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Mamemeister

Atari 400 Memory advice please!

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Chaps, appreciate a spot of help please.

 

Is the CX853 16K memory cart compatible with the Atari 400 or is it only for the Atari 800?

 

Thanks in advance.

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Chaps, appreciate a spot of help please.

 

Is the CX853 16K memory cart compatible with the Atari 400 or is it only for the Atari 800?

 

Thanks in advance.

 

If I'm not mistaken, it's the same board minus the case for the 400. There is a 48K board for the 400, but there is a slight bit of modification that needs to be done for it to fit due to the size. And of course soldering a few wires.

 

Best Electronics sells both the 16K and 48K boards: http://www.best-electronics-ca.com/800.htm

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Yes. Obviously you have to open the case on the 400 to replace the board of course. Here is an excerpt from the service manual:

 

4.3.5 RAM Memory Boards
The ATARI 400 and 800 Computers come equipped with either 8K or 16K
RAM memory boards. The 8K and 16K RAM memory boards are the same
except for the 8K or 16K ememory chips and the addition of connector
jumpers on the 8K RAM memory boards...

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Also from the service manual, notice the parts list:

 

6.2 SPARE PARTS LIST

The following is a list of the minimum spare parts that are to be
maintained at an authorized Service Center:

 

Description Part No. Quantity

 

800 Motherboard CAO14829 1
400 Motherboard CAO14807 1
800 Power Supply CAO14171 2
400 Power Supply CAO14155 2
CPU Printed Circuit Board CAO14800 2
lOK ROM Printed Circuit Board CAO14090-01 1
16K RAM Printed Circuit Board CAO14802 2
8K RAM Printed Circuit Board CAO14802 1

 

No separate board for 800/400 for RAM anyway. Obviously the 800 holds a few more RAM boards than the 400.

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If you are going to the expense and time to tear open your 400, spend the $30 and get the 48K RAM board. It will run anything an 800 will. There are only four wires to solder on the bottom of the board. Very easy.

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Your profile doesn't list your locale, but you should be aware that some PAL 400 users have reported corrupted video with the Atari 48K board.

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I third that. Get the 48k board before I buy them all. ;)

 

Looks like I waited too long - they seem to be all gone. :-)

 

Has anyone done anything like turn the schematic into a set of gerber files (for a small/cheap PCB run at OSH Park)?

I'm assuming "no" since I haven't found much in the Internet about Atari and making new (cloning existing) PCBs (just the SIO breakout board I found on OSH, and ordered).

 

I don't have a lot of experience with schematics or drawing circuits - just know enough to import an Eagle file. I'd really love to upgrade this 400 but all the memory kits are gone.

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