Workable stepstag driver:
-Added fundamental communication between main 68000 and (undumped) Windows PC
-Figured out correct logic of data uploading from main CPU to (maybe an FPGA on some unknown board)
-Discovered proper V-blank frequency of 4 logigal screens(routed to 3 physical screens in real hardware), which effects the communication and synchronization between 2 68000 CPUs, thus affect booting
-Borrowed foreground graphics from vjdash, added proper foreground layer handling, and removed hack code
-Seperated palette and decoding of 3 screens, and added independent 3rd screen decoding/drawing routine, as each screen has their own palette, and may display totally non-related graphics
-Corrected sprite rom loading of step3
-Mapped dancing floor light, spot light, neon light, and key led output, based on some video footage of real arcade machines
-Corrected NVRAM handling
-Adjusted key-mapping of foot step input port, avoided key conflict
-The in-game palettes are in 8-BIT YUV(UYUY) format. Each entry may contains 2 pixels. In the real game hardware, the sprites are to be mixed with a MPEG-1 under-layer, then converted together to RGB
Driver for the recently dumped Vjdash (a 4-monitor game):
-Figured out that vjdash uses similar hardware to Stepping Stage
-Identified graphics roms of fg/bg/rotation layers
-Been able to boot to self-test, thus mapped inputs
-In addition to the currently obtained board, this game also needs a 2nd 68000 board which drives 3 upper screens, and one Windows PC, like in Stepping Stage series.
-This board may have 2 more (missing?) ROM ICs, for sprites
This allows for the much more natural "import another map and patch
it" structure, or "cover a whole region then punch holes in it". Our
previous first-entry-wins rule was always a surprise to newcomers, and
oldcomers too.
- P.R.E.S. Advanced Plus 3/4
- Advanced Quarter Meg Ram
- Cumana Floppy Disk System
- Sound Expansion
- Sound Expansion v3
- Stop Press 64
- Solidisk EFS
New working software list additions
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electron_cart: Solidisk EFS 2.1E
New NOT_WORKING software list additions
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electron_cart: Stop Press 64
Software list items promoted to working
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electron_cart: Advanced Plus 3, Advanced Quarter Meg RAM, Slogger Electron Disk System, Sound Expansion v3
(nw) This is for you, Kale. I cleaned up a few things, but the driver
is still a complete mess, and the x1twin is a complete abomination. The
work RAM could probably be converted to memory banks as well with a bit
of effort.
