3 Jun
2000
3 Jun
'00
12:51 p.m.
I have dumps of the proms too... Still looking for them though.
clint
On Fri, 2 Jun 2000, Tony Duell wrote:
Ladies & Gents, now I -gotta- know: What were those 6 chips, and is there a
schematic somewhere?
I posted the list of chips (actually, all 8 chips on the disk interface
card) yesterday. There's a schematic in the back of the Apple ][ DOS
manual. But be warned that much of the cleverness is hidden inside 2
PROMs (one contains the disk bootstrap software, the other, together with
a latch, forms a state machine to decode the pulses off the disk). So a
schematic doesn't tell you that much.
-tony