[vcf-midatlantic] ram card identification?
billdegnan at gmail.com
Mon Nov 7 13:36:23 EST 2016
on this particular AST SixPakPlus rev k board I have here on my desk,
RS232: 2,4,6 closed and irq 3&7 closed. Tp1 and TP2 open, TP3 open. S1 -
23458 on (up).
came from a working system, fully populated. 6 rows of 4264's.
On Mon, Nov 7, 2016 at 1:30 PM, william degnan <billdegnan at gmail.com> wrote:
> On Mon, Nov 7, 2016 at 1:20 PM, Neil Cherry via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>> On 11/07/2016 12:07 PM, Steven Michelsen via vcf-midatlantic wrote:
>>> Hmmmm..... six switches.... could that equal 6 banks of 64k? I hate to
>>> guess at this.
>> Highly unlikely, the AST reference page seems to ring a bell.
>> I see that minuszerodegrees has a page on AST cards with plenty of options
>>> for switches, but which one might represent mine?
>> Rough guess:
>> MEMORY INSTALLED ON 6-PAK
>> 6 dips sw. (note that sw7 is NA and that SW8 is parity which your board
>> doesn't have).
>> See how your current switches match up with the existing board. Assume
>> that it was working but that the memory board may not have the correct
>> initial addressing. I do recall you said it worked when the case was
>> open. This gives us starting point to intelligently guess.
>> Oddly enough I only owned 1 PC clone that ran DOS. My work machines
>> were Windows (or OS9 & Flex). None were the type of PC clone that would
>> need this board. Although I built dozens of the clones. Those usually
>> the memory on board (3x256KB or 4x256KB). The one DOS machine I had was
>> a Packard Bell and was a bad clone.
> Which model is this? A six pak?
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