LL pcb

I approve this idea!!
:D

Speak to me about this but don't forget to breathe in the air while you're on the run. We have time to enjoy the great gig in the sky but eventually we'll have to show them the money. It's up to us and them but you can have "Any Color you like". Don't get brain damage while watching the eclipse, dude ... peace, and shine on you crazy diamond ... :)


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Alright, hold the phone, so all it took was a lousy photo? I'm guessing you had more info on the top part of the board. But I'm surprised that photo could be all you needed to repro a board.
 
Need a "Dark Side of the Moon" edition ... black with white silkscreen. :001_scool:

Could do that for another run, but it's a bad idea for protos....

Last run of boards I did were in black and blue... the blues (to match the repro MH boards) were fine, but the blacks make the traces really hard to see, so if any mods need to be done for debug, it'd suck....

The only think more douchetastic that black solder mask is 'negative' silk screen.
 
Alright, hold the phone, so all it took was a lousy photo? I'm guessing you had more info on the top part of the board. But I'm surprised that photo could be all you needed to repro a board.

I had the schematics as well -- much of which I'd already put into my CAD program when helping to verify the design of the Omega Race repro. (Omega Race ripped off Asteroids which was based on Lunar Lander). The pics were just for verification and to make the layout closer to a 1:1 copy of the original for people who care.

From helping Like debug Quantum and MH I knew that Atari's schematics aren't always correct, so pictures of the board are useful to verify nothing is drastically wrong in the schematics. In this case all I really found is that I'd shorted 3MHz and 3kHz nets when doing the transcription.

...and I really didn't *need* pics of the back of the board... I was just too lazy to move a dozen cabinets around to get at my Lunar Lander to take my own pic ;)
 
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Speak to me about this but don't forget to breathe in the air while you're on the run. We have time to enjoy the great gig in the sky but eventually we'll have to show them the money. It's up to us and them but you can have "Any Color you like". Don't get brain damage while watching the eclipse, dude ... peace, and shine on you crazy diamond ... :)


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If this happens, I'm gonna have to rob a bank!

:D
 
Ah thanks for the info, was curious how reproducing something like this is done.

Debugging can be the pain-in-the-ass part of it. Me and Mark were up at 1AM a number of nights looking at a Logic Analyzer screen.

The fun part is, we figured out how to have him control my Logic analyzer from where he is in Boston.
 
Debugging can be the pain-in-the-ass part of it. Me and Mark were up at 1AM a number of nights looking at a Logic Analyzer screen.

The fun part is, we figured out how to have him control my Logic analyzer from where he is in Boston.

And what issues did you debug? Missing traces? Bad devices?
 
Yes to all the above. Found a few missing traces, found a few mistakes in the original Atari Schematics, bad IC's. I think we hit them all with the Major Havoc.

One that really messed with my head was I had put an incorrect chip in where a different chip should have been. Being a dual processor board, it just happened to be where the signal lines were to communicate between the two. Yea, that one stressed me out because I was sure the traces were laid out exactly right, but still couldn't find the cause.
 
Any chance you have copies of corrected schematics for Major Havoc available ? Troubleshooting a few boards with mixed results. (Not me, my tech)
 
Thought I had all the parts in, but the 74ls399s were back ordered so I need to find another source (kinda important for getting the vector counts over to the DACs).

Guess I won't be playing any Lunar this weekend.

Might fire it up and smoke test the rest of the board though -- see if it runs code w/o watchdogging.
 
Thought I had all the parts in, but the 74ls399s were back ordered so I need to find another source (kinda important for getting the vector counts over to the DACs).

Guess I won't be playing any Lunar this weekend.

Might fire it up and smoke test the rest of the board though -- see if it runs code w/o watchdogging.

So you'll end up selling fully populated boards or just blank ones?
 
Blanks, and a handful of parts kits.

I don't have a pony in this race because I don't have a LL game but I'm just curious how much more expensive it would have been if you'd made complete, ready-to-go boards?

I'm guessing it would be absurdly expensive to have those made because no one is doing that when they make repro boards?
 
I don't have a pony in this race because I don't have a LL game but I'm just curious how much more expensive it would have been if you'd made complete, ready-to-go boards?

I'm guessing it would be absurdly expensive to have those made because no one is doing that when they make repro boards?

It's not that hard to solde rthem up -- it's just time consuming...
Fully assembled and tested new boards would end up going at or above going rates for old stock working boards.
 
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