Re: ROM dumping woes

From: peter karlsson (
Date: 2002-02-10 12:16:13

Marko Mäkelä:

> It'd be more efficient to use the S command in the machine language
> monitor, as suggested by someone.

Probably, but it's too late now... I'm in Oslo again, and the PET was a
bit too heavy to carry with me on the airplane... :)

> You should have received a LOAD ERROR or something.

I forgot to check the ST variable. I've added a check to the program
and is re-running it now. I'll try to run it on the different computers
I have (128, 64, VIC), and see if I can get a good copy from one of

Christopher Phillips:

> Hmm. It's probably worth doing some simple data integrity checks;

Yeah. Too bad I didn't think of that when I dumped it :-(

Ethan Dicks:

> I think you want to convert the data to hex if you are going to do a
> simple read/write program. Commas and nulls and carriage returns
> could cause the tape routines heartburn. It's probably on the input
> side, but I'm not certain of that.

As long as I use GET# to read the stuff back, it should work. I've read
binary data files that way before. Of course, the most efficient would
be to write an assembly program to do this, but I thought it was a bit
of an overkill (and since I didn't have a machine language monitor for
the VIC, it was a bit too complicated to dream up one during that

Me, in an earlier thread:


Interesting. According to The Web<tm> there is a "Jan Eén
Programkonsult" listed in the Gothenburg area in Sweden. Didn't find an
e-mail address, though.

peter  - iDOC= -

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