at&t unix pc

Mark Davidson mdavidson1963 at
Mon Oct 11 23:54:47 CDT 2010

On Mon, Oct 11, 2010 at 9:08 PM, Dave McGuire <mcguire at> wrote:
> On 10/11/10 11:59 PM, Mark Davidson wrote:
>> On Mon, Oct 11, 2010 at 8:26 PM, Dave McGuire<mcguire at>
>>  wrote:
>>> On 10/11/10 10:48 PM, Mark Davidson wrote:
>>>> Ok, I pulled out my 'black binder'.  It's a copy of the AT&T Unix PC
>>>> Reference Manual, and is for technicians doing component-level
>>>> troubleshooting of the AT&T Unix PC logic board.  It's pretty thick
>>>> and contains sections on:
>>>> * System Features and Functions
>>>> * Logic Board Theory of Operation
>>>> * Diagnostics
>>>> * Logic Board Test Procedures
>>>> * Schematics
>>>> * PAL Equations
>>>> * Mnemonics
>>>> * Expansion Memory Locations
>>>> As I said, it's pretty thick... has this been preserved in digital
>>>> form somewhere?
>>>  Not that I'm aware of.  Oh, how I'd love to have a PDF of that!  I saw
>>> that
>>> manual ~22 years ago but didn't have access to a beefy photocopier.
>> Ok, I'm open to suggestions.  I have a scanner and can produce PDFs,
>> but it would be a lot of pages.  It would also take me some time,
>> which is fine.  Honestly, I've gotten so much out of this list and the
>> discussions that, if I can give something back, that would make me
>> happy.  What's the procedure for doing this?  Do I just give the PDFs
>> I produce to bitsavers?
>  I for one would thank you wholeheartedly.
>  I believe Al has specific guidelines for scan settings, resolution, etc for
> his PDFs.  It might be a good idea to find out what those are before doing
> any work.

If Al could send me the guidelines, I'll happily see what I can do.


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