Appendix A Programming the Watchdog Timer
61
After data entry, your program must refresh the watchdog timer by
rewriting I/O port 443 (hex) while simultaneously setting it. When you
want to disable the watchdog timer, your program should read I/O port
443 (hex).
The following example shows how you might program the watchdog
timer in BASIC:
10
REM Watchdog timer example program
20
OUT &H443, data REM Start and restart the watchdog
30
GOSUB 1000 REM Your application task #1,
40
OUT &H443, data REM Reset the timer
50
GOSUB 2000 REM Your application task #2,
60
OUT &H443, data REM Reset the timer
70
X=INP (&H443) REM Disable the watchdog timer
80
END
1000
REM Subroutine #1, your application task
•
•
•
•
•
•
1070
RETURN
2000
REM Subroutine #2, your application task
•
•
•
•
•
•
2090
RETURN
Summary of Contents for PCA-6275
Page 1: ...PCA 6275 Pentium II processor based PCI ISA bus CPU card ...
Page 10: ...x ...
Page 29: ...Chapter 1 Hardware Configuration 19 Figure 1 4 Mounting CPU and cooling modules Step 2 Step 2 ...
Page 30: ...20 PCA 6275 User s Manual Figure 1 5 Mounting CPU and cooling modules Step 3 Step 3 ...
Page 32: ...22 PCA 6275 User s Manual ...
Page 60: ...50 PCA 6275 User s Manual Figure 4 3 Restarting Windows ...
Page 68: ...58 PCA 6275 User s Manual ...
Page 72: ...62 PCA 6275 User s Manual ...
Page 84: ...74 PCA 6275 User s Manual ...
