MASM 5.10 MACRO.DOC: Memory Control

ID Number: Q34576

5.10 | 5.10

MS-DOS | OS/2

Summary:

The following information was taken from the MASM Version 5.10

MACRO.DOC file.

More Information:

MEMORY CONTROL

@FreeBlok (49h)

Frees a block of memory

Syntax: @FreeBlok [segment]

Argument: segment = Starting address of memory to be

freed; if none, ES address assumed

Return: If carry set, error code in AX

Register used: AX; ES if segment given

@GetBlok (48h)

Allocates a block of memory

Syntax: @GetBlok paragraphs

Argument: paragraphs = Paragraphs (16 bytes) of memory

wanted

Return: AX and ES = Segment address of allocated

memory

BX = Paragraphs actually allocated (may be

less than requested if memory is short)

Register used: AX and BX

@ModBlok (48h)

Modifies an allocated block of memory

Syntax: @ModBlok paragraphs [,segment]

Argument: paragraphs = Paragraphs (16 bytes) of memory

wanted

segment = Starting address of memory to be

freed;

if none, ES address assumed

Return: If carry set, error code in AX, else:

ES = Segment address of allocated memory

BX = If carry is clear, paragraphs allocated

Register used: AX and BX; ES if segment given