Int 28 Fn 9999  u - Pcxdump V9.00+ - Installation Check                    [U]

   AX = 9999h

Return: AX = AAAAh if installed
       CX = version number * 100 (example: 03A2h = 930 = v9.30)
       DL = interrupt used by the dump function (see #2241)
       (00h if call not available)
       BX = CS of PCXDUMP's INT 28 handler (undocumented)
       ES = segment of PCXDUMP's memory block (v9.30, undocumented)
Program: PCXDUMP is a shareware screen grabber saving in PCX format

Notes: if DL<>00h a dump can be requested by calling INT DL as shown
     below (the user can choose the interrupt number at installation
     time); if DL=00h the dump function can be called only by hotkeys
     (this is the default)

(Table 2241)
Call PCXDUMP screen-dump function with:
   INT xx
   AX = 1234h
   BX = dump type
       0000h Color dump
       0001h Immediate color dump
       0002h Black/White dump
       0003h Immediate B/W dump
       0004h Inverted B/W dump
       0005h Gray scaled dump
       0006h Inverted gray scaled dump
       0007h Text screen dump to text file
       0008h Text screen dump to ansi file

Return: nothing

Notes: if BX=0001h, 0003h, 0007h or 0008h the whole screen will be
     dumped; the other valid values will draw a selection frame
     on the screen except in text modes (text modes allow only
     full screen dumps)
   this function doesn't perform the dump, it only requests it;
     the dump will be performed after a few milliseconds if it's
     safe to do so, thus the author recommends putting a 60 ms delay
     after this call