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1992-03-20
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DOS4GW
DOS4GW is the version of Rational Systems, Inc. DOS4G product that
is distributed with the WATCOM C/386 product.
The following is condensed from the WATCOM documentation.
Running an XMS manager like HIMEM.SYS avoids most problems and is
highly recommended.
DOS4GW parameters are in environment variables DOS4G, DOS16M, and
DOS4GVM.
SET DOS4G=quiet - suppresses the DOS4GW startup banner
SET DOS16M= [mode] [[@start [- end]] [:size] [^options]
[mode] is required on a few machines.
mode machine
1 NEC 98-series
5 Fujitsu FMR-60,70
14 Hitachi B32
15 OKI if800
[@start [- end]] is required if mode is required or if running
programs that use extended memory in non-standard ways. The
address range is the extended memory that DOS4GW will use.
[:size] limits the extended memory that DOS4GW uses leaving
some for other users. DOS4GW run directly under DOS (not under
WINDOWS, ...) takes all extended memory unless limited.
[^options] selects the following:
0x01 check A20 line.
0x02 prevent VCPI initialization. Normally DOS4GW
searches for a VCPI server and forces it on.
SET DOS16M=1 @2m-5m use 3 megabytes starting at 2
megabytes on a NEC 98.
SET DOS16M= :2048 use 2 megabytes of extended memory.
SET DOS16M=:4m ^0x02 use 4 megabytes and don't start VCPI.
SET DOS4GVM= [option [#value]] [option [#value]] ...
MINMEM min memory managed by VMM. 512K default.
MAXMEM max memory managed by VMM. 4M default.
SWAPNAME \dos4gvm.swp is the default.
DELETESWAP default leaves swap file for faster startup.
VIRTUALSIZE size of virtual memory. 16M default.
SET DOS4GVM=MAXMEM#4096 DELETESWAP SWAPNAME#C:\APLI386
PMINFO.EXE
Measures the performance of protected/read-mode switching and
extended memory.