OTHER CONTRIBUTIONS: TIME CALIBRATION

This source is intended to verify how the implementation of the TIMER variable (TI) accurately measures time. For this purpose, it can be used to calibrate the passage of exactly 10 seconds. As added value, this source code explain how to detect if the computer is running under PAL or NTSC frequecy.

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SOURCE CODE ()

	CLS BLACK

	INK WHITE

	PRINT "*** TIMER CALIBRATION ***"

	PRINT
	PRINT "PAL    : "; PAL
	PRINT "NTSC   : "; NTSC
	PRINT "T.P.S. : "; TICKS PER SECOND
	PRINT

	PRINT "HARDWARE DETECTED: ";

	IF PAL THEN
		PRINT "PAL (50 Hz)"
	ELSE IF NTSC THEN
		PRINT "NTSC (60 Hz)"
	ELSE
		PRINT "unknown (not 50 Hz or 60 Hz)"
	ENDIF

	PRINT 

	PRINT "10 SECS -> ";

	DIM s AS BYTE = 0
	DIM t AS INTEGER = 0
	DIM dt AS INTEGER = 0

	DO
		t = TIMER

		WHILE ( TIMER - t ) < TICKS PER SECOND

			LOCATE 11 + s, 8

			dt = TIMER - t
			
			IF dt = 0 THEN
				PRINT ".";
			ELSEIF dt = ( TICKS PER SECOND / 4 ) THEN
				PRINT " ";
			ELSEIF dt = ( 2 * ( TICKS PER SECOND / 4 ) ) THEN
				PRINT ".";
			ELSEIF dt = ( 3 * ( TICKS PER SECOND / 4 ) ) THEN
				PRINT " ";
			ENDIF

		WEND
		
		LOCATE 11 + s, 8
		PRINT "*";
		
		INC s
		
		EXIT IF s = 10
		
	LOOP

	PRINT " (elapsed)"

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 contrib_calibration.dsk contrib_calibration.bas

Windows

ugbc.cpc.exe -O dsk -o contrib_calibration.dsk contrib_calibration.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 contrib_calibration.xex contrib_calibration.bas

Windows

ugbc.atarixl.exe -O xex -o contrib_calibration.xex contrib_calibration.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_calibration.xex contrib_calibration.bas

Windows

ugbc.atari.exe -O xex -o contrib_calibration.xex contrib_calibration.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 contrib_calibration.rom contrib_calibration.bas

Windows

ugbc.coleco.exe -O rom -o contrib_calibration.rom contrib_calibration.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_calibration.prg contrib_calibration.bas

Windows

ugbc.c128.exe -O prg -o contrib_calibration.prg contrib_calibration.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_calibration.prg contrib_calibration.bas

Windows

ugbc.c64.exe -O prg -o contrib_calibration.prg contrib_calibration.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_calibration.bin contrib_calibration.bas

Windows

ugbc.d32.exe -O bin -o contrib_calibration.bin contrib_calibration.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_calibration.bin contrib_calibration.bas

Windows

ugbc.d64.exe -O bin -o contrib_calibration.bin contrib_calibration.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 contrib_calibration.k7 contrib_calibration.bas

Windows

ugbc.pc128op.exe -O k7 -o contrib_calibration.k7 contrib_calibration.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 contrib_calibration.rom contrib_calibration.bas

Windows

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

Windows

ugbc.sg1000.exe -O rom -o contrib_calibration.rom contrib_calibration.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_calibration.bin contrib_calibration.bas

Windows

ugbc.coco.exe -O bin -o contrib_calibration.bin contrib_calibration.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 3

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

Linux

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

Windows

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

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

VIC-20

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

Linux

ugbc.vic20 -O prg -o contrib_calibration.prg contrib_calibration.bas

Windows

ugbc.vic20.exe -O prg -o contrib_calibration.prg contrib_calibration.bas

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

ZX Spectrum +2, ZX Spectrum 128K, ZX Spectrum 48K

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

Linux

ugbc.zx -O tap -o contrib_calibration.tap contrib_calibration.bas

Windows

ugbc.zx.exe -O tap -o contrib_calibration.tap contrib_calibration.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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