Zilog EZ80L92 - Manual (Page 61)

eZ80L92 Development Kit
User Manual
UM012913-0407 Troubleshooting
57
Troubleshooting
Overview
If a hardware failure is suspected, contact a local ZiLOG representative
for assistance. Before contacting ZiLOG Customer Support to submit a
problem report, follow the instructions below.
Cannot Download Code
If you are unable to download code to RAM using ZDS, ensure that you
press and release the Reset button on the eZ80Acclaim!
® Development
Platform before selecting Debug → Reset and then Debug → Go in
ZDS.
No Output on Console Port
The eZ80L92 Development Kit is shipped with a Flash Loader utility that
is loaded in the protected boot sector of Flash memory (U3). On power-up
of the eZ80Acclaim!
®
Development Platform and the eZ80L92 Module,
the eZ80L92 device on the module runs the code from the Flash memory
area. This code enables the Console port with settings of 57.6 kbps, 8, N,
1.
The Console checks the Receive buffer. If a space character is received on
the Console port, the Flash Loader utility is enabled and a boot message is
displayed on your connected device. If no message is displayed, check the
following:
• Jumper J2 must be ON (IrDA is disabled).
• On Connector J6, the jumper must be removed from pin 6 and pin 9
(con_dis and GND).