Texas Instruments TMS320C3 Series, User Manual, Page: 26 / 166

Step 5: Verifying the Installation
2-8
If you see a display similar the one shown in Figure 2–3, you have correctly
installed your DSK board, assembler, and debugger. If you see the display
shown in Example 2–1, then your software or cable may not be installed prop-
erly. Go through the installation instructions again and make sure that you
have followed each step correctly; then reenter the
dsk3d
command above.
Installation errors
If you still do not see the debugger display, one or more of the following condi-
tions may be the cause:
-
You may have used an incorrect communication port (LPT1 versus LPT2).
-
A printer driver or other software may be using the same communication
port that you are attempting to use with the DSK. If so, try another commu-
nication port for the DSK.
-
Your printer port cable and connectors may not be connected snugly.
-
Your power transformer may not be plugged in on both ends. If the DSK
is receiving power, then the LED will illuminate either red or green.
Some operating systems do not use conventional AT I/O port addresses when
mapping port names to addresses. For example, an EISA PC or IBM PS/2
might assign port 0x3BC as LPT1 instead of LPT3. If this is the case, you
should use LPT3 to start the DSK, since the DSK works from a physical ad-
dress instead of the port name LPTx. The last three lines of Example 2–1 show
the operating system’s lookup table (located at RAM address 0000 0040) that
maps physical addresses to port names. This may help you to determine which
ports are in use and which name is associated with each port for a particular
address. The information in the lookup table in Example 2–1 may not be accu-
rate since network and operating system software also uses this table for redi-
recting printer output.