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Reading HP67 ROMs
06-29-2022, 02:06 AM (This post was last modified: 06-29-2022 02:07 AM by teenix.)
Post: #21
RE: Reading HP67 ROMs
Hi all,

I was reading the 1818-0229 ROM chip listed as ROM 5 in the 97 service manual to test some code mods because it is accessed from ROM Bank 1 and is now working ok.

I then thought that this was supposed to be the highest ROM with RAM included on chip and then logically this would be the highest RAM bank, address space $30 - $3F, but it only read back from address space $20 - $2F.

The plot thickens.

cheers

Tony
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Messages In This Thread
Reading HP67 ROMs - Marcovecchio - 05-05-2022, 01:50 AM
RE: Reading HP67 ROMs - teenix - 05-05-2022, 03:59 AM
RE: Reading HP67 ROMs - teenix - 05-12-2022, 05:06 AM
RE: Reading HP67 ROMs - Marcovecchio - 05-05-2022, 10:53 PM
RE: Reading HP67 ROMs - teenix - 05-05-2022, 11:36 PM
RE: Reading HP67 ROMs - Marcovecchio - 05-06-2022, 01:51 AM
RE: Reading HP67 ROMs - teenix - 05-06-2022, 05:11 AM
RE: Reading HP67 ROMs - teenix - 05-07-2022, 12:41 AM
RE: Reading HP67 ROMs - Marcovecchio - 05-08-2022, 01:30 AM
RE: Reading HP67 ROMs - teenix - 05-08-2022, 02:34 AM
RE: Reading HP67 ROMs - Dreato - 05-12-2022, 04:28 PM
RE: Reading HP67 ROMs - Marcovecchio - 05-13-2022, 03:56 AM
RE: Reading HP67 ROMs - teenix - 05-13-2022, 04:58 AM
RE: Reading HP67 ROMs - teenix - 06-05-2022, 10:37 AM
RE: Reading HP67 ROMs - Marcovecchio - 06-10-2022, 08:50 AM
RE: Reading HP67 ROMs - teenix - 06-10-2022, 12:52 PM
RE: Reading HP67 ROMs - teenix - 06-12-2022, 08:13 AM
RE: Reading HP67 ROMs - Marcovecchio - 06-25-2022, 10:57 PM
RE: Reading HP67 ROMs - teenix - 06-26-2022, 06:38 AM
RE: Reading HP67 ROMs - teenix - 06-28-2022, 02:34 AM
RE: Reading HP67 ROMs - teenix - 06-29-2022 02:06 AM
RE: Reading HP67 ROMs - teenix - 07-12-2022, 03:28 AM
RE: Reading HP67 ROMs - Marcovecchio - 07-14-2022, 11:11 AM
RE: Reading HP67 ROMs - teenix - 07-21-2022, 01:34 AM
RE: Reading HP67 ROMs - tangdfx - 07-21-2022, 02:36 AM
RE: Reading HP67 ROMs - teenix - 07-21-2022, 02:58 AM
RE: Reading HP67 ROMs - tangdfx - 07-21-2022, 03:19 AM
RE: Reading HP67 ROMs - teenix - 07-21-2022, 03:48 AM
RE: Reading HP67 ROMs - tangdfx - 07-21-2022, 04:02 AM
RE: Reading HP67 ROMs - teenix - 07-29-2022, 08:38 AM
RE: Reading HP67 ROMs - Paul Dale - 07-30-2022, 09:05 AM
RE: Reading HP67 ROMs - Thomas Klemm - 07-30-2022, 10:23 AM
RE: Reading HP67 ROMs - teenix - 08-08-2022, 03:39 AM



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