I also found three copies of that file on my clone of your website. They are all different sizes:
I have attached all three to this message.
The directory path is : SoMuchStuff\trunk\pdp8\shadb\src\dec\dec-08-aj4\
I hope this helps.
The RP2040 is a dual core 133MHz Coretex M0+, 264K of RAM with 8 separate PIO processors for under a dollar in small quantities.
You could use the 1 PIO processor to handle the Terminal keyboard signaling and one to handle the PS/2 signaling and the CPU to do all sorts of translations and...
Have you tried running the extended memory maindecs on it?
The following is copied from https://www.bernhard-baehr.de/pdp8e/MAINDECs.html
KM8-E Memory Extension
MAINDEC-8E-D1BB-PB KM8-E 4K Extended Memory Checkerboard (Binary)
MAINDEC-8E-D1BB-D KM8-E 4K Extended Memory Checkerboard...
I have just acquired a DEC H758-a power supply.
The plus and minus 15VDC supplies seem to be fine but the +5VDC supply is not working (0.2VDC).
Does anyone have a schematic of this supply? I couldn't find it with a google search.
Also, what is the best way to clean it. The inside is filthy...
Full schematics are available for the Plessey RK05 controller as well. I can forward them to anyone interested.
I have two sets of the boards and neither one is working right now.
One set passes the drive less test but fails the read/write test and the other one fails the Drive Less test...
Most 3D printers with special (read harder material) extruder nozzles can print filament infused with carbon fiber. I have seen PLA, PETG, ABS and ASA filament with carbon fiber in it.
Many companies sell hardened or ruby nozzles.
That might be as strong as pure carbon fiber but I don't think...
I recommend the following two books on digital design. They both feature building a PDP-8 computer from logic.
The Art of Digital Design - An Introduction to Top-Down Design - Franklin P. Prosser & David E. Winkel (ISBN 0-13-046780-4)
The PDP-8 Class Project or Resoling An Old Machine - Tom...
I am a PDP-8 guy and I got my images from the RX02 emulator and I created the rest myself from Serial Disk mounted RK05 Images and my RX02 on my PDP-8.
I have used the grease weazle to create bootable RX01 and RX02 diskettes from images. RX02 omages are 512,512 bytes and RX01 images are...