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The lack of color was somehow system inherent. I read somewhere, the hole story started with GCS acquiring 120.000 (if I remember that number correctly; else any other big number:)) of black and white TV-tubes for cheap money. After that they started deliberating, what they could do with those :D . ...

I finally had some time to play around with Rink's fine I/O cartridge. I did not start any big project, just made some small tests. Handling of the cartridge is really easy: output via &Hff40 and input via &Hff41. I tried the fasted switching loop I could make (without speed poke): - one-line basic ...

Hi, did you notice? On November 1st, there was the official " International Play Your Vectrex Day ". Check it out on "http://vectrex.wikia.com/wiki/International_Play_Your_Vectrex_Day"! It's also a MC68A09 machine (a little bit faster and quite different). So I thought I'd "meet" somebody of you the...

Sorry, did not want to start a discussion about further upgrading my D32(64) in this thread :). It's the wrong section. It just happend. Most of the time I don't need the upper bank. I could change SAM mode manually and copy parts of the rom. Yeah, maybe I should change the roms, but I want to read ...

Part seven: 03-Nov-2013: modified another Tandy rom --------------------------- Katerpillar modDragon.rom Finally solved. A tough one. --------------------------- Problem: Dragon crashed when jumping from rom to ram, after copy-routine and did strange things. After RESET Game could be manually launc...

Thanks, for the help. I just have to do some little tests before that. Maybe I already have the solution... Btw. my Dragon is a D32, which I upgraded to 64kBytes, but Basic and Kernel are still D32. So, I have an upper bank, which is good for "duplidisk". For example the RAM-tests of all the diagnos...

Part six: 02-Nov-2013: modified another Tandy rom --------------------------- Starblaze modDragon.rom That one was not easy. Adapted keyboard behavior: Skill selection with number keys 1,2,..,8 is now working. Keyboard response all in all is reliable, but quite slowly. Press key and wait 0.5 seconds...

Thanks Pere, if I understand correctly that tool needs ram in the upper bank? It's not that I absolutely must have that rom, it's just that I want to know what is the reason for the strange behavior of that rom. And I know more in the meantime. Btw., it's in reality just a 4k-rom and it obviously to...

Still fighting with this one! I've analyzed the code a bit. They start with some checks (cold start, top of ram at least 16k, CoCo reset vectors). If there is anything, that looks like a copy or not a CoCo, then they simply jump into an endless loop ;) . Then there is a block copy (c03f...d539 to 29...

Hi Tony, welcome on board. You haven’t missed much:) Well, I guess I’m the right person to answer your questions. I’m writing all of this for the second time, because the phpBB-system simply knocked me out, when I hit the Preview-Button :roll: and all was lost! What’s involved? Not too much. You get...