diff options
Diffstat (limited to 'source/cpuaddr.h')
-rw-r--r-- | source/cpuaddr.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/source/cpuaddr.h b/source/cpuaddr.h index 34fb41b..91a0347 100644 --- a/source/cpuaddr.h +++ b/source/cpuaddr.h @@ -256,6 +256,11 @@ static void AbsoluteLong (AccessMode a, InternalOp op) long Addr; #ifdef FAST_LSB_WORD_ACCESS Addr = (*(uint32 *) CPU.PC) & 0xffffff; +#elif defined FAST_ALIGNED_LSB_WORD_ACCESS + if (((int) CPU.PC & 1) == 0) + Addr = (*(uint16 *) CPU.PC) + (*(CPU.PC + 2) << 16); + else + Addr = *CPU.PC + ((*(uint16 *) (CPU.PC + 1)) << 8); #else Addr = *CPU.PC + (*(CPU.PC + 1) << 8) + (*(CPU.PC + 2) << 16); #endif @@ -434,6 +439,11 @@ static void AbsoluteLongIndexedX (AccessMode a, InternalOp op) long Addr; #ifdef FAST_LSB_WORD_ACCESS Addr = (*(uint32 *) CPU.PC + ICPU.Registers.X.W) & 0xffffff; +#elif defined FAST_ALIGNED_LSB_WORD_ACCESS + if (((int) CPU.PC & 1) == 0) + Addr = ((*(uint16 *) CPU.PC) + (*(CPU.PC + 2) << 16) + ICPU.Registers.X.W) & 0xFFFFFF; + else + Addr = (*CPU.PC + ((*(uint16 *) (CPU.PC + 1)) << 8) + ICPU.Registers.X.W) & 0xFFFFFF; #else Addr = (*CPU.PC + (*(CPU.PC + 1) << 8) + (*(CPU.PC + 2) << 16) + ICPU.Registers.X.W) & 0xffffff; #endif |