INT 21 - DOS 3.x - SET MEMORY ALLOCATION STRATEGY               

Input

DOS1 N DOS2 N

DOS3

Y DOS5 Y

Output

AX

58h 01h Error Code AX

BX

 Strategy Code     BX

CX

        CX

DX

        DX

ES:DI

  Set if Error CF
Note:   The Set subfunction accepts any value in BL; 2 or greater
           means last fit. the Get subfunction returns the last value
           set, so programs should check whether the value is >= 2,
           not just equal to 2.

Strategy Codes: 00h = First Fit, low 640K
                01h = Best Fit, low 640K
                02h = Last Fit, low 640K
                40h = First Fit, UMBs Only
                41h = Best Fit, UMBs Only
                42h = Last Fit, UMBs Only
                80h = First Fit, UMBs First
                81h = Best Fit, UMBs First
                82h = Last Fit, UMBs First

 
See Also 48h 49h 4Ah Memory Control Block Error Codes


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