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How to Get Started with CP/M by Carl Townsend is the best CP/M introductory book I've seen yet ... by a fair margin. Thom Hogan's CP/M User Guide is also good, but Townsend is somehow higher density while still being very approachable.

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@elb I got started with CP/M with my Kaypro 4 in 1983. Still have it but haven't plugged it in in ages. I'll open it up one of these days and refurbish the power supply.

@Ricardus My only native CP/M machine is an Osborne 1, but it's just such a fun machine. I'd like to have a Kaypro (probably a II or 10), but haven't secured one yet.

@elb I had a friend with an Osborne who used to call my BBS in the 80s. Also a friend with a Kaypro 10, who later hacked it into a Kaypro 40.

I have a Kaypro 2 also.

@profoundlynerdy Just a thing I do. I've been looking at OpenVMS VAX, PC-DOS 2.00, and CP/M within the past week. Booted two of the three on real hardware (didn't get out my CP/M machine), just read a book on the other.

@elb Gotcha. I sometimes fool around with disassembling game cartridges to semi-workable source. So, I understand the itch to play with interesting tech just to understand it.

I'm mostly a #C64 guy myself.

@profoundlynerdy I collect old hardware (mini and micro) and enjoy both trying to use it as it was once used and trying to plumb it into the "modern" world in some way.

I never had a C64 Back in the Day, although I'd like to have one, now. My 6502 equipment is all Apple II family.

@elb BTW, if you like CP/M, you might find #CollapseOS interesting. It's basically a post apocalyptic OS designed to run scavenged parts. The whole thing is written in #Forth.

I don't share the author's views about an emending civilization collapse, but I think it's an interesting project. Maybe it will allow some e-waste to be repurposed and we'll end up thanking him. Who knows.

collapseos.org/

@elb Is CP/M still being maintained, or is this a retrocomputing thing? Or both?

@n8chz as far as I know, there is no current development on CP/M except by retrocomputing hobbyists. The original Digital Research source code is readily available (some of it public domain, some open source, and some just available), and it is still ported to new retrocomputer builds, however.

As a commercial interest, it has not seen meaningful development since the mid 1980s, when CP/M-86 lost thoroughly to IBM (Microsoft) DOS on the PC.

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