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Dandaman955

Z80Delay?

Dandaman955
Oct 24th, 2015
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Motorola 68000 HiSoft Dev 0.51 KB | None | 0 0
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  1. ClearZ80RAM:
  2.                move.w  #$1FFF,d0                ; Load length of Z80 RAM.
  3.                 lea     ($A00000).l,a0           ; Load start of Z80 RAM.
  4. loc_1168:
  5.                moveq   #$F,d1                   ; TODO - probably a timing issue?
  6. loc_116a:
  7.                move.b  #0,(a0)                  ; Clear a byte of Z80 RAM.
  8.                 tst.b   (a0)                     ; Is it clear? TODO what?! (probably to do with delay)
  9.                 dbeq    d1,loc_116a              ; If it isn't, branch.
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