6 Jun
2014
6 Jun
'14
9:44 p.m.
On Fri, Jun 6, 2014 at 3:53 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
Was there anythign abotu the early-ish Macs (up to the
Mac II series at
least) that was anything like stanard? The serial ports (both the
origianl D9s and the 8 pin mini-DIN were not any standard interface (they
were not RS422 ro RS423 as far as I can tell).
They were RS423.
I heard of there being
probkems using non-Apple SCSI deevices on the Mac+ (I
forget the details,
soem drives needed a firmware ROM swap or soemthing).
Aside from the non-standard connnector, it was fully compatible with SCSI
both electrically and in protocol. With the right cabling, the only reason
a non-Apple drive didn't "just work" is that the Apple formatter only
recognized Apple drives. It wasn't hard to find third-party formatter
software that would work with non-Apple drives.
Mac Nubus is not
stnadard Nubus (UI have read the specs for both). and
so on.
Really? What did Apple do differently? It was close enough that the TI
Nubus interface chips worked fine.