22 Mar
2006
22 Mar
'06
11:38 a.m.
From: Dave Dunfield
Reply To: General Discussion: On-Topic and Off-Topic Posts
Sent: Wednesday, March 22, 2006 7:12 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: ImageDisk / PC FDCs & single-density
TO ALL:
Does anyone else have an Adaptec 1522A controller that you can try with my
latest version of ImageDisk to see if you can read/write single-density
disks?
I don't have this controller to test with, and I
would like to confirm
that the
problem is generic and not related to the one
particular unit in question.
This may or may not help, but I have used a 1542c with imagedisk to create
mixed density floppies. Others have then used these to successfully create
new images.
I have at least 3 controllers that will work at SD with imagedisk. I have
tried ID in single density with about 15 different floppy controllers, and
have one more to test. Is there a FAQ about what controllers will write SD
images? If not, I'd gladly maintain a list.
Kelly
22 Mar
22 Mar
2:53 p.m.
This may or may not help, but I have used a 1542c with
imagedisk to create
mixed density floppies. Others have then used these to successfully create
new images.
Interesting - I have a 1542 which does not work with ImageDisk or TeleDisk/TESTSD
at single-density - the user reporting the problems also has a 1542 which does not
work with any of the three programs ... Mine is a '1542CF' - I assumed the
'F' ment
"with floppy" ... Is this the same as yours?
I have at least 3 controllers that will work at SD
with imagedisk. I have
tried ID in single density with about 15 different floppy controllers, and
have one more to test. Is there a FAQ about what controllers will write SD
images? If not, I'd gladly maintain a list.
I've found 6-7 that work OK - and I've been adding them to the documentaion.
Feedback on what other controllers do and don't work would be appreciated,
however as noted here - some controllers seem to work for some people and
not others (more likely, there are "minor" version variations in the
controller).
So far - every controller I've tried that passes Chuck's "testsd"
program
also works for me with ImageDisk at single-density - the case I have been
discussing is the only one I am aware of where this has not been the case.
Regards,
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
3:20 p.m.
Rumor has it that Dave Dunfield may have mentioned these words:
[[ I cc:ed this to you, as sometimes my emails don't go thru the cctalk
list anymore or are rather delayed (days)... weird... ]]
You assumed wrong, my friend. ;-) The 2 in 1542 means "with floppy" - I
wonder if the F means "Fast" as in Fast SCSI - 10M/sec instead of the
standard 5M/sec bus speed.
Every Adaptec controller I'd seen up to the 29xx series used the last digit
for floppy controller - 2 for floppy, 0 without, I don't know if there were
others... For some reason, I thought there was a '4' ending as well, but I
don't know what that could've stood for.
Laterz,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers
zmerch at 30below.com
Hi! I am a .signature virus. Copy me into your .signature to join in!
This may or
may not help, but I have used a 1542c with imagedisk to create
mixed density floppies. Others have then used these to successfully create
new images.
Interesting - I have a 1542 which does not work with ImageDisk or
TeleDisk/TESTSD
at single-density - the user reporting the problems also has a 1542 which
does not
work with any of the three programs ... Mine is a '1542CF' - I assumed the
'F' ment
"with floppy" ... Is this the same as yours? 
23 Mar
23 Mar
3:30 p.m.
On Wed, 22 Mar 2006, Roger Merchberger wrote:
You assumed wrong, my friend. ;-) The 2 in 1542 means
"with floppy" - I
wonder if the F means "Fast" as in Fast SCSI - 10M/sec instead of the
standard 5M/sec bus speed.
Every Adaptec controller I'd seen up to the 29xx series used the last digit
for floppy controller - 2 for floppy, 0 without, I don't know if there were
others... For some reason, I thought there was a '4' ending as well, but I
don't know what that could've stood for.
Perhaps FOUR flopies? (NUMBER of floppies for last digit)
Do they have an '8'???
4:14 p.m.
Fred Cisin wrote:
On Wed, 22 Mar 2006, Roger Merchberger wrote:
I always thought the ones ending in 4 denoted differential HBAs rather than
single-ended, could be wrong though....
You assumed wrong, my friend. ;-) The 2 in 1542
means "with floppy" - I
wonder if the F means "Fast" as in Fast SCSI - 10M/sec instead of the
standard 5M/sec bus speed.
Every Adaptec controller I'd seen up to the 29xx series used the last digit
for floppy controller - 2 for floppy, 0 without, I don't know if there were
others... For some reason, I thought there was a '4' ending as well, but I
don't know what that could've stood for.
Perhaps FOUR flopies?
6678
days inactive
6679
days old
4 comments
5 participants
participants (5)
-
CCTalk＠catcorner.org -
cisin＠xenosoft.com -
dave06a＠dunfield.com -
julesrichardsonuk＠yahoo.co.uk -
zmerch＠30below.com