EMS ROM doesn't work on HP-85A (note for PRM-85 owners)

[John AS (UK)]

Hi,

Just to pass on the information that the Series 80 Extended Mass Storage ROM only works with the HP-86/87 (ROM 00087-15013) and with the HP-85B/9915B (ROM 00085-15013), but not with the HP-85A (which is more common). The EMS ROM allows owners to use SS-80 protocol drives as well as Amigo, so making it easier to find a comptabile disk drive.

Apologies as I have had some misleading information on my '1980s vintage computing' web page about the EMS ROM for a few years, stating the EMS was for any Series 80 machine, I'll correct this later this week.

Regards,

John