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Hi, using my Java app has given the very same error. This is the app I just 'copied' when building the dweeb so it has inherited that error. Debugging the Java app I have found the reason why this has happened: When a file needs more than one entry in the directory, usually it occupies another one i...

Hi all, I have got my drivewire adaptor working now on a D64, all seems to behave as expected and have been playing with some of the very useful dweebs posted here. Have encountered one of my disks though that VDIR doesn't want to process. It doesn't generate an error (either on the Dragon or the s...

the BIN I uploaded as CAS and WAV work right for me.
The same applies to the VDK with it and the basic loader.

Test in a Dragon 32 and Dragon64 with and without drives

cheers
pere

If anyone would like to have a look at the source code, here is the disassembled listing for the ML routine(s)

cheers
pere

Hello I isolated the two parts of the program: A Basic program (the menu) A ML small routine I attach both as cas and wav files to load into XRoar and inside an VDK Carefull. The Basic program has been slightly modified so that it loads the machine code. Right now it looks for it in the disk system,...

Hi Stew, great explanation, thanks for those reminders. I had worked quite a lot in the electronics domain but that was in the 80's, then I went into software development ... so almost everything has been forgotten! This weekend I am going to have very little free time, that's good too ;-) Hopefully...

Hello Stew, thanks one more time. On the Dragon 64 the emitters are tied to -5V too. I did not pay much attention at that point :( I think that i saw somewhere a picture of the chroma signal and its level seemed to me to be always above 0V, so now I think that maybe the -5V wouldn't be mandatory for...

Hi Stew, I have been looking at the Dragon 64 schematics and are similar to the D32 ones ... The IC is number 17 and there is a link from Chroma signal to the base of the common emitter transistor at Resistor num 44 (num 65 in Siemens D32) This wire is labelled as "Disconnect for B/W" so we are look...

Hi Stew, thanks for your advice Just a question, how do you tell that signal Y is inverted in the 6847? It would mean to add a common emitter transistor to invert it (0<->5V), I hope. According to the 6847 datasheet, Y contains: Voltage sync at 1V and all other levels below that value ... don't know...

Hello, I bought one of these YUV2VGA converters. It has inputs for signals as RGB and YPbPr too. Looking at the MC6847 Datasheet, there are three pins with that later kind of signal: Pin 10 has Fib = R-Y or Pb Pin 11 has Fia = R-Y or Pr Pin 28 has Y (luma) I was thinking of connecting the signal fro...