archive.worldofdragon.org

The CPU looks at the reset vector at $fffe when it is reset. On the Dragon/CoCo $fff0-$ffff is a mirror of $bff0-$bffe (I think the SAM does this). The emulator should do it the same way to work correctly with any ROM. I now do this with https://github.com/jedie/DragonPy/commit/70fa59dd9ac5e0ce9d58...

Does anyone spontaneously knowns what's the different between the Dragon and the CoCo around the PIA/Keyboard and the related ROM code it?

I know only that the keyboard matrix is wired differently a little bit.

Yes, http://archive.worldofdragon.org/index. ... 0&offset=0 listed 105 "ophaned pages"...

What i mean is, that there are so many information in the Wiki, but you didn't see them directly... You have to search and hope that you search with the right keywords ...

Ah, i found it in the ROM listings... e.g.: D32: BFF0 0000 neg <$00 BFF2 0001 neg <$01 BFF4 0001 neg <$01 BFF6 0301 com <$01 BFF8 0F01 clr <$01 BFFA 0C01 inc <$01 BFFC 0601 ror <$01 BFFE 09B3 rol <$b3 Simple6809 (based on CoCo Color BASIC): 5389 * INTERRUPT VECTORS 5390 fff0 ORG $FFF0 5391 fff0 00 0...

From where comes the addresses in the reset vectors ? From: http://archive.worldofdragon.org/phpBB3/viewtopic.php?f=5&t=4308&p=9231#p9230 The CPU looks at the reset vector at $fffe when it is reset. On the Dragon/CoCo $fff0-$ffff is a mirror of $bff0-$bffe (I think the SAM does this). The emulator s...

With https://github.com/jedie/DragonPy/commit/0df724b3ee9d87088b524c3623040a41e9772eb4 i started to add a CoCo, too. But don't know much about CoCo. Seems that CoCo 1 and 2 are very similar to the Dragon Hardware, but CoCo 3 is more advanced. At least i have to change the keyboard matrix. I just use...

I now see the Wiki page http://archive.worldofdragon.org/index.php?title=MC6847 - found by random ;) I found also a few pages, that are interesting, but hard to find :( So i started to add a few categories and "tag" some pages with them. A list of existing categories is here: http://archive.worldofd...

I have now add the Block Charachters by hand:

I'm work on the GUI... I have removed Pygame and use Tk only... Now it looks like this: http://www.jensdiemer.de/static/jensdiemer.de/screenshots/20140805_DragonPy_Dragon32_Listing.png (RUN output here: http://archive.worldofdragon.org/phpBB3/viewtopic.php?f=5&t=4909&p=11571#p11571 ) Big TODO is to ...

I found https://en.wikipedia.org/wiki/TRS-80_Color_Computer and the related text: The final significant change in the life of the CoCo 2 was made for the models 26-3134B, 26-3136B, and 26-3127B (16 kB standard, 16 kB extended, and 64 kB extended respectively). Internally this model was redesigned to...