On Wed, Feb 15, 2017 at 1:57 AM, Noel Chiappa <[email protected]> wrote: > > From: Tony Duell > > > Having other hardware decode instructions that appear as NOPs to the > > main processor is not uncommon in HP machines. > > Ah, so you actually had some prior knowledge that helped in working out that > puzzle, that that's what's happening here! :-)
Nothing that isn't now available to anyone, like 'my' schematics of the 9825 memory boards, the HP41 machine code programming info (think of things like the printer controller IC), etc. -tony
