I recently got a scsi zip 100 and scsi zip 250 working on my a500 with an a590 hard drive scsi port.
I downloaded the fat95.lha package and installed it by copying the file "fat95" from fat95/L into the L: directory.
I was baffled by the mountlist part and was concerned that I had to have the cylinders and geometry correct. That doesn't seem to be necessary as LowCyl and HighCyl are ignored.
from the readme.too file in the fat95/english directory:
a) Automatic partition search:
LowCyl = 0 /* "Auto search ON" */
BlockSize = 512 /* fat95 does not need this here, */
HighCyl = 1 /* but the Mount command likes to see them ;^) */
BlocksPerTrack = 1
Surfaces = 1
DosType = 0x46415400 /* floppies only. Or else... */
DosType = 0x46415401 /* first usable partition. Works almost always. */
DosType = 0x46415402 /* second "primary" Partition. Seldomly. */
DosType = 0x46415405 /* first "logical drive". */
DosType = 0x46415406 /* second "logical drive", etc. */
My mountlist file which I've named ZIP0MOUNTLIST and put in the DEVS: directory.
ZIP0:
FileSystem = l:fat95
Device = scsi.device
Unit = 5
Flags = 0
LowCyl = 0
HighCyl = 0
Surfaces = 1
BlocksPerTrack = 1
BlockSize = 512
Buffers = 100
BufMemType = 1
BootPri = 0
Stacksize = 4096
Priority = 5
GlobVec = -1
DosType = 0x46415401
#
I mount the zip drive with "mount zip0: from devs:zip0mountlist"
I can copy files to and from the zip drive with no problems so far. The same zip0mountlist works for both my zip100 and zip250 drives on scsi id 5. Since the a590 internal hard drive is on scsi id 6, and external scsi zips can only have scsi id 5 or scsi id 6, I can't have both the zip100 and zip250 hooked up at the same time.
I also copied the "dd" command from the fat95.lha c directory and it only seems to work under amigados 2.0. Works great to image my 40mb scsi quantum to a zip disk. "dd scsi.device 6 zip0:a590image 0 82029" does a complete image of my quantum p40s. (If I don't specify the end sector 82029, it will truncate the image since dd reads it 64 sectors at a time. If it can't get 64 sectors it doesn't handle that very well. When it gets less than 64 sectors dd tells you how many sectors it was able to read but doesn't write them out.)
WARNING: If you use dd, be careful as you can erase your hard disk with the wrong parameters... they don't call dd "disk destroyer" for nothing.
from the fat95/english/readme.too file:
DiskDump
========
An old but useful UNIX bicycle, now brand new re-invented for Amiga (not just
for fat95). Copies a sequence of disk blocks into a file:
dd .device
The fat95 driver seems to work under 1.3 and 2.0.
To see how much disk space you have on the zip disk use "info zip0:"
To change the zip disk use "diskchange zip0:"
I am using zip disks that are PC formatted.
