IBM 5150 in S100?

Hi I don?t know if this helps. I worked in VDU design and development in the mid 1970's. The keyboards used a system with a 74150 and I think a '154. These are a 16 line binary to decimal decode and an eight line to binary encoder. The outputs of the one and the inputs of the other formed a matrix with the keys (switches) at the junctions. A counter drove the inputs of one and the selects of the other. As soon as you got an output the counter stopped and its value became the pressed key value. Regards ? Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Fred Cisin Sent: 29 March 2011 21:58 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: IBM 5150 in S100? The Steve Ciarcia "Micromint"? PC used a terminal as it's default console. Its BIOS and/or I/O drivers might help as a starting point. But, because a significant portion of their users actually wanted a "real" 5150, they came out with an ISA board for it with a 5150 style keyboard interface. Studying that might help with building an S100 imitation of the 5150 keyboard interface. -- Grumpy Ol' Fred cisin at xenosoft.com