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QCMP.ASM
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Assembly Source File
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1994-11-28
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1KB
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62 lines
PAGE 66,132
;
;
;
;
;
;
;
;
; qcmp.asm
;
; Efficient compare operation. Does not handle segment wraps!!!!
; Returns 0 if compare is identical
;
;
; Usage :
; qcmp( soff, sseg, doff, dseg, count )
; unsigned int soff; /* source offset */
; unsigned int sseg; /* source segment */
; unsigned int doff; /* destination offset */
; unsigned int dseg; /* destination segment */
; unsigned int count; /* byte count */
;
; (c) 1991 University of Waterloo,
; Faculty of Engineering,
; Engineering Microcomputer Network Development Office
;
; version
;
; 0.0 31-Oct-1990 E. P. Engelke - brief version
;
;
include masmdefs.hsm
include model.hsm
codedef QCMP
datadef
cstart QCMP
cpublic qcmp
mov DX, DS
mov BX, ES ;save segment registers
lds SI, +@AB+0[BP]
les DI, +@AB+4[BP]
mov CX, +@AB+8[BP] ;byte count
cld
repe cmpsb
mov AX, CX
mov ES, BX
mov DS, DX
creturn qcmp
cend QCMP
end