#Quantum 40 vs A2090A
18 messages in this thread
I have an Amiga 2500/20 with the A2090A HD controller and a Rodime ST-506
HD. I just bought a Quantum 40 meg drive to add to my system, but when I
plug it in (using the internal 50 pin connector), my computer wont boot. I
get the gray screen, it accesses the Rodime shortly, than just hangs there.
I tried unpluging the Rodime and the same thing happens. I soon as I unplug
the Quantum, things work fine again. I trippled check, and the connector
orientation IS corect. Any ideas out there? Sylvain
Sylvain,
What's the Quantum SCSI ID set for? It may be conflicting with the
host adapters's ID (7) so it's hanging.
Don
The ID is set at 0, so I don't think that's the problem. I just tried
unplugging the SCSI cable at the drive's end, and it still hangs, could
that be a short in my cable?
Sylvain
OK, I solved part of the problem now. The cable was improperly set into the
connector, so pins 1 and 2 were shorted. I fixed the cable, so now the
computer boots, I mount res2: than when I try 'prep res2:' I get a 'drive
no PREPed msg after a few seconds, what am I doing wrong? Here is my
mountlist:
RES2: Device = hddisk.device
Unit = 3
Flags = 0
Surfaces = 6
BlocksPerTrack = 16
FileSystem = l:FastFileSystem
Reserved = 2
LowCyl = 0 ; HighCyl = 1
Buffers = 64
GlobVec = -1
Mount = 1
BufMemType = 4
DosType=0x444F5301 #
Sylvain
Sylvain,
RES2: is not a FFS filesystem…
get rid of the GlobVec, Mount and DosType parameters and dump the
buffers to 1 or 2. It's only an "information" partition, used by the 2090
to figure out what's going on in the first DOS partition (which must be OLD
filesystem).
Oh…get rid of the FileSystem parameter also.
What I do, is create a 1 clinder DH2: partition via PREP with only
5 buffers, and then create a mountlist for the rest of the drive under FFS.
Don
OK, did all this, still doesn't want to PREP. Now the device doesn't even
show when I do an INFO after mounting it. HELP!!!!
Sylvain
Sylvain,
RESx: drives won't show up in INFO…they are not DOS filesystems.
Remove the jumper on EP (Enable Parity)…that will probably set
things right.
Don
I removed the EP jumper, still no go… This is starting to make me
nervous. What should the surfaces and cylinders numbers be for the res2:
entry? I', using 6 and 17, but I'm not sure if that's right. I'll recheck
my cable to make sure all the lines are passed OK.
Sylvain
Sylvain,
My list of hard disk parameters doesn't show that particular drive,
but I believe 6 heads and 17 sectors per track would be right. (640
cylinders).
What does your new revised mountlist show?
Don
Here's my new mountlist:
RES2: Device = hddisk.device
Unit = 3
Flags = 0
Surfaces = 6
BlocksPerTrack = 17
Reserved = 2
LowCyl = 0 ; HighCyl = 1
Buffers = 1
BufMemType = 4 #
Sylvain
Sylvain,
Well…a couple of things. It may have been the CIS formatter, but
the '#' came out at the end of the line with BufMemType = 4. It should be
on a line all by itself.
Also, you're asking for BufMemType of 4, that's FAST RAM only, you
might want to make that 0.
Also, you want it to identify itself as SCSI ID 0, which would be
all of your ID select jumpers either in…or all of them out. Since I'm
not familiar with how the Syquest uses the jumpers to set the ID, I'd start
with all of them out, if that doesn't work. Shutdown everything, and put
all the jumpers IN (A0,A1 and A2) and try it again.
Don
Sylvain,
By the Way…the RESx: drives will show up if you type ASSIGN by
itself.
Don
Sylvain,
Check the SCSI id on the Quantum. Mine arrived with the id set the same
as the controller.
Peter_S (LeCroy Corp)
"Software means never having to say you're finished"
OK, I'm not sure how to do this, and I didn't get any docs with the drive.
There is 2 sets of jumpers that I can see one goes like this:
SS EP WS , there's a jumper on EP
the other one is:
A2 A1 A0 there is jumper on A2 and one on A1, is this right for the first
SCSI device?
Sylvain
Sylvain,
This is from memory (I'm at work) but as I remember jumpers on A2 and A1
sets the SCSI address at 6 and I believe the software expects the first
SCSI device at 0 (no jumpers at all). I don't remember where the EP (enable
parity) jumper was, but I don't think I had to change it.
Peter_S (LeCroy Corp)
"Software means never having to say you're finished"
Thanks, I'll try that jumper setting.
Sylvain
Sylvain,
I'm finally doing this from home (where all my documentation lives). You
want all the shorting jumpers (A2,A1,A0) off to select SCSI device 0. The
Quantum uses two zones on the disk, the outer zone of 590 cylinders is 35
sectors/track and the inner zone of 244 cylinders is 28 sectors/track.
Total number of sectors on the drive is listed as 82,029. The mountlist
entries I am using add up to more sectors than are actually on the device,
but this is what worked with my version of prep. Prep had an entry for the
Quantum 40S and lists it as 35 sectors/track, 833 cylinders. Anything other
than thse settings for RES0: and it would not prep. Since I do not boot off
this drive I have the entire disk set up as FFS.
My mountlist entrys are:
RES2: Device = hddisk.device
Unit = 3
Flags = 0
Surfaces = 3
BlocksPerTrack = 35
Reserved = 0
Interleave = 0
LowCyl = 0 ; HighCyl = 1
Buffers = 1
BufMemType = 0
DH2:
Device = hddisk.device
FileSystem = L:FastFileSystem
Unit = 3
Flags = 0
Surfaces = 3
BlocksPerTrack = 35
Reserved = 2
Interleave = 0
LowCyl = 2
HighCyl = 833
Buffers = 30
GlobVec = -1
Mount = 1
BufMemType = 1
DosType = 0x444F5301
StackSize = 4000
Good luck.
Peter_S (LeCroy Corp)
"Software is never having to say you're finished"
Hi Peter, thanks for your help, my HD now preps and dh2: formats, however,
it doesn't want to format the second partition.
Sylvain