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Lynn "Zhorken" Vaughan 2012-05-14 21:57:00 -04:00
parent 45083625ee
commit 28e223d988
1 changed files with 7 additions and 7 deletions
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14
main.asm
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@ -27,19 +27,19 @@ CopyBytes: ; 0x3026
SwapBytes: ; 0x3034 SwapBytes: ; 0x3034
; swap bc bytes between hl and de ; swap bc bytes between hl and de
.Loop .Loop
; stash [hl] away on the stack ; stash [hl] away on the stack
ld a, [hl] ld a, [hl]
push af push af
; copy a byte from [de] to [hl] ; copy a byte from [de] to [hl]
ld a, [de] ld a, [de]
ld [hli], a ld [hli], a
; retrieve the previous value of [hl]; put it in [de] ; retrieve the previous value of [hl]; put it in [de]
pop af pop af
ld [de], a ld [de], a
; handle loop stuff ; handle loop stuff
inc de inc de
dec bc dec bc
ld a, b ld a, b
@ -84,19 +84,19 @@ GetFarByte: ; 0x304d
GetFarHalfword: ; 0x305d GetFarHalfword: ; 0x305d
; retrieve a halfword from a:hl, and return it in hl. ; retrieve a halfword from a:hl, and return it in hl.
; bankswitch to new bank ; bankswitch to new bank
ld [$ff00+$8b], a ld [$ff00+$8b], a
ld a, [$ff00+$9d] ld a, [$ff00+$9d]
push af push af
ld a, [$ff00+$8b] ld a, [$ff00+$8b]
rst $10 rst $10
; get halfword from new bank, put it in hl ; get halfword from new bank, put it in hl
ld a, [hli] ld a, [hli]
ld h, [hl] ld h, [hl]
ld l, a ld l, a
; bankswitch to previous bank and return ; bankswitch to previous bank and return
pop af pop af
rst $10 rst $10
ret ret