{{htmlmetatags>metatag-robots=()
metatag-title=(  | 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=(  | ugBASIC User Manual) 
metatag-og:description=(An isomorphic language for retrocomputers)
}}

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

=====   =====

==== PURPOSE ====


==== SOURCE CODE ====
   ' Tipo di dato predefinito: privo di segno
   OPTION TYPE UNSIGNED
   
   ' Tipo di dato predefinito: BYTE (8 bit)
   OPTION DEFAULT TYPE BYTE
   
   ' Indirizzo di partenza da dove disegnare il prossimo fotogramma.
   DIM actualAddress AS WORD = &H3008 
   
   ' Indirizzo usato per disegnare il fotogramma
   DIM startingAddress AS WORD = &H3000
   
   ' Flag: 
   '   0 -> muovi verso destra; 
   '   1 -> muovi verso sinistra
   DIM increment AS BYTE = 0
   
   ' Abilita l'LCD
   
   SCREEN ON
   
   ' Questa procedura si occupa di disegnare il fotogramma
   ' con la scritta "HI".
   PROCEDURE drawHi
   
   	' L'indirizzo condiviso dal programma principale.
   	
   	SHARED startingAddress
   
   	' I valori da usare per riempire le locazioni
   	' di memoria (uso delle variabili per garantire
   	' che siano prive di segno. In realtà potrei
   	' usare delle costanti che non occupano spazio,
   	' ma al momento l'ML non è completo).
   	
   	DIM filled AS BYTE = &HFF
   	DIM middle AS BYTE = &H18
   	DIM none AS BYTE = &H00
   	
   	' Disegno l'H (5x8 pixel)
   
   	POKE startingAddress, filled: INC startingAddress
   	POKE startingAddress, filled: INC startingAddress
   	POKE startingAddress, middle: INC startingAddress
   	POKE startingAddress, filled: INC startingAddress
   	POKE startingAddress, filled: INC startingAddress
   
   	' Ora disegno la I (3x8 pixel)
   
   	POKE startingAddress, none: INC startingAddress
   	POKE startingAddress, filled: INC startingAddress
   	POKE startingAddress, filled
   
   END PROC
   
   ' Questa procedura cancella lo spazio dove prima si
   ' trovava l'HI (e intorno).
   PROCEDURE clearHi
   
   	' L'indirizzo condiviso dal programma principale.
   	
   	SHARED startingAddress
   
   	' I valori da usare per riempire le locazioni
   	' di memoria (uso delle variabili per garantire
   	' che siano prive di segno. In realtà potrei
   	' usare delle costanti che non occupano spazio,
   	' ma al momento l'ML non è completo).
   	
   	DIM index AS BYTE = &H00
   	DIM none AS BYTE = &H00
   
   	' Se sto cancellando oltre gli 8 colonne a destra,
   	' inizio a cancellare da 8 colonne a sinistra.
   	' Altrimenti inizio dalla colonna zero.
   	
   	IF startingAddress > 8 THEN
   		startingAddress = startingAddress - 8
   	ELSE
   		startingAddress = 0
   	ENDIF
   
   	' Faccio un loop per 16 colonne di larghezza.
   	
   	DO
   		' Cancello la colonna
   		POKE startingAddress, none: INC startingAddress
   		
   		' Conto le colonne: se ne ho cancellate 16, finisco.
   		
   		INC index
   		
   		EXIT IF index > 16
   	LOOP		
   	
   END PROC
   
   ' Loop infinito.
   
   DO
   
   	' Prima di tutto cancelliamo lo schermo dove si trova
   	' l'ultima scritta "HI" disegnata.
   	
   	startingAddress = actualAddress
   	clearHi[]
   
   	' Se mi devo spostare in avanti, incremento l'indirizzo
   	' della colonna da cui iniziare a disegnare "HI",
   	' fino a che non arrivo al limite a destra.
   	
   	IF increment = 0 THEN
   		INC actualAddress
   		IF actualAddress > &H300f THEN
   			increment = 1
   		ENDIF
   
   	' Altrimenti mi devo spostare indietro di una colonna,
   	' almeno fino a che non arrivo all'inizio dello schermo.
   
   	ELSE
   		DEC actualAddress
   		IF actualAddress < &H3008 THEN
   			increment = 0
   		ENDIF
   	ENDIF
   
   	' Ora posso disegnare "HI".
   	startingAddress = actualAddress
   	drawHi[]
   	
   	' Rallentiamo un po' sennò non si vede niente...
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   	WAIT 200 CYCLES
   		
   LOOP


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/moving_demo.bas|moving_demo.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 moving_demo.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe moving_demo.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 moving_demo.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe moving_demo.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 moving_demo.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe moving_demo.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 moving_demo.bas -o example.prg
   x64sc -reu example.prg
   
   # Windows 
   ugbc.c64reu.exe moving_demo.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 moving_demo.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe moving_demo.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 moving_demo.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe moving_demo.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 moving_demo.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe moving_demo.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 moving_demo.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe moving_demo.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 moving_demo.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe moving_demo.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 moving_demo.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe moving_demo.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 moving_demo.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe moving_demo.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 moving_demo.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe moving_demo.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 moving_demo.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe moving_demo.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 moving_demo.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe moving_demo.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 moving_demo.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe moving_demo.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco moving_demo.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe moving_demo.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 moving_demo.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe moving_demo.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 moving_demo.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe moving_demo.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  |open an issue]] for this example on GitHub. Thank you!===== POWERED BY =====

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