get_idx_reg
retval = get_idx_reg(dev->regs, REG_FRAME) & 0x03ff;
scratch = get_idx_reg(dev->regs, SCRATCH);
scratch = get_idx_reg(dev->regs, SCRATCH);
fsmvalue = get_idx_reg(dev->regs, SCRATCH) &
dev->chiprev = get_idx_reg(dev->regs, REG_CHIPREV) & 0xffff;