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flat assembler > DOS > debugger and disassembler

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Ali.A



Joined: 08 Jan 2018
Posts: 133
so i want a dos debugger and disassembler, at least a debugger with great features.
its not much important to be a feature rich disassembler.

tried googling a bit, but found nothing useful .. nothing will allow me to step thru the disassembly.

i need it for win98.

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Post 06 Feb 2018, 11:30
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DimonSoft



Joined: 03 Mar 2010
Posts: 451
Location: Belarus
Ali.A wrote:
so i want a dos debugger and disassembler, at least a debugger with great features.
its not much important to be a feature rich disassembler.

tried googling a bit, but found nothing useful .. nothing will allow me to step thru the disassembly.

i need it for win98.

Still not sure if you’re looking for a debugger for MS-DOS or Windows 98 programs.

Anyway, personally I suggest my students using Turbo Debugger for MS-DOS program debugging. Let me know if you want me to share my copy of it.
Post 06 Feb 2018, 19:26
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Ali.A



Joined: 08 Jan 2018
Posts: 133
i have couple programs (16-bit) must run in real mode, since they are using kernel and bios interrupts.
thus im looking for debugger to step thru this, just for basic understanding of things.

if its able to to debug then yeah, i wanna check it out.
Post 07 Feb 2018, 01:58
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DimonSoft



Joined: 03 Mar 2010
Posts: 451
Location: Belarus
Ali.A wrote:
i have couple programs (16-bit) must run in real mode, since they are using kernel and bios interrupts.
thus im looking for debugger to step thru this, just for basic understanding of things.

if its able to to debug then yeah, i wanna check it out.

Yep, that’s exactly what Turbo Debugger is for. I guess, you’re aware that such applications (16-bit) cannot be run directly if you have a 64-bit OS.
Post 07 Feb 2018, 08:10
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yeohhs



Joined: 19 Jan 2004
Posts: 171
Location: N 5.43564° E 100.3091°
Recently, while playing with DOS, I found this:

https://sites.google.com/site/pcdosretro/enhdebug

Quote:

Enhanced DEBUG for PC DOS and MS-DOS
Enhanced DEBUG is a DOS debugger compatible with the utility found in PC DOS and MS-DOS but with many more features. Enhanced DEBUG was originally developed by Paul Vojta and was maintained by Andreas "Japheth" Grech until version 1.25.

The enhanced DEBUG package includes DEBUG.COM which is a replacement for the standard DOS DEBUG and DEBUGX.COM which can debug DPMI client programs and has more features but uses more memory. The inclusion of some features are controlled by defines in the source code. DEBUG supports assembly and disassembly of all Intel x86 instructions up to the Pentium Pro (P6). Note EMS support is disabled by default because it is not useful to typical debugging. EMS support may be enabled by defining EMSCMD to 1 and rebuilding. Enabling EMS support will increase memory usage by 1.2KB. Enhanced DEBUG runs on DOS 2.0 and later.

Despite having more features than the standard DOS DEBUG, the enhanced DEBUG.COM uses less memory (though DEBUGX.COM which has even more features uses more memory):

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Post 07 Feb 2018, 09:08
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7000
Location: Kraków, Poland
If you like the text-mode-UI type of debuggers (like the aforementioned Turbo Debugger) I recommend my old personal favorite, Cyberware Code Digger hidden in the CUP386 unpacker.
Post 07 Feb 2018, 11:13
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Ali.A



Joined: 08 Jan 2018
Posts: 133
you guys made me happy, really.

ill download all the three debuggers, and see which one fit.

thank you so much. appreciated.
Post 07 Feb 2018, 13:52
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rugxulo



Joined: 09 Aug 2005
Posts: 2311
Location: Usono (aka, USA)
I mentioned a few here, but there are so many others.

N.B. I dislike ENHDEBUG because it's a non-free fork of FD Debug.

Post 07 Feb 2018, 21:17
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rugxulo



Joined: 09 Aug 2005
Posts: 2311
Location: Usono (aka, USA)
As far as disassemblers go, the DOS FAQ mentions a few (e.g. DASM, BIEW, OBJCONV, NDISASM).

Others like HTE are Win32 only (but older 0.7.5 had a DOS/DJGPP build).

There's also IDA 3.7 freeware (last DOS version?).

Not sure what else, there's just so much (although none is perfect).
Post 07 Feb 2018, 22:06
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CandyMan



Joined: 04 Sep 2009
Posts: 286
Location: film "CandyMan" directed through Bernard Rose OR Candy Shop
I recommend dark debugger DeGlucker successor
https://board.flatassembler.net/topic.php?p=184499#184499

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Post 08 Feb 2018, 12:21
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