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72 lines
1.6 KiB
Markdown
72 lines
1.6 KiB
Markdown
[< back to index](../index.md)
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Definitions on the following list are frequently provided by the default automatically-imported modules.
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However, as they are not the part of the standard library, they might not be available on all targets:
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#### `void putchar(byte char)`
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Prints a single character.
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Available for: all computer targets.
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#### `void new_line()`
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Moves the cursor to the next line.
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Available for: all computer targets.
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#### `pointer readline()`
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Reads a line from the console and returns a pointer to a null-terminated string.
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The string is valid only until next read from the console.
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Available for:
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ZX Spectrum,
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NEC PC-88,
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Commodore 64 with `c64_basic` module,
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Commodore 16 or Plus/4 with `c264_basic` module.
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#### `word readword()`
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Reads a 16-bit unsigned integer from the console.
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Available for:
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ZX Spectrum,
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NEC PC-88,
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Commodore 64 with `c64_basic` module,
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Commodore 16 or Plus/4 with `c264_basic` module.
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#### `void bell()`
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Beeps.
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Available for: Apple 2, ZX Spectrum.
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#### `void set_bg_color(byte color)`
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Sets the screen background color.
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Available for: C64, VIC-20, C64, C264 series.
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#### `void set_border(byte color)`
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Sets the screen border color.
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Available for: VIC-20, C64, C264 series, ZX Spectrum.
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#### `const byte black, white, red, green, blue, cyan, purple, yellow`
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Various colour constants.
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Available for: VIC-20, C64, C264 series, ZX Spectrum.
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#### `macro void memory_barrier()`
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Informs the optimizer that at this point arbitrary memory has been accessed and either read or written by an external device.
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The optimizer should not optimize any memory accesses across that macro.
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Available for: all targets.
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