Barcode Reader User Manual

Troubleshooting in the Protected-Mode Environment

A-3

Troubleshooting DOS Systems

The PMINFO32.EXE program

Purpose: Run PMINFO.EXE to determine the performance of protected/

real-mode switching and extended memory.

Notes: The time-based measurements made by PMINFO may vary

slightly from run to run.

If this error message appears:

DOS/16M error: [17] system software does not follow VCPI

or DPMI specifications

check for a statement in your

CONFIG.SYS containing

NOEMS. If such a statement exists, remove it and reboot your

computer.

If the computer is not equipped with extended memory or if

none is available for DOS/4GW, the extended-memory

measurements do not display.

Other DOS/4GW error messages are in Section A.3,

DOS/4G

Error Messages

Example: The following example shows the output of the PMINFO pro-

gram on an 80486 AT-compatible machine running at

33 MHz.

–================================= PMINFO =======================================–

Protected Mode and Extended Memory Performance Measurement –– 4.45

DOS memory Extended memory CPU performance equivalent to 33.0 MHz 80486

–––––––––– –––––––––––––––

640 17854 K bytes configured (according to BIOS).

640 31744 K bytes physically present (SETUP).

550 17585 K bytes available for DOS/16M programs.

21.6 (0.0) 19.1 (0.5) MB/sec word transfer rate (wait states).

35.4 (0.5) 34.4 (0.5) MB/sec 32–bit transfer rate (wait states).

Overall cpu and memory performance (non–floating point) for typical

DOS programs is 7.78 0.62 times an 8MHz IBM PC/AT.

Protected/Real switch rate = 18078/sec (55 sec/switch, 33 up + 21 down),

DOS/16M switch mode 11 (VCPI).