21 Mar
1999
21 Mar
'99
8:46 p.m.
<What does the "LTC" switch do on an H11A ?
It kills the LTC interrupt (BEVENT-L).
Which is more common? (H11 or H11A) Can an H11 be "upgraded" to an H11A?
The upgrade is possible and trivial. the cpu board, backplane and all
are unaffected. The common failing on H11s is the power supply was not
all that reliable. I'd try to find a H780 and shoehorn it in.
I still use a serial card from one as a serial replacement for the parallel
LAV11. fair design, second rate board compared to DEC version.
Allison