archive.worldofdragon.org

There is a copy of the original DragonDOS manual (Introduction to Dragon DOS) in the "Dragon Downloads" section of the archive.

http://archive.worldofdragon.org/archive/index.php

And theoretically, if S were pointing into ROM, the push and pull instructions could trigger it too, but that's not terribly useful... Unless you wanted to do a super-fast ROM to RAM copy. :) 10 ORG $5000 20 ORCC #$50 30 STS <$76 40 LDA #$FF 50 TFR A,DP 60 STA <$D7 70 LDS #$8000 80 L1 STA <$DE 90 P...

And..... If we're going to be writing code that locks step with the screen anyway... You *can* use the 65497 'double speed' poke without causing any junk on the screen at all if you only enable it during the horizontal and vertical borders. Regarding the full double speed poke, I actually use that ...

Audacity 1.2.6 for making real audio cassette recordings from uploaded CoCo or Dragon games and programs in wave (.WAV) file format. This is an older version of Audacity for Windows 98/ME/2000/XP. I decided to upload a copy in case it ever becomes unavailable for download from the original site. Au...

Gareth_O'Flaherty wrote:Thanks for taking the time to do this. It's very much appreciated. It's great to see games still being ported to the Dragon.
Gareth.

Same here. Thanks, Jim.

The attached version includes a small loader program which loads the game from cassette at high-speed. The game now loads on a real Dragon 32/64 in just 71 seconds (original loading time was 2 minutes and 30 seconds). It has been tested without problems on a real Dragon 32 and under XROAR Dragon 32/...

The attached cassette version includes a small loader program which loads ENCODER at high-speed. It has been tested without problems on a real Dragon 32 and under XROAR Dragon 32/64 emulation.

There are two methods which can be used to load a program which has accidentally been saved to cassette while the computer is running in the address dependent (POKE65495,0) double speed mode. Method 1: This method will only work if you have a CoCo or Dragon which runs reliably in true (POKE65497,0) ...

Did you know that in the 65495 'semifast' poke, the CPU will actually execute *some* operations faster even though it's running in RAM? Semifast poke: It's because when the 6809 executes cycles that don't access memory, the address bus tri-states and is interpreted by the SAM as $FFFF (a ROM access...

More interesting information posted by John Linville in reply to the previous quote from Sock Master at the CoCo Forums . Semifast poke -- interesting! I'll have to give some thought to understanding that... Regarding the full double speed poke, I actually use that in Fahrfall to get the extra cycle...