550W Document
550W, a high-end OS
io.h
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1 #pragma once
2 
3 // enter a char into serial port
4 // use sbi printch function
5 void k_port_write_ch(char ch);
6 
7 // enter a message into seraial port
8 // use sbi printstr function
9 void k_port_write(char *buf);
10 long k_port_read();
void k_port_write(char *buf)
Definition: io.c:10
void k_port_write_ch(char ch)
Definition: io.c:6
long k_port_read()
Definition: io.c:14
Definition: virtio.h:78