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| author | Stefan Zabka <zabkaste@hu-berlin.de> | 2020-04-30 09:32:16 +0200 |
|---|---|---|
| committer | Stefan Zabka <zabkaste@hu-berlin.de> | 2020-04-30 09:32:16 +0200 |
| commit | 5b75cdd06f266d384491f51f0e92226b5e19ea3b (patch) | |
| tree | 8bacdfea38d3024eff1cc0307ff0f723578d7ad2 | |
| parent | 0b4be8417c4375ecd20b2aa1d53511403477a849 (diff) | |
| download | betriebssysteme-getc.tar.gz betriebssysteme-getc.zip | |
Added sourcesgetc
| -rw-r--r-- | 01_exercise/bootloader.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/01_exercise/bootloader.c b/01_exercise/bootloader.c index 403586b..1ba5786 100644 --- a/01_exercise/bootloader.c +++ b/01_exercise/bootloader.c @@ -5,6 +5,7 @@ asm(".code16gcc\njmp $0, $main"); char WRITE_CHARACTER_TTY = 0x0E; +// Syscall found here http://www.ctyme.com/intr/rb-0106.htm void put(char c) { short command = WRITE_CHARACTER_TTY << 8 | c; // volatile because there is no output, so the function might get optimized @@ -23,6 +24,7 @@ void print(char const *const str) { } } +// Syscall found here http://www.ctyme.com/intr/rb-1754.htm char getc() { char ret; asm("mov $0x00, %%ah;" |