archive.worldofdragon.org

Hello, not all is a dream! I have a real Dragon 64 with an Alldream original cartridge, and I must say that it works flawlesly . . . it's simple great! I can really debug and trace sentence by sentence, put breakpoints and the like, but only in the real world. I dumped the cartridge to my PC (via Au...

Hello, back again I have had the time to test in native mode the Dragon 64 with the HD63C09EP The results with the same BASIC program used before are: FOR-NEXT varies from 2639, 2657, 2712, 2789 to 2811 it seems that it's more variable than in emulation mode Circles results are always the same = 95 ...

Hello, I have finally opened one Dragon64 and changed the CPU for a HD63C09EP. It worked alright and doesn't get hot at all! I have made a little BASIC test program to compare with four different machines: 10 A=TIMER: FOR I=1 TO 50000:NEXT: PRINT TIMER - A 20 IF INKEY$<>"C" THEN 20 30 PMODE3:PCLS:SC...

I have received HD63C09EP and HD63B09EP, hope they could be used instead of our MC6809 Do you know if there is any problem with these parts? I have been searching for places where BASIC and DOS do have a RTI code (&H3B), these are the ones that a BASIC program has detected: 9D42 rti - Interrupt from...

Hello, I'm sure you heard about the problems with packs coming from China to Europe. Mine has arrived on wednessday, 7th Now I have 2 HD63B09 and 2 HD63C09 If nothing interferes, tomorrow I will put one of them in a Dragon64. By the way, after reading some info about HD6309 it seems that the two ext...

Hello,
I have managed to scan all the pages, zipped in one file and uploaded it to mediafire. These links will work
http://www.mediafire.com/?19bckw3gakllm4l
or
http://www.mediafire.com/file/19bckw3ga ... S_v4.1.ZIP

Pere Serrat

Hello, Yes, it exists indeed. I have a printed copy in the old perforated paper format for real vintage printers with some info about that! This document is from Eurohard and states: DRAGONDOS Version 4.1 (c) Copyright 1985 EUROHARD, S.A. Revised by JORDI PALET date 10/01/1985 In fact if you disambl...

No, I haven't done it because I still haven't received may last order. The very first one I made (10 WD2797) arrived in a fairly 3 weeks (came from Singapore) The second order was a mix: 4 CPU (2 63B09 and 2 63C09), two sound Chips and a Video one, all of them vintage chips to play with. Unfortunate...

Hello Zephyr, I just read this idea somewhere, in fact I found another proposal: Just piggyback a socket on the 6809 and put the 6309 in the socket, with the use of a switch to work with the original or the 6309 at will. I can't see any advantage unless the perfomance of the 6309 is going to be mesu...

Hello Zephyr, I have one Dragon32, one Dragon64 and still some deals going on. I have not opened them by now, but the idea was to make a simple board with the two CPUs in parallel and then enable with a switch one of them (/CE), with the computer turned off. The board will sit on the CPU socket. Any...