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Yet another Asteroids |
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Nes4life ![]() Senior Members ![]() ![]() Joined: 02 Jan 2014 Location: Ashford, Kent Status: Offline Points: 5345 Feedback: 5 |
![]() ![]() ![]() ![]() ![]() Posted: 24 Feb 2018 at 9:42pm |
Got another Asteroids PCB on the bench - this time for @pjkram. It's a late revision with the blank column in the middle. All this means is that some ICs have shifted right one column.
As is usual for me, I tend to go to the last ICs passing signals to the DACs and work backwards. In this case I found low outputs on both LS157 but the inputs were fine. Interestingly, piggybacking only showed improvement on D/E10(11) and not F/H10(11). For the size issue I started at the LS273 at K7, saw the scale signals looked healthy and moved on to the LS175 at M7 where I found stuck outputs. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() For the size issue investigation: ![]() That brightness issue: ![]() What is should look like: ![]() Edited by Nes4life - 27 Feb 2018 at 10:46pm |
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NES4Life
------------- Owner of ... too many cabs! |
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bonehead ![]() Senior Members ![]() ![]() Call me jamma jim Joined: 05 Jan 2013 Location: Bedfordshire Status: Offline Points: 11523 Feedback: 5 |
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Another nice fix and good write up on how you did it.
Keep up the good work. |
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Always looking for a bargain.
Wanted., bezerk, mad planets. |
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pjkram ![]() User ![]() ![]() Joined: 20 Aug 2015 Location: Kent Status: Offline Points: 135 Feedback: 0 |
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Looking forward to finally play this!
Great work Phill ![]() Edited by pjkram - 27 Feb 2018 at 5:53pm |
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funhouse ![]() Senior Member ![]() ![]() Joined: 28 Mar 2016 Location: West London Status: Offline Points: 7018 Feedback: 5 |
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Good stuff Nes4life. ![]() Edited by funhouse - 27 Feb 2018 at 6:12pm |
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Nes4life ![]() Senior Members ![]() ![]() Joined: 02 Jan 2014 Location: Ashford, Kent Status: Offline Points: 5345 Feedback: 5 |
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And that's that! Brightness issue was a LS164 at K9 (K10). It's basically mastering the Z-out along with the scale signals. Now I'm going to soak-test it
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NES4Life
------------- Owner of ... too many cabs! |
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