{{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 ====
   TILEMAP ENABLE (38,24,16)
   
   CLS YELLOW
   COLOR BORDER RED
   INK BLACK
   
   SCREEN ROWS 24
   SCREEN COLUMNS 38
   
   HOME
   ' PRINT "A";
   ' LOCATE SCREEN TILES WIDTH - 1, 0
   ' PRINT "B1";
   ' LOCATE SCREEN TILES WIDTH - 1, 1
   ' PRINT "B2";
   ' LOCATE SCREEN TILES WIDTH - 1, 2
   ' PRINT "B3";
   ' LOCATE 0, SCREEN TILES HEIGHT - 1
   ' PRINT "C";
   ' LOCATE SCREEN TILES WIDTH - 1, SCREEN TILES HEIGHT - 1
   ' PRINT "D";
   
   FOR i=0 TO SCREEN TILES HEIGHT - 1
      PRINT STRING(CHR$(65+i), SCREEN TILES WIDTH);
   NEXT
   
   x = 4
   y = 4
   up = 0
   down = 0
   
   SCREEN VERTICAL SCROLL y
   SCREEN HORIZONTAL SCROLL x
   
   BEGIN GAMELOOP
   
       k = SCANCODE
       j = JOY(0)
   
       IF (k > 0) OR (j > 0) THEN
   
           SELECT CASE k
               CASE KEY W
                   IF y > 0 THEN
                       DEC y
                   ELSE
                       up = 1
                       y = 7
                   ENDIF
               CASE KEY X
                   IF y < 7 THEN
                       INC y
                   ELSE
                       down = 1
                       y = 0
                   ENDIF
               CASE KEY A
                   IF x > 0 THEN
                       DEC x
                   ELSE
                       x = 7
                   ENDIF
               CASE KEY D
                   IF x < 7 THEN
                       INC x
                   ELSE
                       x = 0
                   ENDIF
           ENDSELECT
   
           SELECT CASE j
               CASE JOY UP
                   IF y > 0 THEN
                       DEC y
                   ELSE
                       up = 1
                       y = 7
                   ENDIF
               CASE JOY DOWN
                   IF y < 7 THEN
                       INC y
                   ELSE
                       down = 1
                       y = 0
                   ENDIF
               CASE JOY LEFT
                   IF x > 0 THEN
                       DEC x
                   ELSE
                       x = 7
                   ENDIF
               CASE JOY RIGHT
                   IF x < 7 THEN
                       INC x
                   ELSE
                       x = 0
                   ENDIF
           ENDSELECT
   
           SCREEN VERTICAL SCROLL y
           SCREEN HORIZONTAL SCROLL x
   
           IF down > 0 THEN
               VSCROLL SCREEN DOWN
               LOCATE 0, 0: PRINT "1234567890";
               down = 0
           ENDIF
   
           IF up > 0 THEN
               VSCROLL SCREEN UP
               LOCATE 0, 25: PRINT "1234567890";
               up = 0
           ENDIF
   
       ENDIF
   
   END GAMELOOP


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/scrolling_example_01.bas|scrolling_example_01.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 scrolling_example_01.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe scrolling_example_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 scrolling_example_01.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe scrolling_example_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 scrolling_example_01.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe scrolling_example_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 scrolling_example_01.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe scrolling_example_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 scrolling_example_01.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe scrolling_example_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 scrolling_example_01.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe scrolling_example_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 scrolling_example_01.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe scrolling_example_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 scrolling_example_01.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe scrolling_example_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 scrolling_example_01.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe scrolling_example_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 scrolling_example_01.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe scrolling_example_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 scrolling_example_01.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe scrolling_example_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 scrolling_example_01.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe scrolling_example_01.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 scrolling_example_01.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe scrolling_example_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 scrolling_example_01.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe scrolling_example_01.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco scrolling_example_01.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe scrolling_example_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 scrolling_example_01.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe scrolling_example_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 scrolling_example_01.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe scrolling_example_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, [[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 |}}]]