Atari 800 PCB boards

[Scooter83]

I've seen boards with assy ca 060053 which typically would be used on diagnostic carts and prototype projects

 

Next I've seen ca 060063 which are typical green PCB normal release games. Can be or not be socketed rom chips.

 

But now I'm getting a PCB that says SKRF 30 for the part number.

 

I've done research going through part lists hoping to find what kinda board it is and original purpose of it to be. Looks like both boards listed above. Has sockets for eproms. Just something new I've never seen and would like to learn more.

[+Nezgar]

I got a couple of the CA060063 PCB's from B&C. Plug in your own 2764 EPROM for an 8K cart, or 2 2764's for a 16KB cart, so those are still easy to come by NOS. Best sells them still too, as well as empty brown shells.

 

Can you post a picture of the PCB in question?

 

PS: "PCB board" aka printed circuit board board?

[Scooter83]

Where the Ca or Co part number usually is this just says SKRF 30. Just something new I didnt see before.

[+Nezgar]

So, this is a 2x2KB EPROM board. Two 2x16's to make 4KB. Interesting the left chip is a 2516, and the right is a 2716. Probably explains the little mod with the blue wire, so that whomever put it together could deal with the pinout difference between the 2 chips. Very early Atari carts were only 4KB, like the Educational Master Cartridge, and SALT in this case. The 4KB either only filled the higher half of the 8KB cartridge space, or repeated it twice.

 

Both B&C's old list, and the BEST catalog for cart PCB's (Page 103) do not list any 2516/2716 4KB EPROM PCB's.

 

Stock of these probably dried up very early in the Atari 800 timeline, as 8KB became the norm.

 

Or maybe it's just a modified 8K PCB...