CP321 datasheet(135/144 Pages) ETC2

135 / 144 page

CP321

Post Module

ID 24977, Rev. 02

Page D - 3

Post Module

D.1

Board description

The CP320-Post is an optionally available tool which is used for hardware and software debug-

ging. During the startup process of the CP321 it provides the user with information about the

status of the boot process by means of a message code similar to the POST codes on the Intel

PC. When the board has completed the startup process, the CP320-Post may be used to pro-

vide debug information for software development. The programmer can, therefore, define his

own debug code and send it to the CP320-Post by making a byte write command to the first

address of the socket memory area. The address for accessing the Post module depends on

the DIL socket (1 or 2) in which it is inserted and the setting of jumper J1 on the CP321.

Table D-1: Access Addresses for CP320-Post

MEMORY

EXPANSION

POSITION

J1 SETTING

ADDRESS

Socket 1

Open

0xFFF8 0000

Set

0xFFF0 0000

Socket 2

not applicable

0xFFE8 0000

Note...

The CP320-Post will only work properly on sockets which are con-

figured for Flash or DiskOnChip modules.

Warning!

TURN POWER OFF

Always ensure that power is switched off before installing the

CP320-Post module.

SHORT CIRCUIT DANGER

When installing and operating the CP320-Post module ensure that

the module does not make contact with the front panel or any

other portions of the CP321 except the connections to the DIL

socket.

CP321 Datasheet(PDF) 135 Page - List of Unclassifed Manufacturers