MULTI TASKING: PRE-EMPTIVE PARALLEL COMPUTING

This example will draw, separately, the four angles of a square.

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SOURCE CODE ()

    BITMAP ENABLE (16)

    POSITIVE CONST limit = MIN( SCREEN WIDTH-1, SCREEN HEIGHT-1 )

    CLS

    PARALLEL PROCEDURE proc1
        FOR x=0 TO limit STEP 10
            DRAW 0,x TO x,limit
        NEXT
    END PROC

    PARALLEL PROCEDURE proc2
        FOR x=0 TO limit STEP 10
            DRAW x,0 TO 0,limit-x
        NEXT
    END PROC

    PARALLEL PROCEDURE proc3
        FOR x=0 TO limit STEP 10
            DRAW x,0 TO limit,x
        NEXT
    END PROC

    PARALLEL PROCEDURE proc4
        FOR x=0 TO limit STEP 10
            DRAW x,limit TO limit,limit-x
        NEXT
    END PROC

    SPAWN proc1
    SPAWN proc2
    SPAWN proc3
    SPAWN proc4

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.

Amstrad CPC 464, Amstrad CPC 6128, Amstrad CPC 664

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

Linux

ugbc.cpc -O dsk -o multitasking_example_05.dsk multitasking_example_05.bas

Windows

ugbc.cpc.exe -O dsk -o multitasking_example_05.dsk multitasking_example_05.bas

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

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 multitasking_example_05.xex multitasking_example_05.bas

Windows

ugbc.atarixl.exe -O xex -o multitasking_example_05.xex multitasking_example_05.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 multitasking_example_05.xex multitasking_example_05.bas

Windows

ugbc.atari.exe -O xex -o multitasking_example_05.xex multitasking_example_05.bas

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

COCO 1/2 (Motorola 6809)

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

Linux

ugbc.coco -O bin -o multitasking_example_05.bin multitasking_example_05.bas

Windows

ugbc.coco.exe -O bin -o multitasking_example_05.bin multitasking_example_05.bas

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

COCO 3 (Motorola 6809)

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

Linux

ugbc.coco3 -O bin -o multitasking_example_05.bin multitasking_example_05.bas

Windows

ugbc.coco3.exe -O bin -o multitasking_example_05.bin multitasking_example_05.bas

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

Coleco Vision, Dina (Chuang Zao Zhe 50), SpectraVideo SV-603 VGA

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

Linux

ugbc.coleco -O rom -o multitasking_example_05.rom multitasking_example_05.bas

Windows

ugbc.coleco.exe -O rom -o multitasking_example_05.rom multitasking_example_05.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 multitasking_example_05.prg multitasking_example_05.bas

Windows

ugbc.c128.exe -O prg -o multitasking_example_05.prg multitasking_example_05.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 multitasking_example_05.prg multitasking_example_05.bas

Windows

ugbc.c64.exe -O prg -o multitasking_example_05.prg multitasking_example_05.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 (Motorola 6809)

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

Linux

ugbc.d32 -O bin -o multitasking_example_05.bin multitasking_example_05.bas

Windows

ugbc.d32.exe -O bin -o multitasking_example_05.bin multitasking_example_05.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 (Motorola 6809)

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

Linux

ugbc.d64 -O bin -o multitasking_example_05.bin multitasking_example_05.bas

Windows

ugbc.d64.exe -O bin -o multitasking_example_05.bin multitasking_example_05.bas

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

Olivetti Prodest PC128, Thomson MO6

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

Linux

ugbc.pc128op -O k7 -o multitasking_example_05.k7 multitasking_example_05.bas

Windows

ugbc.pc128op.exe -O k7 -o multitasking_example_05.k7 multitasking_example_05.bas

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

SEGA SC-3000

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

Linux

ugbc.sc3000 -O rom -o multitasking_example_05.rom multitasking_example_05.bas

Windows

ugbc.sc3000.exe -O rom -o multitasking_example_05.rom multitasking_example_05.bas

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

SEGA SG-1000

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

Linux

ugbc.sg1000 -O rom -o multitasking_example_05.rom multitasking_example_05.bas

Windows

ugbc.sg1000.exe -O rom -o multitasking_example_05.rom multitasking_example_05.bas

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

Thomson TO8

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

Linux

ugbc.to8 -O k7 -o multitasking_example_05.k7 multitasking_example_05.bas

Windows

ugbc.to8.exe -O k7 -o multitasking_example_05.k7 multitasking_example_05.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!

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