newgfx2.mac

linux下的任天堂模拟器代码。供大家参考。

    jz %%drawd2f
    mov [edi],bh
%%drawd2f
    jmp %5

%%flipypart
    add ecx,[flipyposng]
    test word[vrama+eax],4000h
    jnz near %%flipxypart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdm
    add ebx,edx
    test bl,%8
    jz %%drawam
    mov [edi],bl
%%drawam
    test bh,%8
    jz %%drawbm
    mov [edi+1],bh
%%drawbm
    shr ebx,16
    test bl,%8
    jz %%drawcm
    mov [edi+2],bl
%%drawcm
    test bh,%8
    jz %%drawdm
    mov [edi+3],bh
%%drawdm
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2m
    add ebx,edx
    test bl,%8
    jz %%drawa2m
    mov [edi+4],bl
%%drawa2m
    test bh,%8
    jz %%drawb2m
    mov [edi+5],bh
%%drawb2m
    shr ebx,16
    test bl,%8
    jz %%drawc2m
    mov [edi+6],bl
%%drawc2m
    test bh,%8
    jz %%drawd2m
    mov [edi+7],bh
%%drawd2m
    jmp %5

%%flipxypart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdfm
    add ebx,edx
    test bl,%8
    jz %%drawafm
    mov [edi+7],bl
%%drawafm
    test bh,%8
    jz %%drawbfm
    mov [edi+6],bh
%%drawbfm
    shr ebx,16
    test bl,%8
    jz %%drawcfm
    mov [edi+5],bl
%%drawcfm
    test bh,%8
    jz %%drawdfm
    mov [edi+4],bh
%%drawdfm
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2fm
    add ebx,edx
    test bl,%8
    jz %%drawa2fm
    mov [edi+3],bl
%%drawa2fm
    test bh,%8
    jz %%drawb2fm
    mov [edi+2],bh
%%drawb2fm
    shr ebx,16
    test bl,%8
    jz %%drawc2fm
    mov [edi+1],bl
%%drawc2fm
    test bh,%8
    jz %%drawd2fm
    mov [edi],bh
%%drawd2fm
%5
    inc dword[bg1totng+%9*4]
    add word[ofsmmptr],2
    add word[ofsmtptr],2
    mov ax,[ofsmmptr]
    mov ebx,[yposngom]
    mov edx,[flipyposngom]
    mov [yposng],ebx
    mov [flipyposng],edx
    add edi,8
    test eax,03Fh
    jz near %%tileadd
%%next
    mov ebx,[ofsmcptr]
    add ebx,[ofsmcptr2]
    add dword[ofshvaladd],8
    test dword[ebx-40h],8000h
    jz near %%noofsm
    test dword[ebx-40h],2000h << %9
    jz %%noofsm
    mov ebx,[ebx-40h]
    mov ax,[ofsmtptr]
    and ebx,3FFh
    add ebx,[ofsmcyps]
    test ebx,100h
    jz %%noupper
    add ax,[ofsmady]
%%noupper
    and ebx,0FFh
    mov edx,ebx
    shr ebx,3
    and edx,07h
    shl ebx,6
    shl edx,3
    add ax,bx
    mov [yposng],edx
    xor edx,38h
    mov [flipyposng],edx
%%noofsm
    mov ebx,[ofsmcptr]
    add ebx,[ofsmcptr2]
    add dword[ofsmcptr2],2
    and dword[ofsmcptr2],3Fh
    test dword[ebx-40h],8000h
    jnz near %%noofsmh
    test dword[ebx-40h],2000h << %9
    jz %%noofsmh
    mov ebx,[ebx-40h]
    sub ax,[ofsmtptr]
    add ax,[ofsmtptrs]
    add ebx,[ofshvaladd]
    test ebx,100h
    jz %%noleft
    add ax,[ofsmadx]
%%noleft
    and ebx,0F8h
    shr ebx,2
    add ax,bx
%%noofsmh
    dec byte[tleftn]
    jnz near %4
%%fin
    pop ebx
    cmp byte[curmosaicsz],1
    jne near domosaicng
    ret
%%docache
    call %3
    jmp %%returnfromcache
%%tileadd
    mov bx,[bgtxadd]
    add ax,bx
    add [ofsmmptr],bx
    add word[ofsmtptr],bx
    jmp %%next
%endmacro


%macro drawlinengom 8
    ; tile value : bit 15 = flipy, bit 14 = flipx, bit 13 = priority value
    ;              bit 10-12 = palette, 0-9=tile#
    mov ebx,[cbgval]
    mov dl,ch
    inc dword[bg1drwng+ebx*4]
    and ecx,3FFh
    and edx,1Fh
    add ecx,[ngptrdat2]
    mov edx,[%6+edx*4]
    %7
    jnz near %%docache
%%returnfromcache
    cmp byte[%1+ecx],2
    je near %5
    cmp byte[%1+ecx],0
    je near %%parttile
    %2
    ; start drawing from ecx
    test dword[vrama+eax],8000h
    jnz near %%flipyfull
    add ecx,[yposng]
    test dword[vrama+eax],4000h
    jnz near %%flipxfull
    mov ebx,[ecx]
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx+4]
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%flipxfull
    mov ebx,[ecx+4]
    bswap ebx
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx]
    bswap ebx
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%flipyfull
    add ecx,[flipyposng]
    test word[vrama+eax],4000h
    jnz near %%flipxyfull
    mov ebx,[ecx]
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx+4]
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%flipxyfull
    mov ebx,[ecx+4]
    bswap ebx
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx]
    bswap ebx
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%parttile
    %2
    ; start drawing from ecx to edi
    test word[vrama+eax],8000h
    jnz near %%flipypart
    add ecx,[yposng]
    test word[vrama+eax],4000h
    jnz near %%flipxpart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawd
    add ebx,edx
    test bl,%8
    jz %%drawa
    mov [edi],bl
%%drawa
    test bh,%8
    jz %%drawb
    mov [edi+1],bh
%%drawb
    shr ebx,16
    test bl,%8
    jz %%drawc
    mov [edi+2],bl
%%drawc
    test bh,%8
    jz %%drawd
    mov [edi+3],bh
%%drawd
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2
    add ebx,edx
    test bl,%8
    jz %%drawa2
    mov [edi+4],bl
%%drawa2
    test bh,%8
    jz %%drawb2
    mov [edi+5],bh
%%drawb2
    shr ebx,16
    test bl,%8
    jz %%drawc2
    mov [edi+6],bl
%%drawc2
    test bh,%8
    jz %%drawd2
    mov [edi+7],bh
%%drawd2
    jmp %5

%%flipxpart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdf
    add ebx,edx
    test bl,%8
    jz %%drawaf
    mov [edi+7],bl
%%drawaf
    test bh,%8
    jz %%drawbf
    mov [edi+6],bh
%%drawbf
    shr ebx,16
    test bl,%8
    jz %%drawcf
    mov [edi+5],bl
%%drawcf
    test bh,%8
    jz %%drawdf
    mov [edi+4],bh
%%drawdf
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2f
    add ebx,edx
    test bl,%8
    jz %%drawa2f
    mov [edi+3],bl
%%drawa2f
    test bh,%8
    jz %%drawb2f
    mov [edi+2],bh
%%drawb2f
    shr ebx,16
    test bl,%8
    jz %%drawc2f
    mov [edi+1],bl
%%drawc2f
    test bh,%8
    jz %%drawd2f
    mov [edi],bh
%%drawd2f
    jmp %5

%%flipypart
    add ecx,[flipyposng]
    test word[vrama+eax],4000h
    jnz near %%flipxypart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdm
    add ebx,edx
    test bl,%8
    jz %%drawam
    mov [edi],bl
%%drawam
    test bh,%8
    jz %%drawbm
    mov [edi+1],bh
%%drawbm
    shr ebx,16
    test bl,%8
    jz %%drawcm
    mov [edi+2],bl
%%drawcm
    test bh,%8
    jz %%drawdm
    mov [edi+3],bh
%%drawdm
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2m
    add ebx,edx
    test bl,%8
    jz %%drawa2m
    mov [edi+4],bl
%%drawa2m
    test bh,%8
    jz %%drawb2m
    mov [edi+5],bh
%%drawb2m
    shr ebx,16
    test bl,%8
    jz %%drawc2m
    mov [edi+6],bl
%%drawc2m
    test bh,%8
    jz %%drawd2m
    mov [edi+7],bh
%%drawd2m
    jmp %5

%%flipxypart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdfm
    add ebx,edx
    test bl,%8
    jz %%drawafm
    mov [edi+7],bl
%%drawafm
    test bh,%8
    jz %%drawbfm
    mov [edi+6],bh
%%drawbfm
    shr ebx,16
    test bl,%8
    jz %%drawcfm
    mov [edi+5],bl
%%drawcfm
    test bh,%8
    jz %%drawdfm
    mov [edi+4],bh
%%drawdfm
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2fm
    add ebx,edx
    test bl,%8
    jz %%drawa2fm
    mov [edi+3],bl
%%drawa2fm
    test bh,%8
    jz %%drawb2fm
    mov [edi+2],bh
%%drawb2fm
    shr ebx,16
    test bl,%8
    jz %%drawc2fm
    mov [edi+1],bl
%%drawc2fm
    test bh,%8
    jz %%drawd2fm
    mov [edi],bh
%%drawd2fm
%5
    mov ebx,[cbgval]
    add word[ofsmmptr],2
    inc dword[bg1totng+ebx*4]
    add word[ofsmtptr],2
    mov ax,[ofsmmptr]
    mov ebx,[yposngom]
    mov edx,[flipyposngom]
    mov [yposng],ebx
    mov [flipyposng],edx
    add edi,8
    test eax,03Fh
    jz near %%tileadd
%%next
    mov ebx,[ofsmcptr]
    add ebx,[ofsmcptr2]
    mov ecx,[ofsmval]
    add dword[ofshvaladd],8
    test dword[ebx],ecx
    jz .noofsm
    mov ebx,[ebx]
    mov ax,[ofsmtptr]
    and ebx,3FFh
    add ebx,[ofsmcyps]
    test ebx,100h
    jz .noupper
    add ax,[ofsmady]
.noupper
    and ebx,0FFh
    mov edx,ebx
    shr ebx,3
    and edx,07h
    shl ebx,6
    shl edx,3
    add ax,bx
    mov [yposng],edx
    xor edx,38h
    mov [flipyposng],edx
.noofsm
    mov ebx,[ofsmcptr]
    add ebx,[ofsmcptr2]
    add dword[ofsmcptr2],2
    mov ecx,[ofsmvalh]
    and dword[ofsmcptr2],3Fh
    test dword[ofsmcptr2],3Fh
    jnz %%notzeroed
    mov bx,[bgtxadd2]
    add word[ofsmcptr],bx
%%notzeroed
    test dword[ebx-40h],ecx
    jz %%noofsmh
    mov ebx,[ebx-40h]
    sub ax,[ofsmtptr]
    add ax,[ofsmtptrs]
    add ebx,[ofshvaladd]
    test ebx,100h
    jz %%noleft
    add ax,[ofsmadx]
%%noleft
    and ebx,0F8h
    shr ebx,2
    add ax,bx
%%noofsmh
    dec byte[tleftn]
    jnz near %4
%%fin
    pop ebx
    cmp byte[curmosaicsz],1
    jne near domosaicng
    ret
%%docache
    call %3
    jmp %%returnfromcache
%%tileadd
    mov bx,[bgtxadd]
    add ax,bx
    add [ofsmmptr],bx
    add word[ofsmtptr],bx
    jmp %%next
%endmacro