Plotter ROM for the HP9810 - how to use it?

[Tony Duell]

Am I allowed to 'blow my own trumpet' here ?

There is a fair amount of information on the HP9810 on the Australian HP museum site (URL is as this site, but .net rather than .org).

There should be a manual for the plotter ROM. The HP9810 service manual is there, but be warned it's mostly a 'boardswapper guide', the only schematics are for the PSU. And if you can stick my writing, there's a full schematic.

HPCC published a set of articles on repairing these machines too.