You're right! I set that option (fur sure, this time) and it boots just fine

It's a shame that if it ever needs a reinstall I'll have to remember to remove the card in order to do so (and what are the chances of that

but overall everything's good!
Code:
Location: /hw/module/001c01/node
Part:030-1707-004;Name:IP34;Serial:NCJ502;Revision:-A;Group:ff;Capability:ffffffff;Variety:ff;Laser:000000005425e812;
Location: /hw/module/001c01/node/cpubus/0
Part:030-1730-002;Name:IP34PIMM;Serial:NCM049;Revision:-E;Group:ff;Capability:ffffffff;Variety:ff;Laser:000000005427f219;
Location: /hw/module/001c01/Ibrick/xtalk/13
Part:030-1726-005;Name:ASTODY;Serial:NAT834;Revision:-A;Group:ff;Capability:ffffffff;Variety:ff;Laser:0000000053f9d430;
Location: /hw/module/001c01/Ibrick/xtalk/14
Part:030-1707-004;Name:IP34;Serial:NCJ502;Revision:-A;Group:ff;Capability:ffffffff;Variety:ff;Laser:000000005425e812;
Location: /hw/module/001c01/Ibrick/xtalk/15
Part:030-1707-004;Name:IP34;Serial:NCJ502;Revision:-A;Group:ff;Capability:ffffffff;Variety:ff;Laser:000000005425e812;
1 600 MHZ IP35 Processor
CPU: MIPS R14000 Processor Chip Revision: 2.4
FPU: MIPS R14010 Floating Point Chip Revision: 2.4
Location: /hw/module/001c01/node/cpubus/0/a
CPU 0 at Module 001c01/Slot 0/Slice A: 600 Mhz MIPS R14000 Processor Chip (enabled)
Processor revision: 2.4. Scache: Size 4 MB Speed 300 Mhz Tap 0xa
Main memory size: 4096 Mbytes
Instruction cache size: 32 Kbytes
Data cache size: 32 Kbytes
Secondary unified instruction/data cache size: 4 Mbytes
Location: /hw/module/001c01/node/memory
Memory at Module 001c01/Slot 0: 4096 MB (enabled)
Bank 0 contains 1024 MB (Premium) DIMMS (enabled)
Bank 1 contains 1024 MB (Premium) DIMMS (enabled)
Bank 2 contains 1024 MB (Premium) DIMMS (enabled)
Bank 3 contains 1024 MB (Premium) DIMMS (enabled)
Integral SCSI controller 4: Version IEEE1394 SBP2
Integral SCSI controller 3: Version SAS/SATA LS1064
Integral SCSI controller 0: Version QL12160, low voltage differential
Disk drive: unit 1 on SCSI controller 0 (unit 1)
Integral SCSI controller 1: Version QL12160, single ended
CDROM: unit 6 on SCSI controller 1
IOC3/IOC4 serial port: tty1
IOC3/IOC4 serial port: tty2
IOC3 parallel port: plp1
Graphics board: V12
Gigabit Ethernet: tg1, module 001c01, PCI bus 2 slot 2
Integral Fast Ethernet: ef0, version 1, module 001c01, pci 4
Iris Audio Processor: version MAD revision 1, number 1
PCI Adapter ID (vendor 0x1000, device 0x0050) PCI slot 1
PCI Adapter ID (vendor 0x14e4, device 0x1645) PCI slot 2
PCI Adapter ID (vendor 0x1077, device 0x1216) PCI slot 1
PCI Adapter ID (vendor 0x3388, device 0x0021) PCI slot 2
PCI Adapter ID (vendor 0x1412, device 0x1724) PCI slot 3
PCI Adapter ID (vendor 0x10a9, device 0x0003) PCI slot 4
PCI Adapter ID (vendor 0x1045, device 0xc861) PCI slot 5
PCI Adapter ID (vendor 0x1033, device 0x0035) PCI slot 8
PCI Adapter ID (vendor 0x1033, device 0x0035) PCI slot 8
PCI Adapter ID (vendor 0x1033, device 0x00e0) PCI slot 8
PCI Adapter ID (vendor 0x104c, device 0x8024) PCI slot 12
Location: /hw/module/001c01/node/hub
HUB in Module 001c01/Slot 0: Revision 2 Speed 200.00 Mhz (enabled)
Location: /hw/module/001c01/node/prom
IP35prom in Module 001c01/Slot n0: Revision 6.211
DMediaPro DM10 FW option: unit 0, revision 1.1.0
USB controller: type OHCI
USB controller: type OHCI
USB controller: type OHCI
This thread has some interesting notes, but I'm still unclear as to what the "well-known" '
bridge/xbridge issue of RRB thrashing' actually is, and whether I should be at all concerned...