For about a week two years ago, I had this CD-ROM burner working
just great.  It stopped working after an 'upgrade' and hasn't worked
since.  I've decided to re-apply myself to the writer (I need to
start making CDs again) and I'm running into all kinds of trouble.

Part of the mojo is to make sure I call for the right device, which
is apparently called /dev/cd0d:2.0.  That generates an error about 
"Operation not supported by device."  

Currently, the drive is in 'WORM' mode, which I suspect is part of
the problem (there used to be a problem with identifying the
CD-WRITER with the CD-READER, so we used the WORM drive, not CD-ROM
commands).  This was the correct mode when I burned CDs before.
Does anyone know if the new CD-ROM code in 1.4.2X allows for writing
as well as reading?

Here is the dmesg output, along with the error messages from the SCSIVERBOSE
options.  If anyone can decypher this, I'd like to hear from you.

NetBSD 1.4U (GENERIC) #1: Wed Mar 15 17:27:57 CET 2000
    tron@lyssa.zhadum.de:/src/NetBSD-current/src/sys/arch/i386/compile/GENERIC
cpu0: family 5 model 6 step 2
cpu0: AMD K6 (586-class)
total memory = 65152 KB
avail memory = 55980 KB
using 840 buffers containing 3360 KB of memory
BIOS32 rev. 0 found at 0xfb040
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82439TX System Controller (MTXC) (rev. 0x01)
pcib0 at pci0 dev 7 function 0
pcib0: Intel 82371AB PCI-to-ISA Bridge (PIIX4) (rev. 0x01)
pciide0 at pci0 dev 7 function 1: Intel 82371AB IDE controller (PIIX4)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
wd0 at pciide0 channel 0 drive 0: <WDC AC22500L>
wd0: drive supports 16-sector pio transfers, lba addressing
wd0: 2441 MB, 4960 cyl, 16 head, 63 sec, 512 bytes/sect x 4999680 sectors
wd0: 32-bits data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
pciide0: secondary channel wired to compatibility mode
pciide0: disabling secondary channel (no drives)
uhci0 at pci0 dev 7 function 2: Intel 82371AB USB Host Controller (PIIX4) (rev. 0x01)
uhci0: interrupting at irq 12
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
Intel 82371AB Power Management Controller (PIIX4) (miscellaneous bridge, revision 0x01) at pci0 dev 7 function 3 not configured
ahc1 at pci0 dev 9 function 0
ahc1: interrupting at irq 12
ahc1: aic7880 Single Channel A, SCSI Id=7, 16/255 SCBs
scsibus0 at ahc1 channel 0: 8 targets, 8 luns per target
vga1 at pci0 dev 10 function 0: Trident Microsystems TGUI 9660 (rev. 0xd3)
wsdisplay0 at vga1: console (80x25, vt100 emulation)
ne2 at pci0 dev 11 function 0: RealTek 8029 Ethernet
ne2: 10base2, 10baseT, 10baseT-FDX, auto, default [0x00 0x30] auto
ne2: supplying EUI64: 00:e0:7d:ff:fe:72:91:51
ne2: Ethernet address 00:e0:7d:72:91:51
ne2: interrupting at irq 12
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask ff65 netmask ff65 ttymask ffe7
scsibus0: waiting 2 seconds for devices to settle...
ahc1: target 2 synchronous at 10.0MHz, offset = 0xf
cd0 at scsibus0 targ 2 lun 0: <SONY, CD-R   CDU926S, 1.1f> SCSI2 5/cdrom removable
ahc1: target 6 synchronous at 4.0MHz, offset = 0xb
st0 at scsibus0 targ 6 lun 0: <EXABYTE, EXB-850085QANXRC, 06X0> SCSI2 1/sequential removable
st0: drive empty
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
IP Filter: v3.3.8 initialized.  Default = pass all, Logging = enabled
ne2: starting DAD for fe80:0001::02e0:7dff:fe72:9151
ne2: DAD complete for fe80:0001::02e0:7dff:fe72:9151 - no duplicates found
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
ahc1: target 2 synchronous at 10.0MHz, offset = 0xf
cd0(ahc1:2:0):  Check Condition on CDB: 0x25 00 00 00 00 00 00 00 00 00
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  ASC 0x89 ASCQ 0x00

ahc1: target 2 synchronous at 10.0MHz, offset = 0xf
cd0(ahc1:2:0):  Check Condition on CDB: 0x25 00 00 00 00 00 00 00 00 00
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  ASC 0x89 ASCQ 0x00

ahc1: target 2 synchronous at 10.0MHz, offset = 0xf
cd0(ahc1:2:0):  Check Condition on CDB: 0x25 00 00 00 00 00 00 00 00 00
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  ASC 0x89 ASCQ 0x00

ahc1: target 2 synchronous at 10.0MHz, offset = 0xf
cd0(ahc1:2:0):  Check Condition on CDB: 0x25 00 00 00 00 00 00 00 00 00
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  ASC 0x89 ASCQ 0x00