DOS/32 Advanced DOS Extender - Programmer's Reference 2.34 - DPMI function 0503h - Resize Memory Block Changes the size of a memory block that was previously allocated with the Allocate Memory Block function 0501h.
In: | AX = 0503h BX:CX = new size of block (bytes, must be nonzero) SI:DI = memory block handle
Out: | if successful: CF clear BX:CX = new linear address of memory block SI:DI = new handle for memory block if failed: CF set AX = error code 8012h - linear memory unavailable 8013h - physical memory unavailable 8014h - backing store unavailable 8016h - handle unavailable 8021h - invalid value (BX:CX = 0) 8023h - invalid handle (in SI:DI)
Notes: a) After this function returns, the previous handle for the memory block is invalid and should not be used. b) The linear address and handle of the memory block may change as a result of this call. c) It is the client's responsibility to update any descriptors that map the memory block with the new linear address after resizing the block. d) This function returns an error if the client attempts to resize a memory block to zero bytes. Copyright © DOS/32 Advanced Team 1996-2002 All Rights Reserved