sam/z80uPC - Microcomputer based on the Z80 processor

	Commit message (Collapse)	Author	Age	Files	Lines
*	add port interface header, api still to implement	Nao Pross	2017-06-10	1	-5/+22
\| \| \| \| \| \|	fix for bug in usart.c, in function usart_write() that checked the trasmission_empty register at the wrong time causing it to overwrite the buffer.
*	add serial interface and a few std library functions	Nao Pross	2017-06-02	1	-0/+18
	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