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Anders Gavare | 3 Jul 2004 16:21
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Re: NetBSD 2.0_BETA on pmax using 2048 byte sectors instead of 512 for CD-ROM access?

Hello,

I'd like to know if someone on this list has tried to install NetBSD
2.0_BETA on a DECstation using CDROM media.

I assume Simon doesn't mind me posting this to the list:

On Thu, 1 Jul 2004, Simon Burge wrote:
...
> Anders Gavare wrote:
...
> > The problem is the following:  when NetBSD 1.6.2 reads from the
> > emulator's emulated SCSI CD-ROM drive, it first checks the size of a
> > logical block (which is 512 bytes), and then reads a number of blocks,
> > transfering the number of blocks times 512 bytes of data. Everything is
> > nice and works well.  With NetBSD 2.0_BETA (as of 20040606, and a
> > 20040629 kernel (but that had other issues as well)), it tries to read x
> > blocks but the (dma) transfer is 2048 bytes times the number of blocks.
> > It is just as if NetBSD suddenly assumes that we're using 2048 byte
> > blocks, disregarding the value (512) returned by the emulated CD-ROM.
> >
> > I _think_ that real DECstations actually do use 512 byte sectors.
> >
> > Is this a problem you know about? Has anyone tried the latest builds on
> > a real DECstation? (With a CD-ROM.)
>
> I don't have any CD-ROMs on any of my DECstations here.  I'm guessing
> that your first access of the device is failing?  I'll ask around to see
> if I can find someone with a DECstation with a CD-ROM on 2.0 or later.
> Or you could try asking on port-pmax <at> netbsd.org which may get you a
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Benson Chow | 4 Jul 2004 03:49
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Boot issues for CDROM/pmax 1.6.2

I seem to be even having issues booting the ISO 1.6.2 cd on a 
pmax.  This is a 7.0 ROM DECstation 3100 with a Quantum Lightning 730S and 
a Yamaha CRW8424S CDRW in 512byte sector mode.  Could the following 
failure be caused by an incompatible cdrom drive?

Since I had a working 1.2D install, I used that to install the new disk 
with 1.6.2, which runs fine and dump the old creaking RZ55s.  Without the 
1.2D install, I don't think I could have installed 1.6.2 without resorting 
to netboot or some other helper machine.

The following is the excerpt of booting 1.6.2 pmax cd.  I typed it in by 
hand so there may be some typos.
-----
>> boot -f rz(0,2,0)

NetBSD/pmax 1.6.2 ISO 9660 Primary Bootstrap
Can't load 'rz(0,2,0)/boot.pmax'
7449 scsi stp
open failed
open rz(0,2,0)/boot: 6
Can't load 'rz(0,2,0)/boot'
7449 scsi stp
open failed
open rz(0,2,0)/boot.pma: 6
Can't load 'rz(0,2,0)/boot.pma'

Excptn:    <vtr=NRML>
Excptn pc: 0x80700070
Creg:      0x30000010<CE=3,EXC=RADE>
Sreg:      0x30000000<CU1,CU0,IPL=8>
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Benson Chow | 5 Jul 2004 01:14
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Re: Boot issues for CDROM/pmax 1.6.2

I got it to boot using my Pioneer 24x cdrom drive, works fine!

Ugh.  Knock off the Yamaha as a potential bootable cdrom drive.

Looks very good, the installer looks much easier than the 1.1/1.2 
installer.

Thanks,

-bc
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