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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
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 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, open an issue for this example on GitHub. Thank you!
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