Identifying The Correct I/O Switches; Setting The Iopl Option; Identifying Nondefault I/O Address Space - Texas Instruments TMS320C2 Series Installation Manual

Identifying the correct I/O switches

Refer to your entries in Table 1–2 (page 1-5). If you didn't modify the I/O
switches, you can skip this step.
If you modified the I/O switch settings, you must use the debugger's –p option
to identify the I/O space that the emulator is using. You can do this each time
you invoke the debugger, or you can specify this information by using the
D_OPTIONS environment variable. Table 1–4 lists the I/O nondefault switch
setting and the appropriate line that you can add to the config.sys or initdb.cmd
file.
Table 1–4. Identifying Nondefault I/O Address Space

Setting the IOPL option

You must override the default IOPL setting. IOPL is an OS/2-specific option
that prevents you from accessing your emulator. To override the default set-
ting, set IOPL to YES by adding the following line to your config.sys file:
IOPL=YES
Note:
You must set the IOPL option in the config.sys file; you cannot access it in
any other way.
Address Range
0x0280–0x029F
0x0320–0x033F
0x0340–0x035F
Installing the Emulator and C Source Debugger With OS/2
Step 4: Setting Up the Debugger Environment
switch # Add this line to the
1 2 batch file
on off
SET D_OPTIONS=–p 280
off on
SET D_OPTIONS=–p 320
off off
SET D_OPTIONS=–p 340
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