Chapter 1 Hardware configuration
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The following table lists the clock for the Pentium 75/90/100/120/
133/150/166MHz CPUs.
CPU
CPU clock
Pentium 75 MHz
50 MHz
Pentium 90 MHz
60 MHz
Pentium 100 MHz
66 MHz
Pentium 120 MHz
60 MHz
Pentium 133 MHz
66 MHz
Pentium 150 MHz
60 MHz
Pentium 166 MHz
66 MHz
Monitor mode select (JP15)
JP15 specifies the display adapter type that is attached to your
PCA-6157.
Color
Mono
JP15
Watchdog timer – system reset/IRQ11 (JP19)
When CPU processing has come to a halt, the watchdog timer can
either reset the system or generate an interrupt on IRQ11. This can
be set via a two-pin jumper (JP19) as shown below:
IRQ11
System Reset
JP19
(default)
For information on programming the watchdog timer, see
Appendix A.
