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ZX Spectrum Koch (Lévy C) Curve 1 Aug 2013 | 11:24 pm
A few years ago I submitted a couple of type-in programs (C-Curve and Curtains) to Your Sinclair and they featured in the penultimate issue (August 1993). Encouraged by a shiny new YS badge I sent of...
Silicon Dreams & The Vintage Computer Festival 5 Jul 2013 | 04:56 am
This weekend the biggest event in the U.K.'s retro computing calendar will be hosted at the Snibston Discovery Museum in Leicestershire. The Vintage Computer Festival follows 2010's highly successful ...
Programming Editors for Android on the Nexus 7 19 Sep 2012 | 03:14 am
A few days ago I received a Nexus 7 for programming on the go. The Nexus features a 1.3 GHz quad-core CPU, 1 GB RAM and runs Android 4.1 (Jelly Bean). The Nexus is supplied without a text editor so I...
Itsy: Documenting the Bit-Twiddling & Voodoo Magic 5 Sep 2012 | 05:34 am
Over the last few months I've been developing Itsy, a tiny interpreter for a subset of Forth. An overview can be found in the following posts: Itsy-Forth: the Outer Interpreter of a 1K Tiny Compiler ...
Mouse: a Language for Microcomputers by Peter Grogono 24 Aug 2012 | 01:35 am
Mouse is a stack-based interpreted programming language descended from MUSYS, an earlier language for a DEC PDP/8 with 4096 words of memory. In Mouse: a Language for Microcomputers, Grogono defines t...
Itsy Forth: The Compiler 24 Jun 2012 | 04:55 am
Itsy Forth is a 1kB subset of the Forth programming language. Itsy was developed top-down, implementing only the functions required to get the compiler up and running. So far we've looked at the follo...
Itsy Forth: Implementing the Primitives 16 Apr 2012 | 07:37 am
Itsy Forth is a tiny subset of the Forth programming language. So far we've looked at the Forth outer interpreter, inner interpreter and dictionary. This time we'll define the words required to comple...
Itsy-Forth: the Dictionary and Inner Interpreter 4 Apr 2012 | 09:47 am
Itsy Forth is a minimal Forth compiler implemented in under 1kB. Earlier we examined Itsy's outer interpreter. Now we take a closer look at the dictionary and inner interpreter. Forth Dictionary Its...
Itsy-Forth: the Outer Interpreter of a 1K Tiny Compiler 14 Mar 2012 | 11:09 pm
Itsy Forth is a tiny indirect-threaded compiler for a subset of the Forth programming language. The compiler contains an interactive interpreter which allows the programmer to define new words (subrou...
Microcontroller / EPROM Macro Photos 1 Feb 2012 | 06:49 am
A couple of the dev boards I've been experimenting with have a fused quartz window leaving the chip visible, offering the perfect opportunity to take a few close up photos. The 87C752-5F28 is a Harva...
