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Excellent! Thank You.

Excellent! Thank You.

This is what it looks like on the US CoCo 1/2 using artifact colours.

Draconian - CoCo

If you need a replacement processor for your Dragon or CoCo, try the following links. All of them are a suitable replacement for the Dragon's Motorola MC6809EP. MC6809EP (1.0MHz) http://www.ebay.co.uk/itm/MC6809EP-/260992121246?_trksid=p3286.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D3%26po%3DLVI%2...

1982dragon1982 wrote: Is there a sound problem, the game sounds like a machine gun firing constantly or was this in the game?

That's the bug. Click on the link below for more info.

viewtopic.php?f=5&t=262

I posted bug fix releases of Cuthbert Goes Digging and Cuthbert in the Jungle on the 9th of January, 2011.

viewtopic.php?f=7&t=362

viewtopic.php?f=7&t=361

I'm looking for a copy of the William Tell Overture Music Demo (1982) by Garry and Linda Howard. I had a copy of this on floppy disk, but the disk has been damaged and is now useless. Can anyone help? William Tell Overture on YouTube by VironCybernet. http://www.youtube.com/watch?v=0_OW5CkqFvQ Regar...

OK, I did the 64K upgrade today and its working fine. The decoder mod wasn't needed. All three of my CoCo's now have 64K of RAM fitted. Thanks for taking the time to help me with this.

Regards,
Steve

The Dragon/CoCo IRQ can be enabled or disabled from within a BASIC program as follows: Disable IRQ = POKE65283,PEEK(65283)AND254 Enable IRQ = POKE65283,PEEK(65283)OR1 Enable IRQ = SOUND1,1 etc The IRQ is used by the BASIC interpreter's PLAY, SOUND, and TIMER routines. Any attempt to use the PLAY com...

No, only the 50Hz (PAL) or 60Hz (NTSC) IRQ interrupt.