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Accessing the CD system without the system card

 
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nodtveidt
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Joined: 27 Dec 2004
Posts: 414
Location: Isla del Encanto
PostPosted: Mon Jan 24, 2011 7:32 am    Post subject: Accessing the CD system without the system card Reply with quote
This was part of the plan for the Street Fighter II' project but it was scrapped. I want to know how to access the CDROM system hardware without using a system card; aka how to control the CDROM hardware on a hucard. Any leads? Or perhaps a system card disassembly?
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David Shadoff
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Joined: 10 May 2002
Posts: 83
Location: Toronto, Ontario, Canada
PostPosted: Tue Jan 25, 2011 4:04 am    Post subject: Reply with quote
Your best bet is to disassemble the system card to understand the sequence of operations, and reconcile the hardware accesses against what an open-source emulator like Mednafen does when it encounters those hardware accesses.

You would do well to try to understand (or at least obtain a reference for) the original SCSI specification, because I understand the handshaking is based on that.
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