DEC_COMMAND_SHIFT
dec |= (DEC_COMMAND_BLT << DEC_COMMAND_SHIFT) |
dec |= (DEC_COMMAND_BLT << DEC_COMMAND_SHIFT) |
dec |= (DEC_COMMAND_RECT << DEC_COMMAND_SHIFT) |
dec |= (DEC_COMMAND_RECT << DEC_COMMAND_SHIFT) |
dec |= (DEC_COMMAND_BLT << DEC_COMMAND_SHIFT) |