I recently compiled and installed xcdplayer to try and get it working on my
sparc1.  Unfortunately, it just bombs out..  I'm starting it with:

xcdplayer -device /dev/cd0a

This is my dmesg output, at the bottom of the output, you will find where the
cd decided it didn't want to read, and spit out a bunch of crap.  (the scsi bus
reset itself!)

Anyhow.. just to confirm the drive isn't hosed.. I just (5 seconds ago) mounted
a iso9660 disk and read from it just fine.  (dunno what it was, came with some
PC)  As for the rest of this dmesg, I know Erik was collecting them, so.. here
you go.  ;)

NetBSD 1.3.2 (ALTAIR) #0: Thu Jun 18 07:47:09 MST 1998
    root@alshain:/usr/src/sys/arch/sparc/compile/ALTAIR
real mem = 25083904
avail mem = 22642688
using 128 buffers containing 524288 bytes of memory
bootpath: /sbus0/esp0/sd@0,0
mainbus0 (root): Opus 4/60
cpu0 at mainbus0: MB86900/1A or L64801 @ 20 MHz, WTL3170/2 FPU
cpu0: 64K byte write-through, 16 bytes/line, sw flush: cache enabled
memreg0 at mainbus0 ioaddr 0xf4000000
clock0 at mainbus0 ioaddr 0xf2000000: mk48t02 (eeprom)
timer0 at mainbus0 ioaddr 0xf3000000 delay constant 10
auxreg0 at mainbus0 ioaddr 0xf7400000
zs0 at mainbus0 ioaddr 0xf1000000 pri 12, softpri 6
zstty0 at zs0 channel 0
zstty1 at zs0 channel 1
zs1 at mainbus0 ioaddr 0xf0000000 pri 12, softpri 6
kbd0 at zs1 channel 0 (console)
ms0 at zs1 channel 1
fdc0 at mainbus0 ioaddr 0xf7200000 pri 11, softpri 4: chip 82077
audioamd0 at mainbus0 ioaddr 0xf7201000 pri 13, softpri 4
audio0 at audioamd0
sbus0 at mainbus0 ioaddr 0xf8000000: clock = 20 MHz
dma0 at sbus0 slot 0 offset 0x400000: rev 1
esp0 at sbus0 slot 0 offset 0x800000 pri 3: ESP100A, 20MHz, SCSI ID 7
scsibus0 at esp0: 8 targets
probe(esp0:3:0): max sync rate 4.03Mb/s
sd0 at scsibus0 targ 3 lun 0: <MAXTOR, LXT-213S, 4.55> SCSI1 0/direct fixed
sd0: 202MB, 1310 cyl, 7 head, 45 sec, 512 bytes/sect x 415436 sectors
st0 at scsibus0 targ 4 lun 0: <WANGTEK, 5150ES SCSI ES41, C45X> SCSI1
1/sequential removable
st0: rogue, drive empty
probe(esp0:6:0): max sync rate 4.03Mb/s
cd0 at scsibus0 targ 6 lun 0: <SONY, CD-ROM CDU-55S, 1.0t> SCSI2 5/cdrom
removable
le0 at sbus0 slot 0 offset 0xc00000 pri 5: address 08:00:20:e1:33:70
le0: 8 receive buffers, 2 transmit buffers
cgsix0 at sbus0 slot 1 offset 0x0: SUNW,501-1481, 1152 x 900, rev 2 (console)
cgsix0: attached to /dev/fb
root on sd0a dumps on sd0b
root file system type: ffs
cd0(esp0:6:0): esp0: timed out [ecb 0xf06298d8 (flags 0x3, dleft 42, stat 0)],
<state 4, nexus 0xf06298d8, phase(l 3, c 3, p 3)
, resid 26, msg(q 0,o 0) >
cd0(esp0:6:0): esp0: timed out [ecb 0xf06298d8 (flags 0x43, dleft 42, stat 0)],
<state 4, nexus 0xf06298d8, phase(l 3, c 3, p 3
), resid 26, msg(q 20,o 0) > AGAIN
esp0: SCSI bus reset
sd0(esp0:3:0): esp0: timed out [ecb 0xf062990c (flags 0x1, dleft 400, stat 0)],
<state 2, nexus 0xf062990c, phase(l 6, c 101, p
 101), resid 26, msg(q 20,o 0) >
sd0(esp0:3:0): esp0: timed out [ecb 0xf062990c (flags 0x41, dleft 400, stat
0)], <state 2, nexus 0xf062990c, phase(l 6, c 101, 
p 101), resid 26, msg(q 20,o 0) > AGAIN
sd0(esp0:3:0): max sync rate 4.03Mb/s
cd0(esp0:6:0): max sync rate 4.03Mb/s
cd0(esp0:6:0): unit attention, data = 00 00 00 00 29 00 00 00 00 00
cd0(esp0:6:0): unit attention, data = 00 00 00 00 28 00 00 00 00 00

---
Tim Rightnour    -  root@garbled.net
http://www.zynetwc.com/~garbled/garbled.html