archive.worldofdragon.org

Hi,

I'm trying to get this dragon back to working glory and I've traced the fault to chip IC18. Is this the basic rom chip? Can I just download the basic file from xroar and program it onto a 27C128 with an adapter to emulate 2532 ?

Turns out touching the crystal to get it to boot wasn't a clue but it did allow me to test the keyboard. I could only get key h,x,8,0 to work so this was a big clue. Traced the fault to the PIA 6821 IC26. Removed it and socketed then tested in a working machine and got the same fault, no boot up and...

Latest update to this issue is that I ended up not socketing and replacing the Ram as I thought I would first try socketing the right most ROM chip as some have said it is a major cause of such symptoms but that didn't help and the ROM was fine. I did however have a major breakthrough with getting t...

Hi, I have a D32 which just displays a blank green screen. I've checked the +-5, 12 voltages which are all ok on the ram ,cpu, sam and various other places so I think the voltages are ok. I've also swapped all the socketed chips into a working dragon and they all work ok. Anyone got any ideas or tro...

Hi,
Is the DragonMMC still available for sale?
Regards
Tom