OTHER CONTRIBUTIONS: MEMORY SCANNER

A RAM-scanner, written (originally) in XC=BASIC by the Italian JJ Flash, and translated in ugBASIC which displays part of the contents of the RAM, in PETSCII characters. With it you can run from one part of the retro computer memory to another by simply using the joystick. A nice example of how to take advantage of the powerful MMOVE instruction.

Click here for more informations.

source compile sandbox issues? back to examples

SOURCE CODE ()

	VAR wSourceAddress AS ADDRESS = 0

	INK WHITE

	CLS

	DO

		MMOVE wSourceAddress TO VIDEO TEXTADDRESS SIZE ( SCREEN ROWS - 1 ) * SCREEN COLUMNS
		
		LOCATE 0, (SCREEN ROWS - 1)
		PRINT wSourceAddress; "    ";

		joy = JOY(0): kbd = SCANCODE
		IF ( joy HAS BIT LEFT ) OR ( kbd = KEY A ) THEN 
			wSourceAddress = wSourceAddress - 1
		ENDIF
		IF ( joy HAS BIT RIGHT ) OR ( kbd = KEY S ) THEN
			wSourceAddress = wSourceAddress + 1
		ENDIF
		IF ( joy HAS BIT UP ) OR ( kbd = KEY W ) THEN
			wSourceAddress = wSourceAddress - 80
		ENDIF
		IF ( joy HAS BIT DOWN ) OR ( kbd = KEY Z ) THEN
			wSourceAddress = wSourceAddress + 80
		ENDIF
		
	LOOP

How to compile and run the example

The instructions here refer to compiling the example from the command line. For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile each single example with just one click.



Are instructions for your specific home computer / console missing? First of all, check if your computer is supported by clicking here. If so, since ugBASIC is a language which does not provide abstractions, it is possible that this example will not work on your target. If you think this is an issue, please click here.

Atari 1200XL, Atari 130XE, Atari 600XL, Atari 65XE, Atari 800XE, Atari 800XL, Atari XEGS

In order to compile the example, type this command on the command line:

Linux

ugbc.atarixl -O xex -o contrib_memory_scan.xex contrib_memory_scan.bas

Windows

ugbc.atarixl.exe -O xex -o contrib_memory_scan.xex contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Atari 400, Atari 800

In order to compile the example, type this command on the command line:

Linux

ugbc.atari -O xex -o contrib_memory_scan.xex contrib_memory_scan.bas

Windows

ugbc.atari.exe -O xex -o contrib_memory_scan.xex contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 128 (CPU 8502)

In order to compile the example, type this command on the command line:

Linux

ugbc.c128 -O prg -o contrib_memory_scan.prg contrib_memory_scan.bas

Windows

ugbc.c128.exe -O prg -o contrib_memory_scan.prg contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 64, Commodore Executive 64

In order to compile the example, type this command on the command line:

Linux

ugbc.c64 -O prg -o contrib_memory_scan.prg contrib_memory_scan.bas

Windows

ugbc.c64.exe -O prg -o contrib_memory_scan.prg contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Dragon 32

In order to compile the example, type this command on the command line:

Linux

ugbc.d32 -O bin -o contrib_memory_scan.bin contrib_memory_scan.bas

Windows

ugbc.d32.exe -O bin -o contrib_memory_scan.bin contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Dragon 64

In order to compile the example, type this command on the command line:

Linux

ugbc.d64 -O bin -o contrib_memory_scan.bin contrib_memory_scan.bas

Windows

ugbc.d64.exe -O bin -o contrib_memory_scan.bin contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

TRS-80 Color Computer, TRS-80 Color Computer 2

In order to compile the example, type this command on the command line:

Linux

ugbc.coco -O bin -o contrib_memory_scan.bin contrib_memory_scan.bas

Windows

ugbc.coco.exe -O bin -o contrib_memory_scan.bin contrib_memory_scan.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Any problem?

If you have found a problem trying to run this example, if you think there is a bug or, more simply, you would like it to be improved, open an issue for this example on GitHub.
Thank you!

open an issue BACK TO EXAMPLES