Show HN: VAX/VMS 5.5 now runs in browser

Posted by baron3dl on Friday July 31, 2026 @11:16AM
from the show-hn dept.

http://vax.3dl.network/machines/dec/vax/ka655/

( 4 comments | 3 points | on HN )

Re:Show HN: VAX/VMS 5.5 now runs in browser by baron3dl on Friday July 31, 2026 @11:16AM (#49124203)

When PCjs hit the front page a couple weeks back I noticed VAX was conspicuously missing and couldn't resist seeing VMS run in a web browser. Claude Code running Opus 5 meticulously ported the KA655 from SIMH to PCjs.

It boots up to OpenVMS 7.3. I demo with 5.5 because its 1/10 the size and hits the nostalgia even harder.

[ Parent | on HN ]

Re:Show HN: VAX/VMS 5.5 now runs in browser by alexkowalenko on Saturday August 01, 2026 @04:46AM (#49132448)

I wanted to look at the source code, it's not checked into the repo.

[ Parent | on HN ]

Re:Show HN: VAX/VMS 5.5 now runs in browser by baron3dl on Saturday August 01, 2026 @03:05PM (#49137366)

Upstream hasn't replied to the issue I opened about how they want to take the fork back in. There are 3 open PRs. Seems like maybe he's not paying attention to it. Anyway, the code is all here in my fork: https://github.com/baron-3dl/pcjs/tree/master/machines/dec/v...

[ Parent | on HN ]

Re:Show HN: VAX/VMS 5.5 now runs in browser by mikewarot on Saturday August 01, 2026 @03:33PM (#49137638)

That's way cool, but it won't take an enter from my phone as a carriage return. I'll try it from home later.

[ Parent | on HN ]