FW: Question on SCSI-2
Lohmeyer, John
JLOHMEYE at cossymwest.co.symbios.com
Wed Aug 28 10:24:00 PDT 1996
* From the SCSI Reflector (scsi at symbios.com), posted by:
* "Lohmeyer, John" <JLOHMEYE at COSSYMWEST.CO.SYMBIOS.COM>
*
I received the below message forwarded from the X3 Secretariat. Stefan
Hallgren is looking for additional medium type codes for 3.5-inch SCSI
floppies. Does anyone know the appropriate data to add new medium type
codes for high-density 3.5-inch floppies? For reference, I've included
the SCSI-2 medium type table below:
Table 153 - Direct-access medium-type codes
+=======-=================================================================
====+
| Code |
|
| value | Medium type
|
|-------+-----------------------------------------------------------------
----|
| 00h | Default medium type (currently mounted medium type)
|
| 01h | Flexible disk, single-sided; unspecified medium
|
| 02h | Flexible disk, double-sided; unspecified medium
|
| |
|
| | Flexible disks
|
| | Diameter Bit density Track density Number ANSI
reference |
| | mm (in) Bits/radian /mm (/in) of sides standard
|
| | ---------- ----------- ------------- --------
---------------- |
| 05h | 200 (8,0) 6 631 1,9 (48) 1 ANSI
X3.73-1980 |
| 06h | 200 (8,0) 6 631 1,9 (48) 2 (Note 1)
|
| 09h | 200 (8,0) 13 262 1,9 (48) 1 None
|
| 0Ah | 200 (8,0) 13 262 1,9 (48) 2 ANSI
X3.121-1984 |
| 0Dh | 130 (5,25) 3 979 1,9 (48) 1 ANSI
X3.82-1980 |
| 12h | 130 (5,25) 7 958 1,9 (48) 2 ANSI
X3.125-1985 |
| 16h | 130 (5,25) 7 958 3,8 (96) 2 ANSI
X3.126-1986 |
| 1Ah | 130 (5,25) 13 262 3,8 (96) 2 ISO
DIS8630-1985 |
| 1Eh | 90 (3,5) 7 958 5,3 (135) 2 ANSI
X3.137 |
| | (Note 2)
|
| | Direct-access magnetic yapes
|
| | Width Density ANSI reference
|
| | mm (in) Tracks ftpmm (ftpi) standard
|
| | ---------- ------ ------------ --------------
|
| 40h | 6,3 (0,25) 12 394 (10 000) Note 1
|
| 44h | 6,3 (0,25) 24 394 (10 000) Note 1
|
|-------------------------------------------------------------------------
----|
| Code values 80h - FFh are vendor-specific. All remaining code values
|
| are reserved.
|
|-------------------------------------------------------------------------
----|
| NOTES
|
| 1 See annex c for additional standards information.
|
| 2 This standard is under development. Please contact the
secretariat |
| for current information on status and availability.
|
+=========================================================================
====+
_
To: X3SEC
Cc: stefan at mri.com
From: Stefan Hallgren on Tue, Aug 27, 1996 4:29 PM
Subject: Question on SCSI-2
In the SCSI-2 standard, ducument ANSI X3.131-1994, on
page 195, in Table 153 which lists various Medium Types,
there is only one 3.5" floppy disk type listed.
Where can I find out about what Medium Types to use for
other variations of 3.5" floppy disks ?
Thank you,
Stefan Hallgren,
at
Microtec - A Mentor Graphics Company
stefan at mri.com
--
John Lohmeyer E-Mail: john.lohmeyer at symbios.com
Symbios Logic Inc. Voice: 719-533-7560
4420 ArrowsWest Dr. Fax: 719-533-7036
Colo Spgs, CO 80907-3444 SCSI BBS: 719-533-7950 300--14400 baud
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