Why is my TI-99/4A in Black and White? 29 Mar 2013 | 06:50 am

by James Abbatiello My first computer was a Texas Instruments TI-99/4A. Longtime readers may remember a previous article where we implemented TI-99/4A BASIC as a Scripting Language for modern computer...

Clockslide: How to waste an exact number of clock cycles on the 6502 7 Feb 2012 | 03:29 pm

by Sven Oliver ‘SvOlli’ Moll; the original German language version has been simultaneously posted on his blog. This is an article about the 6502 processor about the topic: how to “waste” a number of ...

Assembly Evolution Part 1: Accessing Memory and the strange case of the Intel 4004 14 Oct 2011 | 09:58 am

by Julien Oster, reprinted with permission. While it has become far less relevant for non-system developers to write assembly than it was a few decades ago, by now CPUs have nevertheless made it much...

The story of 15 Second Copy for the C-64 18 Jul 2011 | 09:00 pm

by Mike Pall, published with permission. [This is a follow-up to Thomas Tempelmann's Story of FCopy for the C-64.] Ok, I have to make a confession … more than 25 years late: I’ve reverse-engineered...

The story of FCopy for the C-64 16 Jul 2011 | 11:13 am

by Thomas Tempelmann, reprinted with permission. Back in the 80s, the Commodore C-64 had an intelligent floppy drive, the 1541, i.e. an external unit that had its own CPU and everything. The C-64 wo...

Chaosradio Express #177: Commodore 64 5 Jul 2011 | 09:00 pm

(This article is about a German-language podcast episode on the C64.) Im Februar hat mich Tim Pritlove auf der Durchreise in Frankfurt abgefangen, wo ich mit einem Koffer voll mit zwölf Commodore 64 ...

Inside Commodore DOS [PDF] 28 Jun 2011 | 09:00 pm

Richard Immers and Gerald G. Neufeld: Inside Commodore DOS : the complete guide to the 1541 disk operating system. Northridge, Calif. : Datamost, 1985. ISBN 0-8359-3091-2 (512 pages, 7.4 MB PDF) In m...

Racism in Monstropolis 21 Jun 2011 | 09:00 pm

Sometimes, freezeframe fun does not provide fun, but sadness. In the Pixar movie Monsters Inc., you can see the following file of a child at 12 min 40 sec: Monsters scare children at night, and this...

Gate A20 14 Jun 2011 | 09:00 pm

Commodore 128 Programmer’s Reference Guide (PDF) 7 Jun 2011 | 09:00 pm

Commodore Business Machines. Commodore 128 Programmer’s Reference Guide. New York, NY: Bantam Books, 1986. ISBN 0-553-34378-5 (756 pages, 24.6 MB PDF) This book is an indispensable reference guide an...