[SPARCbook] Wanted ADTX adapter

[Michael]

Hello,

> >> I'm looking for a adtx 2.5" hd adapter to upgrade my 3gx If anyone
> >> has a spare??  Would consider hard disk as well.  Does anyone know
> >> the maximum size hard disk that can be used with these?
> >
> > IIRC the maximum disk size with these things is 8GB. It certainly
> > worked for me with a 6GB Toshiba but others with bigger disks
> > reported problems.
>
> There were at least two different models of these IDE<->SCSI adapters.
> The earlier ones had the 8 gig limit, and were reportedly slow.  There
> was a newer one that supported more of the ATA extensions & speeds,
> which got the disks up to at least the SCSI-2 speed of the bus they
> were connected to.

Then I have the slow kind:
sd0 at scsibus0 target 3 lun 0: <ADTX, AXSITS2532U 011D, E4.0> disk
fixed
sd0: fabricating a geometry
sd0: 2067 MB, 2067 cyl, 64 head, 32 sec, 512 bytes/sect x 4233600
sectors
sd0: sync (200.00ns offset 7), 8-bit (5.000MB/s) transfers
( swapped out the 6GB drive because I had SCSI DMA problems - turned out
to be bad RAM though so I'll put it back in ) As you can see it does
only 5MB/s ( not that the drive could saturate even that... )

> They also did not have the 8 gig limit.  I don't know how
> large you could go, but the one I got let me use a 20 gig drive w/o
> any problems:
>
> $ uname -a
> SunOS tadpole 5.6 Generic_105181-34 sun4m sparc Tadpole_S3GX
>
> $ df -k
> Filesystem           1k-blocks      Used Available Use% Mounted on
> /dev/dsk/c0t3d0s0        61615     17960     37494  33% /
> /dev/dsk/c0t3d0s4     18641505   5815821  12639269  32% /usr
> /dev/dsk/c0t3d0s3       246463     45172    176645  21% /var
> swap                    234172         8    234164   1% /tmp

Nice. I want one of these ;)

> > You may want to consider Linux or NetBSD too, at least if you plan
> > to use any PCMCIA hardware that's not ATA ( like wireless networking
> > ). I finally got around to add full PCMCIA support, audio ( output
> > only so far but at least something ), CPU power saving and so on for
> > NetBSD, an accelerated driver for XFree86 is almost there too.
>
> I'm planning on changing this over to NetBSD once your patches are in
> the main distribution.  I've been meaning to ask, will they make into
> 2.1? or 3.0?

They're all in -current, with varying degrees of maturity.
PCMCIA and audio will probably make it into 3.1 ( a bit too fresh for
3.0 yet, PCMCIA just works but DBRI audio has problems on other Suns
which I can't debug for lack of hardware. Works fine on my 3GX though ),
the display driver will be in 3.0 ( but disabled since NetBSD/sparc
still didn't switch to wscons so you'd have to roll your own kernel ),
the XFree driver is in -current, I've been ironing out some weird
problems, I think it's reasonable stable now ( well, the version on my
disk is, the one in cvs has problems ) it's still missing some
acceleration features like colour expansion and line drawing but these
are reasonably easy to add. Support for 24bit video is another can of
worms, all the docs I could find are very vague and I had to guess a lot
- no success in switching to another colour depth yet.

have fun
Michael

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