[comp.sys.nsc.32k] some problems bringing the pc532 up.

dlr@daver.bungi.com (Dave Rand) (11/04/90)

[In the message entitled "some problems bringing the pc532 up." on Nov  4,  3:17, Eyal Lebedinsky writes:]
> The machine seems to work. The PI program was downloaded and run with no
> problems - but the disk wont respond.

You probably have the disk connected to the "Disk/Tape" SCSI port.
Surprise! It goes on the connector close to the expansion slots.
We haven't put in a driver for the 6250 yet.

> 
> Also, I dont recall seeing a monitor man, was there one?

With the built-in help, I've never seen a need for a manual for the
monitor...
> 
> The baud command does not affect the rate: I did 'baud 19200' which should
> have altered the consol speed but it did not.

Try baud d'19200. You are in hex radix mode by default...

> Last, J1 and J2 do not have pinput numbers in the layout (I assume 1-2-3 top
> to bottom) and no indication which jumper for 1M/4M (I assumed 2-3 for 1M,
> 1-2 for 4M).

The Theory of Operation manual covers this.

Karl's "How I got my PC532 going at 3am" posting convers most of the
common stuff, as well. It is in the archives, if you want me to dig
it up.


-- 
Dave Rand
{pyramid|mips|bct|vsi1}!daver!dlr	Internet: dlr@daver.bungi.com

eyal@echo.canberra.edu.au (Eyal Lebedinsky) (11/04/90)

Hello,

The machine seems to work. The PI program was downloaded and run with no
problems - but the disk wont respond.

The monitor is dated July 14, 1990.

I get scsi select timeouts. I traced the signals and found that there is no
activity on conn1. Then I found that the SELECT output of the ICU goes low
on first disk i/o and stays low forever. This seems to select /scsi1 at the
scsi pal, but the disk is on scsi0 (that's where it belong, correct?). The only
time I see SELECT high is after machine reset until first read/write.

The disk will just spin up, front led go green, a short burst of what sounds
like head movement, then the thing goes silent. The front led is dark with a
faint blink  (at say 3Hz) and an on-board bright green led flickeres madly (
the disk is a 9380S).

Also, I dont recall seeing a monitor man, was there one?

The baud command does not affect the rate: I did 'baud 19200' which should
have altered the consol speed but it did not.

What should 'scsi_adr' be set to? I hope the default '0' will work the native
disk (conn1). I tried 1 and 2 with no noticable change.

Last, J1 and J2 do not have pinput numbers in the layout (I assume 1-2-3 top
to bottom) and no indication which jumper for 1M/4M (I assumed 2-3 for 1M,
1-2 for 4M).

BTW, the scsi pal definition says 'select = 0 will select scsi 0' but it does
not seem to do this (unless 0 is high).




-- 
Regards
	Eyal

george@wombat.bungi.COM (George Scolaro) (11/05/90)

[In the message entitled "some problems bringing the pc532 up." on Nov  4,  3:17, Eyal Lebedinsky writes:]
> 
> Last, J1 and J2 do not have pinput numbers in the layout (I assume 1-2-3 top
> to bottom) and no indication which jumper for 1M/4M (I assumed 2-3 for 1M,
> 1-2 for 4M).

You got it right. 2-3 for J1/J2 for 1M, 1-2 for 4M. An ohm-meter would also
have allowed you to verify this.

> BTW, the scsi pal definition says 'select = 0 will select scsi 0' but it does
> not seem to do this (unless 0 is high).

Yes, this is an error in the comment part of the pal - it caught Bruce out
originally :-) and then I never got around to correcting it.

Regarding the manual, I did give a few people a copy of the original draft
for comment and hoped their feedback was enough. Unfortunately things that
are obvious to some aren't to others. I will add these corrections into it,
and at least the next set of boards that go out (we are waiting for the
CPU/FPU/ICU chipsets to be shipped to us) will have a bit more info with
them.

Since Bruce wrote the monitor we never planned to do a manual for it. Maybe
if someone out there feels it would be useful... (they could do it)

best regards,

-- 
George Scolaro
george@wombat.bungi.com                [37 20 51 N / 122 03 07 W]