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CONFPORT
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1992-12-16
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In your CONFIG.SYS and AUTOEXEC.BAT there are commands and
device drivers that load when you boot your computer, If you get
unpredictable results, or out of memory messages (etc) then you
can re-configure your computer. To test if a device or TSR
(resident) program is causing this, you can put REM in front of
the line in either of the above files. You use an ASCII (plain
text) editor or your wordprocessor in plain text mode.
an example......
REM DEVICE=C:\DOS\ANSI.SYS
This is only an example, because ANSI.SYS is always OK to have in
there. >>>Another IMPORTANT thing to check is that BUFFERS= and
FILES= are 35 or higher.<<<
MEMORY
Memory is not a straightforward computer feature. Normaal memory,
where computer programs run, where the OS (operating system) and
(many) device drivers reside, is limited to 640K. The extra 2meg
or 4 meg is used BY certain programs, which are running in
conventional (640K) memory. They have special features which can
load large blocks of data into that HI (extended/expanded)
memory. Then as the program works on the data, it switches
'pages' of memory (16K blocks) from HI memory into conventional
memory while it works on that section of data. When that section
isn't needed it swaps that back into HI, and gets another peice
to work on. This lets you have HUGE spreadsheets or databases
running yet only have 640K to run the program(s). The more
programs (& TSRs and device drivers) you load, the less room
there is in conventional memory to operate. Somewhere along the
line the system will lock or crash if you keep adding programs
into 640K.
>> PORTS <<
If you have an internal modem, it must be set for COM4 90%
of the time. Most computers have serial-port 1 and 2 already
built-into the computer. A serial port is just a built-in
comport. So you cannot set a modem to be the same comport (1 or
2). Try com4 then com3, see your manual for jumper settings.
There seem to be some video cards using the COM4 address. In
that case try COM3 with IRQ 5 or 2 (see your manual). Don't
forget the software must also be told when you change IRQs.
Sometimes one internal modem/or model of modem will work in
spite of a conflict, when set for COM1 or COM2 when there is a
serial port. Always try COM3 and COM4 (and IRQ settings) before
deciding the modem is bad.
Don Hinds - Zoom Tech
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