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<TITLE>Int 2F/AX=D100h
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Int 2F/AX=D100h - MDEBUG command driver - GET STATUS -
AX = D100h
BX = version of MDEBUG (BH = major, BL = minor)
CX = command driver counter
---v1.60+---
DS:SI - MDEBUG identification table (see #03076)
ES = segment of display memory used by MDEBUG
DI = size of video mode used by MDEBUG
(high byte = lines, low byte = columns)
Return: DL = FFh
BX = version number of the driver if it is less than the version in BX,
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<h2>Int 2F/AX=D100h
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<h3><font color=#C00040>MDEBUG command driver - GET STATUS</font></h3>
<PRE>
AX = D100h
BX = version of MDEBUG (BH = major, BL = minor)
CX = command driver counter
---v1.60+---
DS:SI -> MDEBUG identification table <a href="rb-5505.htm#Table3076" tppabs="http://www.ctyme.com/intr/rb-5505.htm#Table3076">(see #03076)</a>
ES = segment of display memory used by MDEBUG
DI = size of video mode used by MDEBUG
(high byte = lines, low byte = columns)<br>
<p><b>Return:</b><br>DL = FFh
BX = version number of the driver if it is less than the version in BX,
else unchanged
CX incremented
</PRE>
<p><b>Program:</b>
MDEBUG is a shareware memory-resident debugging tool by Bernd
Schemmer, including a memory monitor, an interpreter, and a
disassembler
<PRE>
<p><b>Range:</b><br>AH=C0h to AH=FFh, selected by switch or programmatically
</PRE>
<p><b>Notes:</b>
Called by MDEBUG at start of popup session; if the version number
returned in BX is less than 1.52 (1.60 for MDEBUG v1.70), MDEBUG will
not call any of the other functions during this popup session.
MDEBUG can use any two consecutive multiplex numbers between C0h and
FFh; the default is D0h for the display driver and D1h for the
command driver (call INT 60/AH=00h"MDEBUG" for the multiplex numbers
actually used).
This function must end with a far call to the old INT 2F handler after
changing the registers.
This function MUST be reentrant.
Command drivers must also declare the following data at the given
offsets in the code segment
100h 3 BYTEs JMP-command in .COM-files
103h BYTE NOP-command (90h)
104h 26 BYTEs signature "Kommandotreiber f<>r MDEBUG"
11Eh 12 BYTEs name of driver, e.g. "MDHISDRV.COM"
each driver must have a unique name.
MDEBUG will pass every key and command to the command driver(s) before
checking for a valid internal command
<p><b>See Also:</b>
<a href="rb-5494.htm" tppabs="http://www.ctyme.com/intr/rb-5494.htm">AX=D000h</a> - <a href="rb-5506.htm" tppabs="http://www.ctyme.com/intr/rb-5506.htm">AX=D101h</a>
<PRE>
<p>
Format of MDEBUG identification table:
<a name=table3076></a>
Offset Size Description (Table 03076)
-2 WORD entry offset
00h WORD CS of MDEBUG
02h DWORD old INT 08h vector
06h DWORD old INT 09h vector
0Ah DWORD address INT 16h routine used by MDEBUG
0Eh BYTE length of version string
0Fh N BYTEs version string
</PRE>
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<b>Category: <a href="cat-006.htm" tppabs="http://www.ctyme.com/intr/cat-006.htm">
Debuggers/Debugging Tools</a>
- <a href="int-2f-1.htm" tppabs="http://www.ctyme.com/intr/int-2F.htm">
Int 2Fh</a>
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