Le 20/07/2011 00:35, Michael Black a �crit :
The Z8601 have integrated UART (http://html.alldatasheet.net/html-pdf/157290/ZILOG/Z8601/148/1/Z8601.html), but have also enough power and IO pins maybe to control an SCSI 1 bus. Also, it seem the Apple ///+ used DB25 for floppy drives (http://en.wikipedia.org/wiki/Disk_II)On Tue, 19 Jul 2011, Bill W. wrote:I spent a little time at lunch puzzling over the circuit. I'll have to do more research to get very far, but I did note that the big chips here are a Z8 processor (Z8601), a static RAM, and an EPROM. Seems like a lot of firepower for a floppy controller, so maybe this is something else. Doesn't the Profile circuitry use a Z8?I can't remember, but it definitely had some sort of CPU in there. Michael
...mystery...