cmn600_node_write8
node->nd_write8 = cmn600_node_write8;
cmn600_node_write8(node, reg, val);
cmn600_node_write8(node, reg, cmn600_node_read8(node, reg) | val);
cmn600_node_write8(node, reg, cmn600_node_read8(node, reg) & ~val);
cmn600_node_write8(node, reg, (cmn600_node_read8(node, reg) & ~mask) |