Ben Eater on RS232

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Hans Otten

Nov 19, 2022, 5:06:57 AM11/19/22
to PAL 6502 computer
The RS-232 protocol - YouTube 

Ben shows how to bitbang a RS232 input on his 6502 breadboard computer.

Well done explanation how RS232 works and how to do that with a simple input port on a 6502.
It is not identical but close to how the KIM-1/PAL-1 getch routine works. 
The KIM-1 is a bit more intelligent, since it adapts to the baud rate, Ben uses 9600 fixed in (half-) bit delay functions.

GN Liu

Dec 1, 2022, 8:53:34 PM12/1/22
to PAL 6502 computer
Thanks Hans for sharing. The demo code is educational.
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