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EV80C196KB Microcontroller Evaluation Board User's Manual -25
Controlling Lengthy Commands
Most of the commands supported by iECM-96 appear to complete without delay.
Some commands (e.g. displaying or filling a large area of memory) take an appre-
ciable length of time to complete.
In general these commands can be aborted by
entering a CARRIAGE-RETURN.
Those commands which display a large amount
of information can be paused by hitting the SPACE bar. After you have checked the
data currently on the screen you can depress the SPACE bar again to resume the
output.
Aborting from iECM-96
Entering a control-C will cause the iECM-96 to close any open files and return to
DOS.
Initiating and Terminating iECM=96
This section describes the commands for invoking iECM-96 from DOS and exiting
back to DOS.
ECM96
This command, entered at the DOS prompt, loads the iECM-96 software and exe-
cutes it. Several options are available with this command. Option strings always
start with a hyphen ("-'I) and can be entered in upper or lower case. The operation
of these options is described below. Any or all of these options can be entered in
any order, if the options are contradictory then the actual option accepted is the last
one entered.
-COM2, -COMl
These options tell the iECM-96 software which serial communication port is to be
used. If neither of these options is entered then COMl will be used as a default. If
iECM-96 detects valid CTS (Clear To Send) and DSR (Data Set Ready) signals from
the appropriate COM port it will sign on and display a command prompt. If the target
is stopped the command prompt will be an asterisk ("*"). If the target is already
running the prompt will be a greater-than sign (5").
-DIAG
If CTS or DSR are not present, iECM-96 will complain about it and ask if you want to
proceed or exit. It is possible, but not likely, that iECM-96 will operate properly even
after compl'aining.
It is more likely that there is a problem with the serial port or the
cabling which will prevent proper operation.
If the problem is not obvious (e.g.
disconnected cable or no power to the target hardware) then the -DIAG invocation
option can be used to help isolate the problem. The -DIAG option puts the iECM-96
system in a special mode which allows many tests to be used to find interfacing
problems, or target bugs.
The diagnostic mode is intended to support debugging of boards which use the
iECM-96.
It can be particularly useful in systems which have multiple address
decoding modes, such as the EV80C196KB.
Upon reset this board has EPROM at
location 2080H, the address where the 8OC196KB starts execution.
After executing
some initialization code, the board can change the address decoding so that
ROMsim/RAM is available in the partition which contains 2080H and the RISM is
relocated to another area. This allows you to download code which is designed to
operate in the on-chip ROM of MCS-96 family parts (2000H - 3FFFH).
The diagnos-
tic mode allows the use of diagnostic routines which disappear from memory space
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