RADEON_RBBM_STATUS
int slots = INREG( ai->regs, RADEON_RBBM_STATUS ) & RADEON_RBBM_FIFOCNT_MASK;
if( (INREG( di->regs, RADEON_RBBM_STATUS ) & RADEON_RBBM_ACTIVE) == 0 ) {
INREG( di->regs, RADEON_RBBM_STATUS ),
int slots = INREG( di->regs, RADEON_RBBM_STATUS ) & RADEON_RBBM_FIFOCNT_MASK;