Do all Zaxxon PCBs (original & bootleg) use the same pinout?

You can see pictures of the various Zaxxon PCBs at the following link: http://www.crazykong.com/pcbs/T - Z/

Thanks for the info.

The safe bet would be no.

When I was taking test I could almost know if something is true or false by the words all/always none/never.

I don't know that hardware but with the galaga they are diffrent, orginal vs bootleg.
 
Thanks for the reply. I do need someone in the forum that is familiar with these boards to please give me an answer. I can only find pinouts for the original board....none for the bootlegs which leads to think that they all use the same pinouts.
 
Bootlegs don't always have the same pinout as the original. Which I find strange, since if you're making a bootleg, wouldn't you sell more of them if it was a cheaper drop-in replacement for the original?

If you have the board, you can determine the pinout using a multimeter fairly easily.
 
Bootlegs don't always have the same pinout as the original. Which I find strange, since if you're making a bootleg, wouldn't you sell more of them if it was a cheaper drop-in replacement for the original?

Well, unless you were replacing a defective Zaxxon board, you probably wouldn't be putting it in a Zaxxon cab anyway, so it wouldn't have mattered.
 
I cant speak for the bootlegs but it is actually likely that they all share the same pinout at the edge connector. Most differences between official and bootleg were on boards circa 1986 when the JAMMA standard was ratified. Often the official board maintained whatever crazy-arse pinout the vendor was using at the time but the bootleggers opted to make the bootleg JAMMA. Zaxxon is from 1982 so an eternity before JAMMA in arcade years.

Only two official PCB variants are shown at that site above, the early revision is a 3 PCB stack and it is shown assembled, and as the separate boards, so 4 photos are actually from the rev1 boardset.

Zaxxon1a.jpg is the assembled PCB set comprising the boards shown separately as 1b, 1c and 1d.

1b is the sound board
1c is the CPU board
1d is the video board

The image Zaxxon.pcb shows the rev 2 board which is more compact and has the audio board circuitry built on the CPU board.

The 3 board set has the same edge connector pinout as the 2 board set with the exception of the speaker connections which need to connect to the sound board directly. The three board set also needs external power for the audio PCB as the ribbon cable is only for data, it does not carry power.

It needs 12v, 5v and ground via the 6 pin connector you can see in the 1b photo, the speaker connections also are via this connector. There is a 4 pin connector too which is for an external additional volume control which you can ignore. The 12v on Zaxxon is not just for the amp chip, the video generation system uses it too so even on the 3 PCB stack you need to give the main PCB 12v even tho it has no amp chip, or you get no signs of life. The main board also needs -5V.

The only pinouts I could find online are for the 2 PCB set, as is the schematic, so I have had to double check everything before powering mine up, it now works with the exception of a slight audio fault that I am hoping will be fixed by the replacement chip that is sat on my desk at the moment :)
 
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