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Rob W · 11-06-2021, 03:20 PM

Hello,

I've been working on an HP-35 replica (workalike, not lookalike), photo below. I've got it all working but I'm looking for the bug-fixed ROM object code.

[Image: mb7qcbI.png]

I know about Peter Monta's ROM dumps located here: http://www.pmonta.com/calculators/hp-35/. His 35v2.obj file is exactly what I'm looking for but I'd like the bug-fixed version. I can use other formats as well.

Any help is appreciated.

Thanks,

-Rob

teenix · 11-06-2021, 11:15 PM

I can supply it but what format do you need it in. I don't know how your project decodes the HP-35 firmware.

cheers

Tony

Rob W · 11-07-2021, 02:27 AM

Hi Tony,

My preferred format is like this:

Each line represents a 10-bit instruction word. The first four digits are the address in octal and the last four digits are the 10-bit instruction word in octal. All three ROMs are in one file.

I've already written the Verilog parser to read that format, but I can take another format.

Thanks,

-Rob

teenix · 11-07-2021, 03:30 AM

(11-07-2021 02:27 AM)Rob W Wrote: Hi Tony,

My preferred format is like this:

Code:

0000:0335 0001:1377 0002:1044 0003:0027 ⋮ 1374:0530 1375:1007 1376:0514 1377:0773

Each line represents a 10-bit instruction word. The first four digits are the address in octal and the last four digits are the 10-bit instruction word in octal. All three ROMs are in one file.

I've already written the Verilog parser to read that format, but I can take another format.

Thanks,

-Rob

I had to write some code for the conversion with the data I have so hopefully I got it right...

Rob W · 11-08-2021, 04:18 PM

Wow! I'm amazed at how quickly you responded with this. Thanks so much.

One question: On Peter Monta's site, he shows assembly listings for v4 and v2:

- hp-35 version 4 assembler: 35.asm
- hp-35 version 2 assembler: 35v2.asm

Would the code you supplied be the "v4" code? Do you know of a resource on the web or otherwise that lists these versions?

Thanks again,

-Rob

teenix · 11-08-2021, 08:05 PM

Hi Rob,

Sorry, no on both. The 2 sets of code I have either have the bug or not, that's all I know about them.

Peters site lists them both in text format if that is what you are after.

cheers

Tony

(11-08-2021 04:18 PM)Rob W Wrote: Wow! I'm amazed at how quickly you responded with this. Thanks so much.

One question: On Peter Monta's site, he shows assembly listings for v4 and v2:

- hp-35 version 4 assembler: 35.asm
- hp-35 version 2 assembler: 35v2.asm

Would the code you supplied be the "v4" code? Do you know of a resource on the web or otherwise that lists these versions?

Thanks again,

-Rob

Rob W · 11-08-2021, 08:14 PM

Hi Tony,

What you provided is exactly what I was after. I'm just curious about the versions.

Thanks again,

-Rob

teenix · 11-09-2021, 02:22 AM

The HP-35 description on the MoHPC main page might help.

cheers

Tony