>>>>> "BZ" == Bo Zimmerman <firstname.lastname@example.org> writes: BZ> I'm curious about a couple of things: whats the 6522 for? Controlling the drive mechanism and communicating with the other CPU, IIRC. BZ> Why does a single drive need two 6502s, and why the daughterboard? All the old IEEE drives used two system boards, one DOS board and one controller board. The IEC drives control the mechanism with an IRQ instead (or was it IEC communication?) and consequently have a much simpler design. -- ___ . . . . . + . . o _|___|_ + . + . + . . Per Olofsson, konstnär o-o . . . o + MagerValp@cling.gu.se - + + . http://www.cling.gu.se/~cl3polof/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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