Z-World Jackrabbit, Getting Started Manual

16

Jackrabbit (BL1800)

2.4  Run a Sample Program

If you already have Dynamic C installed, you are now ready to test your programming 
connections by running a sample program.

If you are using a USB port to connect your computer to the Jackrabbit, choose 

Options > 

Project Options

 and select “Use USB to Serial Converter” under the 

Communications

tab.

Find the file 

PONG.C

, which is in the Dynamic C 

SAMPLES

 folder. To run the program, 

open it with the 

File

 menu (if it is not still open), compile it using the 

Compile

 menu, and 

then run it by selecting 

Run

 in the 

Run

 menu. The 

STDIO

 window will open and will dis-

play a small square bouncing around in a box.

This program shows that the CPU is working.

2.4.1  Troubleshooting

If Dynamic C appears to compile the BIOS successfully, but you then receive a communi-
cation error message when you compile and load the sample program, it is possible that 
your PC cannot handle the higher program-loading baud rate. Try changing the maximum 
download rate to a slower baud rate as follows.

•

Locate the 

Serial Options

 dialog in the Dynamic C 

Options > Project Options > 

Communications

 menu. Select a slower Max download baud rate.

If a program compiles and loads, but then loses target communication before you can 
begin debugging, it is possible that your PC cannot handle the default debugging baud 
rate. Try lowering the debugging baud rate as follows.

•

Locate the 

Serial Options

 dialog in the Dynamic C 

Options > Project Options > 

Communications

 menu. Choose a lower debug baud rate.

If there are any other problems:

•

Check to make sure you are using the 

PROG

 connector, not the 

DIAG

 connector, on the 

programming cable.

•

Check both ends of the programming cable to ensure that they are firmly plugged into 
the PC and the programming port on the Jackrabbit.

•

Ensure that the Jackrabbit is firmly and correctly installed in its connectors on the 
Prototyping Board.

•

Select a different COM port within Dynamic C. From the 

Options

 menu, select 

Project Options

, then select 

Communications

. Select another COM port from the 

list, then click OK. Press 

<Ctrl-Y>

 to force Dynamic C to recompile the BIOS. If 

Dynamic C still reports it is unable to locate the target system, repeat the above steps until 
you locate the active COM port.