2014.04.16 Model2新进展！ "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. ______________________________________________________________________________ 来源：http://mamedev.emulab.it/kale/?p=2078 -- ポーラステーション http://perryt0517.wordpress.com/ --

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