30 Nov
2011
30 Nov
'11
5:13 p.m.
On 30 Nov 2011 at 19:00, Jules Richardson wrote:
I think for starters you'll have problems
connecting a SASI device to
a SCSI HBA - I've not touched this for a few years, but isn't there an
extra phase in the SCSI protocol (not to mention a couple of signals)
that just isn't there for SASI? (because SASI was more of a
single-device protocol, whereas SCSI supported multiple devices on the
bus)
SASI is comparatively dumb compared to SCSI. You should be able to
rig up an interface with some random TTL if you have a system with a
simple bus (e.g. ISA), or at worst, a microcontroller such as the
Arduino.
My first hard disk on my 5150 was an SA1001 with a WD SASI-interfaced
controller. My PC interface card was less than a half-sized ISA
card.
I've got a full-length Ampex Megastore SASI interface card for the
ISA bus that equally sparse, but includes a 2732 EPROM BIOS
extension.
--Chuck