[vcf-midatlantic] ram card identification?

[william degnan]

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?
>>> http://www.minuszerodegrees.net/manuals/AST/Cards/Many%20AST%20cards.txt
>>>
>>
>> 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?
>
> b
>
>