diff options
| -rw-r--r-- | src/SPI.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/SPI.cpp b/src/SPI.cpp index 534f6ca..2c62a6a 100644 --- a/src/SPI.cpp +++ b/src/SPI.cpp @@ -528,6 +528,18 @@ void Reset() void WriteCnt(u16 val) { + // turning it off should clear chipselect + // TODO: confirm on hardware. libnds expects this, though. + if ((Cnt & (1<<15)) && !(val & (1<<15))) + { + switch (Cnt & 0x0300) + { + case 0x0000: SPI_Powerman::Hold = 0; break; + case 0x0100: SPI_Firmware::Hold = 0; break; + case 0x0200: SPI_TSC::DataPos = 0; break; + } + } + Cnt = (Cnt & 0x0080) | (val & 0xCF03); if (val & 0x0400) printf("!! CRAPOED 16BIT SPI MODE\n"); if (Cnt & (1<<7)) printf("!! CHANGING SPICNT DURING TRANSFER: %04X\n", val); |