home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Gold Medal Software 3
/
Gold Medal Software - Volume 3 (Gold Medal) (1994).iso
/
games
/
addons
/
rm110.arj
/
PHILIPS
/
READ.ME
< prev
next >
Wrap
Text File
|
1993-08-04
|
7KB
|
169 lines
Laser Magnetic Storage International
4425 ArrowsWest Drive
Colorado Springs, CO. 80907
LZ260 release 1.00 August 4, 1993
-----------------------------------------------------------------------------
Table of Contents
Section 1 List of Files
Section 2 Features
Section 3 Buffers in host memory (the /M option)
Section 4 Details displayed with /V option (DD260 and MSCDEX)
-----------------------------------------------------------------------------
Section 1 - List of Files
The files included on this disc are:
READ.ME This text file.
DD260.SYS Device driver to support the CM205, CM225, CM206, and
CM226 LMS CDROM drives with the LMS CM260 host adapter.
This device driver adheres to the Microsoft specification
for control of optical drives using personal computers
and the MS-DOS operating system. It is compatible with
Microsoft Windows 3.x. The driver requires an 80186 or
higher host processor.
MSCDEX.EXE The Microsoft CD ROM Extensions to MS-DOS, version 2.21.
SETUP.EXE A program to automatically install DD260.SYS and
MSCDEX.EXE.
USRGUIDE.TXT A text file with details on the installation process.
Files copied by Setup:
DD260.SYS
MSCDEX.EXE
-----------------------------------------------------------------------------
Section 2 - Features
This first release of the device driver software has the following features
- Access to standard CD-AUDIO discs, CDROM discs, and multi-session
Photo CD discs. Contact Eastman-Kodak for more information on the
multi-session Photo CD discs.
- Automatic speed control with the CM206 double-speed drive is
implemented for data/audio switching. Speed is adjusted downward as
a recovery measure on damaged disc surfaces.
- When used with a CM205 or CM225, the CM260 and the DD260 device
driver reduce processor overhead by nearly half as compared with the
CM250 and the DD250MS device driver.
------------------------------------------------------------------------------
Section 3 - Buffers in host memory
The CM205, CM225, CM206, and CM226 CD ROM drives are compatible with the
Multimedia PC specification. One of the requirements stated in this document
is the capability to continuously stream data from the disc to the PC, while
using less than 40% of the processor's bandwidth. This capability allows the
execution of video or animation sequences on your Multimedia PC.
In order to meet the performance targets required for MPC compliance each of
the CM205, CM225, CM206, CM226 need to buffer data in the PC itself. When
installing the device driver software you have an option to select the number
of memory buffers available to the CD ROM device driver. This is the /M
option on the DEVICE line in the CONFIG.SYS file. The software installation
program will put your preference in the proper place and format. Each memory
buffer requires 2,512 bytes of the memory in your PC.
Multimedia PC compliance does specify the use of at least a 386/25MHz
processor.
It is recommended to install at least 8 memory buffers to achieve MPC
compliance. You have the option to install a total of 32 sector buffers.
Note that performance does not always improve as more memory is allocated for
the device driver. For read sizes up to 64k bytes, the best performance is
achieved with 12 memory buffers when using a CM206 or CM226 and 24 memory
buffers with the CM205 or CM225. You may need to try more than one
configuration to determine the best one for your needs, given the trade-off
between performance and memory usage. If you do not plan to run Multimedia
applications, you may consider not installing any memory buffers for the
CDROM device driver.
The minimum number of buffer sectors the driver will use is two. If you
specify 2 or less memory buffers, the driver will allocate 2, occupying 5024
bytes of PC memory.
The maximum number of memory buffers is 32. If you specify more than 32 on
the config.sys line, the driver will reduce it to 32. If memory constraints
disallow allocation of the entire number of memory buffers requested, then
the number will be reduced to available memory.
It is recommended that the DEVICEHIGH feature of MS-DOS 5.0 and higher be
used to load the DD260 driver and its memory buffers into upper memory. See
your MS-DOS manual for instructions on how to use this feature.
For example, if you accept the suggested SETUP options, your CONFIG.SYS file
will contain the line:
DEVICE=C:\CDROM\DD260.SYS /D:MSCD001 /P:340 /I:3 /M:8
-----------------------------------------------------------------------------
Section 4 - Details displayed with /V option
DD260 driver
When loaded with this DEVICE statement :
DEVICE=C:\CDROM\DD260.SYS /V
The DD260 driver displays something like :
DOUBLE-SPEED CDROM DEVICE DRIVER
VERSION 1.00: 12:33:02 Aug 4 1993
CDROM DEVICE DRIVER NAME: MSCD001
Port base address: 0340
Interrupt request 0003
Memory buffers: 0002
MSCDEX
When loaded with this command line :
MSCDEX /L:W /D:MSCD001 /M:16 /V
MSCDEX displays something like :
MSCDEX Version 2.21
Copyright (C) Microsoft Corp. 1986, 1987, 1988, 1989, 1990, 1992. All rights
reserved.
Drive W: = Driver MSCD001 unit 0
485456 bytes free memory
0 bytes expanded memory
12956 bytes CODE
2112 bytes static DATA
33278 bytes dynamic DATA
48608 bytes used
-----------------------------------------------------------------------------
dd260.SYS, SETUP.EXE, READ.ME
(C) Copyright 1991,1992, 1993
Laser Magnetic Storage International
MSCDEX.EXE
(C) Copyright 1986,1987,1988,1989,1990,1992
Microsoft Corporation
Unauthorized Copying is Strictly Prohibited. All Rights Reserved
MS-DOS, Windows and MSCDEX are trademarks of Microsoft Corporation