< > for a intersil 6100 (12 bit pdp-8) based
system.
<
< Any schematics? ;-)
Yep!
Do tell.
Memory mapped IO on the 1802 was trivial to do and
could be used to good
advantage (1861 used it for the display).
That wasn't memory mapping. The 1861 DMA'ed the video data out.
< Coincidentally, I purchased a PDP-8/L at 16 for
the princely sum of $35
Had an 8e years ago and gave it away, looking for another.
I saw one at the Computer Museum of America, but I don't think it is
available.
< Still, the latch required +5.0VDC, the only part
with a tight power
< requirement.
The latch was not fussy about power, the led portion was power hog.
Well... they _were_ nice and bright. Ah, the countless hours I spent
staring at those ember-bright dots, counting toggle pulses in my head
to fix a one-byte bug.
Ob1802Trivia - don't execute the one "missing" instruction, 0x68. ISTR
that the CPU went berserk and whomped memory randomly.