SETA ST010 Support (Thanks The Dumper!)

zsnes/src/chips/st10proc.asm

@@ -0,0 +1,128 @@
+;Copyright (C) 2003 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.
+
+%include "macros.mac"
+
+NEWSYM SetaCmdEnable,    dd 0     ; Seta ST010/ST011 command enable register. Maybe also status.
+EXTSYM setaramdata
+;; EXTSYM ST010DoCommand   ; coming soon
+
+;; TODO - should return ROM for > 8000h
+NEWSYM setaaccessbankr8
+    mov ebx,[setaramdata]
+    and ecx,0fffh
+    mov al,[ebx+ecx]
+    xor ebx,ebx
+    ret
+
+NEWSYM setaaccessbankw8
+    test ecx,8000h
+    jnz .nosetenablew8	; ignore ROM writes
+    and ecx,0fffh
+    mov ebx,[setaramdata]
+    mov [ebx+ecx],al
+    cmp byte [ebx+021h], 80h
+    jnz .nosetenablew8
+    pushad
+;;    call ST010DoCommand
+    popad
+.nosetenablew8
+    xor ebx,ebx
+    ret
+
+;; We ignore the case where it wraps into ROM reads - should never happen
+NEWSYM setaaccessbankr16
+    mov ebx,[setaramdata]
+    and ecx,0fffh
+    mov ax,[ebx+ecx]
+    xor ebx,ebx
+    ret
+
+NEWSYM setaaccessbankw16
+    test ecx,8000h
+    jnz .nosetenablew16	; ignore ROM writes
+    cmp ecx,7fffh
+    jne .noromw16
+    mov [setaramdata+0fffh],al	; only write ram part in, not rom part
+    jmp short .nosetenablew16
+.noromw16
+    and ecx,0fffh
+    mov ebx,[setaramdata]
+    cmp ecx,0fffh
+    jne .nowrapw16
+    mov [ebx+ecx],al
+    xchg ah,al
+    mov [ebx],al
+    jmp short .nosetenablew16
+.nowrapw16
+    mov word [ebx+ecx],ax
+    cmp byte [ebx+021h], 80h
+    jnz .nosetenablew16
+    pushad
+;;    call ST010DoCommand
+    popad
+.nosetenablew16
+    xor ebx,ebx
+    ret
+
+
+NEWSYM setaaccessbankr8a
+    xor al,al
+    cmp ecx,4000h
+    jae .nosetenabler8a
+    and ecx, 3
+    mov al,[SetaCmdEnable+ecx]
+.nosetenabler8a
+    xor ebx,ebx
+    ret
+
+NEWSYM setaaccessbankw8a
+    cmp ecx,4000h
+    jae .nosetenablew8a
+    and ecx, 03h
+    mov [SetaCmdEnable+ecx],al
+.nosetenablew8a
+    xor ebx,ebx
+    ret
+
+NEWSYM setaaccessbankr16a
+    xor ax,ax
+    cmp ecx,4000h
+    jae .nosetenabler16a
+    and ecx,3
+    mov al,[SetaCmdEnable+ecx]
+    xchg ah,al
+    inc ecx
+    and ecx,3
+    mov al,[SetaCmdEnable+ecx]
+.nosetenabler16a
+    xor ebx,ebx
+    ret
+
+NEWSYM setaaccessbankw16a
+    cmp ecx,4000h
+    jae .nosetenablew16a
+    mov ebx,[setaramdata]
+    and ecx,3
+    mov [ebx+ecx],al
+    xchg ah,al
+    inc ecx
+    and ecx,3
+    mov [ebx+ecx],al
+.nosetenablew16a
+    xor ebx,ebx
+    ret

zsnes/src/cpu/execute.asm

@@ -50,7 +50,7 @@ EXTSYM nextmenupopup
 EXTSYM MovieProcessing
 EXTSYM MovieFileHand, PrintStr
 EXTSYM OSExit,DosExit,InitDir,InitDrive,createnewcfg,fnames,gotoroot,previdmode
-EXTSYM ramsize,sfxramdata,sram,SRAMDrive,SRAMDir,welcome
+EXTSYM ramsize,sfxramdata,setaramdata,SETAEnable,sram,SRAMDrive,SRAMDir,welcome
 ;    EXTSYM tempstore
 EXTSYM printhex
 %ifdef __MSDOS__
@@ -599,6 +599,11 @@ NEWSYM BackupCVFrame
     BackupCVMacB prevoamptr,1
     BackupCVMac ReadHead,1
 
+    cmp byte[SETAEnable],1
+    jne .noseta
+    BackupCVMacM [setaramdata],256
+.noseta
+
     mov edx,[sram]
     mov ecx,[ramsize]
     shr ecx,4
@@ -694,6 +699,11 @@ NEWSYM RestoreCVFrame
     BackupCVRMacB prevoamptr,1
     BackupCVRMac ReadHead,1
 
+    cmp byte[SETAEnable],1
+    jne .noseta
+    BackupCVRMacM [setaramdata],256
+.noseta
+
     mov edx,[sram]
     mov ecx,[ramsize]
     shr ecx,4
@@ -1393,6 +1403,19 @@ NEWSYM endprog
     call Write_File
     call Close_File
 .nosfxsram
+
+    cmp byte[SETAEnable],0
+    je .nosetasram
+    mov edx,fnames+1
+    call Create_File
+    jc .nosetasram
+    mov bx,ax
+    mov ecx,4096
+    mov edx,[setaramdata]
+    call Write_File
+    call Close_File
+.nosetasram
+
     cmp byte[SA1Enable],1
     jne .nosa1
     mov edx,fnames+1
@@ -1654,6 +1677,14 @@ NEWSYM statesaver
     mov ecx,[SfxRAMMem]
     add [SfxLastRamAdr],ecx
 .nosfx
+
+    cmp byte[SETAEnable],1
+    jne .noseta
+    mov ecx,4096
+    mov edx,[setaramdata]
+    call Write_File
+.noseta
+
     cmp byte[SPC7110Enable],1
     jne .nospc7110
     mov edx,[romdata]
@@ -1686,6 +1717,7 @@ NEWSYM statesaver
     mov edx,PrevPicture
     call Write_File
 .nocapturepicture
+
     call Close_File
     add dword[Curtableaddr],tableA
     add dword[spcPCRam],spcRam
@@ -1852,6 +1884,15 @@ NEWSYM stateloader
 
 .nosfx
 
+    cmp byte[SETAEnable],1
+    jne near .noseta
+    mov ecx,4096
+    add dword[Totalbyteloaded],ecx
+    mov edx,[setaramdata]
+    call Read_File
+    ; TODO: load the SetaCmdEnable?  For completeness we should do it but currently we ignore it anyway.
+.noseta
+
     cmp byte[C4Enable],1
     jne .noc4
     mov ecx,2000h
@@ -1889,6 +1930,7 @@ NEWSYM stateloader
     jne .nosdd1
     call UpdateBanksSDD1
 .nosdd1
+
     call Close_File
     call repackfunct
     mov dword[spcnumread],0

zsnes/src/gui/gui.asm

@@ -77,7 +77,7 @@ EXTSYM Voice0Status, Voice1Status, Voice2Status, Voice3Status, Voice4Status
 EXTSYM Voice5Status, Voice6Status, Voice7Status, romtype, SetIRQVectors
 EXTSYM ClearScreen, statesaver, loadstate2, vidbuffer, ASCII2Font, hirestiledat
 EXTSYM showallext, ROMTypeNOTFound, scanlines,statefileloc,pl1selk,pl2selk
-EXTSYM fnamest,sprlefttot,spritetablea,fnames,SFXSRAM,sfxramdata,cgram,srama
+EXTSYM fnamest,sprlefttot,spritetablea,fnames,SFXSRAM,sfxramdata,setaramdata,SETAEnable,cgram,srama
 EXTSYM tempco0,prevbright,maxbr,prevpal,coladdr,coladdg,coladdb
 EXTSYM scaddtype,ScreenScale,vesa2red10,initvideo2,initvideo,pressed,UpdateDevices
 EXTSYM memtabler8,memtablew8,writeon,pl1contrl,pl2contrl,JoyRead,SetInputDevice
@@ -800,6 +800,18 @@ clearsram:
     dec ecx
     jnz .loop2
 .nosfxsram
+
+    cmp byte[SETAEnable],0
+    je .nosetasram
+    mov eax,[setaramdata]
+    mov ecx,4096
+.loop2seta
+    mov byte[eax],0FFh
+    inc eax
+    dec ecx
+    jnz .loop2seta
+.nosetasram
+
     cmp byte[SA1Enable],1
     jne .nosa1
     mov eax,[SA1RAMArea]
@@ -1769,6 +1781,22 @@ NEWSYM StartGUI
 .nosfxramwrite
     stim
 .nosfxsram
+
+    cmp byte[SETAEnable],0
+    je .nosetasram
+    clim
+    mov edx,fnames+1
+    call Create_File
+    jc .nosetaramwrite
+    mov bx,ax
+    mov ecx,4096
+    mov edx,[setaramdata]
+    call Write_File
+    call Close_File
+.nosetaramwrite
+    stim
+.nosetasram
+
     call GUIQuickLoadUpdate
     call LoadDetermine
     ; change dir to LoadDrive/LoadDir

zsnes/src/init.asm

@@ -123,6 +123,10 @@ EXTSYM CalcChecksum
 EXTSYM BankCheck
 EXTSYM MirrorROM
 
+EXTSYM SetaCmdEnable,setaramdata
+EXTSYM setaaccessbankr8,setaaccessbankw8,setaaccessbankr8a,setaaccessbankw8a
+EXTSYM setaaccessbankr16,setaaccessbankw16,setaaccessbankr16a,setaaccessbankw16a
+
 %ifdef __LINUX__
 EXTSYM LoadDir, popdir, pushdir
 %endif
@@ -4487,7 +4491,7 @@ NEWSYM CheckROMType
     cmp ax,0F630h
     jne .notSETAB
     mov byte[SETAEnable],1
-    mov byte[CHIPSRAM],1 ;Check later if this should be removed
+;;    mov byte[CHIPSRAM],1 ;Check later if this should be removed
     jmp .endchpdtct
 .notSETAB
 ;Super FX has SRAM, but only a battery to save it on the latter two
@@ -4738,6 +4742,48 @@ NEWSYM CheckROMType
 .nosramsfx
     call InitFxTables
 .nosfx
+
+
+
+  ;Setup Seta ST010 / ST011 stuff
+    cmp byte[SETAEnable],1
+    jne near .noseta
+    ; Really banks 68h-6Fh:0000-7FFF are all mapped the same by the chip but F1ROCII only uses bank 68h
+    mov dword[memtabler8+68h*4],setaaccessbankr8
+    mov dword[memtablew8+68h*4],setaaccessbankw8
+    mov dword[memtabler16+68h*4],setaaccessbankr16
+    mov dword[memtablew16+68h*4],setaaccessbankw16
+
+    ; Control register (and some status?) is in banks 60h-67h:0000-3FFF
+    mov dword[memtabler8+60h*4],setaaccessbankr8a
+    mov dword[memtablew8+60h*4],setaaccessbankw8a
+    mov dword[memtabler16+60h*4],setaaccessbankr16a
+    mov dword[memtablew16+60h*4],setaaccessbankw16a
+
+    mov dword[SetaCmdEnable],00000080h	; 60:0000
+    mov esi,[setaramdata]
+    mov ecx,1024	; 4096 bytes
+.loopsetaclear
+    mov dword[esi],0
+    add esi,4
+    dec ecx
+    jnz .loopsetaclear
+    cmp byte[SramExists],0
+    je .nosramseta
+    mov esi,[sram]
+    mov edi,[setaramdata]
+    mov ecx,1024
+.setasramloop
+    mov eax,[esi]
+    mov [edi],eax
+    add esi,4
+    add edi,4
+    dec ecx
+    jnz .setasramloop
+.nosramseta
+.noseta
+
+
     
     ;General Stuff all mixed together
     mov dword[SfxSFR],0

zsnes/src/ui.asm

@@ -192,6 +192,7 @@ NEWSYM vidbufferofsmos, resd 1          ; mosaic offset for new graphics engine
 NEWSYM headdata,      resd 1
 NEWSYM romdata,       resd 1            ; rom data  (4MB = 4194304)
 NEWSYM sfxramdata,    resd 1            ; SuperFX Ram Data
+NEWSYM setaramdata,   resd 1            ; Seta ST010/ST011 SRam Data
 NEWSYM wramdata,      resd 1            ; stack (64K = 32768)
 NEWSYM ram7f,         resd 1            ; ram @ 7f = 65536
 NEWSYM vram,          resd 1            ; vram = 65536
@@ -724,6 +725,7 @@ NEWSYM allocptr
     add eax,4194304
     mov dword[sfxramdata],eax
 
+    mov dword[setaramdata],eax	; share ram data with sfx
     mov esi,[romdata]
     cmp byte[Sup48mbit],0
     je .no48mbit