sam/z80uPC - Microcomputer based on the Z80 processor

	Commit message (Collapse)	Author	Files	Lines
2017-06-02	add serial interface and a few std library functions	Nao Pross	1	-85/+0
	changes in usart: - new functions to setup the serial comunication settings such as baudrate, parity and stop bits - init function with most common values - transmit and receive functions each with a wrapper to send data blocks changes in libc: - new file stdio.c with basic implementation of putch, printf still a prototype - new file string.c with memcpy() function
2017-05-02	add serial device struct	Nao Pross	1	-0/+85
	other changes: - change from main() to kmain() in crt0.s and kernel.c - new file devices.h to define all address locations for devices - new data type - register_t as volatile uint8_t for registers in devices - size_t from libc