[comp.sys.ibm.pc.programmer] INT 21 AX=5D06 Swap DOS data space call

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

Does DOS do it's own semaphoring with INT 2A AX=80xx/AX=81xx to ensure you
don't swap in the middle of a drive read/write?