Installing and Configuring the

Trace Board

Overview

The EMUL16/300–PC needs RAM to record a history of the data used and instructions executed.

The trace board contains this RAM. Trace is an optional part of an emulator system that allows you to perform more advanced debugging. The standard trace board is a full-length card that can occupy any ISA slot as long as the ribbon cable can reach from the emulator board to the trace board. The 104-bit trace records include address, data, timestamp, processor status and user defined external data. This trace board can trigger on or filter fetch, read or write addresses, (not data values.) The standard trace boards for the 68HC16/916 and 683XX families have a 32K deep trace buffer at 16.78 MHz. Only this frequency is available.

Installing the Trace Board

The trace board address jumpers have been factory preset to 208H. If the trace board and emulator boards are purchased for installation in a PC, it might be easier to attach the cables before installation. If purchased later you might consider removing the emulator board, attaching the short ribbon cables and then reinstalling both boards. A bit of caution should be used when installing these boards as they may result in scraped and bleeding knuckles caused by projecting pins.

Note to PC-ISA Users

If you found it necessary to change the emulator board address from 200H to any other address (210H and 240H recommended) then it will also be necessary to change the trace board address (218H and 248H recommended). The trace board is preset to 208H and will require that you change the hex address accordingly (plus

8H to your emulator address). Always change the trace board according to this pattern, i.e. 200H/208H, 210H/218H, 240H/248H.

After you have inspected the boards for any damage, with the address jumpers in the correct place you can install the trace board in your PC or HSP following these steps:

1.

Turn the power off. Power must always be off when you plug in any board.

2.

Connect the short ribbon cables.

3.

If you are installing the trace board in a PC, insert the trace board into an ISA slot next to the emulator board (also in an ISA slot.) You will need to ensure that the ribbon cables will reach from one board to the other.

© ICE Technology

31