2014.04.16
Model2新進展！
"Stalling till infinity …"
Starting to work on Sega Model 2 HW, which definitely deserved some love
for the importance that this HW went in mid-90s. With some aid from from
Haze, providing snippets of information from ElSemi’s code here goes
some WIP snaps:
　　 http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0005.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0003.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0001.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0021.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0011.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0019.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0004.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/00041.png
http://mamedev.emulab.it/kale/wp-content/uploads/2014/04/0007.png
Of course it’s still a long way to go. And anyway, main problem lies in
FIFO comms: BOTH CPUs stalls at arbitrary points in several games (Virtua
Fighter 2, Fighting Vipers and so on), trying to read an empty FIFO
instead of alternating between reads and writes.
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來源：http://mamedev.emulab.it/kale/?p=2078