> I have a DLT changer hooked up "for testing" on my machine.  Works pretty 
> decent, though I don't have a proper changer script for it.  (i.e. I manually
> run chio)  Here is what it looks like on my 1.2/i386 machine:


Same here. I hooked up a Digital TZ887 on a SS4. Worked right out of the box:

mainbus0 (root): SUNW,SPARCstation-4
cpu0 at mainbus0: FMI,MB86904 @ 85 MHz, on-chip FPU
[...]
dma1 at sbus0 slot 0 offset 0x81000: rev esc
esp1 at dma1 slot 0x0 offset 0x80000 pri 5: ESP200 40Mhz, target 7
scsibus1 at esp1
probe(esp1:5:0): max sync rate 10.00Mb/s
st0 at scsibus1 targ 5 lun 0: <DEC, TZ887    (C) DEC, CC34> SCSI2 1/sequential removable
st0: drive empty
ch0 at scsibus1 targ 5 lun 1: <DEC, TZ Media Changer, CC34> SCSI2 8/changer removable
ch0: 7 slots, 1 drive, 1 picker