Technical data

SCC - Serial Communication Controller (Z85230) Tests

http://www.motorola.com/computer/literature 3-127

MDMC - Modem Control

Command Input

PPCx-Diag>SCC MDMC

Description

This test verifies that the Z85230 can negate/assert selected modem control

lines and that the appropriate input control functions properly.

This test does require an external loopback connector to be installed. For

this test the following connections need to be made in the loopback

connector:

DTR connected to DCD

RTS connected to CTS and DSR

Note that DTR is asserted through the Z8536, not the Z85230, in this test.

Response/Messages

After the command has been issued, the following line is printed:

SCC MDMC: Modem Control................. Running --->

If all parts of the test are completed correctly, then the test passes:

SCC MDMC: Modem Control...........Running ---> PASSED

If any part of the test fails, then the display appears as follows:

SCC MDMC: Modem Control...........Running ---> FAILED

SCC/MDMC Test Failure Data:

(error message)

Refer to the section SCC Error Messages for a list of the error messages

and their meaning.