User guide

5: Debugging

DC 900-1338I 85

Modules built with SDS development tools can be downloaded to the ICP along with

the SDS RAM-based debug monitor. This monitor runs on the ICP and communicates

with SingleStep through the 68901 MFP’s USART for the ICP6000 or the 6834x serial

port A for the ICP2424 and ICP2432. You must connect the USART by a cable from the

ICP’s console port to a serial port on the SingleStep client machine. SingleStep instructs

the monitor to set breakpoints, dump memory, view registers, and so on.

You must perform the following basic operations to use SingleStep:

1. In the

spsload file, uncomment (remove the pound sign) the LOAD command for

the debug monitor, uncomment the

INIT ...12000 command, and comment out

the

INIT ...18000 command.

2. Install cables that connect the serial port on the SingleStep client machine with

the console port on the ICP.

3. Reboot the Freeway server or rerun

icpload on the embedded product to down-

load the SPS software and debug monitor to the ICP.

After the cables have been properly installed, you can test the configuration from

SingleStep. If the software was successfully downloaded, you can invoke SingleStep by

typing

fm68k at the client machine’s prompt.

From the SingleStep prompt you can enter a transparent mode that echoes what the

monitor is transmitting. At the SingleStep prompt on a UNIX system, type the follow-

ing command. (This option is not available in the DOS or Windows NT environment.)

SingleStep> debug -p /dev/ttya=9600 -T -

This tells SingleStep to use port /dev/ttya and to set the baud rate to 9600. The “-T”

parameter puts SingleStep into debug mode. At this point, the pattern “{#@<cr><lf>”

should appear. If this pattern does not appear, make sure the cables are connected cor-

rectly, then type the command again. To verify the data path to the ICP, enter {#}. The