archive.worldofdragon.org

Long time lurker here. If you look at the differences it looks like bit 3 is always low. It can't be the ROM if it's getting this far. Probably not RAM either. Maybe the VDG chip connection to the data bus? Try cleaning the MC6847 socket. "DRAGON" => "DRAGGN". G=O "BASIC" => "BA[AC". [=S and I=A "19...

You can use any Terminal software. I used Putty. Old versions of Windows had HyperTerm built in.
Baud=115200

It's a little unreliable as there is no handshaking. Fine for typing but if you paste a basic program it will have errors.

Remember I had to make my own from resistors
Not an expert but I think the 'dot' is pin 1.

Did you really buy 100? I only bought 30!

I'm glad it work the first time for you. I just order all the parts I need to build 4 of them. When I order the PCB Board I'm thinking of ordering at least 5 or maybe 10. I do own a XGecu TL866II Plus High-Performance Universal USB Programmer so I can Burn the Eprom. I wish I had the files "exbasro...

I'm the person in the comments that says "I made one!" :D It's based on a Grant Searle design: http://www.searle.wales/ I've tried many times to make this on a breadboard and failed. Here's mine (with a homemade resistor array): https://c0dedbad.co.uk/6809.jpg It worked first time. I would have made...

Steve Bak RIP

4th April 1952 - 6th February 2019

A legendary programmer who wrote many games for Microdeal.
He went on to work with the Atari ST & Amiga (and probably other platforms).

Thanks Rob,

Just toying with the idea of a custom ROM.
I have a bunch of 27xxx EPROMs around here. Would be simple to make an adapter.

Hi All,

Long time lurker here. I had an account but I guess it expired.
How do I read Dragon ROMs in my EPROM programmer?

My GQ-4X supports every device under the sun but not the TMS4764.
Any tips?