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OS/2 Shareware BBS: 8 Other
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2000-07-11
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JJSCDROM.DMD (JJ20000711) - modified OS/2 CD-ROM DMD
with CD-DA digital readout / CD-XA / multisessioning enhancement
Description:
This is a modified OS/2 CD-ROM device manager driver based on latest DDK
Online source. It will be worked on OS/2 2.x or later.
My enhancements are:
- Added per-drive-basis "feature forcing" features. They force:
= to turn on "CD-DA/XA readable/multisessioning-aware" flags
= vendor-specific SCSI CD-DA/XA/multisessioning methods
- Added "WORM-to-CD-ROM treatment" feature.
- Fixed slow audio initialization problem of some Plextor SCSI drives.
- Added "ignore drive" feature.
- Enriched /V option output.
Other enhancements are:
- Added "CD-Extra" (data-multisessioned audio-CD) support.
[introduced by Robert Lalla]
CONFIG.SYS syntax:
DEVICE=d:\OS2\BOOT\JJSCDROM.DMD [options]
Option diagram:
----+- /Q ------+-+--- /F[C[+|S|T]|X[+|T|S|N]|M[+|T|S|C|N|H]] -+---->
^ +- /V --->^ | | ^ | ^
| +- /R:n ->| | | +------------------------------------------+ |
| +- /S --->| | +----------------------------------------------+
| +- /W --->| |
| +---------+ |
+-------------+
--+--- /U:n -+--- /F[C[+|S|T]|X[+|T|S|N]|M[+|T|S|C|N|H]] -+---+---->
| ^ | ^ | ^ | ^
| | | +------------------------------------------+ | | |
| | +- /I -----------------------------------------+ | |
| +---------------------------------------------------------+ |
+-------------------------------------------------------------+
Option descriptions:
/Q : displays no messages if not installed
/V : displays CD-ROM unit information
/R:n : skips driveletter allocation over specified count
/S : assigns 1 driveletter only for ATAPI changer units
/W : treats WORM units as CD-ROM
/U:n : specifies drive number (0 based) for /F and /I
/Fxx : forces CD-DA/XA/multisessioning treatments
without /U, applies to all drives
/FC+ : forces to turn on "CD-DA readable" flag
/FCS : forces Sony CDU-561 compatible SCSI CD-DA readout method
/FCT : forces Toshiba XM-3401 compatible SCSI CD-DA readout method
/FC : same as /FC+ /FCS
/FX+ : forces to turn on "CD-XA readable" flag
/FXT : forces Toshiba XM-3401 compatible SCSI CD-XA readout method
/FXS : forces Sony CDU-561 compatible SCSI CD-XA readout method
/FXN : forces NEC 84-1 compatible SCSI CD-XA readout method
/FX : same as /FX+ /FXS
/FM+ : forces to turn on "multisessioning-aware" flag
/FMT : forces Toshiba XM-3401 compatible SCSI multisessioning method
/FMS : forces Sony CDU-561 compatible SCSI multisessioning method
/FMC : forces Chinon CDS-535 compatible SCSI multisessioning method
/FMN : forces NEC 84-1 compatible SCSI multisessioning method
/FMH : forces HP C4324 compatible SCSI multisessioning method
/FM : same as /FM+ /FMS
/F : same as /FC+ /FCS /FX+ /FXS /FM+ /FMS
/I : ignores drive (no driveletter assignment)
Startup output description:
IBM OS/2 JJSCDROM.DMD (960528) (JJ20000711)
ui : di-ai-un-l : vendor product rev : da xa ms
00 : 02-00-03-0 : TEAC CD-ROM CD-532S 3.0A : +S +S +S
01 : 02-00-04-0 : TOSHIBA CD-ROM XM-3501TA 2694 : +- +- +-
02 : 02-00-05-0 : SONY CD-R CDU948S 1.0k : +- +- +-
^^ ^^ ^^ ^^ ^ ^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^ ^^ ^^ ^^
| | | | | | | | || || ||
a b c d e f g h ij kl mn
a : # of CD-ROM unit index, for /U option
b : # of adapter device driver index installed
c : # of adapter index controlled by each adapter device driver
d : physical unit number of CD-ROM units connected to each adapter
e : logical unit number in each physical unit
f, g, h : device inquiry strings
i : + if "CD-DA readable" flag is turned on
j : SCSI CD-DA readout method forced [S/T]
- if not forced
k : + if "CD-XA readable" flag is turned on
l : SCSI CD-XA readout method forced [T/S/N]
- if not forced
m : + if "multisessioning-aware" flag is turned on
n : SCSI multisessioning method forced [T/S/C/N/H]
- if not forced
Some considerations:
- For SCSI drives:
Use /FCx, /FXx and /FMx with /FC+, /FX+ and /FM+.
All SCSI drives that OS2CDROM.DMD (and JJSCDROM.DMD without /Fxx) don't
know will lack CD-DA/XA/multisessioning capabilities because CD-DA/XA/
multisessioning check/procedure of SCSI drives are almost vendor-specific.
However, at glance, it seems Sony method is de-facto standard.
- For ATAPI drives:
Use /FC+, /FX+ and /FM+.
All ATAPI drives should be based on standard specifications but some
drives claim faulty CD-DA/XA/multisessioning capability information.
- For proprietary (!SCSI & !ATAPI) drives:
Completely vendor-dependant. Use /FC+, /FX+ and /FM+ but almost incapable.
Examples:
- Uses a Sony CDU-561 compatible CD-ROM unit, but cannot be recognized
CD-DA/XA readout/multisessioning feature by standard OS2CDROM.DMD
DEVICE=d:\OS2\BOOT\JJSCDROM.DMD /F
- Uses 3 CD-ROM units, one (unit #0) IDE ATAPI drive, one (unit #1) Toshiba
SCSI OEM-version (non-Toshiba SCSI inquiry) drive and (unit #2) Sony
CDU-561 compatible SCSI
DEVICE=d:\OS2\BOOT\JJSCDROM.DMD /U:1 /FC+ /FCT /FX+ /FXT /FM+ /FMT
/U:2 /F
- Uses WORM-style SCSI CD-R as CD-ROM, such as Yamaha CDR102
DEVICE=d:\OS2\BOOT\JJSCDROM.DMD /W
- Ignores 2nd CD-ROM unit for other CD-ROM driver/filesystem such as
RSJ CD-Writer CDWFS or Pegasus-OFS
DEVICE=d:\OS2\BOOT\JJSCDROM.DMD /U:2 /I
Feedback:
Email to Takayuki 'January June' Suwa, mailto:jjsuwa@sys3175.com.
My motto: "Email to me or your mailer will cause SYS3175."
Acknowledgments:
- Atsushi Nishio (anishio@yamato.ibm.co.jp), predecessor modifing CD-DA
readout feature. I referred how to enable CD-DA readout/multisessioning
capabilities and to attach WORM-style SCSI CD-R.
- Ernst Fueloep (fueloep@at.ibm.com), author of another modified
OS2CDROM.DMD. I also referred how to fix Plextor problem.
- Robert Lalla (rlalla@stepnet.de), author/donator of CD-Extra support
modification. I think many OS/2 users admire your decision.