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pagefault
2003-03-17 01:36:52 +00:00
parent d35231879b
commit 8aa021748b
5 changed files with 338 additions and 153 deletions
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45
zsnes/src/cpu/dma.asm
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@@ -37,7 +37,9 @@ NEWSYM DmaAsmStart
;*******************************************************
; DMA transfer register
NEWSYM AddrNoIncr, db 0
section .bss
NEWSYM AddrNoIncr, resb 1
section .text
%macro ExecSPCCycles 0
xor ebx,ebx
@@ -220,6 +222,7 @@ NEWSYM transdma
mov byte[AddrNoIncr],0
ret
section .data
ALIGN32
.curbank dd 0
@@ -233,6 +236,7 @@ ALIGN32
.regptrd dd 0
.readaddr dd 0
.cebx dd 0
section .text
NEWSYM transdmappu2cpu
; set address increment value
@@ -379,6 +383,7 @@ NEWSYM transdmappu2cpu
pop eax
ret
section .data
ALIGN32
.curbank dd 0
@@ -392,6 +397,7 @@ ALIGN32
.regptrd dd 0
.writeaddr dd 0
.cebx dd 0
section .text
%macro TestDMA 0
%endmacro
@@ -566,9 +572,11 @@ NEWSYM setuphdma
or [hdmatype],ah
ret
section .data
.addrwrite dw 0,0,0,0, 0,1,0,1, 0,0,0,0, 0,0,1,1, 0,1,2,3, 0,1,2,3, 0,1,2,3
dw 0,1,2,3
.addrnumt db 1,2,2,4,4,4,4,4
section .text
NEWSYM setuphdmars
push eax
@@ -666,9 +674,11 @@ NEWSYM setuphdmars
pop eax
ret
section .data
.addrwrite dw 0,0,0,0, 0,1,0,1, 0,0,0,0, 0,0,1,1, 0,1,2,3, 0,1,2,3, 0,1,2,3
dw 0,1,2,3
.addrnumt db 1,2,2,4,4,4,4,4
section .text
NEWSYM setuphdma2
push eax
@@ -777,12 +787,17 @@ NEWSYM setuphdma2
and [nexthdma],ah
ret
section .data
.addrwrite dw 0,0,0,0, 0,1,0,1, 0,0,0,0, 0,0,1,1, 0,1,2,3, 0,1,2,3, 0,1,2,3
dw 0,1,2,3
.addrnumt db 1,2,2,4,4,4,4,4
NEWSYM hdmastartsc, db 0
NEWSYM hdmarestart, db 0
section .bss
NEWSYM hdmastartsc, resb 1
NEWSYM hdmarestart, resb 1
section .text
NEWSYM reg420Cw
@@ -1024,7 +1039,9 @@ NEWSYM dohdma
pop eax
ret
.tempdecr db 0
section .bss
.tempdecr resd 1
section .text
NEWSYM hdmatype2
mov al,[edx+16]
@@ -1067,7 +1084,9 @@ NEWSYM hdmatype2
dec byte[esi+10]
ret
.tempdecr db 0
section .bss
.tempdecr resd 1
section .text
NEWSYM indirectaddr
push eax
@@ -1128,7 +1147,7 @@ NEWSYM indirectaddr
mov bl,[esi+7]
mov cx,[esi+5] ; increment/decrement/keep pointer location
add cx,3
call dword near [memtabler8+ebx*4]
call dword near [memtabler8+ebx*4]
call dword near [edx+12]
jmp .finhdma
.nozero
@@ -1146,11 +1165,17 @@ NEWSYM indirectaddr
pop eax
ret
.tempdecr db 0
section .bss
.tempdecr resd 1
section .data
.fname2 db 9,'vram2.dat',0
section .text
EXTSYM spcRam
section .data
NEWSYM ewj2hack, dd 0
section .text
NEWSYM hdmatype2indirect
cmp dword [ewj2hack],1
@@ -1243,8 +1268,10 @@ NEWSYM hdmatype2indirect
dec byte[esi+10]
ret
.dest dd 0
.tempdecr db 0
section .bss
.tempdecr resd 1
.dest resd 1
section .text
NEWSYM exechdma
cmp byte[hdmarestart],1