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Dragon 64L PAL Video Schematic v3 Corrected some minor typos. The schematic has been captured using the open source tool KiCAD. The shape of most of the parts has been redesigned to match the look of the Dragon Data schematic and included in a lib file. Although I have checked each part, line, ref a...

admin wrote:Hi! I have a boxed (working) Dragon 64 and (heavy) floppy drive for sale.
I am open to 'offers' but be aware that the postage will be pricey due to the 'brick' of a floppy drive!!!!

I also have loads of games for sale! (tape)

Cheers
Fatboy

Do you still have the disk drive on sale? Thanks!

I have just finished the schematic of the video section. You may find the files in the upload section. There is a pdf (A3) with the whole circuit in it. Could anyone please check the text grammar?. Thanks!

See "Video Problem" topic in the General subforum

Now I should build a cassette lead and try loading a program. I accept recommendations ;) That's a tricky one to answer, do you have any joysticks? For a Gauntlet style game you may want to try "Glove" ( http://archive.worldofdragon.org/index.php?title=GLOVE ). If you have a working joystick and wi...

sixxie wrote:

sixxie wrote:I'll check my A3 photocopies of the Dragon 64 one when I get home on Monday

At least I would, if I knew where they were. Sorry, it's not in either of my Dragon docs boxes, so it might take a while to find.

Edit: oh, but well done on getting the last bit fixed

oh, ok, thanks anyway!

Thanks, it works I can see all the colors!!

Anyway, I will complete the schematic for the video section and I will post it here as soon as it is finished.

Thanks for your help!

Now I should build a cassette lead and try loading a program. I accept recommendations

However, the R-Y signal is not directly connected to the VDU. It goes through two ICs (4053, 2318) before it finally gets to the R-Y input of the LM1889. I have checked the power pins (+5V) and seem to be right. You are right, I should also check all the connections of the OA signal from the VDU to...

If you mean pin 3 as shown on this page http://www.grempc.demon.co.uk/dragon/info/pinouts.html then that is correct. I would have to check on the SCART connector as I use the Composite In socket on my TV. But if you have the same problem with both video outputs then the fault probably does not lie ...

Thanks!