A-4
Troubleshooting
2. Some overruns are caused by
SMARTDRV
write caching. To dis-
able write caching but continue read caching, specify the drive letter
without a
+
or
-
. For example,
SMARTDRV C
enables read caching
but disables write caching. Note, however, that this will slow the PC
down.
3. Remove the
DOS=HIGH
statement from
CONFIG.SYS
as it causes
interrupts to be delayed longer. Note that this will take up precious
CONVENTIONAL
memory space.
4. An ill-behaved TSR may be contributing to the problem. If so, try to
isolate it by removing all TSRs then adding them back one at a time.
5. Run in standard mode. Windows stops virtualizing I/O and there is
less overhead.
6. Remove the
SOUNDS.DRV
driver (which enables a variety of
sounds from your PC speaker) if it is present, as this disables inter-
rupts while activated.
Other things you could try are listed below.
●
Check that you are using the Windows versions of
EMM386
,
HIMEM.SYS
and
SMARTDRV
, and
not
the DOS versions.
●
Don't run multiple disk-caching programs.
●
In
CONFIG.SYS
, set
FILES
to
30
or higher.
●
Check that you have
SHELL=COMMAND.COM / E:2048 /P
i.e.
2K environment.
●
If Windows hangs, increase the stacks to
64,512
. The recommenda-
tion is 0,0.
●
Check that your
TEMP
variable points to a subdirectory that actually
exists and that there are at least 2 megabytes free on the disk.
●
Check that
EMMExclude=A000-EFFF
, otherwise Windows will
interfere with (DOS) high memory when it shouldn't.
●
For bizarre problems, disable shadow RAM. If this rectifies the prob-
lem, upgrade your BIOS.
●
Disable hardware cache in caching disk controller.
●
If you are using V3.1 of Windows communication drivers then try
using a serial port with a 16550 UART.
Note: Microsoft has produced a document called
CE_OVERRUN
Errors with Serial Communications
which can be obtained
by contacting Microsoft and asking for document number
Q79988
.
Содержание -05W
Страница 1: ...TeemTalk 05W 07W 11W User s Guide...
Страница 38: ...2 24 Getting Started Notes...
Страница 58: ...3 20 Keyboard Configuration Notes...
Страница 152: ...8 20 File Transfer Notes...
Страница 162: ...9 10 ICL FTF File Transfer Notes...
Страница 324: ...13 32 Dynamic Data Exchange Text1 i 12 LinkItem 0 i 80 Text1 i 12 LinkMode 1 Next i End If End Sub...
Страница 336: ...C 6 Key Reference Numbers Notes...
Страница 360: ...E 16 Host Command Summary Notes...
Страница 370: ...Index 10 Index X XMODEM 8 1 XMODEM 1K 8 1 Y YMODEM Batch 8 2 Z ZMODEM 8 2 Zoom Button 2 17...