23 Jul
2010
23 Jul
'10
7:17 p.m.
On 7/22/2010 12:49 PM, Tony Duell wrote:
Serial, yes, but
async, no. It had a CLK and DATA line, plus an ATN line.
Many people say it's just a serial version of the IEEE protcol, and I
guess you could call it that, but it's somewhat inconsistent, in my
opinion. It has a dedicated ATN line, but many of the other signal
lines are "emulated" by various sequences of CLK/DATA transitions.
Jim
On 21 July
2010 00:28, John Foust<jfoust at threedee.com> wrote:
No, but it most certainly was a bit-serial interface. At 11:16 AM 7/20/2010, Liam Proven wrote:
Um, that wasn't any relative of RS422, RS423, RS232 or anything akin
All fair points, but then, who ever used serial
ports to connect mass
storage? (I know there was a serial port hard disk for the first ever
Mac, but that was from complete lack of any alternative.)
I can think of the Commodore 64- 1541 drive