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ugbasic:user:example:procedures_shared_01
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ugBASIC User Manual

USER-DEFINED PROCEDURES USING SHARED VARIABLES

PURPOSE

This example will show how the shared variables works. First of all, we will declare 2 local variables (a AND b) by using the SHARED keyword. Then, we assign a value outside each procedures. Then the procedure is called. The result is that the original value have been changed by procedure execution, since those variables are shared (global).

SOURCE CODE

 
    CLS
 
    PROCEDURE example
       SHARED a,b
       a = b - a
       b = b + 1
    END PROC
 
    a = 42
    b = 84
 
    example[]
 
    PRINT "a = ";a
    PRINT "b = ";b
 
 

SOURCE FILE

HOW TO COMPILE AND RUN

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 compile the example with just one click.

ATARI 400/800 family

In order to compile and run the example, you need to have the Altirra emulator, and in particular that the altirra executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.atari procedures_shared_01.bas -o example.xex
 altirra example.xex
 
 # Windows 
 ugbc.atari.exe procedures_shared_01.bas -o example.xex
 altirra example.xex

ATARI 600XL/800XL/1200XL/XG(SE) family

In order to compile and run the example, you need to have the Altirra emulator, and in particular that the altirra executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.atarixl procedures_shared_01.bas -o example.xex
 altirra example.xex
 
 # Windows 
 ugbc.atarixl.exe procedures_shared_01.bas -o example.xex
 altirra example.xex

Commodore 64

In order to compile and run the example, you need to have the VICE emulator, and in particular that the x64sc executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.c64 procedures_shared_01.bas -o example.prg
 x64sc example.prg
 
 # Windows 
 ugbc.c64.exe procedures_shared_01.bas -o example.prg
 x64sc example.prg

Commodore PLUS/4

Using YAPE

In order to run the example, you need to have the YAPE emulator. In particular that the yape executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.plus4 procedures_shared_01.bas -o example.prg
 yape example.prg
 
 # Windows 
 ugbc.plus4.exe procedures_shared_01.bas -o example.prg
 yape example.prg
Using VICE

In order to run the example, you need to have the VICE emulator. In particular that the xplus4 executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.plus4 procedures_shared_01.bas -o example.prg
 xplus4 example.prg
 
 # Windows 
 ugbc.plus4.exe procedures_shared_01.bas -o example.prg
 xplus4 example.prg

Dragon 32

In order to compile and run the example, you need to have the XROAR emulator, and in particular that the xroar executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.d32 procedures_shared_01.bas -o example.bin
 xroar -rompath (your rom path) example.bin
 
 # Windows 
 ugbc.d32.exe procedures_shared_01.bas -o example.bin
 xroar.exe -rompath (your rom path) example.bin

Dragon 64

In order to compile and run the example, you need to have the XROAR emulator, and in particular that the xroar executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.d64 procedures_shared_01.bas -o example.bin
 xroar -rompath (your rom path) example.bin
 
 # Windows 
 ugbc.d64.exe procedures_shared_01.bas -o example.bin
 xroar.exe -rompath (your rom path) example.bin

PC128 Olivetti Prodest

In order to compile and run the example, you need to have the DCMOTO emulator, and in particular that the dcmoto executable is accessible.

Then, type this command on the command line and on the emulator:

 # Linux 
 ugbc.pc128op procedures_shared_01.bas -o example.k7
 dcmoto
 (choose BASIC 128)
 CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
 
 # Windows 
 ugbc.pc128op.exe procedures_shared_01.bas -o example.k7
 dcmoto
 (choose example.k7)
 (choose BASIC 128)
 CLEAR,&H2FFF: LOADM"CASS:",R: EXEC

Thomson MO5

In order to compile and run the example, you need to have the DCMOTO emulator, and in particular that the dcmoto executable is accessible.

Then, type this command on the command line and on the emulator:

 # Linux 
 ugbc.pc128op procedures_shared_01.bas -o example.k7
 dcmoto
 (choose BASIC 128)
 CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
 
 # Windows 
 ugbc.pc128op.exe procedures_shared_01.bas -o example.k7
 dcmoto
 (choose example.k7)
 (choose BASIC 128)
 CLEAR,&H2FFF: LOADM"CASS:",R: EXEC

Commodore VIC-20

In order to compile and run the example, you need to have the VICE emulator, and in particular that the xvic executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.vic20 procedures_shared_01.bas -o example.prg
 xvic --memory 24k example.prg
 
 # Windows 
 ugbc.vic20.exe procedures_shared_01.bas -o example.prg
 xvic --memory 24k example.prg

ZX Spectrum

In order to compile and run the example, you need to have the Speccy emulator, and in particular that the speccy executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.zx procedures_shared_01.bas -o example.tap
 Speccy example.tap
 
 # Windows 
 ugbc.zx.exe procedures_shared_01.bas -o example.tap
 Speccy example.tap

MSX

In order to compile and run the example, you need to have the openMsx or the BlueMSX emulator, and in particular that its executable is accessible.

Then, type this command on the command line:

openMSX
 # Linux 
 ugbc.msx1 procedures_shared_01.bas -o example.rom
 openmsx -cart example.rom
 
 # Windows 
 ugbc.msx1.exe procedures_shared_01.bas -o example.rom
 openmsx -cart example.rom
blueMSX
 # Linux 
 ugbc.msx1 procedures_shared_01.bas -o example.rom
 bluemsx example.rom
 
 # Windows 
 ugbc.msx1.exe procedures_shared_01.bas -o example.rom
 bluemsx example.rom

ColecoVision

In order to compile and run the example, you need to have the openMsx or the BlueMSX emulator, and in particular that its executable is accessible.

Then, type this command on the command line:

openMSX
 # Linux 
 ugbc.coleco procedures_shared_01.bas -o example.rom
 openmsx -machine \"COL - ColecoVision\" -cart example.rom
 
 # Windows 
 ugbc.coleco.exe procedures_shared_01.bas -o example.rom
 bluemsx -machine \"COL - ColecoVision\" example.rom
blueMSX
 # Linux 
 ugbc.coleco procedures_shared_01.bas -o example.rom
 bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
 
 # Windows 
 ugbc.coleco.exe procedures_shared_01.bas -o example.rom
 bluemsx  /machine \"COL - ColecoVision\" /rom1 example.rom

SEGA SC-3000

In order to compile and run the example, you need to have the BlueMSX emulator, and in particular that its executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.sc3000 procedures_shared_01.bas -o example.rom
 bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
 
 # Windows 
 ugbc.sc3000.exe procedures_shared_01.bas -o example.rom
 bluemsx  /machine \"SEGA - SC-3000\" /rom1 example.rom

SEGA SG-1000

In order to compile and run the example, you need to have the BlueMSX emulator, and in particular that its executable is accessible.

Then, type this command on the command line:

 # Linux 
 ugbc.sg1000 procedures_shared_01.bas -o example.rom
 bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
 
 # Windows 
 ugbc.sg1000.exe procedures_shared_01.bas -o example.rom
 bluemsx  /machine \"SEGA - SG-1000\" /rom1 example.rom

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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