New iPhone app hopefully useful to PiDP users..

John Kennedy

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Mar 18, 2026, 10:35:39 AMMar 18

to [PiDP-1]

I updated my DEC Opcodes app to include a simple assembler, so you can enter PDP-1 mnemonics and see the octal codes to tap in. I'd tried to add some sample code too, although it could do with a lot more!

Anyway, it's a free app so please try it out. If you like it, please leave a review or it will never be discovered: the App Store is bad for searching these days.

https://apps.apple.com/us/app/dec-opcodes/id6760246055

Bill E

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Mar 18, 2026, 1:43:54 PMMar 18

to [PiDP-1]

Sweet! All my machines in one place. Wish it worked on iPads, bigger screen. Also, add the PDP-1D instructions, I use them all the time. Some of the common IOTS would be nice.

But, just nit-picking, nice app! I'll keep it installed.

Bill

John Kennedy

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Mar 18, 2026, 1:50:33 PMMar 18

to [PiDP-1]

It should work fine on the iPad, and on Apple Silicon Macs too :-)

I will research the PDP-1D instructions, and IOTs. Would they be classified as "extensions" or..?

-John

Bill E

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Mar 18, 2026, 1:56:48 PMMar 18

to [PiDP-1]

It's not showing up in the app store if I look from my iPad, iPad OS 26.3.1, but does from my iPhone.

Bill

Bill E

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Mar 18, 2026, 1:59:42 PMMar 18

to [PiDP-1]

Never mind, operator error and the poor user intf in the app store. I found it, works fine on the iPad. Life is good.

Bill

Whit Turner

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Mar 19, 2026, 10:39:50 AMMar 19

to Bill E, [PiDP-1]

Just downloaded to my iPhone. Brilliant! Thanks for this.

Whit

On Wed, Mar 18, 2026 at 1:59 PM Bill E <wjegr...@gmail.com> wrote:

Never mind, operator error and the poor user intf in the app store. I found it, works fine on the iPad. Life is good.
Bill

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Angelo Papenhoff/aap

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Mar 19, 2026, 11:55:41 AMMar 19

to [PiDP-1]

Haha this is a lovely idea. no iphone to test, but looks cool.

John Kennedy

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Mar 19, 2026, 2:55:25 PMMar 19

to [PiDP-1]

I've updated it and hopefully the missing PDP-10 and PDP-1 opcodes are there.

Next project is to think about making it work on Android? Porting to Windows is simpler believe it or not - but useful? (it already runs on Mac)

Matthias Barthel

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Mar 19, 2026, 5:37:37 PMMar 19

to John Kennedy, [PiDP-1]

Yes please port this app to android 🙏 the looks very interessting.

Best matthias

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Paul Birkel

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Mar 20, 2026, 6:38:20 AMMar 20

to [PiDP-1]

Yes please port this app to MS WIndows ;-}. 🙏

Bill E

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Mar 20, 2026, 7:15:42 AMMar 20

to [PiDP-1]

I second that. I use Win (yes, I know, but there are reasons...) to VNC to my Linux dev box and the pidp-1, would be convenient to have this on the win side.

Bill

John Kennedy

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Mar 26, 2026, 3:07:51 PMMar 26

to [PiDP-1]

The latest version of the app now includes a tutorial on PDP-1 assembly language. If it seems ok, I'll expand to PDP-8.

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