HP 86A/86B/87A/87XM ROM query

[John]

Hi,

Can someone clarify please which ROMs are built into which of the following machines?

86A

86B

87A - none (only one of these I have)

87XM

I recall (probably incorrectly!) that some of these have the EDISK ROM built in, not sure of any other ROMs.

Thanks,
John

[Etienne Victoria]

Hi John,

I can answer for mine!

Hp-86B: EDISK ROM, Mass storage ROM, Printer ROM

And that's all!!!

Cheers and thanks!

Etienne

[Vassilis Prevelakis]

Hp-87A and 87XM: Mass storage ROM, Printer ROM

IMHO the only difference between the 87A and the 87XM is that the
XM has more memory built in.

**vp

[John]

Hi,
Thanks for the responses. Can you clarify please about the HP86/87 Printer ROM? As you know, the 86/87 has a system ROM (address 0) plus an additional ROM (address 1) and I thought this incuded the Printer commands such as



PRINTER IS 10,132



As per your series 80 there is a separate plotter ROM (address 360 octal), but this is not pre-fitted to my HP-87A.



Regards,
John

[Etienne Victoria]

Hi John,

Sorry but my answer to your post was not accurate enough.

IMHO there is no separate, identified product tagged "Printer Rom" for the 86/87 series.

Printer commands are indeed included in the 86/87 mainframe and by "PRINTER ROM", I was just referring to these included commands.

That's why we just have a separate "Plotter Rom".

Regards

Etienne

[John]

Thanks,

I am updating the PRM-85 userguide for HP-86/87 users, and would like to give some accurate advice on setting the board up. It would cause a clash if the machine had one ROM built in that was the same as one enabled on the PRM-85, so I am trying to avoid this occuring.

Regards,

John