The random ramblings of a French programmer living in Norway...
2020
  Keyboard handling (1)
Sat 22nd August 2020   
When people decide to make a game on the Oric, on of the first issue they stumble upon is how to deal with keyboard input.

There are many different ways, some are simple but only allow to check for one key at a time, while some other allow to test for multiple key presses.


  Dungeon Master intro
Wed 20th May 2020   
In 1996 I released a small prototype of what could be Dungeon Master on the Oric.

People being people, they kept bugging me about when I would finish it, so 24 years later I decided to take a look at it.

  Optimizing Buggy Boy (2)
Wed 13th May 2020   
Now that the final scroller is finally running at an acceptable speed, the second most pressing issue is the Mandelbrot fractal part.

Optimizing a scroller is just a matter of finding a fast way to copy things around, but optimizing a fractal is much more complicated due to the limitations of the 6502 processor regarding doing mathematics.

  Overlay Memory
Sun 10th May 2020   
A commonly misunderstood element of Oric computers is the actual memory layout and amount: Does the Oric has 48KB or RAM, as the Atmos label says, or 64KB as claims the Oric Nova 64?

The actual truth is somewhat in-between!

2018
  Optimizing Buggy Boy (1)
Thu 15th November 2018   
On the weekend of 2-3 November 2018 the Demosplash party was held at Carnegie Mellon University in Pittsburgh, PA, USA.

There are not many demo parties in the USA, and even less of these showing Oric demos running on the actual Oric hardware specially with a Cumulus device!

  Performance Profiling
Sun 11th November 2018   
A few weeks ago NekoNoNiaow asked on the Defence Force forums if there was any profiling tools available for Oric programs "aside from the reliable but quite basic OSDK clock() function".

I had already worked on the topic, but no actual official release came out of it: Time to fix that!

2015
  Preprocessor abuses
Sat 15th August 2015   
Here comes the first article about tips and tricks that can be used to make your Oric development easier and faster.

Choosing an assembler

Originally the Oric C development kit was using FRASM to assemble the 6502 code generated by the C compiler front-end.

One of the first changes we did when starting the OSDK was to use instead a real 6502 macro-assembler with an extended set of features, and ultimately we choose XA because it supported most of the C compiler preprocessor directives.