Reading the announcement letter for the 77s, it was offered with a
double speed CD-ROM.
300KB/s.
Patriot has U1 40.0000 MHz osc.
Functions of Late Adapter Oscillators
20 MHz oscillator is for the SCSI-Line interface processor.
25 MHz drives the cache controller.
32 MHz clock for 80C186-16, which supplies the busmaster functions.
Well, the 18C50 has an 8KB buffer.
On 1/11/2022 10:40, Louis Ohland wrote:
My intrigue has been piqued. The historical lore is that the Patriot
does 3MB/s over the MCA bus.
No tech ref at hand.
Maybe... since the MCS-700 is PIO, this "3MB/s" comes from using it on a
386 class system. Maybe. The 18C50 is always referred to as "SCSI-2" and
you see references to 10MB/s...
I am kontuzed.
The Patriot hooked up a CD-ROM in a Lacuna. So let's mathicate [sordid
like medicate] and look at the quad-speed transfer rate [600KB/s?].
What Patriot-connected CD-ROM was offered in the 77s?
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)