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TomHarte
CP-M-for-OS-X
Objective-C2018–2021
TomHarte / CP-M-for-OS-X

CP-M-for-OS-X

A z80 emulator + CP/M-80 reimplementation that intends to allow original CP/M software to be used under OS X.

3Distinct people
3Mentions
1Explicit recommenders
240GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

A z80 emulator + CP/M-80 reimplementation that intends to allow original CP/M software to be used under OS X.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

I love Z80 and 6809 machines. The first computer game I ever played was Zork on a Z80. I keep trying to buy an old Z80 machine on fleaBay, but the prices either start out of a…

reaperducer used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year3 dated mentions

Observed mentions: 2018-09-01 21:33:01 UTC to 2021-05-13 00:13:38 UTC.

0122018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20182019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2021

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC101
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC000
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC211

What Hacker News says

3 sources
reaperducer·Sep 1, 2018Recommendation phrase
I love Z80 and 6809 machines. The first computer game I ever played was Zork on a Z80. I keep trying to buy an old Z80 machine on fleaBay, but the prices either start out of a reasonable range, or I get outbid. It's great to see so many people these days rediscovering the chip and making these modernized designs. Disk I/O was such an unreliable pain back then. It's fantastic that most of these are designed for CF and SD storage now. Every time I run across a project like this on the internet, I eat it up. And thankfully, they are becoming more common. If I had younger eyesight, and steadier hands, I'd be all over this project. (Anyone know of a company that sells something like this I can hook up to a dumb terminal? No FPGAs, or RPis, please.) I met a woman just this past week who used to sell S-100 and Z80 machines at BusinessLand
Read the rest
in Silicon Valley back when everything was just starting to percolate. We talked for hours about the experience and the people she met what the valley was like back in those days. (Like getting to try out an Alto in the 70's!) The next time I run into her I'm going to encourage her to write all of that down and post it somewhere. [Edit to add:] If you want an excellent CP/M experience on a modern Mac, there's Tom Harte's emulator.† Unfortunately, I haven't been able to play the full Zork on it because Zork requires multiple disks, and I don't think it has a mechanism to switch virtual disks. † https://github.com/TomHarte/CP-M-for-OS-X
In Z80 computer wirewrapped on perfboard

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