			    CDR-1100 USER GUIDE 
			      October 6, 1992

Please refer to the appropriate sections below: 

Section 1: If there will be only one CDROM drive on your system
 
Section 2: If there will be more than one CDROM drive
 
Section 3: If you are connected to a network
 
Section 4: If you want to load the CDROM software into upper memory
 
Section 5: If you just want to update the CDROM software files
 
Section 6: If you want to verify the CDR-1100 host adapter settings
 
Section 7: If you want to use host RAM for buffers (/M option)
 
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 Section 1.  If there will be only one CDROM drive on your system
 
   If you want to use the factory settings (i.e. you have not changed the
 jumpers on the CDR-1100 host adapter), you may run Quick Setup, by pressing
 F3. This will install the CDROM software on your startup disc and modify
 your startup files to load the software when your system is restarted.
   If you need to change the settings or the name of the directory where
 Setup will install the software, run Full Setup, by pressing F4.
 
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 Section 2.  If there will be more than one CDROM drive
 
   Run Full Setup, by pressing F4, to install the CDROM software files,
 but skip editing CONFIG.SYS and AUTOEXEC.BAT, the startup files.
   In the CONFIG.SYS file, Setup allows for only one active statement
 loading a device driver for the CDR-1100 host adapter, either DD250.SYS or
 DD250XT.SYS. Setup allows you to change the options settings on that line,
 but not to add another. To access more than one CDR-1100 host adapter, you
 must set the jumpers on each adapter to a unique port and a unique IRQ, and
 then you must edit the CONFIG.SYS file to add a DEVICE= statement for each
 adapter. Use the /P and /I switch options to assign each copy of the driver
 to a specific adapter, and use the /D option to assign each a unique tag
 name. Setup does not detect any device driver other than DD250.
   In the AUTOEXEC.BAT file, Setup allows for only one /D:tag_name switch
 in the statement which loads the Microsoft CDROM Extensions program,
 MSCDEX.EXE. Setup allows you to change the tag name, but not to add
 another. To access more than one CDROM drive through MSCDEX, you must edit the
 AUTOEXEC.BAT file to add a /D switch for each device driver you have
 loaded. Drive letters will be assigned by tag names from left to right.
 
   For example, to access two CDR-1100 adapters and one generic adapter, in
 the CONFIG.SYS file :
 
   DEVICE=C:\CDROM\DD250.SYS /P:340 /I:3 /D:MSCD001
   DEVICE=C:\GENERIC\GENERIC.SYS /D:MSCD002
   DEVICE=C:\CDROM\DD250.SYS /P:330 /I:6 /D:MSCD003
 
   and in the AUTOEXEC.BAT file :
 
   C:\CDROM\MSCDEX /L:G /D:MSCD003 /D:MSCD001 /D:MSCD002
 
   The drive attached to the CDR-1100 host adapter set for port 340 and IRQ 3
 is drive H, the drive on the other CDR-1100 is drive G, and the generic drive
 is drive I.
 
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 Section 3.  If you are connected to a network
 
   You may use Setup to install the CDROM software files and to edit your
 startup files. But before restarting your system, you must edit your
 AUTOEXEC.BAT file to move the statement that loads the Microsoft CDROM
 Extensions program, MSCDEX.EXE, so that it is after any statements that
 load network software and before any that load an operating environment (e.g.
 DOSSHELL or Microsoft Windows). The network software will not install
 properly if MSCDEX is installed first.
   It is recommended that your network administrator inspect the changes
 Setup makes to your startup files.
 
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 Section 4.  If you want to load the CDROM software into upper memory
 
   The device driver for the CDR-1100 host adapter, DD250.SYS, has been
 successfully tested with the DEVICEHIGH= feature of DOS 5.0, which can be
 used to load device drivers into upper memory. Please refer to your DOS
 manuals for instructions on using DEVICEHIGH=. You will have to edit your
 CONFIG.SYS file to make this change. The DD250.SYS driver has not been
 tested with other, similar software.
   The Microsoft CDROM Extensions program, MSCDEX.EXE, cannot be loaded
 into upper memory. The /E switch asks MSCDEX to allocate expanded memory
 for its buffers only.
 
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 Section 5.  If you just want to update the CDROM software files
 
   Run Full Setup, by pressing F4. After the files have been copied, you
 can skip editing the startup files, CONFIG.SYS and AUTOEXEC.BAT, keeping
 your current startup settings.
 
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 Section 6.  If you want to verify the CDR-1100 host adapter settings
 
   The CDR-1100 host adapter and the CDROM drive must be installed before
 running this test.
   Run Verify Setup, by pressing F5. This will try to access the CDROM
 drive using the settings for port and IRQ from the DEVICE= statement that
 was added to the CONFIG.SYS file. If you have not edited the CONFIG.SYS
 file during this run of Setup, Verify Setup will use the factory settings.
   If Verify Setup fails:
      1) check that the settings match the jumpers on the host adapter,
      2) check that no other expansion boards use those settings, and
      3) check that all cables are properly installed.
 
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 Section 7.  If you want to use host RAM for buffers (/M option)
 
   Both MSCDEX and DD250 allow you to allocate space in host RAM, your
 computer system's main memory, for buffers. In both cases, the number of
 buffers is given by an option switch, /M. MSCDEX will keep directory
 information in its buffers. DD250 uses the buffers to read ahead.
 Allocating more buffers will usually improve performance, but at the cost
 of increasing the memory used by these programs.
   It is recommended that you accept the defaults offered. These settings
 will give good performance on most systems for most applications.
 
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