CCR1_NO_LOCK
write_cyrix_reg(CCR1, read_cyrix_reg(CCR1) | CCR1_NO_LOCK);
write_cyrix_reg(CCR1, read_cyrix_reg(CCR1) & ~CCR1_NO_LOCK);
write_cyrix_reg(CCR1, read_cyrix_reg(CCR1) | CCR1_NO_LOCK);
write_cyrix_reg(CCR1, read_cyrix_reg(CCR1) & ~CCR1_NO_LOCK);