Search found 1474 matches

by zephyr
Wed May 23, 2012 2:58 am
Forum: Uploads
Topic: Audio Spectrum Analyzer by Steve Bjork
Replies: 3
Views: 2440

Re: Audio Spectrum Analyzer by Steve Bjork

Thanks Sarah! :) Here's a greatly improved version which is now compatible with Tandy Color Computer 1,2,3 and Dragon 32/64 machines. This version also fixes a couple of bugs which I previously missed. EDIT: Archive updated 12:54 pm . Made some speed optimizations to the main loop, and made a few mi...
by zephyr
Tue May 22, 2012 2:35 pm
Forum: Dragon General
Topic: A fun demo for the Dragon?
Replies: 16
Views: 15163

Re: A fun demo for the Dragon?

(apologies if this has been asked before) Well, my Dragon 64 is now sitting in the corner of the office, all wired up and nothing to do. I'd love it to be running some sort demo that makes people go "ooh, what's that?" when they come to see me. Perhaps something 3D and spinning, or pretty swirly co...
by zephyr
Tue May 22, 2012 2:30 pm
Forum: Uploads
Topic: Audio Spectrum Analyzer by Steve Bjork
Replies: 3
Views: 2440

Audio Spectrum Analyzer by Steve Bjork

This is a copy of Steve Bjork's Audio Spectrum Analyzer, published by the Tandy Corporation (Datasoft). I have converted it from the original Tandy CoCo compatible cartridge to a Dragon 32/64 compatible cassette version. The Audio Spectrum Analyzer allows you to play music through the Dragon cassett...
by zephyr
Mon May 21, 2012 8:59 pm
Forum: Dragon General
Topic: Atari 6502 upgraded to 6809
Replies: 1
Views: 2594

Re: Atari 6502 upgraded to 6809

Cloud-9 are selling those Liber809 boards. The 6809 is regarded by many (including Bill Gates) to be the best 8-bit processor ever. DA: Bill, when we left off yesterday, we were talking about the PC, the IBM PC, as beginning a new era in the history of the personal computer. Why is that so? BG: Mic...
by zephyr
Mon May 21, 2012 6:14 pm
Forum: Uploads
Topic: Demon Attack by Imagic
Replies: 0
Views: 1437

Demon Attack by Imagic

Demon Attack is a video game published by Imagic for several home computer systems. Marooned on the ice planet Krybor, the player uses a laser cannon to destroy legions of demons that attack from above. Visually, the demons appear in waves similar to other space-themed shooters, but individually com...
by zephyr
Sun May 20, 2012 9:03 pm
Forum: Uploads
Topic: "Pixie!"
Replies: 18
Views: 10829

Re: "Pixie!"

Here is another Dragon 32/64 compatible version. This version loads (and EXECs) a small machine code routine from disk. The routine works by detecting the changes to the USR code in the D64 ROM, copies ROM to RAM, patches the ROM-in-RAM with the old D32 USR code, adds some extra code at $00F9-$00FF,...
by zephyr
Sun May 20, 2012 3:10 pm
Forum: Uploads
Topic: "Pixie!"
Replies: 18
Views: 10829

Re: "Pixie!"

One final word of warning. Due to the tight (to say the least) memory available on a Dragon 32, I remember eventually facing some "?OM" issues after working with the software for a while. The Basic code was made as compact as possible, and stack allocation was tight, too. Yet 32 KB are still 32 KB,...
by zephyr
Sun May 20, 2012 2:41 pm
Forum: Uploads
Topic: "Pixie!"
Replies: 18
Views: 10829

Re: "Pixie!"

How is it possible to use disks in "64" mode?! Because all the loading/saving is done from/to disk. If the Dragon 64 only handles tapes, then there will be another I/O issue... It doesn't use "64 mode". The last lines in "PIXIE.SYS" use "ERL=18000" statements to make sure the error was actually ins...
by zephyr
Sun May 20, 2012 2:16 pm
Forum: Uploads
Topic: "Pixie!"
Replies: 18
Views: 10829

Re: "Pixie!"

Thanks, Steve! But this is raising a couple of extra issue... The last lines in "PIXIE.SYS" use "ERL=18000" statements to make sure the error was actually inside the program. Line 18000 has become line 74 in your update: This would have to be corrected, too! How is it possible to use disks in "64" ...