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- Newsgroups: comp.sys.cbm
- Path: sparky!uunet!peora!tarpit!bilver!jwt!artmoore
- From: bbs-artmoore@jwt.UUCP (arthur moore)
- Subject: drive questions
- Reply-To: bbs-artmoore@jwt.UUCP
- Organization: The Matrix
- Date: Fri, 11 Sep 1992 18:50:09 GMT
- Message-ID: <a70XqB1w164w@jwt.UUCP>
- Sender: bbs@jwt.UUCP
- Lines: 32
-
- I'm trying to write a program to support hardware I dont have, so the
- answers to the following tech questions would be appreicated.. Mail,
- please, as I expect a lot of response-
-
- 1. Can the 1571 be used in double-sided mode (1328 blocks free) with the
- 64? Not burst mode, but double-sided.
-
- 2. The 1541 BAM occupies the first block of directory info.. How is the
- BAM stored on the 1581 ROOT directory? Does it precede the filename
- info as it does the 1541? How many blocks does it occupy? Does the
- filename info start on a new block, like track 18, sector 1 with the
- 1541?
-
- 3. Now, the same as #2, but for 1581 sub-directories.
-
- The idea behind questions 2 and 3 is that if you OPEN 2,8,2,"$,S,R", you
- must read 252 bytes to get to the filetype byte, track and sector and
- filename of the first file in the directory. What I really want to know
- if with the 1581, there are perhaps 3 blocks for the ROOT directory,
- therefore, one would have to read 3*252 bytes to get to the 1581 ROOT
- directory equivalent of the 1541's track 18, sector 1... and then
- likewise for a sub-directory. My guess is that there is but one BAM
- block, like the 1541, but I can only speculate.
-
- Thanks all for your help.
- Art
-
-
- _________________________________________
- ( Art Moore bbs-artmoore@jwt.UUCP )
- ) Fidonet CBM Echo - Arthur Moore (
- ( Recorded Live from Orlando, Florida )
-