archive.worldofdragon.org

For those of you not on Facebook (or for those that haven't 'liked' the "TRS-80 / Color Computer" page there), you might not be aware of my recent CoCo developments... I have recently released "Follow Me", a clone of the 80's-era 'Simon' game targeted at the Tandy Color Computer. The game can be co...

The .zip archive is corrupt.

I only know another person who has this machine and it have keyboard problems. Is there any chance of getting a ROM dump from that machine (temporarily put the EPROM chip in your MX1600) so we can check to make sure that the ROM code from yours has not been hacked and rewritten to the EPROM by a th...

Here are the Color BASIC and EXTENDED BASIC ROM dump. The MEM function has been hacked to display 57383 BASIC bytes free at power-up, even though the top of memory available to BASIC is set to $7FFE as normal. :lol: Someone has put a JUMP at $B4F0 to a slightly modified version of the MEM function ...

Hello, Last week I aquired another rare brazilian coco clone, the Dynacom MX-1600: Here are the Color BASIC and EXTENDED BASIC ROM dump. Thanks Daniel! 8-) You mean that it can freeze any running program with a flick of a switch? wonder if a Dragon can be modified to do the same... All you need to ...

Good to see you got it working again!

There are some HM4864P 64K RAM chips for sale at only 0.99p each (+
£1.00 postage) if you are interested in the easy upgrade to 64K of RAM.

That clears up a lot. My Coco 2 was a late model Coco 2 (it has lowercase capable VDG). It sounds like it manifests this short lived modification Those late model CoCo 2's always come with Color BASIC 1.3 fitted as standard. Color BASIC 1.3 is almost identical to 1.2. The only slight difference is ...

Yes, there's a version of Pipe Frenzy on the JGGAMES5.DSK. However, it is still a bit of a work in progress. There are several problems with game play and compatibility across all the Coco models that I'm working on. See my blog for updates. I'll be releasing a new version of it soon. Blog: http://...

The truth is that Tandy modified the keyboard routine slightly for v1.2, and added the following extra code at the start. This was done in an attempt to speed-up BASIC when no keyboard input was required. They quickly realised that this caused problems for existing BASIC software that read the keybo...

Does anyone know where I can download the data sheet for Motorola's MCM4164B 64K x 1 Bit Dynamic RAM chips?