- TMS370 Microcontroller/Gang Programmer User's Guide

Verifying the Contents of a Device
3-24
Operating in the Display Window
Step 3: If you chose to verify a single device against PC memory, you must
now specify the error file. Otherwise, verification errors are indicated
with the red LEDs found below each device socket. If you have en-
tered an error file previously, it will appear as the default.
Error File:
Step 4: If you are verifying against PC memory, you must select the address
range to be used during verification.
PC memory base address: all
The default for the base address prompt, all , causes the valid
address ranges defined for the current device type to be used as the
blocks of PC memory for verification. The valid address ranges also
determine the locations in the device from which the data bytes are
read.
However, if you want to verify the device from a block of PC memory
other than the default, enter an address to specify the start address
of the block. Then enter the size of the block at the next prompt.
Size (in bytes): 0000h
When specifying values other than the default, you must also define
the device base address, where the verification should begin, at the
following prompt.
Device base address:
The default for this prompt is the value entered for the PC memory
base address prompt. If you want to read from a different device lo-
cation, enter the new address here.
After you have entered all the parameters correctly (or simply chosen
all at the
PC memory base address prompt), the Gang programmer conducts a device
test. If the device you have chosen fails (or any sockets are empty) the pro-
grammer beeps and turns on the LED below the failed device. Also, an error
message prompts you about the device failure:
Device test failed, continue? (y/n)
At this time, you should try to re-insert the failed device and start verifying its
contents again.
It is possible that a defective device—a device with bent pins or a device that
has been incorrectly inserted—will affect all of the devices on the gang pro-
grammer. If this is the case, the following error message is displayed:
unable to communicate with TMS370 device – Retry, Abort
You should inspect all of the devices for misalignment or bent pins. You may
have to remove devices until the bad device is found.