{{htmlmetatags>metatag-robots=()
metatag-title=(MATHEMATIC ROUTINES CHECKING SIGN / UNSIGN CONVERSION | ugBASIC User Manual)
metatag-keywords=(ugBASIC,Commodore 64,Commodore PLUS/4,ZX Spectrum)
metatag-description=(An isomorphic language for retrocomputers)
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metatag-og:title=(MATHEMATIC ROUTINES CHECKING SIGN / UNSIGN CONVERSION | ugBASIC User Manual) 
metatag-og:description=(An isomorphic language for retrocomputers)
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====== ugBASIC User Manual ======

===== MATHEMATIC ROUTINES CHECKING SIGN / UNSIGN CONVERSION =====

==== PURPOSE ====
 This example allows you to verify that the assignment between signed and unsigned integer types works correctly.  

==== SOURCE CODE ====
   
   CLS
   
   DIM sb AS SIGNED BYTE, ub AS BYTE
   DIM sw AS SIGNED WORD, uw AS WORD
   DIM sd AS SIGNED DWORD, ud AS DWORD
   
   PRINT " 8>16) ";
   sb = -42: sw = sb: IF sw <> -42 THEN: PRINT "(1)";: ENDIF
   sb = -42: uw = sb: IF uw <> $FFD6 THEN: PRINT "(2)";: ENDIF
   ub = 192: sw = ub: IF sw <> 192 THEN: PRINT "(3)";: ENDIF
   ub = 192: uw = ub: IF uw <> 192 THEN: PRINT "(4)";: ENDIF
   PRINT
   
   PRINT " 8>32) ";
   sb = -42: sd = sb: IF sd <> -42 THEN: PRINT "(1)";: ENDIF
   sb = -42: ud = sb: IF ud <> $FFFFFFD6 THEN: PRINT "(2)";:ENDIF
   ub = 42: sd = ub: IF sd <> 42 THEN: PRINT "(3)";: ENDIF
   ub = 42: ud = ub: IF ud <> 42 THEN: PRINT "(4)";: ENDIF
   PRINT
   
   PRINT "16> 8) ";
   sw = -42: sb = sw: IF sb <> -42 THEN: PRINT "(1)";: ENDIF
   sw = -42: ub = sw: IF ub <> $D6 THEN: PRINT "(2)";: ENDIF
   uw = 42: sb = uw: IF sb <> 42 THEN: PRINT "(3)";: ENDIF
   uw = 42: ub = uw: IF ub <> 42 THEN: PRINT "(4)";: ENDIF
   PRINT
   
   PRINT "16>32) ";
   sw = -42: sd = sw: IF sd <> -42 THEN: PRINT "(1)";: ENDIF
   sw = -42: ud = sw: IF ud <> $FFFFFFD6 THEN: PRINT "(2)";: ENDIF
   uw = 42: sd = uw: IF sd <> 42 THEN: PRINT "(3)";: ENDIF
   uw = 42: ud = uw: IF ud <> 42 THEN: PRINT "(4)";: ENDIF
   PRINT
   
   PRINT "32> 8) ";
   sd = -42: sb = sd: IF sb <> -42 THEN: PRINT "(1)";: ENDIF
   sd = -42: ub = sd: IF ub <> $D6 THEN: PRINT "(2)";: ENDIF
   ud = 42: sb = ud: IF sb <> 42 THEN: PRINT "(3)";: ENDIF
   ud = 42: ub = ud: IF ub <> 42 THEN: PRINT "(4)";: ENDIF
   PRINT
   
   PRINT "32>16) ";
   sd = -42: sw = sd: IF sw <> -42 THEN: PRINT "(1)";: ENDIF
   sd = -42: uw = sd: IF uw <> $FFD6 THEN: PRINT "(2) = ";uw: ENDIF
   ud = 42: sw = ud: IF sw <> 42 THEN: PRINT "(3)";: ENDIF
   ud = 42: uw = ud: IF uw <> 42 THEN: PRINT "(4)";: ENDIF
   PRINT
   
   


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/maths_relative_04.bas|maths_relative_04.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 maths_relative_04.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe maths_relative_04.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 maths_relative_04.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe maths_relative_04.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 maths_relative_04.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe maths_relative_04.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 maths_relative_04.bas -o example.prg
   x64sc -reu example.prg
   
   # Windows 
   ugbc.c64reu.exe maths_relative_04.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 maths_relative_04.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe maths_relative_04.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 maths_relative_04.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe maths_relative_04.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 maths_relative_04.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe maths_relative_04.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 maths_relative_04.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe maths_relative_04.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 maths_relative_04.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe maths_relative_04.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 maths_relative_04.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe maths_relative_04.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 maths_relative_04.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe maths_relative_04.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 maths_relative_04.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe maths_relative_04.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 maths_relative_04.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe maths_relative_04.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 maths_relative_04.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe maths_relative_04.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 maths_relative_04.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe maths_relative_04.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco maths_relative_04.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe maths_relative_04.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 maths_relative_04.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe maths_relative_04.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 maths_relative_04.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe maths_relative_04.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 MATHEMATIC ROUTINES CHECKING SIGN / UNSIGN CONVERSION|open an issue]] for this example on GitHub. Thank you!===== POWERED BY =====

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