This small example will extract the prime numbers between 2 and 400. It has been taken and adapted by an exampled published on RetroProgramming Italia's Facebook group.
4 CLS 5 REM inizializzo limite massimo e array di flag 6 REM nums(x) = 0 -> x dentro 7 REM nums(x) = 1 -> x fuori 10 CONST maxn=400:DIM nums(maxn) 12 REM inizializzo timer e contatore di numeri primi 15 TI=0:np%=0 17 REM esamino tutti i numeri da 2 a maxn 20 FOR i=2 TO maxn 25 REM se il numero i è fuori dal crivello, passo al successivo 30 IF nums(i) <> 0 THEN : GOTO 90 : ENDIF 35 REM altrimenti i è primo. incremento contatore primi 36 REM stampo il primo i e mi preparo a generare i multipli 40 np%=np%+1:PRINT i,:k%=1 45 REM calcolo il multiplo come i*k (k=1,2,..) 46 REM finchè il multiplo è <= maxn 47 REM poi passo ad esaminare il prossimo i 50 multiplo=i*k% 60 IF multiplo>maxn THEN : GOTO 90 : ENDIF 70 REM metto il multiplo fuori dal crivello 80 nums(multiplo)=1 82 REM calcolo il prossimo multiplo da escludere 85 k%=k%+1:GOTO 50 90 NEXT 95 REM stampo il contatore dei numeri primi e il tempo trascorso 115 ct=(TI/60) 120 IF ct>60 THEN : ct=ct-60 : m%=m%+1 : GOTO 120 : ENDIF 130 PRINT:PRINT "time: ";m%;" min ";ct;" s" 140 PRINT CHR$(126);"(";c%;") =";np%
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.
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 contrib_primes4.bas -o example.xex altirra example.xex # Windows ugbc.atari.exe contrib_primes4.bas -o example.xex altirra example.xex
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 contrib_primes4.bas -o example.xex altirra example.xex # Windows ugbc.atarixl.exe contrib_primes4.bas -o example.xex altirra example.xex
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 contrib_primes4.bas -o example.prg x64sc example.prg # Windows ugbc.c64.exe contrib_primes4.bas -o example.prg x64sc example.prg
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 contrib_primes4.bas -o example.prg x64sc -reu example.prg # Windows ugbc.c64reu.exe contrib_primes4.bas -o example.prg x64sc -reu example.prg
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 contrib_primes4.bas -o example.prg yape example.prg # Windows ugbc.plus4.exe contrib_primes4.bas -o example.prg yape example.prg
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 contrib_primes4.bas -o example.prg xplus4 example.prg # Windows ugbc.plus4.exe contrib_primes4.bas -o example.prg xplus4 example.prg
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 contrib_primes4.bas -o example.bin xroar -rompath (your rom path) example.bin # Windows ugbc.d32.exe contrib_primes4.bas -o example.bin xroar.exe -rompath (your rom path) example.bin
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 contrib_primes4.bas -o example.bin xroar -rompath (your rom path) example.bin # Windows ugbc.d64.exe contrib_primes4.bas -o example.bin xroar.exe -rompath (your rom path) example.bin
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 contrib_primes4.bas -o example.k7 dcmoto (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC # Windows ugbc.pc128op.exe contrib_primes4.bas -o example.k7 dcmoto (choose example.k7) (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
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 contrib_primes4.bas -o example.k7 dcmoto (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC # Windows ugbc.pc128op.exe contrib_primes4.bas -o example.k7 dcmoto (choose example.k7) (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
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 contrib_primes4.bas -o example.prg xvic --memory 24k example.prg # Windows ugbc.vic20.exe contrib_primes4.bas -o example.prg xvic --memory 24k example.prg
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 contrib_primes4.bas -o example.tap Speccy example.tap # Windows ugbc.zx.exe contrib_primes4.bas -o example.tap Speccy example.tap
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:
# Linux ugbc.msx1 contrib_primes4.bas -o example.rom openmsx -cart example.rom # Windows ugbc.msx1.exe contrib_primes4.bas -o example.rom openmsx -cart example.rom
# Linux ugbc.msx1 contrib_primes4.bas -o example.rom bluemsx example.rom # Windows ugbc.msx1.exe contrib_primes4.bas -o example.rom bluemsx example.rom
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:
# Linux ugbc.coleco contrib_primes4.bas -o example.rom openmsx -machine \"COL - ColecoVision\" -cart example.rom # Windows ugbc.coleco.exe contrib_primes4.bas -o example.rom bluemsx -machine \"COL - ColecoVision\" example.rom
# Linux ugbc.coleco contrib_primes4.bas -o example.rom bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom # Windows ugbc.coleco.exe contrib_primes4.bas -o example.rom bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
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 contrib_primes4.bas -o example.rom bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom # Windows ugbc.sc3000.exe contrib_primes4.bas -o example.rom bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
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 contrib_primes4.bas -o example.rom bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom # Windows ugbc.sg1000.exe contrib_primes4.bas -o example.rom bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
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!