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Int 31 Fn 0503 P - DPMI 0.9+ - Resize Memory Block [E]
AX = 0503h
BX:CX = new size in bytes (nonzero)
SI:DI = handle of memory block
Return: CF clear if successful
BX:CX = new linear address
SI:DI = new handle of memory block
CF set on error
AX = error code (DPMI 1.0+) (8012h-8014h,8016h,8021h,8023h)
(see AX=0000h)
Notes: any selectors pointing at the block must be updated
the previous memory block handle becomes invalid
an error is returned if the new size is 0
See Also: AX=0102h,AX=0501h,AX=0505h
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