[PiDP-1]

There was an overrun issue in high speed channels. If you have my branch checked out and you updated

It seems to be OK. Mine is running on a pi5, but I do occasionally test on a pi4 and don't

Support for the Type 340 character sets added to the am1 assembler via a new 'type340 "xxx

Thanks for the praise! To everyone else, I need feedback! Even if you aren't going to run this,

This covers my implementation. I'm including a pdf of it just because I think it's such a

Sorry, but I broke display in my earlier update, it's fixed. More cross-platform gcc diffs. On

Nice Computerphile episode B is the forerunner to C - but seemed lost - Angelo Papenhoff decided to

It is an amazing device. And yes, the manual says 'slave'. It's perfectly appropriate in

Thanks on all fronts, Bill. Yes, FWIW, the EXTEND light came on - as it does with the working Bach

ALL of the low-level display code that was intertwined with the emulator main loop is now gone. It

Ok, doesn't look like much: But under the covers, it's pretty cool. It's being drawn with

I think, Lars Brinkoff may know more about the 340, but probably mostly as related to PDP-6 and its

Ok, finally found the correct file, git was not being cooperative. I've merged the fix,

Thanks John, Downloaded it this morning. It's a great tutorial. Carlo On Sunday, 12 April 2026 at

Right - thanks much for the reminder! But in my case, the problems were: 1) instead of using the

Perhaps a thread to collect PiDP-1 stuff in the media? To start: Some time ago i was interviewed (in

Some updates. nothing for the pdp1 yet i'm afraid, but i've finally pushed some stuff: * put

For me, just running stuff. At this point mostly with the HDMI turned off as there's no need

Thanks much for this - it was a helpful start towards solving a similar problem with my build. Based

I was just sorting through the leftovers from my #248 rack build - lots of spare parts, along with

It never occurred to me to check for the lightpen being used. I still don't know why there is

Thank you for your response. After posting my original message I did some further digging and

Since no one volunteered to figure out the rim loader kalah uses, it dawned on me that the pidp-1

As a result of discussions with Mike G, am1 now enforces some memory checks. These are fairly easy

You are correct, m1 doesn't check a lot of things. Funny you should mention that though, I was

Snowflake_sa-100.bin definitely uses it, but it works fine without it. I don't recall coming

I've also, knock on wood, never killed a switch in all of my projects. Now, I've had bad

In here: https://bitsavers.org/bits/DEC/pdp1/papertapeImages/20040127/tray1/

woah that does sound very relevant! would love to know more On Friday, March 20, 2026 at 12:31:59 PM

I am very tempted to put the 340 at some point as well. my pdp-6 implementation is working well: