From: dave@horsfall.org (Dave Horsfall)
Subject: [TUHS] Unix on PDP8?
Date: Thu, 30 Nov 2017 13:37:03 +1100 (EST) [thread overview]
Message-ID: <alpine.BSF.2.21.1711301330310.67700@aneurin.horsfall.org> (raw)
In-Reply-To: <CAAFR5pY8ZfdDmpU9GcYmXc=QCR7TZccqtySJtSQ85o7pizsfiQ@mail.gmail.com>
On Wed, 29 Nov 2017, Robert Swierczek wrote:
> Maybe pdp7-unix could be ported/rewritten. I'm guessing the available
> memory would be the biggest issue.
Wasn't extended memory on the -8 bank-switched via the IOT instruction?
It reminds me of what we did with AUSAM back at UNSW; the current buffer
"b" (similar to "u") was mapped via KISA5 (?) into whatever was at 0150000
(?), so you could have as many buffers as you wanted, limited by physical
memory (I think).
--
Dave Horsfall DTM (VK2KFU) "Those who don't understand security will suffer."
prev parent reply other threads:[~2017-11-30 2:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-28 19:55 Will Senn
2017-11-28 20:24 ` Clem Cole
2017-11-28 23:26 ` Ron Natalie
2017-11-29 6:56 ` Lars Brinkhoff
2017-11-29 14:05 ` Clem Cole
2017-11-30 0:53 ` Robert Swierczek
2017-11-30 8:34 ` emanuel stiebler
2017-11-29 14:31 ` Ron Natalie
2017-11-29 22:11 ` Dave Horsfall
2017-11-29 22:28 ` Warren Toomey
2017-11-29 23:12 ` Dave Horsfall
2017-11-30 1:17 ` Robert Swierczek
2017-11-30 2:37 ` Dave Horsfall [this message]
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