Having had my pc164 turned off for a few days, tonight I turned it back on.

My prize for doing this was a "machine check" whilst probing ahc0.

Several 'init's later, plus a cold boot...

Now it sees ahc0 (but refuses to do anything with it) and gets other
errors with ATA.  What's going on ?

darren

NetBSD 1.4.1 (GENERIC) #0: Mon Aug  9 02:30:53 PDT 1999
    ross@sutekh:/usr/src/sys/arch/alpha/compile/GENERIC
Digital AlphaPC 164 500 MHz
8192 byte page size, 1 processor.
real mem = 134217728 (2531328 reserved for PROM, 131686400 used by NetBSD)
avail mem = 111886336
using 1607 buffers containing 13164544 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21164A-2 (pass 2)
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (ALCOR/ALCOR2), pass 3
cia0: extended capabilities: 21<DWEN,BWEN>
cia0: using BWX for PCI config access
pci0 at cia0 bus 0
pci0: i/o enabled, memory enabled
de0 at pci0 dev 5 function 0
de0: interrupting at eb164 irq 2
de0: DEC DE500-BA 21143 [10-100Mb/s] pass 3.0
de0: address 00:00:f8:09:4f:14
de0: enabling 100baseTX port
ahc0 at pci0 dev 6 function 0: unable to map registers
vga0 at pci0 dev 7 function 0: Matrox MGA Millennium 2064W ("Storm") (rev. 0x01)
wsdisplay0 at vga0
sio0 at pci0 dev 8 function 0: Intel 82378ZB System I/O (SIO) (rev. 0x43)
pciide0 at pci0 dev 11 function 0: CMD Technology PCI0646
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
wd0 at pciide0 channel 0 drive 0: <ST51270A>
wd0: drive supports 32-sector pio transfers, lba addressing
wd0: 1223MB, 2485 cyl, 16 head, 63 sec, 512 bytes/sect x 2504880 sectors
wd0: 32-bits data port
wd0: drive supports PIO mode 4, DMA mode 2
pciide0: secondary channel wired to compatibility mode
atapibus0 at pciide0 channel 1
cd0 at atapibus0 drive 0: <VI-DATA 64XM, MT1102  Firmware, VER 5.1> type 5 cdrom removable
cd0: 32-bits data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
isa0 at sio0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com0: console
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
lpt0 at isa0 port 0x3bc-0x3bf irq 7
pckbc0 at isa0 port 0x60-0x64
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
isabeep0 at pcppi0
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
root on wd0a dumps on wd0b
pciide0:0:0: lost interrupt
        type: ata
        c_bcount: 512
        c_skip: 0
pciide0:0:0: device timeout, c_bcount=512, c_skip0
pciide0:0:0: Bus-Master DMA error: missing interrupt, status=0x0
wd0c: device timeout reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:0:0: lost interrupt
        type: ata
        c_bcount: 512
        c_skip: 0
pciide0:0:0: device timeout, c_bcount=512, c_skip0
pciide0:0:0: Bus-Master DMA error: missing interrupt, status=0x0
wd0: transfer error, downgrading to PIO mode 4
wd0(pciide0:0:0): using PIO mode 4
wd0c: device timeout reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
wd0: soft error (corrected)
WARNING: clock gained 11 days -- CHECK AND RESET THE DATE!
root file system type: ffs