RS232 flow-control & handshaking – Psion MC400 retro communications

Connecting my retro-laptop to the internet via 2 x RS232 serial connections to a Raspberry Pi… and defeated (for now) by lack of hardware flow-control signals 😦

MCMF – MF4 dialling for the Psion MC400

Back in the early 1990s I was a serious Psion-a-holic. If there was such a thing as “Psionaholics Anonymous” I would’ve been there. My first machine was the ground-breaking Series 3 and I was instantly hooked. After that I owned a Series 3a, Siena, Series 5 and later a Revo. These machines had soul. IContinue reading “MCMF – MF4 dialling for the Psion MC400”