30 Jul
2013
30 Jul
'13
8:45 a.m.
Paul Birkel wrote:
[..]
implemented in a scaled version of the F-11 process --
5u NMOS -- and
operated at 250Mhz (400ns microcycle). The T-11 dissipated less than 1.2W
and cost less than $10 in high volume."
Whow... whopping CPU Power, 250Mhz, but why such a long Cycle Time?
*grin*
I'm searching a while now for one that is interrested like me to build
something out of those:
Ebay 161043734581 64Kb No MMU but very fasti (10Mhz Clock), no FPU
Ebay 400529915063 22Bit (4MB) 5Mhz , FPU is very Rare (1801VM4)
Ebay 380635060287 same as above but CMOS.
all are much faster then a F11.. ther is an K1801VM1 which is the slowest
Version.
All chips are in metric raster (2.5mm, 1mm).
I do have some docs to them that I could translate from russian to english
or german if one is interested. It seems that there is a raisonable hughe
source of them in rossia..
Take a look at this:
http://www.taswegian.com/MOSCOWx/mk-90.html
It looks like some Casio Clone from the outside, but internally it is an
PDP11 !! The CPU is CMOS K1835 series if my memory is serving me right.
Regards,
Holm
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