Strange third party board in PDP-11/45
useddec at gmail.com
Sun Jul 22 01:41:22 CDT 2018
well, I was close..... they all sound alike with brain fog. I still have a
bunch of it, some marked ACT, some ABLE.
On Sun, Jul 22, 2018 at 1:36 AM, Paul Birkel via cctalk <
cctalk at classiccmp.org> wrote:
> ACT is parked on the upper-right under the handle.
> Several variants of "10003" are marked near the left handle.
> And it's copyrighted 1976.
> ACT = ABLE Computer Technology.
> Their first product was PN 10001 (copyright 1976), the A.C.T. Univerter;
> see "Able_Univerter_Nov81.pdf" on Bitsavers.
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bob
> Smith via cctalk
> Sent: Saturday, July 21, 2018 4:44 PM
> To: Mattis Lind; General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Strange third party board in PDP-11/45
> any identification number sn front or back? can tell from just that shot.
> On Sat, Jul 21, 2018 at 2:37 PM, Mattis Lind via cctalk
> <cctalk at classiccmp.org> wrote:
> > This board was sitting in slot 21 of the backplane in a 11/45
> > https://i.imgur.com/ZYWZQCo.jpg
> > What kind of board is this?
> > It has 26 bipolar RAMS. Fairchild 93415 1kbit SRAM.
> > The manufacturer might be ACT whatever that is.
> > My guess is that it is some kind of cache board? It is connected to both
> > unibuses in the machine.
> > Better ideas? Documentation?
> > /Mattis
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