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1994-04-15
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Snapmem. User's manual.
This resident program has been designed to take a "snapshot" of the
DOS memory (0 to 1 Mo) between the starting and ending addresses that
you can choose.
The activation hotkey can be set when launching.
The output can be the screen, a file or both.
Syntax: SnapMem [/K=Msk...[-Msk][-Key]] [/B=Beginning] [/E=End]
[/O=Output1[-Output2]] [/N=[Path]File name]
[/A] [/H] [/U]
The program does not make case distinction when reading the parameters
on the command line.
- Msk, Mask keys : RSH (right shift), LSH (left shift), CTL, ALT,
SYS ("System" key, on AT keyboard only), BRK ("Break" key), NUM
("Numlock"), CPS ("Capslock"), INS ("Insertion").
You can activate any combination of keys.
- Key : ASCII character, A to Z, digits 0 to 9 (on the numeric keypad
only) or function keys (F1 to F9).
WARNING, this program has been designed for QWERTY keyboards. If you
have an AZERTY (french for instance) keyboard, some letters will be
misplaced (Alt-Q will be activated by Alt-A for instance).
There are two solutions :
- Avoid letters wich are not at the same place on both keyboards.
- Define Keyb, Fr and then switch on the keyboards type in typing
Ctl-Alt-F1 (american) or Ctl-Alt-F2 (french).
- Beginning and End, numbers between 0 and 1048575 ($0 and $FFFFF).
Both notation (decimal and hexa) are correct.
These numbers are rounded modulo 256.
- Outpout BF : Binary file, TF ; Text file, SC : Screen. You can't
set both binary and text file at the same time. The output screen
will be displayed only if you are running in text mode. The width of
data display on the screen and the length of text file lines are set
to 64 characters.
- Path + File name : defines the name of the memory dump file. This
parameter is used only if the option /O=BF or /O=TF is activated.
- ASCII characters between $07 (Bell) and $13 (end of line) and the
$1A character (end of text file) are discarded when the output
is a text file (these characters are replaced by blank spaces).
WARNING : If you wish to print the output file, don't forget to remove
the printer control characters (ASCII 0 to 31 + ASCII 127). In order
to do it, you can use the XTXT program that must be in the disk.
- If the parameter /A is used, hexa addresses are displayed in front of
the data extracted from the memory.
- The /H parameter displays a help screen which recalls SnapMem's
commands. In this case, the program is not launched.
- The /U parameter removes SnapMem.
Example : SnapMem /K=Ctrl-Alt-Y /B=65536 /E=$FFFC0 /O=TF-SC /A
/N=C:\TEMP\MEMORY.TXT
Default settings : /K = Ctl-Alt-S
/B = $00000 /E = $FFFFF
/O = TF
/N = Memory.Snp
/A is not active.
When activating the resident program, you can see the program's
progress with a bar-graph displayed on the screen. SnapMem saves and
restores the current screen when the text mode is active. If a
graphic mode is active, this feature is inhibited so that you cannot
see the dump's running even when the parameter /O=SC is on. In that
case, you temporarely loose the control of your program until the
memory dump ends.