www.pudn.com > zsnes117b-src.zip > regsw.inc
;Copyright (C) 1997-2001 ZSNES Team ( zsknight@zsnes.com / _demo_@zsnes.com )
;
;This program is free software; you can redistribute it and/or
;modify it under the terms of the GNU General Public License
;as published by the Free Software Foundation; either
;version 2 of the License, or (at your option) any later
;version.
;
;This program is distributed in the hope that it will be useful,
;but WITHOUT ANY WARRANTY; without even the implied warranty of
;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;GNU General Public License for more details.
;
;You should have received a copy of the GNU General Public License
;along with this program; if not, write to the Free Software
;Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
EXTSYM initsfxregsw,reg420Bw,reg420Cw,regptw,initSA1regsw,SDD1Reset
EXTSYM SPC7110Reset,RTCReset2
EXTSYM xat,xdbt,xdt,xpbt,xst,xxt,xyt
EXTSYM DSPMem,WDSPReg0C,WDSPReg0D,WDSPReg0F,WDSPReg1C,WDSPReg1F
EXTSYM WDSPReg2C,WDSPReg2F,WDSPReg3C,WDSPReg3D,WDSPReg3F,WDSPReg4F
EXTSYM WDSPReg5F,WDSPReg6C,WDSPReg6F,WDSPReg7D,WDSPReg7F
EXTSYM debstop
EXTSYM cachesprites,curblank,processsprites,sprleftpr,sprlefttot,NextLineCache
EXTSYM vidmemch2,vidmemch4,vidmemch8,vrama
EXTSYM nmirept,sndwrit,spcRam
EXTSYM HIRQCycNext,HIRQNextExe,HIRQSkip
EXTSYM cycpb268,cycpb358,cycpbl,cycpblt,opexec268,opexec268cph
EXTSYM opexec358,opexec358cph
EXTSYM hdmarestart
EXTSYM printhex8
NEWSYM testgfxv1, db 0
NEWSYM testgfxv2, db 0
NEWSYM initregw
; Fill register pointer with invalid register accesses
mov edi,[regptw]
add edi,8000h
mov ecx,3000h
mov eax,regINVALIDw
.loopa
mov [edi],eax
add edi,4
loop .loopa
; Set all valid register accesses
setregw 2100h*4,reg2100w
setregw 2101h*4,reg2101w
setregw 2102h*4,reg2102w
setregw 2103h*4,reg2103w
setregw 2104h*4,reg2104w
setregw 2105h*4,reg2105w
setregw 2106h*4,reg2106w
setregw 2107h*4,reg2107w
setregw 2108h*4,reg2108w
setregw 2109h*4,reg2109w
setregw 210Ah*4,reg210Aw
setregw 210Bh*4,reg210Bw
setregw 210Ch*4,reg210Cw
setregw 210Dh*4,reg210Dw
setregw 210Eh*4,reg210Ew
setregw 210Fh*4,reg210Fw
setregw 2110h*4,reg2110w
setregw 2111h*4,reg2111w
setregw 2112h*4,reg2112w
setregw 2113h*4,reg2113w
setregw 2114h*4,reg2114w
setregw 2115h*4,reg2115w
setregw 2116h*4,reg2116w
setregw 2117h*4,reg2117w
setregw 2118h*4,reg2118
setregw 2119h*4,reg2119inc
setregw 211Ah*4,reg211Aw
setregw 211Bh*4,reg211Bw
setregw 211Ch*4,reg211Cw
setregw 211Dh*4,reg211Dw
setregw 211Eh*4,reg211Ew
setregw 211Fh*4,reg211Fw
setregw 2120h*4,reg2120w
setregw 2121h*4,reg2121w
setregw 2122h*4,reg2122w
setregw 2123h*4,reg2123w
setregw 2124h*4,reg2124w
setregw 2125h*4,reg2125w
setregw 2126h*4,reg2126w
setregw 2127h*4,reg2127w
setregw 2128h*4,reg2128w
setregw 2129h*4,reg2129w
setregw 212Ah*4,reg212Aw
setregw 212Bh*4,reg212Bw
setregw 212Ch*4,reg212Cw
setregw 212Dh*4,reg212Dw
setregw 212Eh*4,reg212Ew
setregw 212Fh*4,reg212Fw
setregw 2130h*4,reg2130w
setregw 2131h*4,reg2131w
setregw 2132h*4,reg2132w
setregw 2133h*4,reg2133w
setregw 2140h*4,reg2140w
setregw 2141h*4,reg2141w
setregw 2142h*4,reg2142w
setregw 2143h*4,reg2143w
setregw 2180h*4,reg2180w
setregw 2181h*4,reg2181w
setregw 2182h*4,reg2182w
setregw 2183h*4,reg2183w
setregw 4016h*4,reg4016w
setregw 4017h*4,reg4017w
setregw 4200h*4,reg4200w
setregw 4201h*4,reg4201w
setregw 4202h*4,reg4202w
setregw 4203h*4,reg4203w
setregw 4204h*4,reg4204w
setregw 4205h*4,reg4205w
setregw 4206h*4,reg4206w
setregw 4207h*4,reg4207w
setregw 4208h*4,reg4208w
setregw 4209h*4,reg4209w
setregw 420Ah*4,reg420Aw
setregw 420Bh*4,reg420Bw
setregw 420Ch*4,reg420Cw
setregw 420Dh*4,reg420Dw
setregw 420Eh*4,reg420Ew
setregw 4210h*4,reg4210w
setregw 4211h*4,reg4211w
setregw 4212h*4,reg4212w
setregw 4216h*4,reg4216w
setregw 4300h*4,reg43X0w
setregw 4301h*4,reg43X1w
setregw 4302h*4,reg43x2w
setregw 4303h*4,reg43x3w
setregw 4304h*4,reg43x4w
setregw 4305h*4,reg43x5w
setregw 4306h*4,reg43x6w
setregw 4307h*4,reg43x7w
setregw 4308h*4,reg43x8w
setregw 4309h*4,reg43x9w
setregw 430Ah*4,reg43XAw
setregw 430Bh*4,reg43XAw
setregw 430Ch*4,reg43XAw
setregw 430Dh*4,reg43XAw
setregw 430Eh*4,reg43XAw
setregw 430Fh*4,reg43XAw
setregw 4310h*4,reg43X0w
setregw 4311h*4,reg43X1w
setregw 4312h*4,reg43x2w
setregw 4313h*4,reg43x3w
setregw 4314h*4,reg43x4w
setregw 4315h*4,reg43x5w
setregw 4316h*4,reg43x6w
setregw 4317h*4,reg43x7w
setregw 4318h*4,reg43x8w
setregw 4319h*4,reg43x9w
setregw 431Ah*4,reg43XAw
setregw 431Bh*4,reg43XAw
setregw 431Ch*4,reg43XAw
setregw 431Dh*4,reg43XAw
setregw 431Eh*4,reg43XAw
setregw 431Fh*4,reg43XAw
setregw 4320h*4,reg43X0w
setregw 4321h*4,reg43X1w
setregw 4322h*4,reg43x2w
setregw 4323h*4,reg43x3w
setregw 4324h*4,reg43x4w
setregw 4325h*4,reg43x5w
setregw 4326h*4,reg43x6w
setregw 4327h*4,reg43x7w
setregw 4328h*4,reg43x8w
setregw 4329h*4,reg43x9w
setregw 432Ah*4,reg43XAw
setregw 432Bh*4,reg43XAw
setregw 432Ch*4,reg43XAw
setregw 432Dh*4,reg43XAw
setregw 432Eh*4,reg43XAw
setregw 432Fh*4,reg43XAw
setregw 4330h*4,reg43X0w
setregw 4331h*4,reg43X1w
setregw 4332h*4,reg43x2w
setregw 4333h*4,reg43x3w
setregw 4334h*4,reg43x4w
setregw 4335h*4,reg43x5w
setregw 4336h*4,reg43x6w
setregw 4337h*4,reg43x7w
setregw 4338h*4,reg43x8w
setregw 4339h*4,reg43x9w
setregw 433Ah*4,reg43XAw
setregw 433Bh*4,reg43XAw
setregw 433Ch*4,reg43XAw
setregw 433Dh*4,reg43XAw
setregw 433Eh*4,reg43XAw
setregw 433Fh*4,reg43XAw
setregw 4340h*4,reg43X0w
setregw 4341h*4,reg43X1w
setregw 4342h*4,reg43x2w
setregw 4343h*4,reg43x3w
setregw 4344h*4,reg43x4w
setregw 4345h*4,reg43x5w
setregw 4346h*4,reg43x6w
setregw 4347h*4,reg43x7w
setregw 4348h*4,reg43x8w
setregw 4349h*4,reg43x9w
setregw 434Ah*4,reg43XAw
setregw 434Bh*4,reg43XAw
setregw 434Ch*4,reg43XAw
setregw 434Dh*4,reg43XAw
setregw 434Eh*4,reg43XAw
setregw 434Fh*4,reg43XAw
setregw 4350h*4,reg43X0w
setregw 4351h*4,reg43X1w
setregw 4352h*4,reg43x2w
setregw 4353h*4,reg43x3w
setregw 4354h*4,reg43x4w
setregw 4355h*4,reg43x5w
setregw 4356h*4,reg43x6w
setregw 4357h*4,reg43x7w
setregw 4358h*4,reg43x8w
setregw 4359h*4,reg43x9w
setregw 435Ah*4,reg43XAw
setregw 435Bh*4,reg43XAw
setregw 435Ch*4,reg43XAw
setregw 435Dh*4,reg43XAw
setregw 435Eh*4,reg43XAw
setregw 435Fh*4,reg43XAw
setregw 4360h*4,reg43X0w
setregw 4361h*4,reg43X1w
setregw 4362h*4,reg43x2w
setregw 4363h*4,reg43x3w
setregw 4364h*4,reg43x4w
setregw 4365h*4,reg43x5w
setregw 4366h*4,reg43x6w
setregw 4367h*4,reg43x7w
setregw 4368h*4,reg43x8w
setregw 4369h*4,reg43x9w
setregw 436Ah*4,reg43XAw
setregw 436Bh*4,reg43XAw
setregw 436Ch*4,reg43XAw
setregw 436Dh*4,reg43XAw
setregw 436Eh*4,reg43XAw
setregw 436Fh*4,reg43XAw
setregw 4370h*4,reg43X0w
setregw 4371h*4,reg43X1w
setregw 4372h*4,reg43x2w
setregw 4373h*4,reg43x3w
setregw 4374h*4,reg43x4w
setregw 4375h*4,reg43x5w
setregw 4376h*4,reg43x6w
setregw 4377h*4,reg43x7w
setregw 4378h*4,reg43x8w
setregw 4379h*4,reg43x9w
setregw 437Ah*4,reg43XAw
setregw 437Bh*4,reg43XAw
setregw 437Ch*4,reg43XAw
setregw 437Dh*4,reg43XAw
setregw 437Eh*4,reg43XAw
setregw 437Fh*4,reg43XAw
cmp byte[SFXEnable],0
je .nosfx
call initsfxregsw
.nosfx
cmp byte[SA1Enable],0
je .nosa1
call initSA1regsw
.nosa1
cmp byte[SDD1Enable],0
je .nosdd1
call SDD1Reset
.nosdd1
cmp byte[SPC7110Enable],0
je .nospc7110
call SPC7110Reset
.nospc7110
cmp byte[RTCEnable],0
je .nortc
call RTCReset2
.nortc
ret
; video memory change buffer for caching (65536/16=4096)
;vidmemch2 times 4096 db 0
;vidmemch4 times 4096 db 0
;vidmemch8 times 4096 db 0
NEWSYM unpackfunct
mov ebx,[oamaddr]
mov [oamaddrt],bx
mov ax,[xa]
mov [xat],ax
mov al,[xdb]
mov [xdbt],al
mov al,[xpb]
mov [xpbt],al
mov ax,[xs]
mov [xst],ax
mov ax,[xd]
mov [xdt],ax
mov ax,[xx]
mov [xxt],ax
mov ax,[xy]
mov [xyt],ax
ret
NEWSYM repackfunct
; Global/Echo Volumes
mov al,[DSPMem+0Ch]
call WDSPReg0C
mov al,[DSPMem+1Ch]
call WDSPReg1C
mov al,[DSPMem+2Ch]
call WDSPReg2C
mov al,[DSPMem+3Ch]
call WDSPReg3C
; Echo Values
mov al,[DSPMem+7Dh]
call WDSPReg7D
mov al,[DSPMem+0Dh]
call WDSPReg0D
; FIR Filter Values
mov al,[DSPMem+00Fh]
call WDSPReg0F
mov al,[DSPMem+01Fh]
call WDSPReg1F
mov al,[DSPMem+02Fh]
call WDSPReg2F
mov al,[DSPMem+03Fh]
call WDSPReg3F
mov al,[DSPMem+04Fh]
call WDSPReg4F
mov al,[DSPMem+05Fh]
call WDSPReg5F
mov al,[DSPMem+06Fh]
call WDSPReg6F
mov al,[DSPMem+07Fh]
call WDSPReg7F
; Noise
mov al,[DSPMem+6Ch]
call WDSPReg6C
mov al,[DSPMem+3Dh]
call WDSPReg3D
mov bx,[bg1ptrb]
sub bx,[bg1ptr]
mov [bg1ptrx],bx
mov bx,[bg1ptrc]
sub bx,[bg1ptr]
mov [bg1ptry],bx
mov bx,[bg2ptrb]
sub bx,[bg2ptr]
mov [bg2ptrx],bx
mov bx,[bg2ptrc]
sub bx,[bg2ptr]
mov [bg2ptry],bx
mov bx,[bg3ptrb]
sub bx,[bg3ptr]
mov [bg3ptrx],bx
mov bx,[bg3ptrc]
sub bx,[bg3ptr]
mov [bg3ptry],bx
mov bx,[bg4ptrb]
sub bx,[bg4ptr]
mov [bg4ptrx],bx
mov bx,[bg4ptrc]
sub bx,[bg4ptr]
mov [bg4ptry],bx
; 16x16 tiles
mov bl,[bgtilesz]
shl bl,4
mov dword[BG116x16t],0
add bl,bl
adc byte[BG416x16t],0
add bl,bl
adc byte[BG316x16t],0
add bl,bl
adc byte[BG216x16t],0
add bl,bl
adc byte[BG116x16t],0
mov ebx,[oamaddrt]
and ebx,0FFFFh
mov [oamaddr],ebx
mov ax,[xat]
mov [xa],ax
mov al,[xdbt]
mov [xdb],al
mov al,[xpbt]
mov [xpb],al
mov ax,[xst]
mov [xs],ax
mov ax,[xdt]
mov [xd],ax
mov ax,[xxt]
mov [xx],ax
mov ax,[xyt]
mov [xy],ax
cmp byte[vramincby8on],1
je near .incby8
mov ebx,[regptw]
cmp byte[vramincr],1
je .from2118
mov dword[ebx+2118h*4],reg2118
mov dword[ebx+2119h*4],reg2119inc
ret
.from2118
mov dword[ebx+2118h*4],reg2118inc
mov dword[ebx+2119h*4],reg2119
ret
.incby8
mov ebx,[regptw]
cmp byte[vramincr],1
je .from2118b
mov dword[ebx+2118h*4],reg2118inc8
mov dword[ebx+2119h*4],reg2119inc8inc
ret
.from2118b
mov dword[ebx+2118h*4],reg2118inc8inc
mov dword[ebx+2119h*4],reg2119inc8
ret
;*******************************************************
; Registers Note : restore AH, ECX, ESI, EDI, *S & DX
;*******************************************************
; Screen display register
reg2100w:
mov [vidbright],al
and byte[vidbright],0Fh
mov [forceblnk],al
and byte[forceblnk],80h
ret
NEWSYM prevoamptr, db 0
; OAM size register
reg2101w:
cmp byte[prevoamptr],0FFh
je .noskip
cmp byte[prevoamptr],al
je near .noproc
.noskip
mov byte[prevoamptr],al
xor ebx,ebx
mov bl,al
and bl,03h
shl bx,14
mov [objptr],bx
mov [objptrn],bx
xor ebx,ebx
mov bl,al
and bl,18h
shr bl,3
shl bx,13
add [objptrn],bx
xor ebx,ebx
mov bl,al
shr bl,5
push eax
mov byte[NextLineCache],1
mov al,[.objsize1+ebx]
mov [objsize1],al
mov al,[.objsize2+ebx]
mov [objsize2],al
mov al,[.objmovs1+ebx]
mov [objmovs1],al
mov al,[.objmovs2+ebx]
mov [objmovs2],al
mov ax,[.objadds1+ebx*2]
mov [objadds1],ax
mov ax,[.objadds2+ebx*2]
mov [objadds2],ax
pop eax
.noproc
ret
.objsize1 db 1,1,1,4,4,16,1,1
.objsize2 db 4,16,64,16,64,64,4,4
.objmovs1 db 2,2,2,2,2,4,2,2
.objmovs2 db 2,4,8,4,8,8,2,2
.objadds1 dw 14,14,14,14,14,12,14,14
.objadds2 dw 14,12,8,12,8,8,14,14
; OAM address register
reg2102w:
shr word[oamaddr],1
mov [oamaddr],al
shl word[oamaddr],1
mov bx,[oamaddr]
mov [oamaddrs],bx
cmp byte[nexthprior],1
je .priorset
mov byte[objhipr],0
jmp .cachespr
.priorset
mov bl,al
cmp bl,80h
jae .noreset
; xor bl,bl
.noreset
mov [objhipr],bl
mov byte[nexthprior],0
.cachespr
ret
; OAM address register
reg2103w:
mov bl,al
and bl,01h
shr word[oamaddr],1
mov [oamaddr+1],bl
shl word[oamaddr],1
mov bx,[oamaddr]
mov [oamaddrs],bx
test al,80h
jnz .hipri
mov byte[NextLineCache],1
ret
.hipri
mov byte[nexthprior],1
mov byte[NextLineCache],1
ret
; OAM data register
reg2104w:
mov ebx,[oamaddr]
inc dword[oamaddr]
cmp ebx,544
je .overflow
mov [oamram+ebx],al
ret
.overflow
xor ebx,ebx
mov dword[oamaddr],1
mov [oamram+ebx],al
ret
; Screen mode register
reg2105w:
mov bl,al
and bl,00000111b
mov [bgmode],bl
mov bl,al
shr bl,3
and bl,01h
mov [bg3highst],bl
mov bl,al
shr bl,4
mov [bgtilesz],bl
mov bl,al
mov dword[BG116x16t],0
add bl,bl
adc byte[BG416x16t],0
add bl,bl
adc byte[BG316x16t],0
add bl,bl
adc byte[BG216x16t],0
add bl,bl
adc byte[BG116x16t],0
ret
; Screen pixelation register
reg2106w:
mov bl,al
and bl,0Fh
mov [mosaicon],bl
mov bl,al
shr bl,4
mov [mosaicsz],bl
ret
; BG1 VRAM location register
reg2107w:
xor ebx,ebx
mov bl,al
shr bl,2
shl bx,11
mov [bg1ptr],bx
mov [bg1ptrb],bx
mov [bg1ptrc],bx
mov [bg1ptrd],bx
mov dword[bg1ptrx],0
mov dword[bg1ptry],0
mov bl,al
and bl,00000011b
mov [bg1scsize],bl
cmp bl,1
jne .skipa
add word[bg1ptrb],800h
add word[bg1ptrd],800h
mov dword[bg1ptrx],800h
.skipa
cmp bl,2
jne .skipb
add word[bg1ptrc],800h
add word[bg1ptrd],800h
mov dword[bg1ptry],800h
.skipb
cmp bl,3
jne .skipc
add word[bg1ptrb],800h
add word[bg1ptrc],1000h
add word[bg1ptrd],1800h
mov dword[bg1ptrx],800h
mov dword[bg1ptry],1000h
.skipc
ret
; BG2 VRAM location register
reg2108w:
xor ebx,ebx
mov bl,al
shr bl,2
shl bx,11
mov [bg2ptr],bx
mov [bg2ptrb],bx
mov [bg2ptrc],bx
mov [bg2ptrd],bx
mov dword[bg2ptrx],0
mov dword[bg2ptry],0
mov bl,al
and bl,00000011b
mov [bg2scsize],bl
cmp bl,1
jne .skipa
add word[bg2ptrb],800h
add word[bg2ptrd],800h
mov dword[bg2ptrx],800h
.skipa
cmp bl,2
jne .skipb
add word[bg2ptrc],800h
add word[bg2ptrd],800h
mov dword[bg2ptry],800h
.skipb
cmp bl,3
jne .skipc
add word[bg2ptrb],800h
add word[bg2ptrc],1000h
add word[bg2ptrd],1800h
mov dword[bg2ptrx],800h
mov dword[bg2ptry],1000h
.skipc
ret
; BG3 VRAM location register
reg2109w:
xor ebx,ebx
mov bl,al
shr bl,2
shl bx,11
mov [bg3ptr],bx
mov [bg3ptrb],bx
mov [bg3ptrc],bx
mov [bg3ptrd],bx
mov dword[bg3ptrx],0
mov dword[bg3ptry],0
mov bl,al
and bl,00000011b
mov [bg3scsize],bl
cmp bl,1
jne .skipa
add word[bg3ptrb],800h
add word[bg3ptrd],800h
mov dword[bg3ptrx],800h
.skipa
cmp bl,2
jne .skipb
add word[bg3ptrc],800h
add word[bg3ptrd],800h
mov dword[bg3ptry],800h
.skipb
cmp bl,3
jne .skipc
add word[bg3ptrb],800h
add word[bg3ptrc],1000h
add word[bg3ptrd],1800h
mov dword[bg3ptrx],800h
mov dword[bg3ptry],1000h
.skipc
ret
; BG4 VRAM location register
reg210Aw:
xor ebx,ebx
mov bl,al
shr bl,2
shl bx,11
mov [bg4ptr],bx
mov [bg4ptrb],bx
mov [bg4ptrc],bx
mov [bg4ptrd],bx
mov dword[bg4ptrx],0
mov dword[bg4ptry],0
mov bl,al
and bl,00000011b
mov [bg4scsize],bl
cmp bl,1
jne .skipa
add word[bg4ptrb],800h
add word[bg4ptrd],800h
mov dword[bg4ptrx],800h
.skipa
cmp bl,2
jne .skipb
add word[bg4ptrc],800h
add word[bg4ptrd],800h
mov dword[bg4ptry],800h
.skipb
cmp bl,3
jne .skipc
add word[bg4ptrb],800h
add word[bg4ptrc],1000h
add word[bg4ptrd],1800h
mov dword[bg4ptrx],800h
mov dword[bg4ptry],1000h
.skipc
ret
; BG1 & BG2 VRAM location register
reg210Bw:
xor ebx,ebx
mov bl,al
and bl,0Fh
shl bx,13
mov [bg1objptr],bx
mov bl,al
shr bl,4
shl bx,13
mov [bg2objptr],bx
ret
; BG3 & BG4 VRAM location register
reg210Cw:
xor ebx,ebx
mov bl,al
and bl,0Fh
shl bx,13
mov [bg3objptr],bx
mov bl,al
shr bl,4
shl bx,13
mov [bg4objptr],bx
ret
; BG1 horizontal scroll register
reg210Dw:
mov bl,byte[bg1scrolx+1]
mov byte[bg1scrolx],bl
mov byte[bg1scrolx+1],al
ret
; BG1 vertical scroll register
reg210Ew:
mov bl,byte[bg1scroly+1]
add bl,[bgscroltemp]
mov byte[bg1scroly],bl
mov byte[bg1scroly+1],al
ret
bgscroltemp db 0
; BG2 horizontal scroll register
reg210Fw:
mov bl,byte[bg2scrolx+1]
mov byte[bg2scrolx],bl
mov byte[bg2scrolx+1],al
ret
; BG2 vertical scroll register
reg2110w:
mov bl,byte[bg2scroly+1]
add bl,[bgscroltemp]
mov byte[bg2scroly],bl
mov byte[bg2scroly+1],al
ret
; BG3 horizontal scroll register
reg2111w:
mov bl,byte[bg3scrolx+1]
mov byte[bg3scrolx],bl
mov byte[bg3scrolx+1],al
ret
; BG3 vertical scroll register
reg2112w:
mov bl,byte[bg3scroly+1]
add bl,[bgscroltemp]
mov byte[bg3scroly],bl
mov byte[bg3scroly+1],al
ret
; BG4 horizontal scroll register
reg2113w:
mov bl,byte[bg4scrolx+1]
mov byte[bg4scrolx],bl
mov byte[bg4scrolx+1],al
ret
; BG4 vertical scroll register
reg2114w:
mov bl,byte[bg4scroly+1]
add bl,[bgscroltemp]
mov byte[bg4scroly],bl
mov byte[bg4scroly+1],al
ret
; Video port control
reg2115w:
and al,11111111b
mov [vraminctype],al
mov bl,al
and bl,00000011b
cmp bl,0
jne .skip1
mov word[addrincr],2
.skip1
cmp bl,1
jne .skip2
mov word[addrincr],64
.skip2
cmp bl,2
jne .skip3
mov word[addrincr],256
.skip3
cmp bl,3
jne .skip4
mov word[addrincr],256
.skip4
mov bl,al
mov byte[vramincby8on],0
and bl,00001100b
jz near .noincby8
mov byte[vramincby8on],1
cmp bl,4
jne .nextinc8
mov byte[vramincby8left],64-1
mov byte[vramincby8totl],5
mov word[vramincby8ptri],65535-511
mov word[vramincby8var],256+128+64
.nextinc8
cmp bl,8
jne .nextinc8b
mov byte[vramincby8left],128-1
mov byte[vramincby8totl],6
mov word[vramincby8ptri],65535-1023
mov word[vramincby8var],512+256+128
.nextinc8b
cmp bl,12
jne .nextinc8c
mov byte[vramincby8left],256-1
mov byte[vramincby8totl],7
mov word[vramincby8ptri],65535-2047
mov word[vramincby8var],1024+512+256
.nextinc8c
mov ebx,[regptw]
test al,80h
jz .from2118
mov dword[ebx+2118h*4],reg2118inc8
mov dword[ebx+2119h*4],reg2119inc8inc
mov byte[vramincr],0
jmp .from2119
.from2118
mov dword[ebx+2118h*4],reg2118inc8inc
mov dword[ebx+2119h*4],reg2119inc8
mov byte[vramincr],1
.from2119
ret
.noincby8
mov ebx,[regptw]
test al,80h
jz .from2118b
mov dword[ebx+2118h*4],reg2118
mov dword[ebx+2119h*4],reg2119inc
mov byte[vramincr],0
jmp .from2119b
.from2118b
mov dword[ebx+2118h*4],reg2118inc
mov dword[ebx+2119h*4],reg2119
mov byte[vramincr],1
.from2119b
ret
; Video port address (Low)
reg2116w:
shr word[vramaddr],1
mov byte[vramaddr],al
shl word[vramaddr],1
mov byte[vramread],0
ret
; Video port address (High)
reg2117w:
shr word[vramaddr],1
mov byte[vramaddr+1],al
shl word[vramaddr],1
mov byte[vramread],0
ret
; Video port data (Low)
reg2118:
cmp dword[vramaddr],0E000h
jb .skip
mov byte[debstop],1
.skip
mov ebx,[vramaddr]
; cmp [vrama+ebx],al
; je .nochange
mov [vrama+ebx],al
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange
ret
reg2118inc:
mov ebx,[vramaddr]
; cmp [vrama+ebx],al
; je .nochange
mov [vrama+ebx],al
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange
mov ebx,[addrincr]
add [vramaddr],bx
ret
reg2118inc8:
push ecx
xor ecx,ecx
mov ebx,[vramaddr]
mov cl,[vramincby8left]
and ebx,ecx
shl ebx,3
push eax
mov eax,[vramaddr]
and ax,[vramincby8var]
mov cl,[vramincby8totl]
shr eax,cl
add ebx,eax
mov eax,[vramaddr]
and ax,[vramincby8ptri]
add ebx,eax
pop eax
pop ecx
add ebx,[vram]
; cmp [ebx],al
; je .nochange2
mov [ebx],al
sub ebx,[vram]
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange2
ret
reg2118inc8inc:
push ecx
xor ecx,ecx
mov ebx,[vramaddr]
mov cl,[vramincby8left]
and ebx,ecx
shl ebx,3
push eax
mov eax,[vramaddr]
and ax,[vramincby8var]
mov cl,[vramincby8totl]
shr eax,cl
add ebx,eax
mov eax,[vramaddr]
and ax,[vramincby8ptri]
add ebx,eax
pop eax
pop ecx
add ebx,[vram]
; cmp [ebx],al
; je .nochange2
mov [ebx],al
sub ebx,[vram]
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange2
mov ebx,[addrincr]
add [vramaddr],bx
ret
reg2119:
cmp dword[vramaddr],0E000h
jb .skip
mov byte[debstop],1
.skip
mov ebx,[vramaddr]
; cmp [vrama+ebx+1],al
; je .nochange
mov [vrama+ebx+1],al
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange
ret
reg2119inc:
mov ebx,[vramaddr]
; cmp [vrama+ebx+1],al
; je .nochange
mov [vrama+ebx+1],al
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange
mov ebx,[addrincr]
add [vramaddr],bx
ret
reg2119inc8:
push ecx
xor ecx,ecx
mov ebx,[vramaddr]
mov cl,[vramincby8left]
and ebx,ecx
shl ebx,3
push eax
mov eax,[vramaddr]
and ax,[vramincby8var]
mov cl,[vramincby8totl]
shr eax,cl
add ebx,eax
mov eax,[vramaddr]
and ax,[vramincby8ptri]
add ebx,eax
pop eax
pop ecx
; cmp [vrama+ebx+1],al
; je .nochange2
mov [vrama+ebx+1],al
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange2
ret
reg2119inc8inc:
push ecx
xor ecx,ecx
mov ebx,[vramaddr]
mov cl,[vramincby8left]
and ebx,ecx
shl ebx,3
push eax
mov eax,[vramaddr]
and ax,[vramincby8var]
mov cl,[vramincby8totl]
shr eax,cl
add ebx,eax
mov eax,[vramaddr]
and ax,[vramincby8ptri]
add ebx,eax
pop eax
pop ecx
; cmp [vrama+ebx+1],al
; je .nochange2
mov [vrama+ebx+1],al
shr ebx,4
mov byte[vidmemch2+ebx],1
mov byte[vidmemch4+ebx],1
mov byte[vidmemch8+ebx],1
.nochange2
mov ebx,[addrincr]
add [vramaddr],bx
ret
; MODE7 settings register
reg211Aw:
mov [mode7set],al
ret
NEWSYM multchange, db 1
; COS (COSINE) rotate angle / X Expansion
reg211Bw:
mov bl,[mode7A+1]
mov [mode7A],bl
mov [mode7A+1],al
mov byte[multchange],1
ret
; SIN (SIN) rotate angle / X Expansion & Complement Multiplication Start
reg211Cw:
mov bl,[mode7B+1]
mov [mode7B],bl
mov [mode7B+1],al
mov byte[multchange],1
ret
; SIN (SIN) rotate angle / Y Expansion
reg211Dw:
mov bl,[mode7C+1]
mov [mode7C],bl
mov [mode7C+1],al
ret
; COS (COSINE) rotate angle / Y Expansion
reg211Ew:
mov bl,[mode7D+1]
mov [mode7D],bl
mov [mode7D+1],al
ret
; Center position X (13-bit data only)
reg211Fw:
mov bl,[mode7X0+1]
mov [mode7X0],bl
mov [mode7X0+1],al
ret
; Center position Y (13-bit data only)
reg2120w:
mov bl,[mode7Y0+1]
mov [mode7Y0],bl
mov [mode7Y0+1],al
ret
; Colour # (or palette) selection register
reg2121w:
xor bh,bh
mov bl,al
shl bx,1
mov [cgaddr],bx
and word[cgaddr],01FFh
ret
; Colour data register
reg2122w:
xor ebx,ebx
mov bx,[cgaddr]
cmp [cgram+ebx],al
je .nomod
mov [cgram+ebx],al
mov byte[cgmod],1
.nomod
inc word[cgaddr]
and word[cgaddr],01FFh
ret
; Window mask settings register [W12SEL]
reg2123w:
mov bl,al
and bl,0Fh
mov [winbg1en],bl
mov bl,al
shr bl,4
mov [winbg2en],bl
ret
; Window mask settings register [W34SEL]
reg2124w:
mov bl,al
and bl,0Fh
mov [winbg3en],bl
mov bl,al
shr bl,4
mov [winbg4en],bl
ret
; Window mask settings register [WOBJSEL]
reg2125w:
mov bl,al
and bl,0Fh
mov [winobjen],bl
mov bl,al
shr bl,4
mov [wincolen],bl
ret
; Window 1 left position register
reg2126w:
mov [winl1],al
ret
; Window 1 right position register
reg2127w:
mov [winr1],al
ret
; Window 2 left position register
reg2128w:
mov [winl2],al
ret
; Window 2 right position register
reg2129w:
mov [winr2],al
ret
; Mask logic settings for Window 1 & 2 per screen
reg212Aw:
mov [winlogica],al
ret
; Mask logic settings for Colour Windows & OBJ Windows
reg212Bw:
mov [winlogicb],al
ret
; Main screen designation
reg212Cw:
mov [scrnon],al
ret
; Sub-screen designation
reg212Dw:
mov [scrnon+1],al
ret
; Window mask main screen designation register
reg212Ew:
mov [winenabm],al
ret
; Window mask sub screen designation register
reg212Fw:
mov [winenabs],al
ret
; Fixed color addition or screen addition register
reg2130w:
mov [scaddset],al
ret
; Addition/subtraction for screens, BGs, & OBJs
reg2131w:
mov [scaddtype],al
ret
; Fixed colour data for fixed colour +/-
reg2132w:
mov bl,al
and bl,1Fh
test al,20h
jz .nored
mov [coladdr],bl
.nored
test al,40h
jz .nogreen
mov [coladdg],bl
.nogreen
test al,80h
jz .noblue
mov [coladdb],bl
.noblue
ret
; Screen mode/video select register
reg2133w:
mov [interlval],al
and byte[interlval],41h
test al,04h
jnz .line239
mov word[resolutn],224
ret
.line239
mov word[resolutn],239
ret
NEWSYM CleartheScreen, db 0
; Sound Register #1
reg2140w:
mov byte[sndwrit],1
cmp byte[nmistatus],2
jne .n
mov byte[nmirept],0
.n
mov byte[spcRam+0F4h],al
inc dword[SPC700write]
reenablespc
ret
; cmp dword[cycpbl],0FFFFh
; ja .spcreset
; ret
;.spcreset
; mov dword[cycpbl],100
; ret
; Sound Register #2
reg2141w:
mov byte[sndwrit],1
mov byte[spcRam+0F5h],al
inc dword[SPC700write]
reenablespc
ret
; cmp dword[cycpbl],0FFFFh
; ja .spcreset
; ret
;.spcreset
; mov dword[cycpbl],100
; ret
; Sound Register #3
reg2142w:
mov byte[sndwrit],1
mov byte[spcRam+0F6h],al
inc dword[SPC700write]
reenablespc
ret
; cmp dword[cycpbl],0FFFFh
; ja .spcreset
; ret
;.spcreset
; mov dword[cycpbl],100
; ret
; Sound Register #4
reg2143w:
mov byte[sndwrit],1
mov byte[spcRam+0F7h],al
inc dword[SPC700write]
reenablespc
ret
; cmp dword[cycpbl],0FFFFh
; ja .spcreset
; ret
;.spcreset
; mov dword[cycpbl],100
; ret
; Read/write WRAM register
reg2180w:
mov ebx,[wramrwadr]
add ebx,[wramdata]
mov [ebx],al
inc dword[wramrwadr]
and dword[wramrwadr],01FFFFh
ret
; WRAM data register (low byte)
reg2181w:
mov byte[wramrwadr],al
ret
; WRAM data register (middle byte)
reg2182w:
mov byte[wramrwadr+1],al
ret
; WRAM data register (high byte)
reg2183w:
mov bl,al
and bl,01h
mov byte[wramrwadr+2],bl
ret
; Joystick 1 & 2 status bytes
NEWSYM MultiTapStat, db 0
reg4016w:
test byte[INTEnab],1
jnz .nointenab
mov ebx,[JoyAOrig]
mov [JoyANow],ebx
mov ebx,[JoyBOrig]
mov [JoyBNow],ebx
mov ebx,[JoyCOrig]
mov [JoyCNow],ebx
mov ebx,[JoyDOrig]
mov [JoyDNow],ebx
mov ebx,[JoyEOrig]
mov [JoyENow],ebx
cmp al,01h
jne .noreset
or byte[MultiTapStat],1
ret
.noreset
and byte[MultiTapStat],0FEh
ret
.nointenab
cmp al,01h
jne .noone
or byte[MultiTapStat],1
or byte[JoyCRead],2
ret
.noone
and byte[MultiTapStat],0FEh
cmp al,0
jne .nozero
or byte[JoyCRead],1
cmp byte[JoyCRead],3
jne .nozero
.resetports
mov ebx,[JoyAOrig]
mov [JoyANow],ebx
mov ebx,[JoyBOrig]
mov [JoyBNow],ebx
mov ebx,[JoyCOrig]
mov [JoyCNow],ebx
mov ebx,[JoyDOrig]
mov [JoyDNow],ebx
mov ebx,[JoyEOrig]
mov [JoyENow],ebx
.nozero
ret
; Joystick 1 & 2 status bytes
reg4017w:
ret
; Counter enable
reg4200w:
mov byte[INTEnab],al
ret
; Programmable I/O port (out-port)
reg4201w:
mov bl,al
and bl,80h
and byte[MultiTapStat],07Fh
or byte[MultiTapStat],bl
ret
; Multiplicand 'A'
reg4202w:
mov [multa],al
ret
; Multiplier 'B'
reg4203w:
push edx
push eax
xor ah,ah
xor bh,bh
mov bl,[multa]
mul bx
mov [multres],ax
pop eax
pop edx
ret
; Dividend C (Low)
reg4204w:
mov [diva],al
ret
; Dividend C (High)
reg4205w:
mov [diva+1],al
ret
; Divisor B
reg4206w:
cmp al,0
je .divby0
push eax
push edx
xor ebx,ebx
xor edx,edx
mov bl,al
mov ax,[diva]
div bx
mov [divres],ax
mov [multres],dx
pop edx
pop eax
ret
.divby0
push eax
mov word[divres],0FFFFh
mov ax,[diva]
mov [multres],ax
pop eax
ret
DetermineHIRQExec
cmp byte[HIRQSkip],1
je near .ret
add dh,[HIRQCycNext]
mov byte[HIRQCycNext],0
mov byte[HIRQNextExe],0
push eax
push ecx
push edx
mov ax,[HIRQLoc]
xor ecx,ecx
mov cl,[cycpl]
mul cx
mov cx,340
div cx
mov cl,[cycpl]
sub cl,al
pop edx
cmp dh,cl
ja .hirqokay
.notokay
pop ecx
pop eax
.ret
ret
.hirqokay
sub dh,cl
add dh,30
mov [HIRQCycNext],cl
mov byte[HIRQNextExe],1
pop ecx
pop eax
ret
; Video horizontal IRQ beam position/pointer (Low)
reg4207w:
cmp [HIRQLoc],al
je .nohirqc
mov [HIRQLoc],al
mov bx,[curypos]
cmp bx,[VIRQLoc]
je near DetermineHIRQExec
.nohirqc
ret
; Video horizontal IRQ beam position/pointer (High)
reg4208w:
cmp [HIRQLoc+1],al
je .nohirqc
mov [HIRQLoc+1],al
mov bx,[curypos]
cmp bx,[VIRQLoc]
je near DetermineHIRQExec
.nohirqc
ret
; Video vertical IRQ beam position/pointer (Low)
reg4209w:
mov [VIRQLoc],al
; mov bx,[curypos]
cmp byte[HIRQNextExe],1
je .nohirq
ret
.nohirq
mov bx,[curypos]
cmp bx,[VIRQLoc]
je .nocancelhirq
add dh,[HIRQCycNext]
mov byte[HIRQCycNext],0
mov byte[HIRQNextExe],0
.nocancelhirq
ret
; Video vertical IRQ beam position/pointer (High)
reg420Aw:
and al,01h
mov [VIRQLoc+1],al
cmp byte[HIRQNextExe],1
je .nohirq
ret
.nohirq
mov bx,[curypos]
cmp bx,[VIRQLoc]
je .nocancelhirq
add dh,[HIRQCycNext]
mov byte[HIRQCycNext],0
mov byte[HIRQNextExe],0
.nocancelhirq
ret
; Cycle speed register
reg420Dw:
test al,01h
jnz .speed358
; 2.68 Mhz
mov al,[opexec268]
mov byte[cycpl],al ; 2.68 Mhz
mov al,[opexec268cph]
mov byte[cycphb],al ; 2.68 Mhz
and byte[xirqb],00h
mov bl,[cycpb268]
mov byte[cycpblt],bl ; percentage of CPU/SPC to run
ret
.speed358
; 3.58 Mhz
mov al,[opexec358]
mov byte[cycpl],al ; 3.58 Mhz
mov al,[opexec358cph]
mov byte[cycphb],al ; 3.58 Mhz
or byte[xirqb],80h
mov bl,[cycpb358]
mov byte[cycpblt],bl ; percentage of CPU/SPC to run
ret
; ???
reg420Ew:
ret
; NMI Check register
reg4210w:
ret
; Video IRQ register
reg4211w:
ret
; Status register
reg4212w:
ret
; Product of Multiplication Result or Remainder of Divide Result (Low)
reg4216w:
ret
; DMA Control register
reg43X0w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
mov byte[hdmarestart],1
ret
; DMA Destination register
reg43X1w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
mov byte[hdmarestart],1
ret
; Source address (Low)
reg43x2w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
; mov [dmadata+ebx+6],al
ret
; Source address (High)
reg43x3w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
; mov [dmadata+ebx+6],al
ret
; Source bank address
reg43x4w
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
; DMA transfer size & HDMA address register (Low)
reg43x5w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
; DMA transfer size & HDMA address register (High)
reg43x6w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
; DMA transfer size & HDMA address register (Bank)
reg43x7w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
; Table Address of A-BUS by DMA < A2 Table Address (Low)
reg43x8w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
; Table Address of A-BUS by DMA < A2 Table Address (High)
reg43x9w:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
; Number of lines for HDMA transfer
reg43XAw:
xor ebx,ebx
mov bx,cx
sub bx,4300h
mov [dmadata+ebx],al
ret
regINVALIDw: ; Invalid Register
ret
regexiter:
mov bl,[xpb]
mov ax,[xpc]
test ax,8000h
jz .loweraddr2
mov eax,[snesmmap+ebx*4]
jmp .nextaddr
.loweraddr2
mov eax,[snesmap2+ebx*4]
.nextaddr
mov ebx,esi
sub ebx,eax ; subtract program counter by address
mov [.invaddr],bx
mov bl,[xpb]
mov [.invbank],bl
mov al,[previdmode]
mov ah,0
int 10h
mov byte[invalid],1
mov [invreg],cx
mov ah,9
mov edx,.invalidreg
int 21h
xor eax,eax
mov ax,[invreg]
call printhex
mov ah,9
mov edx,.invalidreg
int 21h
xor eax,eax
mov al,[.invbank]
call printhex8
mov ax,[.invaddr]
call printhex
mov ah,2
mov dl,13
int 21h
mov ah,2
mov dl,10
int 21h
mov eax,[numinst]
call printnum
jmp DosExit
.invalidreg db 'Invalid Write Register : $'
.invalidaddr db ' at address $'
.invbank db 0
.invaddr db 0