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- Topic 14 Thu Aug 21, 1986
- DEB [*deb!*] at 17:32 EDT
- Sub: CBM 9090 IEEE 7.5 Meg Hard Drives!!!
-
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- Category 11, Topic 14
- Message 1 Thu Aug 21, 1986
- MIKEM [Pax Regal] at 19:24 PDT
-
- For those interested, here is a short description of the 9090 HD:
- The D9090 is a 5 1/4 single-drive, non-removable, 'Winchester'
- technology, storage device. It features three platters, with
- recording surfaces on both sides, and provide 7.5 million (meg)
- characters of storage. A single random access file may occupy
- the entire capacity of the unit. There is an IEEE interface
- connector in the back, and a slow-blow fuse near the lower edge of
- the rear panel. The drive has DOS 3.0 and the features include
- a dynamically expandable directory allowing for unlimited number
- of file entries, replacement-mapping of bad sectors, and a
- self-locating BAM. Short list of specs:
- Internal Transfer rate - 5 Mb
- IEEE-488 Bus Transfer Rate - 1.2 Kb
- Track to Track Access Time - 3 milli-secs
- Average Track Access time - 153 milli-secs
- Speed - 3600 RPM
- Height - 5.75 in.
- Width - 8.25 in.
- Depth - 15.25 in.
- Weight - 21 lbs.
-
- Hope this helps.
- -Mike-
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- Category 11, Topic 14
- Message 5 Fri Aug 22, 1986
- M.GROVE at 18:43 EDT
-
- Just how compatable is this drive with the 128. Does it recognize all
- the commands that the 128's DOS uses? I have been working with a drive
- from JCT ( 5 meg ) for about 3 weeks now, and am pretty pleased with it.
- I have been working with the enginneer of the product, and we are getting
- the drive to almost 100% compatability. At date, I would say that the
- drive is about 95% compatable. I work at Tussey Computer Products, and
- we will be selling this product in the future. I have just ordered in
- a shipment of them which are much more compatable than the one I am
- currently using. It uses a Whinchester drive, *comes with a 5 year
- warranty*, their are models available from 3.7 meg to 10 meg, uses the
- serial port ( with another port for daisy-chaining prepherials ), and
- doesn't take up alot of desk space also. It can be mounted in a vertical
- position if needed. I do not know what price we will be selling them at
- yet, but I will post it here once we receive the product. Yes, their are
- some drives available for the 128/64, but incompatability is a BIG problem.
- Soon, I hope to have the option to boot directly off this drive. Any
- more questions, leave them here. I'll be happy to get back to you.
-
- Marty Grove
- TCP Sales
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- Category 11, Topic 14
- Message 6 Fri Aug 22, 1986
- DEB [*deb!*] at 19:00 EDT
-
- This drive is a COMMODORE drive, using DOS 3.0....its completely compatible
- with Commodore DOS, because it IS a Commodore DOS. You will need to obtain
- an IEEE interface to use it, tho, because its an IEEE drive, like the
- SFD 1001, 4040,2031,8050 and 8250 drives.
-
- While I worked at Commodore, I was lucky enough to have one on my desk,
- and I used it all the time. The one big problem with it, usage wise, is
- that it uses standard old Commodore DOS, there are no subdirectories.
- ALSO...programming the sucker is a pain, cuz the BAM Dynamically relocates
- itself as required!!
-
- The drive has no limit on the number of files in the directory, tho.
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- Category 11, Topic 14
- Message 21 Wed Sep 03, 1986
- GRAFIX.M [Mike Hooper] at 13:23 EDT
-
- As long as the SFD's and 1541's take to format, I'm sure it takes forever to
- format one of those gems!
- --GFX
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- Category 11, Topic 14
- Message 22 Wed Sep 03, 1986
- DEB [*deb!*] at 17:57 EDT
-
- It takes a little under *2* HOURS to format one, Mike....
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