exxos's Atari, Amiga & retro forum

exxos wrote: 22 Oct 2020 15:58

terriblefire wrote: 22 Oct 2020 15:52 Next time you do a board send me it to DRC before you submit it :P

Yeah yeah, sent another DRC screw up that Eagle caused last night.. going to try to replicate it so @Icky can try the mac version...

Send me an example of a screwed up eagle file. I have windows and mac here.

Few more bits done.. 3.3V regulator, RS232 IC, LS02, Reset IC, simm socket & DAC.

Getting there :)

..and its dead :cry: , no boot, just very dark blue screen :( Probably wont have chance to debug until Thursday :(

It's not even Monday, so it can't be Blue Monday...

I wonder what a blue screen signifies.

So far it looks like IC11 next to the SMT GLUE (ROM _CE) is in upside down :roll:

EDIT:

Looks like my IC6 is faulty :( RESET & HALT inputs are both switching, but HALT is not. Its pulled up to 5V with 1K and is there. its not shorted to GND. But it is low all the time :roll:

Also I had to remove the 3.3V regulator as it was getting red hot.

exxos wrote: 27 Oct 2020 14:17 Also I had to remove the 3.3V regulator as it was getting red hot.

No smoke? I remember the first Sparkalaphobia having the wrong footprint and the 3.3v and 5v were the wrong way round on the reg.

Icky wrote: 27 Oct 2020 15:11 No smoke? I remember the first Sparkalaphobia having the wrong footprint and the 3.3v and 5v were the wrong way round on the reg.

I've not checked it, bigger fish to fry :)

I have lifted up the HALT pin, and replaced the LS11... I am seeing bus activity and ROM OE switching... but still nothing on the screen.. The keyboard light is not flashing either.

The diagnostic cartridge gives a consistent output of garbage every time though :shrug:



Diagrom outputs garbage as well...