21 Jan
2009
21 Jan
'09
10:57 p.m.
2009/1/21 Gordon JC Pearce MM3YEQ <gordonjcp at gjcp.net>:
There chips are not rare. In Russia you can buy it for about ~2$.
Seems, they are rare on the e-bay only. :)
The K1801VM1 was original Soviet design without direct Western analog.
The command set was PDP-11 implementing 64 basic commands.
The bus was Q-bus -like that simplified system design.
If you can read Russian, visit:
http://ru.wikipedia.org/wiki/1801BMx
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-=AV=-