HP 85 stuff

From: Eric Smith <eric_at_brouhaha.com>
Date: Fri Jul 7 18:11:54 2000

Jim Battle <frustum_at_pacbell.net> wrote:
[ ... about the HP custom 8-bit microprocessor of the HP-85 ... ]

> I believe that the HP 75 uses this same processor,

A CMOS version. I'm not sure if it's pin compatible. They probably
added at least one instruction, and also probably integrated some additional

> as of course the
> HP 86 and HP 87 do too.

The HP 83 most likely uses exactly the same processor, as the system is
fully compatible with the HP-85.

The HP-86 and -87 use different memory management, but the processor
might be the same.
Received on Fri Jul 07 2000 - 18:11:54 BST