More Bringing up a CPM

From: Richard Erlacher <edick_at_idcomm.com>
Date: Tue Jun 1 19:53:26 1999

Well, the DRAM circuit may work with one and not the other.

I remember going through this process once with DRAMs in a ZENITH PC/AT
clone. Their boards worked but my employer's didn't. I had to find a fix .
. .

Dick

-----Original Message-----
From: Dwight Elvey <elvey_at_hal.com>
To: Discussion re-collecting of classic computers
<classiccmp_at_u.washington.edu>
Date: Tuesday, June 01, 1999 6:27 PM
Subject: Re[2]: More Bringing up a CPM


>allisonp_at_world.std.com (Allison J Parent) wrote:
>>
>> See if the controller set is generating Mwrite/?
>
> I'll need to look. It normally works with the front
>panel on the IMSAI. I just don't recall whether it
>used mwrite\ or pwr\.
>
>>
>> So, failures are to be expected and ones they've run a while you will
have
>> cooked out the soft parts.
>
> I hate that when it happens. I'd sure love to put in tried
>and true boards.
>
>>
>> Why would that be a problem if it has regulators? Assumeing of course
they
>> arent fried.
>
> They might be fried and the other boards weren't sensitive
>enough to it. All regulators do is control the terminator
>voltage. I may be that even fried, other boards get enough
>swing but not the DRAM boards. I suspect that it is more
>likely a design issue though.
>Dwight
>
Received on Tue Jun 01 1999 - 19:53:26 BST