On Mon, Jul 9, 2018 at 5:44 PM, Glen Slick wrote:
>
> (The earlier Feb 91 second edition version of the 12016-90001 manual
> on Bitsavers does include the DDL Diagnostic Program Chapter 7, which
> has the Table 7-2. Loopback Test Panel Configuration)
I mean to type that the Feb 91 second edition
On Mon, Jul 9, 2018 at 12:53 PM, Sven Schnelle via cctalk
wrote:
>
> I'm actually the one who asked Al about this test hood. It seems like
> it's a SCSI connector that connects the control lines to the data lines.
> I've added some code which emulates this in software and the ROM said
> 'test hood
Yea, it would have to be more than just a terminator as it would have to
reflect back some
of the control signals to the “ack” equivalents otherwise the controller would
just see a bus
with no devices on it. Presumably, the controller also has a “loopback” mode
so that all the
signals (includin
On 07/09/2018 12:33 PM, Al Kossow via cctalk wrote:
No, it is specifically mentioned in the HP test tools manual 09800-90001
page II-82.
Interesting.
Thank you for correcting me.
--
Grant. . . .
unix || die
On 07/09/2018 08:27 PM, Grant Taylor via cctalk wrote:
> On 07/09/2018 11:58 AM, Al Kossow via cctalk wrote:
>> Someone working on simulating the scsi DIO board in MAME asked me
>> about the scsi loopback test plug. Anyone ever seen one? Is it just
>> wires or are there active parts doing the loop
No, it is specifically mentioned in the HP test tools manual 09800-90001 page
II-82.
On 7/9/18 11:27 AM, Grant Taylor via cctalk wrote:
> I've never heard of loopback related to SCSI. I have seen many external
> terminators that someone may miss-identify as a
> loopback because it seems quite
On 07/09/2018 11:58 AM, Al Kossow via cctalk wrote:
Someone working on simulating the scsi DIO board in MAME asked me about
the scsi loopback test plug. Anyone ever seen one? Is it just wires or
are there active parts doing the loopback?
I've never heard of loopback related to SCSI. I have se
Someone working on simulating the scsi DIO board in MAME asked me about the
scsi loopback
test plug. Anyone ever seen one? Is it just wires or are there active parts
doing the loopback?
