Intel C1101A

[jim stephens]

On 12/3/2016 10:30 PM, dwight wrote:
> I'm not sure I know how to decode Intel's date codes.
>
> I was looking at some of the old parts I got from a friend that
>
> was proto types from the lab.
>
> I have a C8008-1 with F5000, a 31013 with 0587 and
>
> a 1101 with 776.
>
> I know the 31013 couldn't have been 1987 because
>
> neither he nor I were working for Intel by then.
>
> Dwight
I might have contact that can get hold of Intel folks and others. Also 
have some people who know the intel coding to some degree who were IC 
schlockers.  They may have forgotten it all though.

thanks
Jim

> ________________________________
> From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Brad H <vintagecomputer at bettercomputing.net>
> Sent: Saturday, December 3, 2016 12:51:35 PM
> To: 'General Discussion: On-Topic and Off-Topic Posts'
> Subject: Intel C1101A
>
> Putting this out there for those hopefully in the know.
>
>
>
> I have been acquiring date-correct ICs and parts for my Mark-8 project,
> which is years down the line.  I'm planning to build it on very carefully
> replicated clone boards, based off my originals.  For my purposes, I'm
> trying to keep ICs early 1975 or earlier.
>
>
>
> Most Mark-8s that I've seen have P1101a plastic encapsulated RAMs.  Most are
> Intel brand, but I've seen some that I think might be National or
> something.. they just say P1101A on top.
>
>
>
> The only source other than ebay that I have are those big chip vendors like
> Summit.  And the problem with them is they aren't always precise about date
> codes.  The P1101A, because they were produced for years, have a wide range
> of codes and the places I prospected them from couldn't guarantee 75 or
> prior.
>
>
>
> To my surprise, I found a few places had C1101A.  They are white ceramic,
> gold legs.  They have a 'batch code' of F1268.   I got 16 of them for $14
> each.  I was going to get 32, but Summit also surprised me with 5 1973
> vintage Signetics n8263s @ $25 each.  I hadn't been able to find any
> pre-1980 so I snatched those.. but that put me beyond a budget where I could
> buy 32.  I figured I'd buy 16 chips for now and then buy another 16 the next
> month.
>
>
>
> Now of course, the chip houses have turned tables on me.  They want $48 per
> chip instead of $14 like last time.  And checking around, that seems to be
> uniform.  Now, I'm not averse to paying that, though it will sting.  But I
> want to make sure my assumptions are correct.. that these white vintage ICs
> are in fact pre-76.  Can anyone confirm that?  The info out there is a
> little vague.
>
>
>
> And would it be totally out of place for C1101as to be on a Mark-8?  Could a
> hobbyist have had a source for them, beyond having some lying around?
>
>
>