+ short pc_cputype; /* cpu type code */
+ short pc_nnexus; /* number of nexus slots */
+ struct nexus *pc_nexbase; /* base of nexus space */
+/* we should be able to have just one address for the unibus memories */
+/* and calculate successive addresses by adding to the base, but the 750 */
+/* doesn't obey the sensible rule: uba1 has a lower address than uba0! */
+ caddr_t *pc_umaddr; /* unibus memory addresses */
+ short pc_nubabdp; /* number of bdp's per uba */
+ short pc_haveubasr; /* have uba status register */
+/* the 750 has some slots which don't promise to tell you their types */
+/* if this pointer is non-zero, then you get the type from this array */
+/* rather than from the (much more sensible) low byte of the config register */
+ short *pc_nextype; /* botch */