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104 lines
3.4 KiB
ReStructuredText
104 lines
3.4 KiB
ReStructuredText
************************
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Compiler library modules
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************************
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The compiler provides several "built-in" library modules with useful subroutine and variables.
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Some of these may be specific for a certain compilation target, or work slightly different,
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but some effort is put into making them available across compilation targets.
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This means that as long as your program is only using the subroutines from these
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libraries and not using hardware- and/or system dependent code, and isn't hardcoding certain
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assumptions like the screen size, the exact same source program can
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be compiled for multiple different target platforms. Many of the example programs that come
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with Prog8 are written like this.
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You can ``%import`` and use these modules explicitly, but the compiler may also import one or more
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of these library modules automatically as required.
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.. caution::
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The resulting compiled binary program *only works on the target machine it was compiled for*.
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You must recompile the program for every target you want to run it on.
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syslib
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------
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The "system library" for your target machine. It contains many system-specific definitions such
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as ROM/kernal subroutine definitions, memory location constants, and utility subroutines.
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Many of these definitions overlap for the C64 and Commander X16 targets so it is still possible
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to write programs that work on both targets without modifications.
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conv
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----
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Routines to convert strings to numbers or vice versa.
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- numbers to strings, in various formats (binary, hex, decimal)
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- strings in decimal, hex and binary format into numbers
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textio (txt.*)
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--------------
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This will probably be the most used library module. It contains a whole lot of routines
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dealing with text-based input and output (to the screen). Such as
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- printing strings and numbers
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- reading text input from the user via the keyboard
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- filling or clearing the screen and colors
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- scrolling the text on the screen
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- placing individual characters on the screen
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diskio
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------
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Provides several routines that deal with disk drive I/O, such as:
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- show directory
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- display disk drive status
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- load and save data from and to the disk
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- delete and rename files on the disk
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floats
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------
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Provides definitions for the ROM/kernel subroutines and utility routines dealing with floating
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point variables. This includes ``print_f``, the routine used to print floating point numbers.
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graphics
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--------
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High-res monochrome bitmap graphics routines:
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- clearing the screen
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- drawing lines
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- drawing circles and discs (filled circles)
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- plotting individual pixels
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math
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----
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Low level math routines. You should not normally have to bother with this directly.
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The compiler needs it to implement most of the math operations in your programs.
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cx16logo
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--------
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A 'fun' module that contains the Commander X16 logo and that allows you
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to print it anywhere on the screen.
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c64colors
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---------
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Available for the CommanderX16 target, a module that contains a few better
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color palettes for how the colors of the VIC-II looked on the Commodore-64.
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There are subroutines to activate one of the several palettes of your liking.
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The Commander X16's default colors for this (the first 16 colors) are too saturated
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and are quite different than how a C-64 looked.
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prog8_lib
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---------
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Low level language support. You should not normally have to bother with this directly.
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The compiler needs it for verious built-in system routines.
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