cos2000v2/API.md

API List

APIs given by COS2000 libraries

LIBSYS

All fonctions in the "libsys" library.

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u32 exit(u32 resultcode);

Description:End a task for user or kernel domain

• syscall id : 5
• arguments : 1
• • argument 1 : u32 resultcode Code result of the execution
• results : u32
• dump of register cpu: no

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u32 getticks(void);

Description:Return the internal value of the timer

• syscall id : 4
• arguments : 0
• results : u32
• dump of register cpu: no

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u8 waitkey(void);

Description:Wait for user to press a key and return the ascii code pressed

• syscall id : 1
• arguments : 0
• results : u8
• dump of register cpu: no

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u32 testapi(u32 arg1, u32 arg2, u32 arg3);

Description:Simple function to test if SYSCALL API is correctly running

• syscall id : 0
• arguments : 3
• • argument 1 : u32 arg1 first argument of your choice
• • argument 2 : u32 arg2 second argument of your choice
• • argument 3 : u32 arg3 third argument of your choice
• results : u32
• dump of register cpu: yes

LIBVIDEO

All fonctions in the "libvideo" library.

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u32 print(u8* string);

Description:Show a string on the screen

• syscall id : 2
• arguments : 1
• • argument 1 : u8 string* string to show in ascii format
• results : u32
• dump of register cpu: no