User guide

DC 900-1338I 81

Chapter

Debugging

The debugging facilities available depend on whether Software Development Systems’

or some other cross development environment is being used. This chapter describes the

debugging facilities provided.

5.1 PEEKER Debugging Tool

PEEKER is a low-level peek and poke routine stored in the ICP2424 or ICP2432 PROM.

To use PEEKER, attach a 9600b/s terminal directly to the ICP’s console port with the

console cable (and programmer’s module for the ICP2432) provided. To enter

PEEKER, type Control-C on the ICP’s console device, depress the black NMI switch on

the ICP2424’s card edge or the ICP2432’s programmer’s module, or execute a branch

or jump subroutine.

On entry, PEEKER displays the current values of the MC6834x’s register set.

PEEKER allows you to examine and modify locations in the ICP’s memory space by

bytes, words, or longwords.

In response to PEEKER’s prompt (

pk>), enter Control-X to return to PEEKER’s caller

or to examine or modify a location.

To examine a location, enter:

• the location’s address in hexadecimal