First time I'm hearing about it. According to Wikipedia the show is well loved but just didn't get much viewership.
https://en.wikipedia.org/wiki/Halt_and_Catch_Fire_(TV_series...
My only comment about it is the first handful of episodes are the weakest. After the first half of the first season they tone down the Joe MacMillan character to be less of a kind of over the top trope anti-hero and more of a real character with depth and things get better. They're not bad early on, but you'd probably notice that and it's worth watching anyway.
Whether is was intentional or not, I think the way Joe moves into a more "believable" role worked well from a character development standpoint. Like, the cookie-cutter sales person isn't going to fly in SV (or Texas), and he was fooling himself anyway.
I grew up in the 80s and this show brought back some memories and filled in some gaps. I'd definitely recommend the first series.
At first, "What matters?" was a question the show's creators themselves couldn't answer. When Cantwell and Chris Rogers wrote the pilot for Halt and Catch Fire, they had little in mind but jumping on board one of the shows they already liked. "We're both in our early 30s, so the shows that made us wanna do this were the great 'difficult men' shows: The Sopranos, Breaking Bad, The Wire," Rogers says. "We wrote the pilot in a way that was set up to ape them: Joe McMillan is a traditional antihero, and the world is organized around him in that way." But when the pilot was bought by AMC for production, rather than simply used as a staffing script to land "The Chrises" (as Halt's cast and crew universally call them) in a writers' room for a preexisting series, things changed. "As we got in there and started doing it, we had a writers' groove. We figured out what was our voice, as opposed to the voice that felt like it was emulating the shows we liked."
https://www.esquire.com/entertainment/tv/a47905/halt-and-cat...
In many ways it's the opposite of what I feel like happens to most shows where they have extensively planned and worked on their first season because it's a multi-year effort in the making and then when they get renewed (if they get renewed) they have to figure out where to take it in a fraction of a time that they'd never really planned for.
In addition, I see Mad Men's episode "The Monolith", about a computer being installed in the office, as a comment on the (at that point) upcoming Halt and Catch Fire series.
And w/r/t accuracy, I dont mean technical accuracy but rather the characters types, the ups-and-downs of startups, the failures, etc.