Coleco ADAM Power Supply question

[Inky]

I want to get rid of my ADAM's clunky printer, and just use the power supply found inside. Anyone have any idea on how to do this?

[desiv]

Here you go:

Pins 6,7,8, & 9 you can ignore.

 

Personally, I used an old AT power supply I had lying around and just the cable from the Adam printer.

____________________________________

 

ADAM Printer/Power Port:

 

(Colors of COLECO wires are indicated after voltage ratings)

1 2 3 4 5

6 7 8 9

 

 

Pin 1 = 12V BROWN

Pin 2 = 12V RED

Pin 3 = 5V ORANGE

Pin 4 = -5V YELLOW

Pin 5 = Ground GREEN

Pin 6, 7, 8 = Serial Data Clock, Serial Data, Signal Ground?

Pin 9 = No Connection

 

desiv

 

p.s. I was hoping to use the PC power supply for the Adam Disk Drive also, but it's 9 VAC 31VA, and I can connect and cut wires, but that's it. :-)

[Ze_ro]

Pin 6, 7, 8 = Serial Data Clock, Serial Data, Signal Ground?

 

Are these wires what the ADAM uses to communicate with the printer? Or is there another cord somewhere?

 

--Zero

[CPUWIZ]

Pin 6, 7, 8 = Serial Data Clock, Serial Data, Signal Ground?

 

Are these wires what the ADAM uses to communicate with the printer? Or is there another cord somewhere?

 

--Zero

 

Yes they are, power and serial communication are in the same cable.

[Inky]

Here you go:

Pins 6,7,8, & 9 you can ignore.

 

So, I can pull the PS out of the ADAM, and then just disconnect 6 7 8 and 9?

[desiv]

6, 7, and 8.

 

I seem to remember 9 is NC or not connected.

 

If it is, clip it! :-)

 

desiv

 

btw, the Adamnet communication is really interesting. You can think of it as serial token-ring (for those familiar with token-ring networking) in a way.

 

It's half duplex (why you need a token type of methodology to decide who talks, since it's also shared), and 62.5 baud.

 

Now, there's the problem. Modern day UART chips use crystals and division to get to baud rates, and 62.5 ain't one of them. Too bad, since it would be sweet (IMHO) to hook up to the Adamnet with a PC. You could do it with an external serial device with a custom crystal, but that's no longer easy, and you still have to write the software...

 

If I even find a PC with a flexible UART that can get to 62.5, I'd love to just hook it up and watch the traffic... Should be pretty easy with Linux. Windows doesn't support 62.5 either, although I've read you can add non-standard baud rates if the hardware supports it.

 

Alternatively, you can change the crystal (can't remember to what. there was a great discussion on usenet about this awhile ago..) and set your port to 56, which would actually be 62.5, except you break all your baud rates then. :-) Imagine a USB to Adamnet adapter tho...

 

Sorry.... babbling again.. :-)

[Zaxxon]

Yes, you can just take the PS out of the printer and use it. Just cut the lone purple wire. That's all you need to do.