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rainbow: added fill-mode

This commit is contained in:
contact@brokestudio.fr 2023-12-17 16:21:15 +01:00
parent 145bec6cf4
commit 4e7684f085
1 changed files with 27 additions and 0 deletions
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27
src/boards/rainbow.cpp
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@ -113,6 +113,9 @@ static int CHRRAMSIZE = 0; // max 512 KiB
extern uint8 *ExtraNTARAM;
uint8 fill_mode_tile;
uint8 fill_mode_attr;
static uint8 RNBWbattery = 0;
static uint8 reset_step = 0;
@ -688,6 +691,9 @@ static DECLFW(RNBW_0x4100Wr) {
case 0x4121:
RNBWHackBGBankOffset = V & 0x1f;
break;
// Fill-mode
case 0x4124: fill_mode_tile = V; break;
case 0x4125: fill_mode_attr = V & 0x03; break;
// Nametables bank
case 0x4126: RNBWHackNTbank[0] = V; Sync(); break;
case 0x4127: RNBWHackNTbank[1] = V; Sync(); break;
@ -898,15 +904,30 @@ uint8 FASTCALL RainbowPPURead(uint32 A) {
// Attributes
//return FCEUPPU_GetAttr(ntnum, xt, yt);
// Fill-mode?
if(RNBWHackNTcontrol[4] & 0x20)
return fill_mode_attr | fill_mode_attr << 2 | fill_mode_attr << 4 | fill_mode_attr << 6;
A &= ~(0x1C << 1); //mask off VT
A |= (linetile & 0x1C) << 1; //mask on adjusted VT
return FPGA_RAM[RNBWHackNTbank[4] * 0x400 + (A & 0x3ff)];
} else {
// Fill-mode?
uint8 NT = (A >> 10) & 0x03;
if(RNBWHackNTcontrol[NT] & 0x20)
return fill_mode_attr | fill_mode_attr << 2 | fill_mode_attr << 4 | fill_mode_attr << 6;
return FCEUPPU_GetAttr(ntnum, xt, yt);
}
} else { // tiles
if(split) {
// Tiles
// Fill-mode?
if(RNBWHackNTcontrol[4] & 0x20)
return fill_mode_tile;
A &= ~((0x1F << 5) | (1 << 0xB)); //mask off VT and V
A |= (linetile & 31) << 5; //mask on adjusted VT (V doesnt make any sense, I think)
@ -916,6 +937,12 @@ uint8 FASTCALL RainbowPPURead(uint32 A) {
return FPGA_RAM[RNBWHackNTbank[4] * 0x400 + (A & 0x3ff)];
} else {
// Fill-mode?
uint8 NT = (A >> 10) & 0x03;
if (RNBWHackNTcontrol[NT] & 0x20)
return fill_mode_tile;
return vnapage[(A >> 10) & 0x3][A & 0x3FF];
}
}