Returns true on stalling SIGNAL
| 11 | |
| 12 | // Returns true on stalling SIGNAL |
| 13 | bool Gif_HandlerAD(u8* pMem) |
| 14 | { |
| 15 | u32 reg = pMem[8]; |
| 16 | u32* data = (u32*)pMem; |
| 17 | if (reg >= GIF_A_D_REG_BITBLTBUF && reg <= GIF_A_D_REG_TRXREG) |
| 18 | { |
| 19 | vif1.transfer_registers[reg - GIF_A_D_REG_BITBLTBUF] = *(u64*)pMem; |
| 20 | } |
| 21 | else if (reg == GIF_A_D_REG_TRXDIR) |
| 22 | { // TRXDIR |
| 23 | if ((pMem[0] & 3) == 1) |
| 24 | { // local -> host |
| 25 | u8 bpp = 32; // Onimusha does TRXDIR without BLTDIVIDE first, assume 32bit |
| 26 | switch (vif1.BITBLTBUF.SPSM & 7) |
| 27 | { |
| 28 | case 0: |
| 29 | bpp = 32; |
| 30 | break; |
| 31 | case 1: |
| 32 | bpp = 24; |
| 33 | break; |
| 34 | case 2: |
| 35 | bpp = 16; |
| 36 | break; |
| 37 | case 3: |
| 38 | bpp = 8; |
| 39 | break; |
| 40 | default: // 4 is 4 bit but this is forbidden |
| 41 | Console.Error("Illegal format for GS upload: SPSM=0%02o", vif1.BITBLTBUF.SPSM); |
| 42 | break; |
| 43 | } |
| 44 | // qwords, rounded down; any extra bits are lost |
| 45 | // games must take care to ensure transfer rectangles are exact multiples of a qword |
| 46 | vif1.GSLastDownloadSize = vif1.TRXREG.RRW * vif1.TRXREG.RRH * bpp >> 7; |
| 47 | } |
| 48 | } |
| 49 | else if (reg == GIF_A_D_REG_SIGNAL) |
| 50 | { // SIGNAL |
| 51 | if (CSRreg.SIGNAL) |
| 52 | { // Time to ignore all subsequent drawing operations. |
| 53 | GUNIT_WARN(Color_Orange, "GIF Handler - Stalling SIGNAL"); |
| 54 | if (!gifUnit.gsSIGNAL.queued) |
| 55 | { |
| 56 | gifUnit.gsSIGNAL.queued = true; |
| 57 | gifUnit.gsSIGNAL.data[0] = data[0]; |
| 58 | gifUnit.gsSIGNAL.data[1] = data[1]; |
| 59 | return true; // Stalling SIGNAL |
| 60 | } |
| 61 | } |
| 62 | else |
| 63 | { |
| 64 | GUNIT_WARN("GIF Handler - SIGNAL"); |
| 65 | GSSIGLBLID.SIGID = (GSSIGLBLID.SIGID & ~data[1]) | (data[0] & data[1]); |
| 66 | if (!GSIMR.SIGMSK) |
| 67 | gsIrq(); |
| 68 | CSRreg.SIGNAL = true; |
| 69 | } |
| 70 | } |
no test coverage detected