Function 48h

Allocate Memory

Allocates memory to the current program.

Input:

AH = 48h

BX = number of paragraphs to be requested

Output:

CF = 0 function is successful

AX = pointer to allocated block

CF = 1 function is unsuccessful

BX = size of largest available memory block in paragraphs

AX = error code

07h = memory control block destroyed

08h = insufficient memory

Comments:

This function always fails when it is executed within COM-format programs. This is because they initially occupy the largest available block of memory. Therefore you must free some memory before using this function.

Function 4Ah used once before this operation, will allow this Funtion to Pass.