PCMCIA Software Support for
This is the fax I received from Fujitsu's Technical Support Department
regarding connecting a PCMCIA modem card to the PC Plus.
I am retyping this fax verbatim in HTML. I absorb all fault to
any misspellings or grammatical errors. Any comments between the
square brackets, , are mine.
Fujitsu Poqet PC Plus Computer
Again, many thanks to Javed Ahmed of Fujitsu Technical Support for
his assistance. Javed is really a very helpful guy! He also wrote
on the fax cover page,
You should also know that the PCMCIA compliance is 2.0 JEIDA 4.1
for the slot[s].
It should be noted here that
some variations of the Megahertz XJ1144 modem
will also work with the PC Plus.
PCMCIA Software Support
The purpose of socket services is to provide a layer of software support to
the actual PCMCIA hardware that controls PCMCIA-compatible sockets
for PCMCIA cards. For more information on socket services, please refer
to the Socket Services Interface Specification, Release 1.01.
The PoqetPC Plus' PCMCIA socket services are provided in the following
three driver files, which are preloaded on drive D: of the Poqet Plus
These drivers are not required for access to Revision 1.0 SRAM cards.
Only PQSS.EXE an PQCCU.EXE are required for access to Revision 2.0
SRAM cards or to the AT&T Paradyne Keep-In-Touch card.
[My emphasis] Those two files plus PQCARD.COM are required
for access to a SunDisk.
Loading the Driver Files from CONFIG.SYS
The default CONFIG.SYS file loads all three PCMCIA socket services
drivers and looks like this:
REM DEVICE=D:\RAMDISK.SYS 32
The default CONFIG.SYS file shown above resides on drive C. It is
regenerated from the ROM drive D every time the system is reset or power is
applied after a complete loss of power (including loss of bridge battery
power). Any changes you have made to the CONFIG.SYS file on drive C
will be lost when this happens. Therefore, if you want to change the
default CONFIG.SYS file, you should first copy it to a SRAM card in drive
A or drive B. Then make sure that the card is present whenever you
boot the system. By default, if the system finds CONFIG.SYS in either
drive A or drive B, it will use that CONFIG.SYS rather than the default
CONFIG.SYS on drive C.
Loading the Driver Files from AUTOEXEC.BAT
By default, PQSS.EXE, PQCCU.EXE, and PQCARD.COM are loaded from
the CONFIG.SYS file. You can, however, load them from the
AUTOEXEC.BAT file, though this is not recommended. If you do load
these files from AUTOEXEC.BAT, all three must be loaded before the
PQAUTO command, which appears on line 3 of the default
AUTOEXEC.BAT file. If you add the three PCMCIA driver files to the
AUTOEXEC.BAT file, the file should look like this (the socket services
driver files are shown in bold face):
IF NOT ERRORLEVEL 2 \AUTOEXEC
IF ERRORLEVEL 3 \AUTOEXEC
ECHO Ref R3.02
IF NOT ERRORLEVEL 4 GOTO NOTIME
[Does anyone have a copy of KEYMOUSE? My PC Plus didn't come with it.]
The default AUTOEXEC.BAT file on drive C does not load the socket
services driver files. That AUTOEXEC.BAT file is regenerated from ROM
drive D every time the system is reset or power is applied after a
complete loss of power (including loss of bridge battery power). Thus,
any changes you make to the default AUTOEXEC.BAT file will be lost
when either of those events occurs. To make lasting changes to the
AUTOEXEC.BAT file, you must first copy it to a SRAM card in drive A or
drive B, and then make your changes. As long as the card containing
the modified AUTOEXEC.BAT is present at boot time, and as long as you
haven't changed the AUTOEXEC.BAT search path in System Setup, the
system will execute the AUTOEXEC.BAT file it finds on A or B, and will
never reach the default AUTOEXEC.BAT on C.
Loading the Driver Files for Use with an
AT&T Paradyne KeepInTouch Card
The Keep-In-Touch card, like Revision 2.0 SRAM cards, requires the
PQSS and PQCCU drivers. If the driver files are loaded in CONFIG.SYS,
their respective lines should look like this:
where <PORT> is the COM port the modem should occupy, and <IRQ> is
the Interrupt Request Vector that the modem should use. You can, if
you want, specify <PORT> without specifying <IRQ>. The default value
of <PORT> is COM1. The default value of <IRQ> is IRQ4 for COM1 and
IRQ3 for COM2.
If the drivers are executed from the command line or from
AUTOEXEC.BAT, the commands should look like this:
where <PORT> and <IRQ> are as explained above.