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AX = FF22h BX = new size in paragraphs DX = initial selector for block
Return:
CF clear if successful CF set on error AX = DOS error code (see #01680 at INT 21/AH=59h/BX=0000h) BX = maximum number of paragraphs available
Note: This function will also fail if the block is expanded past a 64K boundary and the next selector is already in use
See Also: AX=FF21h - AX=FF23h - INT 21/AH=49h
Category: DOS Extenders - Int 31h - C
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