[comp.os.msdos.programmer] Dos interrupt list & Undocumented calls

mshiels@tmsoft.uucp (Michael A. Shiels) (08/02/90)

Does anyone know what programs (or parts of DOS) use the undocumented call
to SWAP DOS DATA SPACE (INT 21 AX=5D06)?  Ie what things should you watch
for?