Disassemble a memdump.dat created by Atari800WinPlus?

[Assem]

I tried to disassemble a memory dump file that I created from the Atari800WinPlus monitor (ie: memdump.dat created via the WRITE command) using the DIS6502 Atari Disassembler, but unfortunately it does not appear to support these dump files directly. Is anyone aware of another utility that can do this?

 

My reason for asking is I was comparing a 'before' memdump.dat with an 'after' memdump.dat using a program editor in hex mode (PSPAD) and I can see that some of the memory locations have changed which is actual assembler code (rather than data). It would be a lot simpler if I could actually view a disassembled listing of the whole memory showing opcodes, etc. A long winded way I can do it is to just save the object code to file within an ATR image and then use DIS6502 to open the file within the ATR and disassemble it, but this is quite time consuming becuase I need to do it frequently.

 

Any ideas anyone Cheers.

Edited February 24, 2009 by Assem

[Rybags]

Been a while since I've used one of the stand-alone Disassemblers, but...

 

The Memdump.DAT files don't have any headers, they're just raw data.

 

You could easily just create a file that has the binary header it needs, then use a Command Line copy to join the 2 files, or just do so in turbo mode in the emulator.

 

So, e.g. if you were to dump out $4000-$7FFF.

 

Just create a file with data $FF,$FF,$00,$40,$FF,$7F in it. Then join the dumped file onto the end of it.

 

If it's the case that it only supports boot disks, then you could use a similar method.

[Assem]

Thanks Rybags. That worked a treat.