KLund1 Posted September 30, 2018 Share Posted September 30, 2018 I found this PBI Test Rev A board in a box of parts from a past Atari Engineer. I had Bob1200XL look it over and he says that it looks to be complete. He says that it probably needs a 9V source to work. Could I use a 1010 psu? I can not find any info about it. Anyone out there have some docs for it? Personally, I have never seen one before, or even know they existed. 7 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted September 30, 2018 Share Posted September 30, 2018 (edited) Will that even plug into the PBI with those LED's and power switch where they are located? It seems like theyed be jammed up against the back of the computer unless you use some extension cable too. Also, what about software to use with it? Any idea of firmware/software is included on the board? Edited September 30, 2018 by Gunstar Quote Link to comment Share on other sites More sharing options...
Timothy Kline Posted September 30, 2018 Share Posted September 30, 2018 Will that even plug into the PBI with those LED's and power switch where they are located? It seems like theyed be jammed up against the back of the computer unless you use some extension cable too. Also, what about software to use with it? Any idea of firmware/software is included on the board? From what I can determine, @Gunstar, there is a ribbon cable attached. Tucked in the top photo, and more evident in the second photo. Similar to the MIO in this regard, I suspect. --Tim 1 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted September 30, 2018 Share Posted September 30, 2018 (edited) Well, you certainly have better eyes than me, Tim, I just thought it was some early/proto PBI connector on there. But now that you mention it, it does look like a ribbon connector is tucked away. Thanks for pointing it out! Edited September 30, 2018 by Gunstar 1 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted September 30, 2018 Share Posted September 30, 2018 (edited) the board is incomplete, it is missing a driver for the jack.... some work will be needed to determine the proper transistor. there appears to be enough done for some function, the patch in chips are unknown on this pcb, but shouldn't matter too much, the good news is there should be more of these pcbs out there to find this out and complete this one way or another. There was either a header from the patch in chips to the empty socket in circuit. or the all in one chip is missing. Edited September 30, 2018 by _The Doctor__ 1 Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted September 30, 2018 Share Posted September 30, 2018 While most of the chips on this board are from 1983 and the board itself from 83, the Atari chip is from 1981 with an odd part number. Quote Link to comment Share on other sites More sharing options...
KLund1 Posted September 30, 2018 Author Share Posted September 30, 2018 There is a black 8 inch ribbon cable attached. Sorry my pic covers it up. The_Doctor what transistor is missing? I see that there is an IC missing. Is that what you are talking about? Suggestions for power? Anyone have any other info about this board? Thanks all !! Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 Yes it will use a standard 9vac Atari computer peripheral ps I dont see a production date on the pcb. I need to reference the chip# but I think it may just be a prom but Im not certain Ive got a stack of these in 850 cases that are modified Let me open a few for comparison 3 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted September 30, 2018 Share Posted September 30, 2018 Thanks Curt, a few photos would be awesome if possible. (net) Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 OKay, here are two for comparison... Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 I have another 5-6 in deep storage, I just kept these two for reference in the office. When I have some time I'll get the others and see if any are different in any way. Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted September 30, 2018 Share Posted September 30, 2018 So what are those two sockets on the left side of the board for? The pics of the bottom of the board don't show any traces leading to them. Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 (edited) Now in regards to the 1981 chip... Since Elizabeth, aka LIZ, aka Z800, aka Sweet-16, Aka 1000/1000x.... then finally 1200 and when launched: 1200XL.... (phew...) was designed starting in early 81 and it was orginally intended to have a 50 pin PBI and right up until August 82 the schematics were still showing a PBI connector, it is very plausible that a PBI testing chip/ROM was done in 81' Here you can see Rev X8A from August 82 with the PBI connector on it. REV X9A doesn't seem to exist and then from X10A onward the PBI is dropped, the dual DB15's that replaced the SIO with a Power on signal to auto turn on peripherals was dropped and what we have from rev X10A forward is the 1200XL design that shipped in Jan 83 http://www.atarimuseum.com/computers/8BITS/1200xl/s-16/s-16-proto_PCB_RevX8A.jpg Edited September 30, 2018 by Curt Vendel 1 Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 Possible future feature, who knows. So what are those two sockets on the left side of the board for? The pics of the bottom of the board don't show any traces leading to them. Quote Link to comment Share on other sites More sharing options...
BillC Posted September 30, 2018 Share Posted September 30, 2018 Yes it will use a standard 9vac Atari computer peripheral ps I dont see a production date on the pcb. I need to reference the chip# but I think it may just be a prom but Im not certain Ive got a stack of these in 850 cases that are modified Let me open a few for comparison I don't see any rectifier diodes which makes me think it uses a DC power supply. The power jack also appears to be mini phone connector type like used with the CO10472/2600. 1 Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 I just pulled out the box they were in, it has several Atari 2600 p/s in it. Great catch, sorry for wrong info... Quote Link to comment Share on other sites More sharing options...
+mytek Posted September 30, 2018 Share Posted September 30, 2018 OKay, here are two for comparison... IMG-7034.JPG IMG-7035.JPG IMG-7036.JPG IMG-7037.JPG IMG-7039.JPG IMG-7040.JPG IMG-7041.JPG IMG-7042.JPG I guess reusing existing plastics for other applications started at Atari. So my 1088XLD inside of a 1050 case can be considered a 'traditional' path to take. 4 Quote Link to comment Share on other sites More sharing options...
Curt Vendel Posted September 30, 2018 Share Posted September 30, 2018 I wish Atari had continued the 850 and just placed the board into an XL version case. It was such a great peripheral, no reason to have discontinued it. I guess reusing existing plastics for other applications started at Atari. So my 1088XLD inside of a 1050 case can be considered a 'traditional' path to take. 4 Quote Link to comment Share on other sites More sharing options...
KLund1 Posted October 1, 2018 Author Share Posted October 1, 2018 The date in the upper left of the board is the same on mine and Curt's. 25 83 Curt, have you powered up one of yours? Then tried connecting to a 800XL and see what happens? Do you have any docs about their uses? Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted October 1, 2018 Share Posted October 1, 2018 (edited) thank you I can now see the jumper that connects the jack in the back as power in and it's using 2600/xep/sx power supply. the two sockets on the side can be populated as desired, as I was of the opinion the break out would allow patching the two together or separate and the header attach to the ribbon would push into the empty socket in circuit, or even future daughter board, floppy board style to give others an idea of what that would look like. the switch looks like it might affect that very section of the board. I wonder if you won't find some info on the test procedure and what to attach in generating test pattern etc. Edited October 1, 2018 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
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