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Massive Space Invaders related comment update, documenting various sets, and the various Taito PCBs used by Space Invaders/Tabletop SI/Tabletop SI Color/Tabletop SI II/etc. [Andrew Welburn, Lord Nightmare]

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Jonathan Gevaryahu 2010-06-07 13:03:00 +00:00
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src/mame/drivers/8080bw.c
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@ -20,6 +20,99 @@
/* -lrescue */
/* -invasion */
/* */
/* - The Taito Space invaders hardware comes on at least five board types;
The Taito manufactured ones are:
* The "L-shaped" PCB set, Upright, B&W only
* Three pcbs in a stack, often called the '3 layer pcb set' (most common)
* Two pcbs in a stack, with the function of two of the three pcb stack
pcbs combined.
* In general, discounting revision specific differences, the pcbs are
arranged in a stack, connected end-to-end by ribbon cables and folded
such that the middle pcb (of 3 pcb stack) or the bottom pcb (of 2 pcb
stack) is upside down.
* Keep in mind specific differences on the pcbs (especially the TVN pcbs
vs the others) sometimes prevent exchanging 'equivalent' pcbs between stacks.
* L-shaped pcb set details:
* One large, square board with ROM, RAM, CPU, Video circuitry on it.
* One smaller pcb with audio/io/shifter circuitry on it, plugged into
the main pcb at a right angle (hence the entire pcb set is 'L-shaped')
* Does not have the capability of any sort of electronic color overlay.
* 3 layer pcb set details:
* This pcb set came in 3 versions: TVN, CVN, PVN; see below for differences.
* Top pcb: Audio/IO/Shifter pcb
- discrete audio and sn76477, and volume knobs
- data shifter, using either ~11 74xx chips, AM25S10s, Fujitsu MB14221
or Fujitsu MB14241 chips, which all do the same thing.
- has the dipswitches
- has the main "G" edge connector for the wiring harness
- has the gating circuitry for the color overlay
(these are not present and/or populated on some TVN pcbs)
- despite there being at least six versions of this pcb, the discrete
audio section is identical in all of them.
* Middle pcb: CPU/RAM/Color overlay pcb
- has SRAMS on it
- has the 8080 CPU on it
- has the two PROMS for color overlay on it (one for each player flip)
(these are not populated on TVN pcbs and the related circuitry is not
present and/or populated on some TVN pcbs)
* Bottom pcb: Power/Video/ROM pcb
- has the game roms on it
- has the main B&W video generation logic on it
- has the larger connection to the PSU, and B&W composite output "T" connector
* 2 layer pcb set details:
* This pcb set came in one version: PVN, and is entirely exchangable
with the 3 layer PVN pcb set.
* Top pcb is same as 3 layer pcb set
* Bottom pcb combines the function of the Middle and Bottom pcbs
of the 3 layer set.
* The different pcb set versions are noted by a different version code on
a paper sticker on the pcb; The code will be of the format mVNnnnnn where
m is a letter and nnnnn is a number.
Codes:
* unknown (L shaped pcb) - B&W only, used on "Space Invaders" Upright
with 3-strip overlay.
Came from factory with one of the TV romsets ONLY.
Capable of running TV, SV or CV romsets.
* TVNxxxxx (3 layer pcb) - B&W only, used on "T.T Space Invaders"
cocktail with blended single-sheet color gel overlay.
TODO: this overlay is not supported in MAME yet.
Several revisions (at least 5 rom, 3 cpu, 3 audio) of each pcb exist
for this set.
Came from factory with one of the SV or TV romsets.
Capable of running TV, SV or CV romsets.
* CVNxxxxx (3 layer pcb) - Color, used on "T.T Space Invaders Color"
cocktail with electronic overlay.
Came from factory with one of the CV romsets.
Capable of running TV, SV or CV romsets.
* PVNxxxxx (2&3 layer pcb) - Color, used on "T.T Space Invaders Part
II" cocktail with electronic overlay.
Several revisions (at least 3 rom, 1 cpu, 2 audio) of each pcb exist
for this set.
Came from factory with UV (2708) or PV (2716) romsets.
Capable of running TV, SV, CV, UV or PV romsets.
* The following Romsets are known:
TV0H, TV02, TV03, TV04 (w/test mode) - sitv
TV01, TV02, TV03, TV04 (w/o test mode) - undumped, tv01 has crc32 of 9F37B146
SV0H, SV11, SV12, SV04, SV13, SV14 - undumped? roms called sv0h exist in mame...
SV01, SV11, SV12, SV04, SV13, SV14 - sisv2
SV01, SV02, SV10, SV04, SV09, SV06 - sisv
CV03, CV04, CV05, CV06 w/proms - undumped (but apparently the same as sisv with the roms combined to 2716 size)
CV17, CV18, CV19, CV20 w/proms- sicv
UV1, UV2, UV3, UV4, UV5, UV6, UV7, UV8, UV9, UV10 w/proms - undumped (probably same as pvxx set just split differently)
PV01, PV02, PV03, PV04, PV05 w/proms - invadpt2
- Midway PCB sets: (cursory descripton)
* Midway Space Invaders Deluxe (and Deluxe Cocktail) use a special midway-made PCB set
which is significantly different from the taito ones.
* Midway Space Invaders II (only produced as a cocktail) is also significantly different hardware from the Taito SI hardware, but additionally has different (head to head) gameplya, as well has having two sound boards instead of one.
TODO: this needs to be emulated properly
* Both midway space invaders games' sound is different from the taito ones (particularly the shot sound) due to using slightly different components on the discrete section.
TODO: this needs to be emulated properly
- Taito-USA-made 'trimline' PCBS do not match the taito pcbs either.
*/
/* To Do: */
/* ----- */
/* */