new version of DEBUG.COM

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Japheth

Joined: 26 Oct 2004
Posts: 151

Japheth 17 Nov 2006, 14:50

Hi,

I proudly present DEBUG.COM v1.0pre.

Although the version number suggests it, it is not the first version of this tool, it is a new (pre)release of the FreeDOS DEBUG, which intends to be fully compatible with MS-DOS DEBUG.

The features of this tool are:

- it has the same nice user interface as MS-DOS DEBUG.COM
- unlike the MS-DOS variant, it is aware of 32-bit cpus and FPU
- unlike the MS-DOS variant, it is aware of DPMI and can
debug 16 and 32-bit DPMI protected-mode applications.

it is not the final version yet, there are known bugs, I'm currently collecting the things which have to be implemented/fixed for the final 1.0. Therefore Feedback is welcome.

http://www.japheth.de/Download/debug105.zip (updated 04/01/2007)

Last edited by Japheth on 01 Apr 2007, 07:41; edited 1 time in total

17 Nov 2006, 14:50

Dex4u

Joined: 08 Feb 2005
Posts: 1601
Location: web

Dex4u 17 Nov 2006, 16:15

Nice work, but i think it needs converting to Fasm Wink

17 Nov 2006, 16:15

Goplat

Joined: 15 Sep 2006
Posts: 181

Goplat 17 Nov 2006, 16:57

I can't get the DPMI version to work in XP, it just hangs without displaying anything. Running it in either dosbox or qemu with cwsdpmi does the same.

17 Nov 2006, 16:57

Japheth

Joined: 26 Oct 2004
Posts: 151

Japheth 17 Nov 2006, 17:23

> I can't get the DPMI version to work in XP,

Please download again.

17 Nov 2006, 17:23

Goplat

Joined: 15 Sep 2006
Posts: 181

Goplat 17 Nov 2006, 19:35

Cool, now it works Very Happy

17 Nov 2006, 19:35

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 21 Nov 2006, 14:37

Also, he's updated FreeDOS's EMM386:

Quote:

Jemm386 is an Expanded Memory Manager for DOS, based on the source of FreeDOS EMM386.
It has several advantages compared to FreeDOS and/or MS-DOS EMM386:

needs only 192 bytes DOS memory

needs very little extended memory

is faster

works with MS-DOS, FreeDOS and EDR-DOS

will use features implemented on later CPUs to further increase speed

21 Nov 2006, 14:37

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 26 Feb 2007, 18:56

FD debug 1.03 wrote:

1.01 [26 November 2006] bugfix: MC2 didn't work. Register names
can be used anywhere where a number is expected as input.
1.02 [29 November 2006] bugfix: 'i d' and 'o d' didn't work because
the parser assumed 'id' and 'od' commands. bugfix: 't=' and 'g='
didn't work in protected-mode. bugfix: loading a file at another
location than cs:100h was not supported in versions 0.99 - 1.01.
Debugger can be loaded high.
1.03 [1 February 2007] bugfix: previous version of DEBUG.COM did not
reliably reset "auto-reset" breakpoints (used for processing INTs).
DEBUGX.COM was not affected by this bug. 'di' now works in real-mode
as well. 'dm' command added.

Jemm386 5.40 wrote:

02/20/2007: v5.4

- some minor bugfixes.
- Jemm386 now moves its resident part to the first UMB which it supplies.
- NOHI option implemented.
- Jemm386 now uses the true (=zero-based) flat memory model.

01/11/2007: v5.34

- bugfix: Jemm386 always hooked int 15h, ah=4Fh, thus always acting as
if option ALTBOOT was set (bug introduced in v5.25).

01/06/2007: v5.33

- bugfix: Jemm386 erroneously might have disabled EMS (on EDR-DOS only?).
- reboot code slightly changed, there were still some machines (old 80486?)
were Ctrl-Alt-Del didn't work.

11/13/2006: v5.32

- removed an optimisation which PKZIP didn't like.

http://www.japheth.de

26 Feb 2007, 18:56

Japheth

Joined: 26 Oct 2004
Posts: 151

Japheth 05 Mar 2007, 08:59

a new version of DEBUG.COM has been created:

http://www.japheth.de/Download/debug104.zip

which will automatically switch to low-level I/O routines if the InDOS flag is set, thus allowing to single-step through DOS code itself.

http://www.japheth.de/Jemm386.html has also been updated. The newest version can be loaded and unloaded without rebooting.

05 Mar 2007, 08:59

DOS386

Joined: 08 Dec 2006
Posts: 1905

DOS386 05 Mar 2007, 09:23

Quote:

a new version of DEBUG.COM has been created:
http://www.japheth.de/Download/debug104.zip

Thanks.

Quote:

This debugger extends the DOS version in the
following ways:

Should be MS-DOS or MS-DOG probably ...

Could you please add some info also about how to use it ?

The manual does not really contain such info. Some online info about
M$-DOG DEBUG exists but does not actually help either:

Quote:

Why does the same memory location contain 2 different values
in 2 instances of DEBUG

Used latest NT-based ^^^ version of MS-DOS Sad

BTW: I already found 1 bug using a debugger Smile

... but it was deb32,
not FD-DEBUG Shocked

_________________
Bug Nr.: 12345

Title: Hello World program compiles to 100 KB !!!

Status: Closed: NOT a Bug

05 Mar 2007, 09:23

Japheth

Joined: 26 Oct 2004
Posts: 151

Japheth 05 Mar 2007, 09:43

> Should be MS-DOS or MS-DOG probably ...

Might be, but the files are copyrighted Paul Vojta, which means I should be careful with modifications (additions are not that a problem).

> Could you please add some info also about how to use it ?

But it is self-explanatory Surprised

. BTW, the main purpose of DEBUG.COM is for ASM learners, to provide a quick way trying out opcodes with the inline assembler. Although, it was the only debugger being able to debug Jemm386 switching from v86 back to real-mode, so it's beginning to become valuable even if used as debugger.

> BTW: I already found 1 bug using a debugger Smile ... but it was deb32,
> not FD-DEBUG Shocked

surely not the only bug in deb32 ... it needs a redesign ... since 10 years.

05 Mar 2007, 09:43

DOS386

Joined: 08 Dec 2006
Posts: 1905

DOS386 05 Mar 2007, 10:17

Quote:

surely not the only bug in deb32

Found a bug in MY code using deb32 Shocked

Quote:

needs a redesign ... since 10 years.

Could be less complicated (less files) for my taste ...

but the manual of deb32 is better than of FD-DEBUG ... but still there is
space for improvements Wink

_________________
Bug Nr.: 12345

Title: Hello World program compiles to 100 KB !!!

Status: Closed: NOT a Bug

05 Mar 2007, 10:17

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 05 Mar 2007, 22:11

DOS386 wrote:

Quote:
This debugger extends the DOS version in the
following ways:

Should be MS-DOS or MS-DOG probably ...

Could you please add some info also about how to use it ?

Not sure if this is what you're asking, but download DEBUGTUT.ZIP (or view online). Or, here's a seemingly better tutorial (haven't really checked this out, but it seems helpful).

05 Mar 2007, 22:11

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 24 May 2007, 08:02

JEMM386 5.60 (binaries | sources | readme.txt)
HIMEMX 3.30 (binaries + sources)
DEBUG / DEBUGX 1.06 binaries + sources | readme.txt)

Also, TDE (text editor) is now at 5.1v, and the error browser (manually jumping to code errors after trying to compile) correctly works with FASM now.

24 May 2007, 08:02

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