2015-07-02 7:31 GMT+02:00 tony duell <ard at p850ug1.demon.co.uk>:
Not all minis came from the States :-)
That's right. There were one odd swedish mini as well.
Datasaab manufactured a line of minis called D5 in the early seventies. The
D5/10, D5/20 and D5/30. 16 bits.
They were used among others in banks for controlling terminals.
The D5/20 apparently had 64 by 24 bit microcode, used serial arithmetic and
the memory cycle was 1.33 us
http://www.datasaab.se/Aktuellt/IT_ceum/D520_FUB.pdf (in Swedish)
http://www.datasaab.se/Bildarkiv/D530/d530_eng.htm
http://www.datasaab.se/Bildarkiv/NTP/ntp_eng.htm
One of my favourite non-mainstream families is the Philips P800 series.
It's
a 16 bit machine with 16 registers (0 is the program counter and 15
is the stack pointer, rest are mostly general purpose) and separate
I/O instructions (not memory-mapped I/O). There were several models
with various implementations of the architecture, including
P850 (TTL, hardwired not microcoded)
P855, P852, P856, P857, P860 (TTL, microcoded)
P851 (Custom bitslice ICs, microcoded)
P854 (AM2900 bitslice, microcoded)
P853 I think (Single chip)
No, I don't have all of those...
-tony