User`s manual

.BRD_ID
5-70
5
Refer to Appendix G for data on supported network controllers.
Board Number Half-Word containing the board number (in
BCD)
Board SufÞx Half-Word containing the ASCII board sufÞx
(e.g. XT, A, 20)
Options:
bits 0-3 Four bits containing CPU type:
CPU = 1; MPC620
CPU = 1; MPC601
CPU = 2; MPC602
CPU = 3; MPC603
CPU = 4; MPC604
bits 4-6 Three bits containing the Family type:
Fam = 2; MPC600 family
bits 7-31 The remaining bits deÞne various board speciÞc
options:
Bit 7 set = FPC present
Bit 8 set = MMU present
Bit 9 set = MMB present
Controller LUN The Logical Unit Number for the boot device
controller (refer to Appendices E and G)
Device LUN The Logical Unit Number for the boot device
(refer to Appendices E and G)
Device Type The device type of the boot device (refer to the
following table)
Option-2 Reserved for future use (zero in this
implementation)