9 Dec
2011
9 Dec
'11
9:20 a.m.
HI Devin,
In the meantime I've found out whats going on there, I've put that CPU on
a testboard and applied power and clock.
Nevertheless your links are very interesting, still have many threads to
read on those sites.
Thanks,
Holm
Devin Monnens wrote:
Holm,
I asked one of my colleagues who is working on computer research in
Ukraine. He did not have a direct answer to your question, but provided
these sources to check for solutions to your problems:
http://forum.maxiol.com/index.php?showtopic=4599 - look here
http://ramlamyammambam.livejournal.com/149983.html?format=light - ask
here or maybe here:
http://ru-radio-electr.livejournal.com/229706.html?thread=3609418&forma…
- I know user suvorow_ as a good specialist.
-Devin Monnens
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
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------------------------------
Message: 14
Date: Sat, 3 Dec 2011 16:44:24 +0100
From: Holm Tiffe <holm at freibergnet.de>
To: cctech at classiccmp.org
Subject: russian PDP-11 like K1801BM2 CPU Startup reading w/o address?
Message-ID: <20111203154424.GA56131 at pegasus.freiberg-net.de>
Content-Type: text/plain; charset=iso-8859-1
I want to play with a russian K1801BM2 CPU (K1801VM2).
My russian from the school is very very rusty and so I have problems to
understand what's going on with this CPU while startup.
There is some "besadresnoe tschtanie", a read from the bus w/o
sending out an address before w/o active SYNC.
It is right, that this read is building the upper 8 bits from the start
address in the rom area with Systemu Mode (Halt Mode) = 1?
Can anyone please confirm this?
BTW: how is this external register to be done in HW?
Does anyone know if there are schematics of SBCs existing w/o special
support ICs like The K1801VP1-55 or so?
Kind Regards and thanks in advance,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
--
Devin Monnens
www.deserthat.com
The sleep of Reason produces monsters.