HP-87 EDISK query



#2

Hi,

I have an HP-87 with the EDISK (Electronic Disk) ROM but no manual, and have a query about allocating memory to EDISK which I wonder if anyone can answer please.

Heres what I know so far:

With 2 x 128K Memory modules plugged in, total memory is about 260K. If I type CONFIG (no parameters) an electronic disk of 160K is formed (accessed as :D000), leaving 128K for programs (minus 4K overheads).

With 1 x 128K Memory module plugged in, total = 160K. When I type CONFIG an electronic disk of 32K is formed, again leaving 128K for programs.

Question is, is there an option to reduce the memory left for programs and increase the sizeof the electronic disk?

Thanks,
John


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP Prime (emulator): Zeta function query Paul Townsend (UK) 7 881 09-29-2013, 08:17 PM
Last Post: Paul Dale
  9815 data cartridge drive (also 9825 / 9845 / 85 / 87, and who knows what else) John Ioannidis 2 487 06-12-2013, 07:20 PM
Last Post: Craig Ruff
  HP 86/87 - CP/M Ph.Théry 3 472 05-27-2013, 04:02 AM
Last Post: Olivier De Smet
  HP-87 power supply repair philippe_elie 0 300 11-18-2012, 11:12 AM
Last Post: philippe_elie
  Looking for HP-87 service manual philippe_elie 2 427 11-08-2012, 02:07 AM
Last Post: philippe_elie
  HP 9127A with 85/87 David Ramsey 4 525 06-07-2011, 11:37 AM
Last Post: David Ramsey
  Default switch settings for HP-87 HP-1B David Ramsey 3 403 05-06-2011, 08:52 PM
Last Post: David Ramsey
  Query re. HP 82973A HP-IL Interface card and 82161A Digital Cassette Drive John AS (UK) 8 704 03-12-2010, 08:50 AM
Last Post: John AS (UK)
  HP-41 / EMU41P emulator query John AS (UK) 4 474 03-04-2010, 06:19 AM
Last Post: Ángel Martin
  HP-87 - missing half of a ROM expansion David Dyte 1 303 11-20-2008, 11:23 AM
Last Post: John AS (UK)

Forum Jump: