MicroVAX 3100-40 -> asc0: !TC on DATA XFER

Hello,
     Trying to install the OpenBSD 5.1 snapshot (2012.02.14) and when 
the install script tries to mound the cd-rom I get the following errors:
asc0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000
asc0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000
asc0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000

I see this was a problem in the mips port in NetBSD a while ago.





Available disks are: sd0 sd1 sd2 sd3 sd4.
Which one is the root disk? (or 'done') [sd0]
Use DUIDs rather than device names in fstab? [yes]
The auto-allocated layout for sd0 is:
#                size           offset  fstype [fsize bsize  cpg]
   a:           902.8M               16  4.2BSD   2048 16384    1 # /
   b:           256.0M          1848928    swap
   c:          4091.8M                0  unused
   d:          2503.5M          2373216  4.2BSD   2048 16384    1 # /usr
   e:           429.5M          7500448  4.2BSD   2048 16384    1 # /home
Use (A)uto layout, (E)dit auto layout, or create (C)ustom layout? [a]
/dev/rsd0a: 902.8MB in 1848912 sectors of 512 bytes
5 cylinder groups of 202.47MB, 12958 blocks, 25984 inodes each
/dev/rsd0e: 429.5MB in 879616 sectors of 512 bytes
4 cylinder groups of 107.38MB, 6872 blocks, 13824 inodes each
/dev/rsd0d: 2503.5MB in 5127232 sectors of 512 bytes
13 cylinder groups of 202.47MB, 12958 blocks, 25984 inodes each
Available disks are: sd1 sd2 sd3 sd4.
Which one do you wish to initialize? (or 'done') [done]
/dev/sd0a on /mnt type ffs (rw, asynchronous, local)
/dev/sd0e on /mnt/home type ffs (rw, asynchronous, local, nodev, nosuid)
/dev/sd0d on /mnt/usr type ffs (rw, asynchronous, local, nodev)

Let's install the sets!
Location of sets? (cd disk ftp http nfs tape or 'done') [cd]
Available CD-ROMs are: cd0.
Which one contains the install media? (or 'done') [cd0]
asc0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000
asc0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000
asc0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000
mount_ffs: /dev/cd0a on /mnt2: Invalid argument
Location of sets? (cd disk ftp http nfs tape or 'done') [cd] ^C

#

[demime 1.01d removed an attachment of type APPLICATION/DEFANGED which had a name of BiggRanger.31547DEFANGED-vcf]