Welcome to decuser's blog
Topics on this blog include computing, retro-computing, operating systems, math, and whatever other technical subjects I happen to be exploring that I find interesting enough to take and share notes about.
Posts
-
retro-computing pal-1
PAL-1 Loading MOS Paper Tape to RAM
This post describes how to get your Mac talking to your PAL-1 in order to send MOS papertape format ascii files via minicom to your PAL-1 and run them. Future installments will go into more detail, from the ground up.
-
retro-computing pal-1
PAL-1 Entering a Program via Serial Port
Note describing a minimalist example of how to input via serial and run a program on the PAL-1.
-
retro-computing pal-1
PAL-1 Entering a Program at the Keypad
Note describing a minimalist example of how to input and run a program on the PAL-1.
-
retro-computing pal-1
PAL-1 Resources A Curated List
This is my curated list of resources. The manuals, books, videos, and sites referenced below are ones that I found useful and interesting, and occasionally enlightening. This is not an exhaustive list.
-
retro-computing pal-1
PAL-1 Getting Started
This is a note on how to get and get started using a PAL-1. The PAL-1 is a replica of the KIM-1, an old-school 6502 trainer, from back in the day.
-
unix research-unix v6
Updated and expanded Lions V6 source v1.4
This is revision 1.4 of my updated and expanded edition of John Lions’ UNIX Operating System Source Code Level Six. It preserves Lions’ original source selection, organization, source-sheet numbering, and line references while reformatting the booklet for letter-size printing.
This edition also adds a table of contents, an alphabetical source-file listing, the locations of the files in a running V6 system, alphabetical procedure listings, file-and-procedure indexes, defined-symbol listings, source-code cross-references, and alphabetical and numerical symbol tables for the configured kernel.
-
retro-computing pal-1
PAL-1 A KIM-1 replica
A post about my very own working PAL-1. It's definitely up and running.
-
unix research-unix v6
Tweaked version of Lions for Printing and Viewing
Superseded: A later and more complete version is available as Updated and expanded Lions V6 source, revision 1.4.
This was an early reformatted edition of John Lions’ UNIX Operating System Source Code Level Six, prepared for easier printing and viewing. It included the V6 source listing, a table of contents, an alphabetical file listing, and the locations of the corresponding files in a running V6 system.
-
unix research-unix v7
Installing and Using Research Unix Version 7 in the SIMH PDP-11/45 and 11/70 Emulators 2.1
It covers building a working v7 instance from tape files that will run on the SimH emulator. First, the reader will be led through the restoration of a pristine v7 instance from tape to disk. Next, the reader will be led through adding a regular user, making the system multi-user capable. Then, the reader will be shown how to make the system multi-session cable allowing multiple simultaneous sessions. Finally, the system will be put to use with hello world, DMR style, and the learn system will be enabled.
-
unix research-unix v7
Enabling the DZ in v7
A short note about installing and using the DZ-11 Terminal Multiplexor in v7 for access from telnet on a host.