OK, so I've given up on the 3.5" diskette and attached an honest-to-god
RX33 drive to the thing. This lets me bring up the bootloader, at which
point I can run rom()edlabel to bring up edlabel. I have a big ol' Fujitsu
600MB disk (chosen because I know it works) connected to the machine,
jumpered as drive 2. Playing with edlabel, I find it seems to want to
refer to this drive as sd(2,0,0) rather than the documented
device(ctrl,adapter,disk,part). When I give edlabel sd(2,0,0), I see
a bunch of "phase mismatch" messages and "SCSI: busy error" messages.
During all this, the light on the drive blinks, so I know it's selecting the
drive. A log is attached. Does it ring any bells?

Roger ivie
ivie@cc.usu.edu
<<<<<<<<<<<<<<<<<<<<<<<<<< snip, snip >>>>>>>>>>>>>>>>>>>>>>>>
Label which disk? sd(2,0,0)
sdopen: ctlr=0 unit=2 part=0
sdstrategy(0,2): size=8192 blk=0 nblk=16
scsi_tt_read: ctlr 0, slave 2, len 8192, blk 0, nblk 16
sc_rdwt: op 3, block 0, ram 10d994, len 16, sc_adr 4, lun 0
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
SCSI READ, block 0 failed even after retries
sd(0,2,0): block=0, error=0xfffffffe
scsi_tt_read: ctlr 0, slave 2, len 8192, blk 0, nblk 16
sc_rdwt: op 3, block 0, ram 10d994, len 16, sc_adr 4, lun 0
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
SCSI READ, block 0 failed even after retries
sd(0,2,0): block=0, error=0xfffffffe
scsi_tt_read: ctlr 0, slave 2, len 8192, blk 0, nblk 16
sc_rdwt: op 3, block 0, ram 10d994, len 16, sc_adr 4, lun 0
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
exec_scsi_low(0x10f998, 4)
sc_wait_bus_free()
sc_select(4)
sc_dma_setup(4, 1083040)
sc_receive()
begin: ca/ca scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1112784)
scsi_interrupt()
phase mismatch
sc_dma_setup(3, 1082748)
scsi_interrupt()
target deasserted BSY?
isr_ret: 2 (ISR_NOTDONE: 0)
sc_reset()
SCSI: busy error
SCSI READ, block 0 failed even after retries
sd(0,2,0): block=0, error=0xfffffffe
cannot read label block
Label which disk?