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devel / comp.os.cpm / Re: Disassembler for CPM86 CMD filetypes ?

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* Disassembler for CPM86 CMD filetypes ?retrogear
`* Re: Disassembler for CPM86 CMD filetypes ?ldkr...@gmail.com
 `- Re: Disassembler for CPM86 CMD filetypes ?retrogear

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Disassembler for CPM86 CMD filetypes ?

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Subject: Disassembler for CPM86 CMD filetypes ?
From: larrygr...@gmail.com (retrogear)
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 by: retrogear - Fri, 17 Dec 2021 10:44 UTC

Is there a good disassembler that would recognize CPM86 .CMD filetypes ? Years ago I used ASMGEN3 but I think it only recognizes DOS .COM and .EXE filetypes. I would like to disassemble DSKMAINT.CMD v1.5 which is specifically for CCPM 3.1. I have the source code for dskmaint 4.1 but would like to modify the version that supports 3.1

Larry G

Re: Disassembler for CPM86 CMD filetypes ?

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Subject: Re: Disassembler for CPM86 CMD filetypes ?
From: ldkrae...@gmail.com (ldkr...@gmail.com)
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 by: ldkr...@gmail.com - Fri, 17 Dec 2021 16:19 UTC

Larry,
Linux (Debian Ver 11 - 64 bit) has z80asm & z80dasm. z80dasm is Ver 1.1.6-1
[quote]
The Z80 microprocessor is used in some 1980s home microcomputers, such as the
Sinclair ZX80, ZX81, Spectrum, Galaksija and in several newer devices, such
as graphical calculators from Texas Instruments and the original GameBoy.

This disassembler is useful for reverse engineering programs and operating
systems written for such devices. It produces assembly source code from binary
ROM images and tries to guess locations of labels and symbols. Its output can
be directly converted back to binary with a Z80 assembler, such as z80asm.
[/quote]

It should work fine to disassemble your file. If you send me the .CMD file via
email, I will disassemble it for you.

Thanks.

Larry

Re: Disassembler for CPM86 CMD filetypes ?

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Subject: Re: Disassembler for CPM86 CMD filetypes ?
From: larrygr...@gmail.com (retrogear)
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 by: retrogear - Fri, 17 Dec 2021 17:11 UTC

> It should work fine to disassemble your file. If you send me the .CMD file via
> email, I will disassemble it for you.
>
Thanks, I'll send it tonight when I get home. I'll also send the source code of the newer 4.1 version which could be used as a
kind of template. Some of it has to be similar. This is of course 8086 16-bit, not z80 8-bit.

Larry G

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