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Diffstat (limited to 'src/mame/machine/kaneko_calc3.cpp')
-rw-r--r--src/mame/machine/kaneko_calc3.cpp15
1 files changed, 2 insertions, 13 deletions
diff --git a/src/mame/machine/kaneko_calc3.cpp b/src/mame/machine/kaneko_calc3.cpp
index 3ddfa5d6ede..572fa89fdba 100644
--- a/src/mame/machine/kaneko_calc3.cpp
+++ b/src/mame/machine/kaneko_calc3.cpp
@@ -1224,18 +1224,7 @@ const int16_t kaneko_calc3_device::s_keydata[] = {
uint8_t kaneko_calc3_device::shift_bits(uint8_t dat, int bits)
{
- switch (bits & 7)
- {
- default:
- case 0: return bitswap<8>(dat, 7,6,5,4,3,2,1,0);
- case 1: return bitswap<8>(dat, 6,5,4,3,2,1,0,7);
- case 2: return bitswap<8>(dat, 5,4,3,2,1,0,7,6);
- case 3: return bitswap<8>(dat, 4,3,2,1,0,7,6,5);
- case 4: return bitswap<8>(dat, 3,2,1,0,7,6,5,4);
- case 5: return bitswap<8>(dat, 2,1,0,7,6,5,4,3);
- case 6: return bitswap<8>(dat, 1,0,7,6,5,4,3,2);
- case 7: return bitswap<8>(dat, 0,7,6,5,4,3,2,1);
- }
+ return (dat << (bits & 7)) | (dat >> (8 - (bits & 7)));
}
int kaneko_calc3_device::decompress_table(int tabnum, uint8_t* dstram, int dstoffset)
@@ -1433,7 +1422,7 @@ int kaneko_calc3_device::decompress_table(int tabnum, uint8_t* dstram, int dstof
}
}
- if(local_counter > 1)
+ if (local_counter > 1)
{
space.write_byte(dstoffset + i, dat);