On 10/12/12 1:12 AM, BLuRry wrote:
http://www.6502.org/users/andre/adv65/pet816/index.html This is a rather interesting accelerator project that puts a zip-style accelerator in the 6502 socket of a Commodore Pet. It has the appropriate ram and clock sync that you find in a Zip accelerator. There is also a fantastic writeup that explains the timing characteristics and phase sync behavior in there. So... what would prohibit this from working in an Apple ][? Platform-specific MMU behavior? Interactions with the card I/O? -Brendan
Another similar project for the Replica-1: http://jefftranter.blogspot.co.uk/2012/06/replica-1-now-running-with-65816-cpu.html