SPEED33C.EXE

This program modifies the system operating characteristics.
SPEED33C has a command line process.

COMMAND LINE
SPEED33C may be invoked via a batch file.
The following commands are accepted:

        1)  HIGH        Sets the system to 33 MHz and enables
            any memory cache installed in the system.

        2)  MEDIUM      Sets the system to 33 MHz with
            memory cache disabled.

        3)  LOW         This command slows the system down to 8 MHz
            and disables memory cache.  This allows for speed
            compatibility with the original AT 8 MHz machine
            and is mainly used for speed sensitive programs.

        4)  ON          Moves the system BIOS into RAM.
            This allows BIOS calls to execute faster.  If a video ROM
            is present, then it is also moved into RAM for faster screen
            updates.

        5)  OFF         This command has the opposite effect of ON.


EXAMPLE:

SPEED33C HIGH ON

Sets the processor speed to 33 MHz, relocates the BIOS to RAM, and enables
the memory cache.


The commands may be abbreviated to the first two characters.
The defaults are HIGH and ON if any parameter is omitted.


DETAILS

If you have memory cache, then switch SW7 should be on.

The BIOS is moved into the last 384 KB of the 16 MB boundary on all
machines (even 1 MB).  This is done in hardware by mapping the last
384 KB of the first MB into the last 384 KB of the 16 MB address space.
The BIOS is then copied into that area and is write-protected.

Some system boards have switch settings that enable you to change the bus speed.
These switches must be in the recommended position for proper bus speed
switching.  Your installation guide contains instructions for the switch
settings.

386-TO-THE-MAX relocates the BIOS automatically.  In this case, use
the OFF parameter when running SPEED33C.

Quarterdeck's QEMM can relocate the BIOS.  Use the OFF parameter
when QEMM is loaded.