1980s Vintage Computers
Hewlett-Packard Series 80 - HP-87
The HP-87 was the follow-on model to the HP-85 in the 'Series 80'. It was a logical development, keeping the same processor and clock speed, but with the following changes:
The HP-87 was followed by the HP-86 and HP-87XM. The HP-86 lost the internal monitor in favour of an external monitor, and lost the built in HP-IB connector in favour of a Centronics parallel printer port and two connectors for HP floppy disks. The HP-86 also had 64K RAM whilst the HP-87XM included 128K RAM. There is an excellent article on the HP-86 and HP-87XM architecture in the December 1982 edition of the HP Journal. The final machine in the series 80 family was the HP-86B, which went back to having a built-in HP-IB port and featured 128K of RAM.
I have an HP-87, together with the following ROMs:
I have EPROM versions of the following ROMs:
The EMS ROM allows the use of an HP 9122D dual 3.5" floppy drive, as this uses the SS-80 protocol rather than the earlier Amigo protocol.
I also have the following which can be used on either the HP-85 and HP-87:
For documentation I have the HP-87 owners manual, and the 'Introduction to the HP-86' which outlines some of the differences between the HP-85 and HP-86 & 87.
Olivier de Smet has produced an excellent HP-85 and HP-87emulator.
I would very much like to contact anyone with any software or program listings, so please e-mail me.
This page was last revised on: 12/04/09