JavaScript PDP11 emulator running Unix V6

#1

Post by sedachv » Tue, Apr 19, 2011, 8:57 PM UTC

JavaScript PDP11 emulator running Unix V6
pdp11.aiju.de

Re: JavaScript PDP11 emulator running Unix V6

#2

Post by enf » Tue, Apr 19, 2011, 11:41 PM UTC

Pretty amazing. My tips to anyone else trying this out:

* Remember that cd was spelled chdir in v6

* "stty -lcase" will make it stop putting everything in caps

Re: JavaScript PDP11 emulator running Unix V6

#3

Post by Maci » Wed, Apr 20, 2011, 12:29 AM UTC

enf wrote: post #2

Pretty amazing. My tips to anyone else trying this out: * Remember that cd was spelled chdir in v6 * "stty -lcase" will make it stop putting everything in caps

chdir usr

chdir games

wump

edit: fixed.

Re: JavaScript PDP11 emulator running Unix V6

#4

Post by [deleted] » Wed, Apr 20, 2011, 12:47 AM UTC

Maci wrote: post #3

enf wrote: post #2

Pretty amazing. My tips to anyone else trying this out: * Remember that cd was spelled chdir in v6 * "stty -lcase" will make it stop putting everything in caps

chdir usr chdir games wump edit: fixed.

[deleted]

Re: JavaScript PDP11 emulator running Unix V6

#5

Post by wtracy » Wed, Apr 20, 2011, 12:48 AM UTC

This emulator and this codebase need to get together: http://github.com/qrush/unix

Re: JavaScript PDP11 emulator running Unix V6

#6

Post by angusgr » Wed, Apr 20, 2011, 12:51 AM UTC

The source code is quite readable as well. pdp11.js has cases for stepping each instruction. 2Mb hard disk image loaded into an array via an ajax request (rk05.js)

Is it possible to benchmark this on a modern PC/browser, against a real PDP-11?

Re: JavaScript PDP11 emulator running Unix V6

#7

Post by dman » Wed, Apr 20, 2011, 1:03 AM UTC

Maci wrote: post #3

enf wrote: post #2

Pretty amazing. My tips to anyone else trying this out: * Remember that cd was spelled chdir in v6 * "stty -lcase" will make it stop putting everything in caps

chdir usr chdir games wump edit: fixed.

Just tried it - its wump and not wumpus - and at least in google chrome amd64 linux it segfaults.

Re: JavaScript PDP11 emulator running Unix V6

#8

Post by angusgr » Wed, Apr 20, 2011, 1:08 AM UTC

dman wrote: post #7

Maci wrote: post #3

Earlier quoted context omitted.

chdir usr chdir games wump edit: fixed.

Just tried it - its wump and not wumpus - and at least in google chrome amd64 linux it segfaults.

Strange, I'm on the same config as you and apart from 'wump' I was in nostalgia-wumpus heaven. :) Chrome 10.0.648.204 (amd64 linux.)

Re: JavaScript PDP11 emulator running Unix V6

#9

Post by st3fan » Wed, Apr 20, 2011, 1:10 AM UTC

Pretty awesome. I compiled HELLO.C. Took a minute, but it works.

Re: JavaScript PDP11 emulator running Unix V6

#10

Post by dman » Wed, Apr 20, 2011, 1:29 AM UTC

angusgr wrote: post #8

dman wrote: post #7

Earlier quoted context omitted.

Just tried it - its wump and not wumpus - and at least in google chrome amd64 linux it segfaults.

Strange, I'm on the same config as you and apart from 'wump' I was in nostalgia-wumpus heaven. :) Chrome 10.0.648.204 (amd64 linux.)

Sorry my bad. Its firefox4 :) Apparently I am still getting used to the firefox 4 UI where the tabs take up most of the screen.