408 lines
12 KiB
C
408 lines
12 KiB
C
/*
|
|
PokeMini - Pokémon-Mini Emulator
|
|
Copyright (C) 2009-2015 JustBurn
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "PokeMini.h"
|
|
|
|
TMinxPRC MinxPRC;
|
|
int PRCAllowStall = 1; // Allow stall CPU?
|
|
int StallCPU = 0; // Stall CPU output flag
|
|
int PRCRenderBD = 0; // Render backdrop? (Background overrides backdrop)
|
|
int PRCRenderBG = 1; // Render background?
|
|
int PRCRenderSpr = 1; // Render sprites?
|
|
|
|
const uint8_t PRCInvertBit[256] = { // Invert Bit table
|
|
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
|
|
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
|
|
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
|
|
0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
|
|
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
|
|
0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
|
|
0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
|
|
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
|
|
0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
|
|
0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
|
|
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
|
|
0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
|
|
0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
|
|
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
|
|
0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
|
|
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
|
|
};
|
|
|
|
#ifdef PERFORMANCE
|
|
int StallCycles = 64; // Stall CPU cycles
|
|
#else
|
|
int StallCycles = 32; // Stall CPU cycles
|
|
#endif
|
|
|
|
TMinxPRC_Render MinxPRC_Render = MinxPRC_Render_Mono;
|
|
|
|
//
|
|
// Functions
|
|
//
|
|
|
|
int MinxPRC_Create(void)
|
|
{
|
|
// Reset
|
|
MinxPRC_Reset(1);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void MinxPRC_Destroy(void)
|
|
{
|
|
}
|
|
|
|
void MinxPRC_Reset(int hardreset)
|
|
{
|
|
// Initialize State
|
|
memset((void *)&MinxPRC, 0, sizeof(TMinxPRC));
|
|
|
|
// Initialize variables
|
|
StallCPU = 0;
|
|
MinxPRC.PRCRateMatch = 0x10;
|
|
}
|
|
|
|
int MinxPRC_LoadState(FILE *fi, uint32_t bsize)
|
|
{
|
|
POKELOADSS_START(1+32);
|
|
POKELOADSS_8(StallCPU);
|
|
POKELOADSS_32(MinxPRC.PRCCnt);
|
|
POKELOADSS_32(MinxPRC.PRCBGBase);
|
|
POKELOADSS_32(MinxPRC.PRCSprBase);
|
|
POKELOADSS_8(MinxPRC.PRCMode);
|
|
POKELOADSS_8(MinxPRC.PRCRateMatch);
|
|
POKELOADSS_8(MinxPRC.PRCMapPX);
|
|
POKELOADSS_8(MinxPRC.PRCMapPY);
|
|
POKELOADSS_8(MinxPRC.PRCMapTW);
|
|
POKELOADSS_8(MinxPRC.PRCMapTH);
|
|
POKELOADSS_8(MinxPRC.PRCState);
|
|
POKELOADSS_X(13);
|
|
POKELOADSS_END(1+32);
|
|
|
|
}
|
|
|
|
int MinxPRC_SaveState(FILE *fi)
|
|
{
|
|
POKESAVESS_START(1+32);
|
|
POKESAVESS_8(StallCPU);
|
|
POKESAVESS_32(MinxPRC.PRCCnt);
|
|
POKESAVESS_32(MinxPRC.PRCBGBase);
|
|
POKESAVESS_32(MinxPRC.PRCSprBase);
|
|
POKESAVESS_8(MinxPRC.PRCMode);
|
|
POKESAVESS_8(MinxPRC.PRCRateMatch);
|
|
POKESAVESS_8(MinxPRC.PRCMapPX);
|
|
POKESAVESS_8(MinxPRC.PRCMapPY);
|
|
POKESAVESS_8(MinxPRC.PRCMapTW);
|
|
POKESAVESS_8(MinxPRC.PRCMapTH);
|
|
POKESAVESS_8(MinxPRC.PRCState);
|
|
POKESAVESS_X(13);
|
|
POKESAVESS_END(1+32);
|
|
}
|
|
|
|
void MinxPRC_Sync(void)
|
|
{
|
|
// Process PRC Counter
|
|
MinxPRC.PRCCnt += MINX_PRCTIMERINC * PokeHWCycles;
|
|
if ((PMR_PRC_RATE & 0xF0) >= MinxPRC.PRCRateMatch) {
|
|
// Active frame
|
|
if (MinxPRC.PRCCnt < 0x18000000) {
|
|
// CPU Time
|
|
MinxPRC.PRCState = 0;
|
|
} else if ((MinxPRC.PRCCnt & 0xFF000000) == 0x18000000) {
|
|
// PRC BG&SPR Trigger
|
|
if (MinxPRC.PRCState == 1) return;
|
|
if (MinxPRC.PRCMode == 2) {
|
|
if (PRCAllowStall) StallCPU = 1;
|
|
MinxPRC_Render();
|
|
MinxPRC.PRCState = 1;
|
|
} else if (PRCColorMap) MinxPRC_NoRender_Color();
|
|
} else if ((MinxPRC.PRCCnt & 0xFF000000) == 0x39000000) {
|
|
// PRC Copy Trigger
|
|
if (MinxPRC.PRCState == 2) return;
|
|
if (MinxPRC.PRCMode) {
|
|
if (PRCAllowStall) StallCPU = 1;
|
|
MinxPRC_CopyToLCD();
|
|
MinxCPU_OnIRQAct(MINX_INTR_03);
|
|
MinxPRC.PRCState = 2;
|
|
}
|
|
} else if (MinxPRC.PRCCnt >= 0x42000000) {
|
|
// End-of-frame
|
|
StallCPU = 0;
|
|
PMR_PRC_RATE &= 0x0F;
|
|
MinxPRC.PRCCnt = 0x01000000;
|
|
MinxCPU_OnIRQAct(MINX_INTR_04);
|
|
MinxPRC_On72HzRefresh(1);
|
|
}
|
|
} else {
|
|
// Non-active frame
|
|
if (MinxPRC.PRCCnt >= 0x42000000) {
|
|
PMR_PRC_RATE += 0x10;
|
|
MinxPRC.PRCCnt = 0x01000000;
|
|
MinxPRC_On72HzRefresh(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
uint8_t MinxPRC_ReadReg(uint8_t reg)
|
|
{
|
|
// 0x80 to 0x8F
|
|
switch(reg) {
|
|
case 0x80: // PRC Stage Control
|
|
return PMR_PRC_MODE & 0x3F;
|
|
case 0x81: // PRC Rate Control
|
|
return PMR_PRC_RATE;
|
|
case 0x82: // PRC Map Tile Base (Lo)
|
|
return PMR_PRC_MAP_LO & 0xF8;
|
|
case 0x83: // PRC Map Tile Base (Med)
|
|
return PMR_PRC_MAP_MID;
|
|
case 0x84: // PRC Map Tile Base (Hi)
|
|
return PMR_PRC_MAP_HI & 0x1F;
|
|
case 0x85: // PRC Map Vertical Scroll
|
|
return PMR_PRC_SCROLL_Y & 0x7F;
|
|
case 0x86: // PRC Map Horizontal Scroll
|
|
return PMR_PRC_SCROLL_X & 0x7F;
|
|
case 0x87: // PRC Map Sprite Base (Lo)
|
|
return PMR_PRC_SPR_LO & 0xC0;
|
|
case 0x88: // PRC Map Sprite Base (Med)
|
|
return PMR_PRC_SPR_MID;
|
|
case 0x89: // PRC Map Sprite Base (Hi)
|
|
return PMR_PRC_SPR_HI & 0x1F;
|
|
case 0x8A: // PRC Counter
|
|
return MinxPRC.PRCCnt >> 24;
|
|
default: // Unused
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void MinxPRC_WriteReg(uint8_t reg, uint8_t val)
|
|
{
|
|
// 0x80 to 0x8F
|
|
switch(reg) {
|
|
case 0x80: // PRC Stage Control
|
|
PMR_PRC_MODE = val & 0x3F;
|
|
if (val & 0x08) {
|
|
MinxPRC.PRCMode = (val & 0x06) ? 2 : 1;
|
|
} else MinxPRC.PRCMode = 0;
|
|
switch (val & 0x30) {
|
|
case 0x00: MinxPRC.PRCMapTW = 12; MinxPRC.PRCMapTH = 16; break;
|
|
case 0x10: MinxPRC.PRCMapTW = 16; MinxPRC.PRCMapTH = 12; break;
|
|
case 0x20: MinxPRC.PRCMapTW = 24; MinxPRC.PRCMapTH = 8; break;
|
|
case 0x30: MinxPRC.PRCMapTW = 24; MinxPRC.PRCMapTH = 16; break;
|
|
}
|
|
return;
|
|
case 0x81: // PRC Rate Control
|
|
if ((PMR_PRC_RATE & 0x0E) != (val & 0x0E)) PMR_PRC_RATE = (val & 0x0F);
|
|
else PMR_PRC_RATE = (PMR_PRC_RATE & 0xF0) | (val & 0x0F);
|
|
switch (val & 0x0E) {
|
|
case 0x00: MinxPRC.PRCRateMatch = 0x20; break; // Rate /3
|
|
case 0x02: MinxPRC.PRCRateMatch = 0x50; break; // Rate /6
|
|
case 0x04: MinxPRC.PRCRateMatch = 0x80; break; // Rate /9
|
|
case 0x06: MinxPRC.PRCRateMatch = 0xB0; break; // Rate /12
|
|
case 0x08: MinxPRC.PRCRateMatch = 0x10; break; // Rate /2
|
|
case 0x0A: MinxPRC.PRCRateMatch = 0x30; break; // Rate /4
|
|
case 0x0C: MinxPRC.PRCRateMatch = 0x50; break; // Rate /6
|
|
case 0x0E: MinxPRC.PRCRateMatch = 0x70; break; // Rate /8
|
|
}
|
|
return;
|
|
case 0x82: // PRC Map Tile Base Low
|
|
PMR_PRC_MAP_LO = val & 0xF8;
|
|
MinxPRC.PRCBGBase = (MinxPRC.PRCBGBase & 0x1FFF00) | PMR_PRC_MAP_LO;
|
|
return;
|
|
case 0x83: // PRC Map Tile Base Middle
|
|
PMR_PRC_MAP_MID = val;
|
|
MinxPRC.PRCBGBase = (MinxPRC.PRCBGBase & 0x1F00F8) | (PMR_PRC_MAP_MID << 8);
|
|
return;
|
|
case 0x84: // PRC Map Tile Base High
|
|
PMR_PRC_MAP_HI = val & 0x1F;
|
|
MinxPRC.PRCBGBase = (MinxPRC.PRCBGBase & 0x00FFF8) | (PMR_PRC_MAP_HI << 16);
|
|
return;
|
|
case 0x85: // PRC Map Vertical Scroll
|
|
PMR_PRC_SCROLL_Y = val & 0x7F;
|
|
if (PMR_PRC_SCROLL_Y <= (MinxPRC.PRCMapTH*8-64)) MinxPRC.PRCMapPY = PMR_PRC_SCROLL_Y;
|
|
return;
|
|
case 0x86: // PRC Map Horizontal Scroll
|
|
PMR_PRC_SCROLL_X = val & 0x7F;
|
|
if (PMR_PRC_SCROLL_X <= (MinxPRC.PRCMapTW*8-96)) MinxPRC.PRCMapPX = PMR_PRC_SCROLL_X;
|
|
return;
|
|
case 0x87: // PRC Sprite Tile Base Low
|
|
PMR_PRC_SPR_LO = val & 0xC0;
|
|
MinxPRC.PRCSprBase = (MinxPRC.PRCSprBase & 0x1FFF00) | PMR_PRC_SPR_LO;
|
|
return;
|
|
case 0x88: // PRC Sprite Tile Base Middle
|
|
PMR_PRC_SPR_MID = val;
|
|
MinxPRC.PRCSprBase = (MinxPRC.PRCSprBase & 0x1F00C0) | (PMR_PRC_SPR_MID << 8);
|
|
return;
|
|
case 0x89: // PRC Sprite Tile Base High
|
|
PMR_PRC_SPR_HI = val & 0x1F;
|
|
MinxPRC.PRCSprBase = (MinxPRC.PRCSprBase & 0x00FFC0) | (PMR_PRC_SPR_HI << 16);
|
|
return;
|
|
case 0x8A: // PRC Counter
|
|
return;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Default PRC Rendering
|
|
//
|
|
|
|
static inline void MinxPRC_DrawSprite8x8_Mono(uint8_t cfg, int X, int Y, int DrawT, int MaskT)
|
|
{
|
|
int xC, xP, vaddr;
|
|
uint8_t vdata, sdata, smask;
|
|
uint8_t data;
|
|
|
|
// No point to proceed if it's offscreen
|
|
if ((X < -7) || (X >= 96)) return;
|
|
if ((Y < -7) || (Y >= 64)) return;
|
|
|
|
// Pre calculate
|
|
vaddr = 0x1000 + ((Y >> 3) * 96) + X;
|
|
|
|
// Process top columns
|
|
if (Y >= 0) {
|
|
for (xC=0; xC<8; xC++) {
|
|
if ((X >= 0) && (X < 96)) {
|
|
xP = (cfg & 0x01) ? (7 - xC) : xC;
|
|
|
|
vdata = MinxPRC_OnRead(0, vaddr + xC);
|
|
sdata = MinxPRC_OnRead(0, MinxPRC.PRCSprBase + (DrawT * 8) + xP);
|
|
smask = MinxPRC_OnRead(0, MinxPRC.PRCSprBase + (MaskT * 8) + xP);
|
|
|
|
if (cfg & 0x02) {
|
|
sdata = PRCInvertBit[sdata];
|
|
smask = PRCInvertBit[smask];
|
|
}
|
|
if (cfg & 0x04) sdata = ~sdata;
|
|
|
|
data = vdata & ((smask << (Y & 7)) | (0xFF >> (8 - (Y & 7))));
|
|
data |= (sdata & ~smask) << (Y & 7);
|
|
|
|
MinxPRC_OnWrite(0, vaddr + xC, data);
|
|
}
|
|
X++;
|
|
}
|
|
X -= 8;
|
|
}
|
|
|
|
// Calculate new vaddr;
|
|
vaddr += 96;
|
|
|
|
// Process bottom columns
|
|
if ((Y < 56) && (Y & 7)) {
|
|
for (xC=0; xC<8; xC++) {
|
|
if ((X >= 0) && (X < 96)) {
|
|
xP = (cfg & 0x01) ? (7 - xC) : xC;
|
|
|
|
vdata = MinxPRC_OnRead(0, vaddr + xC);
|
|
sdata = MinxPRC_OnRead(0, MinxPRC.PRCSprBase + (DrawT * 8) + xP);
|
|
smask = MinxPRC_OnRead(0, MinxPRC.PRCSprBase + (MaskT * 8) + xP);
|
|
|
|
if (cfg & 0x02) {
|
|
sdata = PRCInvertBit[sdata];
|
|
smask = PRCInvertBit[smask];
|
|
}
|
|
if (cfg & 0x04) sdata = ~sdata;
|
|
|
|
data = vdata & ((smask >> (8-(Y & 7))) | (0xFF << (Y & 7)));
|
|
data |= (sdata & ~smask) >> (8-(Y & 7));
|
|
|
|
MinxPRC_OnWrite(0, vaddr + xC, data);
|
|
}
|
|
X++;
|
|
}
|
|
}
|
|
}
|
|
|
|
void MinxPRC_Render_Mono(void)
|
|
{
|
|
int xC, yC, tx, ty, ltileidxaddr, tileidxaddr, outaddr;
|
|
int tiletopaddr = 0, tilebotaddr = 0;
|
|
uint8_t data;
|
|
|
|
int SprTB, SprAddr;
|
|
int SprX, SprY, SprC;
|
|
int SprFX, SprFY;
|
|
|
|
if (PRCRenderBD) {
|
|
for (xC=0x1000; xC<0x1300; xC++) MinxPRC_OnWrite(0, xC, 0x00);
|
|
}
|
|
|
|
if ((PRCRenderBG) && (PMR_PRC_MODE & 0x02)) {
|
|
outaddr = 0x1000;
|
|
ltileidxaddr = -1;
|
|
for (yC=0; yC<8; yC++) {
|
|
ty = (yC << 3) + MinxPRC.PRCMapPY;
|
|
for (xC=0; xC<96; xC++) {
|
|
tx = xC + MinxPRC.PRCMapPX;
|
|
tileidxaddr = 0x1360 + (ty >> 3) * MinxPRC.PRCMapTW + (tx >> 3);
|
|
|
|
// Read tile index
|
|
if (ltileidxaddr != tileidxaddr) {
|
|
tiletopaddr = MinxPRC.PRCBGBase + (MinxPRC_OnRead(0, tileidxaddr) * 8);
|
|
tilebotaddr = MinxPRC.PRCBGBase + (MinxPRC_OnRead(0, tileidxaddr + MinxPRC.PRCMapTW) * 8);
|
|
ltileidxaddr = tileidxaddr;
|
|
}
|
|
|
|
// Read tile data
|
|
data = (MinxPRC_OnRead(0, tiletopaddr + (tx & 7)) >> (ty & 7))
|
|
| (MinxPRC_OnRead(0, tilebotaddr + (tx & 7)) << (8 - (ty & 7)));
|
|
|
|
// Write to VRAM
|
|
MinxPRC_OnWrite(0, outaddr++, (PMR_PRC_MODE & 0x01) ? ~data : data);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((PRCRenderSpr) && (PMR_PRC_MODE & 0x04)) {
|
|
SprAddr = 0x1300 + (24 * 4);
|
|
do {
|
|
SprC = MinxPRC_OnRead(0, --SprAddr);
|
|
SprTB = MinxPRC_OnRead(0, --SprAddr) * 8;
|
|
SprY = (MinxPRC_OnRead(0, --SprAddr) & 0x7F) - 16;
|
|
SprX = (MinxPRC_OnRead(0, --SprAddr) & 0x7F) - 16;
|
|
if (SprC & 0x08) {
|
|
SprFX = SprC & 0x01 ? 8 : 0;
|
|
SprFY = SprC & 0x02 ? 8 : 0;
|
|
MinxPRC_DrawSprite8x8_Mono(SprC, SprX + SprFX, SprY + SprFY, SprTB+2, SprTB);
|
|
MinxPRC_DrawSprite8x8_Mono(SprC, SprX + SprFX, SprY + 8 - SprFY, SprTB+3, SprTB+1);
|
|
MinxPRC_DrawSprite8x8_Mono(SprC, SprX + 8 - SprFX, SprY + SprFY, SprTB+6, SprTB+4);
|
|
MinxPRC_DrawSprite8x8_Mono(SprC, SprX + 8 - SprFX, SprY + 8 - SprFY, SprTB+7, SprTB+5);
|
|
}
|
|
} while (SprAddr > 0x1300);
|
|
}
|
|
}
|
|
|
|
void MinxPRC_CopyToLCD(void)
|
|
{
|
|
MinxLCD_LCDWritefb(MinxPRC_LCDfb);
|
|
/*
|
|
// Can't be used with the new color mode support for LCD
|
|
int i, j;
|
|
MinxLCD_LCDWriteCtrl(0xEE);
|
|
for (i=0; i<8; i++) {
|
|
MinxLCD_LCDWriteCtrl(0xB0 + i);
|
|
MinxLCD_LCDWriteCtrl(0x00);
|
|
MinxLCD_LCDWriteCtrl(0x10);
|
|
for (j=0; j<96; j++) {
|
|
MinxLCD_LCDWrite(MinxPRC_OnRead(0, 0x1000 + (i * 96) + j));
|
|
}
|
|
}
|
|
*/
|
|
}
|