mirror of
https://github.com/RaySollium99/picodrive.git
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psp readme, some adjustments
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@296 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
b542be4686
commit
81fda4e8d8
7 changed files with 265 additions and 87 deletions
99
Pico/Draw.c
99
Pico/Draw.c
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@ -535,6 +535,8 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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}
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// Draw tiles across screen:
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if (!sh)
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{
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for (; tilex < tend; tilex++)
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{
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int addr=0,zero=0;
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@ -549,8 +551,33 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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pal=((code>>9)&0x30);
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if(sh) {
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int tmp, *zb = (int *)(HighCol+8+(tilex<<3));
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// Get tile address/2:
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addr=(code&0x7ff)<<4;
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if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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else zero=TileNorm(8+(tilex<<3),addr,pal);
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if (zero) blank=code; // We know this tile is blank now
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}
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}
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else
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{
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for (; tilex < tend; tilex++)
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{
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int addr=0,zero=0;
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int pal, tmp, *zb;
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code=Pico.vram[nametab+tilex];
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if(code==blank) continue;
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if((code>>15) != prio) {
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rendstatus|=2;
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continue;
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}
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pal=((code>>9)&0x30);
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zb = (int *)(HighCol+8+(tilex<<3));
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if(prio) {
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tmp = *zb;
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if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
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@ -562,7 +589,6 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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} else {
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pal |= 0x40;
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}
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}
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// Get tile address/2:
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addr=(code&0x7ff)<<4;
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@ -573,22 +599,13 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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if (zero) blank=code; // We know this tile is blank now
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}
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// terminate the cache list
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//*hcache = 0;
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}
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}
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// --------------------------------------------
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static void DrawTilesFromCache(int *hc, int sh, int rlim)
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static void DrawTilesFromCacheShPrep(void)
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{
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int code, addr, dx;
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int pal;
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// *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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if (sh && (rendstatus&0xc0))
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{
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if (!(rendstatus&0x80))
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{
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// as some layer has covered whole line with hi priority tiles,
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@ -607,10 +624,42 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim)
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zb++;
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}
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}
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}
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static void DrawTilesFromCache(int *hc, int sh, int rlim)
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{
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int code, addr, dx;
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int pal;
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// *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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if (sh && (rendstatus&0xc0))
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{
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DrawTilesFromCacheShPrep();
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sh = 0;
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}
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if (sh)
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if (!sh)
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{
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short blank=-1; // The tile we know is blank
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while ((code=*hc++)) {
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int zero;
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if((short)code == blank) continue;
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// Get tile address/2:
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addr=(code&0x7ff)<<4;
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addr+=(unsigned int)code>>25; // y offset into tile
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dx=(code>>16)&0x1ff;
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pal=((code>>9)&0x30);
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if (rlim-dx < 0) goto last_cut_tile;
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if (code&0x0800) zero=TileFlip(dx,addr,pal);
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else zero=TileNorm(dx,addr,pal);
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if (zero) blank=(short)code;
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}
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}
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else
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{
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while ((code=*hc++)) {
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unsigned char *zb;
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@ -631,26 +680,6 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim)
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else TileNorm(dx,addr,pal);
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}
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}
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else
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{
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short blank=-1; // The tile we know is blank
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while ((code=*hc++)) {
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int zero;
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if((short)code == blank) continue;
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// Get tile address/2:
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addr=(code&0x7ff)<<4;
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addr+=(unsigned int)code>>25; // y offset into tile
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dx=(code>>16)&0x1ff;
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pal=((code>>9)&0x30);
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if (rlim-dx < 0) goto last_cut_tile;
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if (code&0x0800) zero=TileFlip(dx,addr,pal);
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else zero=TileNorm(dx,addr,pal);
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if (zero) blank=(short)code;
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}
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}
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return;
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last_cut_tile:
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@ -1,10 +1,11 @@
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# vim:filetype=mips
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# only CLUT for now..
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.set noreorder # don't reorder any instructions
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.set noat # don't use $at
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.text
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.align 4
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# void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count)
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@ -1671,6 +1672,9 @@ tile00000001:
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jr $ra
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sb $t0, 0($a0)
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.data
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.align 4
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TileTable:
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.long 000000000000, tile00000001, tile00000010, tile00000011, tile00000100, tile00000101, tile00000110, tile00000111
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.long tile00001000, tile00001001, tile00001010, tile00001011, tile00001100, tile00001101, tile00001110, tile00001111
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@ -339,7 +339,7 @@ PICO_INTERNAL_ASM u32 PicoRead8(u32 a)
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else d=OtherRead16(a&~1, 8);
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if ((a&1)==0) d>>=8;
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end:
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#ifdef __debug_io
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dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);
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#endif
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@ -684,11 +684,14 @@ PICO_INTERNAL unsigned char z80_read(unsigned short a)
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if (a>=0x8000)
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{
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extern u32 PicoReadM68k8(u32 a);
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u32 addr68k;
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addr68k=Pico.m.z80_bank68k<<15;
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addr68k+=a&0x7fff;
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ret = (u8) PicoRead8(addr68k);
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if (PicoMCD & 1)
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ret = PicoReadM68k8(addr68k);
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else ret = PicoRead8(addr68k);
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elprintf(EL_Z80BNK, "z80->68k r8 [%06x] %02x", addr68k, ret);
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return ret;
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}
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@ -728,11 +731,14 @@ PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data)
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if (a>=0x8000)
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{
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extern void PicoWriteM68k8(u32 a,u8 d);
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u32 addr68k;
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addr68k=Pico.m.z80_bank68k<<15;
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addr68k+=a&0x7fff;
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elprintf(EL_Z80BNK, "z80->68k w8 [%06x] %02x", addr68k, data);
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PicoWrite8(addr68k, data);
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if (PicoMCD & 1)
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PicoWriteM68k8(addr68k, data);
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else PicoWrite8(addr68k, data);
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return;
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}
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@ -450,7 +450,7 @@ static void OtherWrite8End(u32 a, u32 d, int realsize)
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#ifdef _ASM_CD_MEMORY_C
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u32 PicoReadM68k8(u32 a);
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#else
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static u32 PicoReadM68k8(u32 a)
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u32 PicoReadM68k8(u32 a)
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{
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u32 d=0;
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@ -723,7 +723,7 @@ static u32 PicoReadM68k32(u32 a)
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#ifdef _ASM_CD_MEMORY_C
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void PicoWriteM68k8(u32 a,u8 d);
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#else
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static void PicoWriteM68k8(u32 a,u8 d)
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void PicoWriteM68k8(u32 a,u8 d)
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{
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#ifdef __debug_io
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dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);
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@ -4,7 +4,7 @@
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/* Autor: Oscar Orallo Pelaez */
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/* Fecha de comienzo: 03-10-2006 */
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/* Ultima actualizacion: 08-10-2006 */
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/* Based on the excellent FAMEC emulator by Stèphane Dallongueville */
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/* Based on the excellent C68K emulator by Stèphane Dallongueville */
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/****************************************************************************/
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#include <stdio.h>
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@ -7,6 +7,15 @@ http://www.gp32x.com/board/
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About
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-----
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#ifdef PSP
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This is yet another Megadrive / Genesis emulator for PSP, but with
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Sega CD / Mega CD support. Although it has been originally written having
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ARM CPU based devices in mind, it has now been ported to PSP too, by
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replacing ARM specific parts with portable C code.
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The base code originates from Dave's (fdave, finalburn) PicoDrive 0.30 for
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Pocket PC. The Sega/Mega CD code is roughly based on Stephane Dallongeville's
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Gens.
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#else
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This is yet another Megadrive / Genesis / Sega CD / Mega CD emulator, which
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was written having ARM-based handheld devices in mind (such as PDAs,
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smartphones and handheld consoles like GP2X and Gizmondo of course).
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@ -14,6 +23,7 @@ The critical parts (renderer, 68K and Z80 cpu interpreters) and some other
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random code is written in ARM asm, other code is C. The base code originates
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from Dave's (fdave, finalburn) PicoDrive 0.30 for Pocket PC. The Sega/Mega CD
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code is roughly based on Stephane Dallongeville's Gens.
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#endif
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How to make it run
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@ -34,10 +44,28 @@ the root of SD, etc). Then load a ROM and enjoy! ROMs can be placed anywhere, ca
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be in .smd or .bin format and can be zipped (one ROM per zip).
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#endif
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If you have any problems (game does not boot, sound is glitchy, broken graphics),
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make sure you enable "Accurate timing", "Emulate Z80" and use "16bit accurate
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renderer". This way you will get the best compatibility this emulator can
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provide.
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#ifdef PSP
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If you are running a custom firmware, just copy the whole PicoDrive directory to
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/PSP/GAME or /PSP/GAMEXXX directory in your memory stick (it shouldn't matter
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which one GAME* directory to use).
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If you are on 1.5, you will have to use KXploit tool to create the needed files
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and directories, and then copy them to /PSP/GAME. I assume 1.5 users know how to
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do this, if not, just google for KXploit.
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#endif
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Note that this emulator may require some tweaking of configuration settings to run
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some games well. For Genesis/MegaDrive, if you have any problems (game does not
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boot, sound is glitchy, broken graphics), try to:
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* enable "Accurate timing" (options menu)
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#ifdef PSP
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* enable "accurate renderer"
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#else
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* enable "16bit accurate renderer"
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#endif
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* make sure Z80 is not disabled (in "advanced options" submenu in options).
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Some games may need to be reset after adjusting settings.
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For possible Sega/Mega CD problems, see "Other important stuff" section below.
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@ -68,6 +96,11 @@ Sonic the Hedgehog CD (US) - Track 02.mp3
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Sonic the Hedgehog CD (US) - Track 03.mp3
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...
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It is very important to have the MP3s encoded at 44kHz sample rate and they
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must be stereo, or else they will play too fast/slow or won't play at all.
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Be sure NOT to use anything but classic mp3 format (don't use things like
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mp3pro).
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ISO files can also be zipped (but not mp3 files, as they are already
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compressed). Note that this can cause very long loading times, which may
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take up to several minutes. File naming is similar as with uncompressed ISOs.
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@ -83,12 +116,24 @@ Other important stuff
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---------------------
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* If your Genesis/MD game hangs or has glitches, this is most likely because
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"Accurate timing" option is not enabled, or 8bit fast renderer is used
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(try the 16 bit one), or Z80 is disabled in "advanced options".
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"Accurate timing" option is not enabled, or fast renderer is used
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(try the accurate one), or Z80 is disabled in "advanced options".
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* Sega/Mega CD: If the game hangs after Sega logo, you may need to enable
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"better sync" and/or "Scale/Rot. fx" options, found in "Sega/Mega CD options"
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submenu, and then reset the game. Some other games may also require
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"CDDA audio" and "PCM audio" to work.
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"CDDA audio" and "PCM audio" to be enabled to work (enabled by default).
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Incorrectly named/missing mp3s may also be the cause.
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* Sega/Mega CD: If the background music is missing, you might have named your
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MP3s incorrectly. Read "How to run Sega/Mega CD games" section again.
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* Sega/Mega CD: If the game music plays too fast or too slow, you have encoded
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your MP3s incorrectly. You will have to re-encode and/or resample them.
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PicoDrive is not a mp3 player, so all mp3s MUST be encoded at 44.1kHz stereo.
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Badly encoded mp3s can cause various kind of problems, like noises, incorrect
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playback speeds, not repeating music or even prevent game from starting.
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* Sega/Mega CD: If your games hangs at the BIOS screen (with planets shown),
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you may be using a bad BIOS dump. Try another from a different source.
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* Some Sega/Mega CD games don't use Z80 for anything, but they leave it active,
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so disabling Z80 manually (in advanced options) improves performance.
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#ifdef GP2X
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* Sega/Mega CD: if FMV game performance is poor, try adjusting
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"ReadAhead buffer" to something like 2048K.
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@ -98,9 +143,6 @@ Other important stuff
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it may start hanging and producing random noise, or causing ARM940 crashes
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("940 crashed" message displayed).
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#endif
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* PicoDrive is not a mp3 player, so all mp3s MUST be encoded at 44.1kHz stereo.
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Badly encoded mp3s can cause various kind of problems, like noises, incorrect
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playback speeds, not repeating music or even prevent game from starting.
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* Use lower bitrate for better performance (96 or 128kbps CBRs recommended).
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#ifdef GP2X
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* Due to internal implementation mp3s must not be larger that 12MB
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@ -131,11 +173,18 @@ a bit faster for some games, but not much, because colors still need to be
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converted to 16bit, as this is what Gizmondo requires. It also introduces
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graphics problems for some games, so it's best to use 16bit one.
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#endif
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#ifdef PSP
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This option allows to switch between fast and accurate renderers. The fast one
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is much faster, because it draws the whole frame at a time, instead of doing it
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line by line, like the accurate one does. But because of the way it works it
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can't render any mid-frame image changes (raster effects), so it is useful only
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for some games.
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#endif
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#ifdef GIZ
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@@0. "Scanline mode"
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This option was designed to work around slow framebuffer access (the Gizmondo's
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main bottleneck) by drawing every other line (even nummbered lines only).
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||||
main bottleneck) by drawing every other line (even numbered lines only).
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This improves performance greatly, but looses detail.
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#endif
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@ -179,7 +228,12 @@ Does what it says. You must enable at least YM2612 or SN76496 (in advanced optio
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|||
see below) for this to make sense (already done by default).
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@@0. "Sound Quality"
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Sound rate and stereo mode. Mono is not available in Sega/Mega CD mode.
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#ifdef PSP
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Sound sample rate, affects sound quality and emulation performance.
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22050Hz setting is the recommended one.
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#else
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||||
Sound sample rate and stereo mode. Mono is not available in Sega/Mega CD mode.
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#endif
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#ifdef GP2X
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If you want 44100Hz sound, it is recommended to enable the second core (next option).
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@ -198,7 +252,7 @@ specified region, or just to set autodetection order. Also affects Sega/Mega CD.
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@@0. "Use SRAM/BRAM savestates"
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This will automatically read/write SRAM (or BRAM for Sega/Mega CD) savestates for
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||||
games which are using them. SRAM is saved whenever you pause your game or exit the
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games which are using them. SRAM is saved whenever you enter the menu or exit the
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emulator.
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@@0. "Confirm savestate"
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@ -217,6 +271,14 @@ There is no separate option for the second CPU because both CPUs use the same cl
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source. Setting this option to 200 will cause PicoDrive NOT to change GP2X's clocks
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at all (this is if you use external program to set clock).
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#endif
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#ifdef PSP
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@@0. "CPU/bus clock"
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||||
This allows to change CPU and bus clocks for PSP. 333MHz is recommended.
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||||
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@@0. "[Display options]"
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Enters Display options menu (see below).
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||||
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#endif
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@@0. "[Sega/Mega CD options]"
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Enters Sega/Mega CD options menu (see below).
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||||
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@ -347,6 +409,43 @@ for example most (all?) Wolfteam games, and some other ones. Don't use it for
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|||
games which don't need it, it will just slow them down.
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||||
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||||
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||||
#ifdef PSP
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Display options
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---------------
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||||
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@@3. "Scale factor"
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||||
This allows to resize the displayed image by using the PSP's hardware. The number is
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||||
used to multiply width and height of the game image to get the size of image to be
|
||||
displayed. If you just want to make it fullscreen, just use "Set to fullscreen"
|
||||
setting below.
|
||||
|
||||
@@3. "Hor. scale (for low res. games)"
|
||||
This one works similarly as the previous setting, but can be used to apply additional
|
||||
scaling horizontally, and is used for games which use lower (256 pixel wide) Gen/MD
|
||||
resolution.
|
||||
|
||||
@@3. "Hor. scale (for hi res. games)"
|
||||
Same as above, only for higher (320 pixel wide) resolution using games.
|
||||
|
||||
@@3. "Bilinear filtering"
|
||||
If this is enabled, PSP hardware will apply bilinear filtering on the resulting image,
|
||||
making it smoother, but blurry.
|
||||
|
||||
@@3. "Wait for vsync"
|
||||
Wait for the screen to finish updating before switching to next frame, to avoid tearing.
|
||||
There are 3 options:
|
||||
* never: don't wait for vsync.
|
||||
* sometimes: wait only if emulator is running fast enough.
|
||||
* always: always wait (causes emulation slowdown).
|
||||
|
||||
@@3. "Set to unscaled centered"
|
||||
Adjust the resizing options to set game image to it's original size.
|
||||
|
||||
@@3. "Set to fullscreen"
|
||||
Adjust the resizing options to make the game image fullscreen.
|
||||
|
||||
|
||||
#endif
|
||||
Key configuration
|
||||
-----------------
|
||||
|
||||
|
|
@ -358,6 +457,9 @@ the right GP2X ones, which are assigned to them. If you bind 2 different GP2X bu
|
|||
#ifdef GIZ
|
||||
the right Giz ones, which are assigned to them. If you bind 2 different Giz buttons
|
||||
#endif
|
||||
#ifdef PSP
|
||||
the right PSP ones, which are assigned to them. If you bind 2 different PSP buttons
|
||||
#endif
|
||||
to the same action, you will get a combo (which means that you will have to press
|
||||
both buttons for that action to happen.
|
||||
|
||||
|
|
@ -404,14 +506,23 @@ What is emulated?
|
|||
-----------------
|
||||
|
||||
Genesis/MegaDrive:
|
||||
#ifdef PSP
|
||||
main 68k @ 7.6MHz: yes, FAME/C core
|
||||
z80 @ 3.6MHz: yes, CZ80 core
|
||||
#else
|
||||
main 68k @ 7.6MHz: yes, Cyclone core
|
||||
z80 @ 3.6MHz: yes, DrZ80 core
|
||||
#endif
|
||||
VDP: yes, except some quirks not used by games
|
||||
YM2612 FM: yes, optimized MAME core
|
||||
SN76489 PSG: yes, MAME core
|
||||
|
||||
Sega/Mega CD:
|
||||
#ifdef PSP
|
||||
another 68k @ 12.5MHz: yes, FAME/C too
|
||||
#else
|
||||
another 68k @ 12.5MHz: yes, Cyclone too
|
||||
#endif
|
||||
gfx scaling/rotation chip (custom ASIC): yes
|
||||
PCM sound source: yes
|
||||
CD-ROM controller: yes (mostly)
|
||||
|
|
@ -434,7 +545,7 @@ Credits
|
|||
This emulator uses code from these people/projects:
|
||||
|
||||
notaz
|
||||
GP2X, UIQ, Gizmondo ports, Cyclone 68000 hacks,
|
||||
GP2X, UIQ, PSP, Gizmondo ports, CPU core hacks,
|
||||
lots of additional coding (see changelog).
|
||||
Homepage: http://notaz.gp2x.de/
|
||||
|
||||
|
|
@ -442,22 +553,39 @@ Dave
|
|||
Cyclone 68000 core, Pico emulation library
|
||||
Homepage: http://www.finalburn.com/
|
||||
|
||||
#ifdef PSP
|
||||
Chui
|
||||
FAME/C 68k interpreter core
|
||||
(based on C68K by Stephane Dallongeville)
|
||||
|
||||
Stephane Dallongeville (written), NJ (optimized)
|
||||
CZ80 Z80 interpreter core
|
||||
|
||||
#else
|
||||
Reesy & FluBBa
|
||||
DrZ80, the Z80 emulator written in ARM assembly.
|
||||
DrZ80, the Z80 interpreter written in ARM assembly.
|
||||
Homepage: http://reesy.gp32x.de/
|
||||
|
||||
Tatsuyuki Satoh, Jarek Burczynski, MultiArcadeMachineEmulator development
|
||||
#endif
|
||||
Tatsuyuki Satoh, Jarek Burczynski, MAME development
|
||||
software implementation of Yamaha FM sound generator
|
||||
|
||||
MultiArcadeMachineEmulator (MAME) development
|
||||
Texas Instruments SN76489 / SN76496 programmable tone /noise generator
|
||||
MAME development
|
||||
Texas Instruments SN76489 / SN76496 programmable tone/noise generator
|
||||
Homepage: http://www.mame.net/
|
||||
|
||||
Stephane Dallongeville
|
||||
Gens, MD/Mega CD/32X emulator. Most Sega CD code is based on this emu.
|
||||
#ifdef PSP
|
||||
|
||||
people @ ps2dev.org forums / PSPSDK crew
|
||||
libaudiocodec code (by cooleyes)
|
||||
other sample code
|
||||
#else
|
||||
|
||||
Helix community
|
||||
Helix mp3 decoder
|
||||
#endif
|
||||
|
||||
|
||||
Additional thanks
|
||||
|
|
@ -499,6 +627,13 @@ Additional thanks
|
|||
|
||||
Changelog
|
||||
---------
|
||||
1.35
|
||||
+ PSP port added. Lots of new code for it. Integrated modified FAME/C, CZ80 cores.
|
||||
+ Some minor generic optimizations.
|
||||
* Patched some code which was crashing under PSP, but was working in GP2X/Giz
|
||||
(although it should have crashed there too).
|
||||
* Readme updated.
|
||||
|
||||
1.34
|
||||
+ Gizmondo port added.
|
||||
+ Some new optimizations in memory handlers, and for shadow/hilight mode.
|
||||
|
|
|
|||
|
|
@ -85,6 +85,10 @@ int main(int argc, char *argv[])
|
|||
if ( check_defines((void *) &argv[3], argc-3, buff + 7)) skip_mode = 1;
|
||||
ifdef_level++;
|
||||
}
|
||||
else if (strncmp(buff, "#else", 5) == 0)
|
||||
{
|
||||
skip_mode ^= 1;
|
||||
}
|
||||
else if (strncmp(buff, "#endif", 6) == 0)
|
||||
{
|
||||
ifdef_level--;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue