HP Integral PC Manuals

[Tony Duell]

> 
> The roms on my integral are HP-UX V1.0 and uses both pcb's for HP-UX I 
> suppose they used smaller roms in the first version or HP-UX V1.0 takes more 
> place.

Is it the same PCB? haev V5.0 in my Integrals, and the daugherboard 
connectors are 2 row things (I think 2 rows of 10 pins each), a plug at 
one end of the PC, a socket at the other, so that the daughterboard can 
only fit one way round. But I am sure I've een a picutre of an Itengral 
ROM module PCB on one of the websites which appears to have SIL 
connectors for the daughterboard.

As regards using smaller ROMs, the ROM select decoding is, IIRC, on the 
Logic A PCB, with 4 chip select lines being fed to the ROM module. [Each 
line enales 2 ROMs, the high and low bytes of the 16 bit word]. Anyway, 
if you used smaller ROMs, unless you changed things on the Logic A PCB, 
the ROM would not be a contiguous block, whihc would seem to be a Bad Thing.

-tony