{{htmlmetatags>metatag-robots=()
metatag-title=(BASIC COMMANDS SWAP NUMBERS | ugBASIC User Manual)
metatag-keywords=(ugBASIC,Commodore 64,Commodore PLUS/4,ZX Spectrum)
metatag-description=(An isomorphic language for retrocomputers)
metatag-media-og:image=(:ugbasic:logo-ugbasic-fb.png)
metatag-og:title=(BASIC COMMANDS SWAP NUMBERS | ugBASIC User Manual) 
metatag-og:description=(An isomorphic language for retrocomputers)
}}

====== ugBASIC User Manual ======

===== BASIC COMMANDS SWAP NUMBERS =====

==== PURPOSE ====
 This example shows how to exchange two variables of the same type.  

==== SOURCE CODE ====
   
       CLS
   
       DIM firstbs AS SIGNED BYTE, secondbs AS SIGNED BYTE
       DIM firstbu AS BYTE, secondbu AS BYTE
   
   	DIM firstws AS SIGNED WORD, secondws AS SIGNED WORD
       DIM firstwu AS WORD, secondwu AS WORD
   
   	DIM firstds AS SIGNED DWORD, secondds AS SIGNED DWORD
       DIM firstdu AS DWORD, seconddu AS DWORD
   
       firstbs = -42: secondbs = 24
       firstbu = 42: secondbu = 24
   
   	firstws = -4200: secondws = 2400
    	firstwu = 4200: secondwu = 2400
   
   	firstds = -1024000: secondds = 204800
       firstdu = 1024000: seconddu = 204800
       
       SWAP firstbs, secondbs
       SWAP firstbu, secondbu
   
   	SWAP firstws, secondws
    	SWAP firstwu, secondwu
   
   	SWAP firstds, secondds
       SWAP firstdu, seconddu
   
   	PRINT "BYTE SIGNED:";    
   	IF firstbs = 24 THEN
   		PRINT "OK (1) ";
   	ELSE
   		PRINT "FAIL (1) = ";firstbs
       ENDIF    
       IF secondbs = -42 THEN
   		PRINT "OK (2) ";    
   	ELSE
   		PRINT "FAIL (2) = ";secondbs
       ENDIF
   
       PRINT
       
   	PRINT "BYTE UNSIGNED:";    
       IF firstbu = 24 THEN
   		PRINT "OK (1) ";
   	ELSE
   		PRINT "FAIL (2) = ";firstbu
       ENDIF
       IF secondbu = 42 THEN
   		PRINT "OK (2) ";    
       ENDIF
   
       PRINT
   
   	PRINT "WORD SIGNED:";    
   	IF firstws = 2400 THEN
   		PRINT "OK (1) ";
   	ENDIF
   	IF secondws = -4200 THEN
   		PRINT "OK (2) ";	
   	ENDIF
   	
       PRINT
       
   	PRINT "WORD UNSIGNED:";    
    	IF firstwu = 2400 THEN
   		PRINT "OK (1) ";
    	ENDIF 	
    	IF secondwu = 4200 THEN
   		PRINT "OK (2) ";
    	ENDIF
   
   	PRINT
   
   	PRINT "DWORD SIGNED:";    	
   	IF firstds = 204800 THEN
   		PRINT "OK (1) ";
   	ENDIF
   	IF secondds = -1024000 THEN
   		PRINT "OK (2) ";
   	ENDIF
   	
   	PRINT
   	
   	PRINT "DWORD UNSIGNED:";    	
       IF firstdu = 204800 THEN
   		PRINT "OK (1) ";
       ENDIF
       IF seconddu = 1024000 THEN
   		PRINT "OK (2) ";
       ENDIF
       
   


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/basic_swap.bas|basic_swap.bas]]''
==== HOW TO COMPILE AND RUN ====
The instructions here refer to compiling the example from the command line. For Microsoft Windows users we suggest using **[[https://spotlessmind1975.itch.io/ugbasic-ide|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 basic_swap.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe basic_swap.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 basic_swap.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe basic_swap.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 basic_swap.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe basic_swap.bas -o example.prg
   x64sc example.prg
=== Commodore 64+REU ===
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.c64reu basic_swap.bas -o example.prg
   x64sc -reu example.prg
   
   # Windows 
   ugbc.c64reu.exe basic_swap.bas -o example.prg
   x64sc -reu 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 basic_swap.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe basic_swap.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 basic_swap.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe basic_swap.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 basic_swap.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe basic_swap.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 basic_swap.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe basic_swap.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 basic_swap.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe basic_swap.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 basic_swap.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe basic_swap.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 basic_swap.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe basic_swap.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 basic_swap.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe basic_swap.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 basic_swap.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe basic_swap.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 basic_swap.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe basic_swap.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 basic_swap.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe basic_swap.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco basic_swap.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe basic_swap.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 basic_swap.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe basic_swap.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 basic_swap.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe basic_swap.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, [[https://github.com/spotlessmind1975/ugbasic/issues/new?title=IMPROVE BASIC COMMANDS SWAP NUMBERS|open an issue]] for this example on GitHub. Thank you!===== POWERED BY =====

[[:ugbasic:user:examples|{{ :ugbasic:user:logo-ugbasic.png?nolink&600 |}}]]