Texas Instruments MINI MEMORY Handbuch Seite 6

~
Texas Instruments
This manual discusses the features of the Line-by-Line Assembler, assuming that you already know
assembly language programming. For a complete reference guide to the TMS9900 assembly lan-
guage, see the Editor/ Assembler owner's manual. Instructions for running the LINES demonstration
program are also given in this manual (see »Loading the Line-by-Line Assembler«).
Note: The LINES program is operational only on the Tl99/4A Home Computer, which has the enhan-
ced graphics processor required by the program.
LOADING THE LINE-BY-LINE ASSEMBLER
Both the Line-by-Line Assembler and the LINES graphics program are loaded at the same time from
the cssette tape by the L (LOAD) command of the EASY BUG debugger option. The steps below
describe the loading procedure.
1. With the Mini Memory module installed in the computer console, attach your cassette recorder/
player to the console, as described in the User's Reference Guide.
2. Press any key to make the master selection list appear, and select the Mini Memory option from
the list. When the Mini memory selection list appears, press 3 for REINITIALIZE to prepare the me-
mory for loading a new program. Then press QUITto return to the computer's master title screen.
3. Insert the Assembler cassette into the recorder, and rewind the cassette.
4. Press any key to make the master selection list appear, and then selectthe EASY BUG option from
the list.
5. When the EASY BUG command description screen appears, press any key to clear the screen.
Then type Land press ENTER to start the loading process. From this point on, the screen displays
instructions to help you through the procedure. Follow these directions to load the program.
6. After the Assembler program is loaded, pressQUITto return to the mastertitlescreen. Then press
any key to go on to the master selection. list, and select the Mini Memory option.
7. When the Mini Memory selection list appears, press 2 to selectthe RUN option. The screen clears,
and the program prompts you for the name of the program you want to run.
A)
If you wantto run the LINES program (available only on the Tl99/4A, type LINES and press ENTER.
The program draws a colorful line design on the screen. If you press the C key, you can »freeze«
the color of the current line, and all subsequent lines will be that color. Pressing C again cancels
the single-color effect. To stop the program, press QUIT.
B) If you wantto creat a new assembly language program, type NEW and press ENTER. The program
enters the Assembler, clears the Symbol Table (more on this later), and waits for your first pro-
gram line entry. downloaded from www.ti99iuc.it
C) If you want to continue writing a program that you began previously, type OLD and press ENTER.
The old Symbol Table is retained, and the screen displays the next memory location, ready for you
to continue your program.
Note: Your Mini Memory module may already be loaded with the Assembler and LINES programs. To
check, select the Mini Memory RUN option, and enter the appropriate program name when the
prompt appears. If present, the program immediately begins to run. lfthe program has not been loa-
ded into the module, the screen reports »PROGRAM NOT FOUND«.
4