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Graphics Programming Black Book (Special Edition)
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BlackBook.bin
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chapter12
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lst12-2.asm
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Assembly Source File
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1997-06-18
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342b
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4 lines
; Measures the effect of loading a byte register 1 cycle before
; using a register to address memory.
mov bp,2 ;run the test code twice to make sure ; it's cached sub bx,bxCacheFillLoop: call ZTimerOn ;start timing rept 1000 nop mov dl,cl mov ax,[bx] endm call ZTimerOff ;stop timing dec bp jz Done jmp CacheFillLoopDone: