Re: Design flaw in the SCSI spec?

2020-01-08 Thread Eric Smith via cctalk
On Wed, Jan 8, 2020 at 4:57 PM Bill Gunshannon via cctalk < cctalk@classiccmp.org> wrote: > And then you have DEC. I have often heard DSSI described as > SCSI done right That's reportedly what DEC thought of it, but in practice it was SCSI done differently so as to be incompatible. The only

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Eric Smith via cctalk
On Wed, Jan 8, 2020 at 4:44 PM jim stephens via cctalk < cctalk@classiccmp.org> wrote: > The electronics of the SCSI interface were designed initially by the > precursor to Adaptec. At the time that the SCSI committee was formed, > there was work by a number of companies. Among them were HP,

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Bill Gunshannon via cctalk
On 1/8/20 6:44 PM, jim stephens via cctalk wrote: > > > On 1/8/2020 9:54 AM, Liam Proven via cctalk wrote: >> With his express permission, I'm forwarding a mail from a public list. >> I am interested in Gene's comments about the design of SCSI, but I >> don't know enough electronics to judge. >>

Re: Design flaw in the SCSI spec?

2020-01-08 Thread jim stephens via cctalk
On 1/8/2020 9:54 AM, Liam Proven via cctalk wrote: With his express permission, I'm forwarding a mail from a public list. I am interested in Gene's comments about the design of SCSI, but I don't know enough electronics to judge. I thought others here might. I have trimmed the mail a little

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Richard Pope via cctalk
Al, Yep!! GOD Bless and Thanks, rich! On 1/8/2020 1:15 PM, Al Kossow via cctalk wrote: On 1/8/20 10:58 AM, Richard Pope via cctalk wrote: The A3000 did have a problem with the hardware. If you upgraded the SCSI controller chip it fixed the A3000 problem. I guessed it was a WD

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Antonio Carlini via cctalk
On 08/01/2020 18:56, Pete Turnbull via cctalk wrote: I recall the Christmas when our accountant insisted on an inventory of the electronics repair workshop.  We kept our small components in a bank of drawers some 1.5m (around 5 feet) wide by about 1m (3 feet or so) high.  Each drawer is just

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Al Kossow via cctalk
On 1/8/20 10:58 AM, Richard Pope via cctalk wrote: > The A3000 did have > a problem with the hardware. If you upgraded the SCSI controller chip it > fixed the A3000 problem. I guessed it was a WD http://eab.abime.net/showthread.php?t=73936 yup.. Amigas weren't the only systems that had

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Pete Turnbull via cctalk
On 08/01/2020 18:06, Paul Koning via cctalk wrote: Allowing accountants to do electrical engineering makes just as much sense as allowing sociologists to do brain surgery. Off topic, but allowing accountants to do accountancy isn't always much better. I recall the Christmas when our

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Richard Pope via cctalk
Hello all, I used Amigas for several decades and I really liked SCSI. The problems with the Amiga and SCSI were related to firmware and not the hardware. It was important to use the latest SCSI Roms on the 2091 and the 590. The A3000 did have a problem with the hardware. If you upgraded

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Eric Smith via cctalk
On Wed, Jan 8, 2020 at 10:55 AM Liam Proven via cctalk < cctalk@classiccmp.org> wrote: > With his express permission, I'm forwarding a mail from a public list. > I am interested in Gene's comments about the design of SCSI, but I > don't know enough electronics to judge. > > And all that

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Chuck Guzis via cctalk
On 1/8/20 10:32 AM, Peter Corlett via cctalk wrote: > On Wed, Jan 08, 2020 at 10:17:29AM -0800, Chuck Guzis via cctalk wrote: >> Before I go delving into my pile of SCSI X3T10 documentation and interface >> chip datasheets, exactly *which* flavor of SCSI are we talking about here? > > Given the

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Peter Corlett via cctalk
On Wed, Jan 08, 2020 at 10:17:29AM -0800, Chuck Guzis via cctalk wrote: > Before I go delving into my pile of SCSI X3T10 documentation and interface > chip datasheets, exactly *which* flavor of SCSI are we talking about here? Given the reference to the Amiga, almost certainly SCSI-1, i.e. 8 bit

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Chuck Guzis via cctalk
Before I go delving into my pile of SCSI X3T10 documentation and interface chip datasheets, exactly *which* flavor of SCSI are we talking about here? --Chuck

Re: Design flaw in the SCSI spec?

2020-01-08 Thread Paul Koning via cctalk
> On Jan 8, 2020, at 12:54 PM, Liam Proven via cctalk > wrote: > > With his express permission, I'm forwarding a mail from a public list. > I am interested in Gene's comments about the design of SCSI, but I > don't know enough electronics to judge. > > I thought others here might. > > I