Radio Shack TRS-80 Model 100 Basic Manual page 176

Experiment #3 LOADing a BASIC Program
Suppose you have written a BASIC program on another computer which you want to
execute on your Model 100. The serial port can be used to transfer the BASIC
program to working memory using the following procedure.
1. Connect the computers together as shown in the last two experiments.
2. From the Model 100 Main Menu, enter BASIC.
3. Enter the command
LOAD "COM:RWPBS"
where
RWPBS
correspond to the baud rate, number of data bits, parity, number
of stop bits and line status (XON/XOFF) of the other computer.
4. Load and execute a communications program on the other computer which will
transfer a BASIC program in ASCII format. This program should send a control
Z (ASCII value 26 decimal) as an end-of-file character. If the other computer's
program does not terminate the file in this fashion, you can terminate the load
manually from the M100 keyboard by pressing (BREAK).
Note: (BREAK) terminates transfer with an I/O (input/output) error message.
Ignore this message. The data has been transferred.
5. Since the program does not display as it is loaded, you will probably want to list
it to confirm that it was transferred properly. If a few errors are found, they can
be corrected using the Editor. After the file has been successfully transferred, it
can be saved in RAM in the usual way.
Experiment #4 Loading a File with TELCOM
You can transfer any ASCII file to the Model 100 from another computer using
TELCOM. This includes a BASIC program so long as
it
is transferred in ASCII
format. The procedure is:
l. Link the Computers through an RS-232C cable and a Null Modem Adapter.
2. From the Model 100 Main Menu, enter TELCOM.
3. If necessary, l:hange the wmmunkation parameters to match those of the host
system.
4. Press
~
to enter the Terminal Mode.
5. Press
~
to Download a file. The prompt:
File to Download? •
will be displayed. Enter a valid filename with either no extension or a .DO
extension. If you enter a filename with the .BA extension, the error message:
Download aborted
will appear, since BASIC programs can only be transferred in the ASCII format.
After the filename is entered, the word Down will appear in reverse video.
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