Adding a Hard Drive to an Original IBM PC Using a Raspberry Pi

Fred Cisin cisin at
Mon Aug 10 11:43:02 CDT 2015

On Mon, 10 Aug 2015, Chris Osborn wrote:
> One of my favorite old computers to tinker with is a rev B IBM PC. I 
> recently moved it out into my living room to hopefully inspire me to 
> mess with it more, but I still didn’t want to mess with having to put 
> everything on 360k floppies. With all the slots occupied I had to find 
> another solution for mass storage. Raspberry Pi to the rescue! I was 
> able to use XTIDE and a Pi to emulate a hard drive over the RS232 port. 
> All the details are here on my blog post:

Nice job.
But, why give up an entire ISA slot just to hold a DB25 and a DA15 
connector?   You coulda made up a Compact Flash or SD card pseudo 
hard-drive that ALSO has a DE9 and DA15 connector on its bracket.

BTW, the original 5150 also had an empty ROM socket.

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