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PDP-8 semiconductor memory

LCD question

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aek＠bitsavers.org

14 Aug 2006 14 Aug '06

11:21 p.m.

http://bitsavers.org/pdf/msc/MSC3102_PDP8semiMem.pdf

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vrs＠msn.com

15 Aug 15 Aug

4:09 a.m.

From: "Al Kossow" <aek at bitsavers.org>

http://bitsavers.org/pdf/msc/MSC3102_PDP8semiMem.pdf

That one is much clearer, though I cannot find the logic in it (if any) that inhibits reads when using the bootstrap cards. Thanks! Vince

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ethan.dicks＠gmail.com

4:48 a.m.

On 8/15/06, vrs <vrs at msn.com> wrote:

My recollection is that PDP-8 bootstraps emulate a front-panel. They aren't memory mapped, so you don't inhibit existing memory. -ethan

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vrs＠msn.com

5:22 a.m.

From: "Ethan Dicks" <ethan.dicks at gmail.com>

You are right, at least about the most common one. I don't know about the rope ROM and third party cards, but I guess I can probably ignore that, at least for now. Vince

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aek＠bitsavers.org
ethan.dicks＠gmail.com
vrs＠msn.com