Yay!Icky wrote: Tue Sep 25, 2018 9:47 pm Well that fix made my floppy drive start working - need to check it out with some tests.
Desktop now shows Drives and Trash.
Arse
We are making great progress but I guess we keep having these brick walls in front of us but we keep smashing them down.exxos wrote: Tue Sep 25, 2018 9:49 pmYay!Icky wrote: Tue Sep 25, 2018 9:47 pm Well that fix made my floppy drive start working - need to check it out with some tests.
Desktop now shows Drives and Trash.
I think the IRQ was "Stuck" and the GLUE was thinking the floppy wanted constant DMA access..
Arse
That is true! you been going like a man possessed these past days!Icky wrote: Tue Sep 25, 2018 9:53 pm We are making great progress but I guess we keep having these brick walls in front of us but we keep smashing them down.
Odd...Icky wrote: Tue Sep 25, 2018 9:53 pm One thing I have noticed is the screen flashes white every now and again - every 3 mins or so.
Yeah! "exxos re-mashed version" of it thoughIcky wrote: Tue Sep 25, 2018 9:53 pm Another thought is that when we have finished and get a working STF you will have a modern legible schematic.
No I don't have pin 8 grounded - let me try thatexxos wrote: Tue Sep 25, 2018 9:57 pm Do you have both gnds connected on the keyboard connector ? Phil mentioned the keyboard caused issues without pin 8 connected..
Well thats the funny thing I did get sound at one point when testing with the diagnostic cart - don't know when abouts but I definitely had sound.exxos wrote: Tue Sep 25, 2018 10:11 pm As for the audio, we dont know if the new audio amp works ... probably idea is to try the diag-cart via serial and get the sound test running... check the audio out pins on the YM chip directly on scope and see if you see some activity there...
I'm checking the YM circuit in general and not found anything yet...
Sound was before GLUE DATALINE FIX. I will check with scope thoughIcky wrote: Tue Sep 25, 2018 10:14 pm Back in the thread somewhere. Cant remember if it was post or pre the GLUE DATALINE FIX.
Even more oddities then.. datalines were definitely wrong... not good when a fix breaks something thoughIcky wrote: Tue Sep 25, 2018 10:17 pm Sound was before GLUE DATALINE FIX. I will check with scope though
Missing resistor on the keyboard ... man, what is it with me and pull up resistors 
