HP 9845 replacement ROM boards

Tony Duell ard at p850ug1.demon.co.uk
Mon Sep 13 16:02:03 CDT 2010

> Tony,
> The rom board replaces the system rom's not the rom modules from the
> drawers.

Oh, right...

> It's a small pcb that will be placed as a piggyback on the PPU board.

Dn't you mean on the ROM/RAM board? And I assume you'd need 2 boards (PPU 
ROMs and LPU ROMs) for a complete machine.

Actually, I doubt I'd be interested at the momnet. My ROMs are 
fortunately OK for the time being. And to be honest, wiring up a 
kludgeboard on stripboard isnt' that hard.


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