56", 0x0000, 0x0800, CRC(3dae97ff) SHA1(e3437850c33565751b86af6c2fe270a491246d15)) // version 2 1980 'later rom'
506   ROM_LOAD( "23-032e2-00.e52", 0x0800, 0x0800, CRC(3d86db99) SHA1(cdd8bdecdc643442f6e7d2c83cf002baf8101867))
507   ROM_LOAD( "23-033e2-00.e45", 0x1000, 0x0800, CRC(384dac0a) SHA1(22aaf5ab5f9555a61ec43f91d4dea3029f613e64))
508   ROM_LOAD( "23-034e2-00.e40", 0x1800, 0x0800, CRC(4643184d) SHA1(27e6c19d9932bf13fdb70305ef4d806e90d60833))
509   ROM_REGION(0x1000, "gfx1",0)
510   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
511   ROM_LOAD_OPTIONAL ( "23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional (comes default with some models) alternate character set rom
512   ROM_REGION(0x0800, "tapecpu",0) // rom for the 8085 cpu in the integrated serial tu58-xa drive
513   ROM_LOAD ( "23-089e2-00.e1", 0x0000, 0x0800, NO_DUMP)
514   ROM_REGION(0x80000, "lsi11cpu",0) // rom for the LSI-11 cpu board
515   ROM_LOAD_OPTIONAL ( "unknown.bin", 0x00000, 0x80000, NO_DUMP)
516ROM_END
517
518ROM_START( vt105 ) // This is from anecdotal evidence and vt100.net, as the vt105 schematics are not scanned
519// This is the standard VT100 cpu board with the 'normal' roms (but later rev of eprom 0) populated but with a
520// WG waveform generator board factory installed; this makes the terminal act like a vt55 with vt100 terminal capability
521// The VT105 was intended for use on the MINC analog data acquisition computer
522   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
523   ROM_LOAD( "23-061e2-00.e56", 0x0000, 0x0800, CRC(3dae97ff) SHA1(e3437850c33565751b86af6c2fe270a491246d15)) // version 2 1980 'later rom'
524   ROM_LOAD( "23-032e2-00.e52", 0x0800, 0x0800, CRC(3d86db99) SHA1(cdd8bdecdc643442f6e7d2c83cf002baf8101867))
525   ROM_LOAD( "23-033e2-00.e45", 0x1000, 0x0800, CRC(384dac0a) SHA1(22aaf5ab5f9555a61ec43f91d4dea3029f613e64))
526   ROM_LOAD( "23-034e2-00.e40", 0x1800, 0x0800, CRC(4643184d) SHA1(27e6c19d9932bf13fdb70305ef4d806e90d60833))
527   ROM_REGION(0x1000, "gfx1",0)
528   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
529   ROM_LOAD_OPTIONAL ( "23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional (comes default with some models) alternate character set rom
530ROM_END
531
532ROM_START( vt125 ) // This is from bitsavers and vt100.net, as the vt125 schematics are not scanned
533// This is the standard VT100 cpu board with the 'normal' roms (but later rev of eprom 0) populated but with a
534// special ReGIS cpu+ram card installed which provides a framebuffer, text rotation, custom ram fonts, and many other features.
535// Comes with a custom STP card as well.
536// VT125 upgrade kit (upgrade from vt100 or vt105) was called vt1xx-cb or cl
537   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
538   ROM_LOAD( "23-061e2-00.e56", 0x0000, 0x0800, CRC(3dae97ff) SHA1(e3437850c33565751b86af6c2fe270a491246d15)) // version 2 1980 'later rom'
539   ROM_LOAD( "23-032e2-00.e52", 0x0800, 0x0800, CRC(3d86db99) SHA1(cdd8bdecdc643442f6e7d2c83cf002baf8101867))
540   ROM_LOAD( "23-033e2-00.e45", 0x1000, 0x0800, CRC(384dac0a) SHA1(22aaf5ab5f9555a61ec43f91d4dea3029f613e64))
541   ROM_LOAD( "23-034e2-00.e40", 0x1800, 0x0800, CRC(4643184d) SHA1(27e6c19d9932bf13fdb70305ef4d806e90d60833))
542   ROM_REGION(0x1000, "gfx1",0)
543   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
544   ROM_LOAD_OPTIONAL ( "23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional (comes default with some models) alternate character set rom
545ROM_END
546
547ROM_START( vt131 ) // VT101/VT102 'unupgradable/low cost' board with built in AVO and SPI, and vt132-style block serial mode
548   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
549   ROM_LOAD( "23-225e4-00.bin", 0x0000, 0x2000, BAD_DUMP CRC(7ddf75cb) SHA1(a3530bb562b5c6ea8ba23f0988b35ef404abcb93)) // A11 stuck high
550   ROM_LOAD( "23-226e4-00.bin", 0x2000, 0x2000, BAD_DUMP CRC(339d4e4e) SHA1(f1b08f2c6bbc2b234f3f43bd800a2615f6dd18d3)) // A11 stuck high
551   ROM_REGION(0x0800, "gfx1",0)
552   ROM_LOAD ("23-280e2-00.bin", 0x0000, 0x0800, BAD_DUMP CRC(71b4172e) SHA1(5a82c7dc313bb92b9829eb8350840e072825a797)) // called "VT131 ROM" in the vt101 quick reference guide; CS floating/stuck low (contents are almost total garbage)
553// This board may have proms on it as well
554ROM_END
555
556/*
557ROM_START( vt132 ) // This is from anecdotal evidence and vt100.net, as the vt132 schematics are not scanned
558// VT100 board with ? roms, AVO, SPI, custom firmware with block serial mode; dunnington insists these roms
559// should be the 23-180e2/181e2/182e2/183e2 set, but I'm not convinced.
560   ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
561   ROM_LOAD( "23-???e2-00.e56", 0x0000, 0x0800, NO_DUMP)
562   ROM_LOAD( "23-???e2-00.e52", 0x0800, 0x0800, NO_DUMP)
563   ROM_LOAD( "23-???e2-00.e45", 0x1000, 0x0800, NO_DUMP)
564   ROM_LOAD( "23-???e2-00.e40", 0x1800, 0x0800, NO_DUMP)
565   ROM_REGION(0x1000, "gfx1",0)
566   ROM_LOAD ( "23-018e2-00.e4", 0x0000, 0x0800, BAD_DUMP CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) // probably correct but needs redump
567   ROM_LOAD_OPTIONAL ( "23-094e2-00.e9", 0x0800, 0x0800, NO_DUMP) // optional (comes default with some models) alternate character set rom
568ROM_END
569*/
570
358571/* Driver */
359572
360573/*    YEAR  NAME    PARENT  COMPAT   MACHINE    INPUT    INIT    CONFIG COMPANY   FULLNAME       FLAGS */
361COMP( 1979, vt100,  0,       0,    vt100,       vt100,     0,       0,      "DEC",   "VT100",      GAME_NOT_WORKING)
574COMP( 1978, vt100,  0,       0,    vt100,       vt100,     0,       0,      "DEC",   "VT100",      GAME_NOT_WORKING)
575COMP( 1978, vt100wp,  vt100,       0,    vt100,       vt100,     0,       0,      "DEC",   "VT100-Wx",      GAME_NOT_WORKING)
576COMP( 1978, vt100stp,  vt100,       0,    vt100,       vt100,     0,       0,      "DEC",   "VT100 w/VT1xx-ac STP",      GAME_NOT_WORKING)
577//COMP( 1980, vt101,  0,       0,    vt100,       vt100,     0,       0,      "DEC",   "VT101",      GAME_NOT_WORKING)
578//COMP( 1980, vt102,  0,       0,    vt100,       vt100,     0,       0,      "DEC",   "VT102",      GAME_NOT_WORKING)
579COMP( 1981, vt103,  vt100,   0,    vt100,       vt100,     0,       0,      "DEC",   "VT103",      GAME_NOT_WORKING)
580COMP( 1979, vt105,  vt100,   0,    vt100,       vt100,     0,       0,      "DEC",   "VT105",      GAME_NOT_WORKING)
581COMP( 1981, vt125,  vt100,   0,    vt100,       vt100,     0,       0,      "DEC",   "VT125",      GAME_NOT_WORKING)
582COMP( 1981, vt131,  0,   0,    vt100,       vt100,     0,       0,      "DEC",   "VT131",      GAME_NOT_WORKING)
583//COMP( 1981, vt132,  vt100,   0,    vt100,       vt100,     0,       0,      "DEC",   "VT125",      GAME_NOT_WORKING)
584//COMP( 1981, vt180,  vt100,   0,    vt100,       vt100,     0,       0,      "DEC",   "VT180",      GAME_NOT_WORKING)

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