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subsino2: update notes

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hap 2024-06-14 09:45:41 +02:00
parent 4ac2966806
commit 8f61827035
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src/mame/subsino/subsino2.cpp
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@ -32,6 +32,11 @@ Year Game CPU Sound Custom
** SS9689 6433044A22F
*** SP006 6433044A65F
All other large QFPs are gate arrays. Die labels below:
- SS9601: (M) NEC, 65650-302
- SS9802/SS9803: (C) (M) 1993 Goldstar, 8406, GVC10032
- SS9904: (C) (M) 1997?, LG SEMICON, GVS693Q5
Graphics for the H8-based games are stored in either four socketed DIP28 8-bit EPROMs, two socketed DIP40 16-bit EPROMs or one
surface-mounted SSOP70 32-bit ROM. Later H8-based PCBs have a custom QFP device labeled "SG 003" instead of the off-the-shelf
RAMDAC.
@ -44,7 +49,7 @@ TODO:
- xtrain: it runs faster than a video from the real thing. It doesn't use vblank irqs (but reads the vblank bit).
- mtrain: implement hopper.
- xplan: starts with 4 credits, no controls to move the aircraft
- which PCBs have the newer SP006 H8 instead of SS9689?
- which PCBs have the newer SP006 H8 instead of SS9689? is it the ones with a SG 003?
Protection seems to work the same way on every game in this driver, using a bitbanged Dallas 1-Wire EEPROM. First a Read ROM
command is issued, and only the first 8 bits returned are examined to determine whether they match the expected device code (0x14).