soviet Posted November 28, 2012 Share Posted November 28, 2012 Hello, recently i came accros a pair of atari 8 bit computer carts. If someone can tell me what this cartriges are, they have eproms inside and white silver pcbs. on the pcb says: 1982 eastern house v2 BG83 front on the back says rear RC on the labels says: PROMOVISION VIDEO DISPLAY CORPORATION (212) 0969-8101 the sticker over the screw hole says 2.3 8X here are the photos: Quote Link to comment Share on other sites More sharing options...
bennybingo Posted November 28, 2012 Share Posted November 28, 2012 Just a word of advice...you don't want to expose those EPROMS to light and definitely don't use a camera flash on them. They are sensitive to light exposure. As for the origin of those carts, I have no idea. What is on them? Quote Link to comment Share on other sites More sharing options...
Greg I Posted November 28, 2012 Share Posted November 28, 2012 Based on the manufacturer (Eastern House), I'd say it was a promotional item (demo) for Monkey Wrench. (Just a guess...) Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted November 28, 2012 Share Posted November 28, 2012 Just a word of advice...you don't want to expose those EPROMS to light and definitely don't use a camera flash on them. They are sensitive to light exposure. They are sensitive to Ultra-Violet radiation only, like sunlight and some interior lightning, There's no UV in LED- and bulb-based camera flashes. 1 Quote Link to comment Share on other sites More sharing options...
soviet Posted November 28, 2012 Author Share Posted November 28, 2012 I will try them on my 130xl on the weekend and post pics of the carts working Quote Link to comment Share on other sites More sharing options...
Tempest Posted November 28, 2012 Share Posted November 28, 2012 Eastern House did utility carts for the Atari 800 computers. Most (all?) use the right cartridge slot, so if this is an Eastern House cart you will need an 800 to test it. Quote Link to comment Share on other sites More sharing options...
bennybingo Posted November 28, 2012 Share Posted November 28, 2012 They are sensitive to Ultra-Violet radiation only, like sunlight and some interior lightning, There's no UV in LED- and bulb-based camera flashes. False...I have seen it happen just from overexposure in a well lit room. Flashbulbs can definitely destroy an EPROM as well. http://en.wikipedia.org/wiki/EPROM QUOTE: "A programmed EPROM retains its data for a minimum of ten to twenty years [5], with many still retaining data after 35 or more years, and can be read an unlimited number of times. The erasing window must be kept covered with an opaque label to prevent accidental erasure by the UV found in sunlight or camera flashes." QUOTE: "Some microcontrollers, from before the era of EEPROMs and flash memory, use an on-chip EPROM to store their program. Such microcontrollers include some versions of the Intel 8048, the Freescale 68HC11, and the "C" versions of the PIC microcontroller. Like EPROM chips, such microcontrollers came in windowed (expensive) versions that were useful for debugging and program development. The same chip came in (somewhat cheaper) opaque OTP packages for production. Leaving the die of such a chip exposed to light can also change behavior in unexpected ways when moving from a windowed part used for development to a non-windowed part for production." Quote Link to comment Share on other sites More sharing options...
soviet Posted January 23, 2013 Author Share Posted January 23, 2013 I tested the carts on my trusty Atari 65xe PAL and only got the blue atari screen the block cursor and anything more. Quote Link to comment Share on other sites More sharing options...
ilaskey Posted January 23, 2013 Share Posted January 23, 2013 As was noted higher up, you need an 800 to test them, nothing else will do. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted May 3, 2016 Share Posted May 3, 2016 Hello, recently i came accros a pair of atari 8 bit computer carts. If someone can tell me what this cartriges are, they have eproms inside and white silver pcbs. on the pcb says: 1982 eastern house v2 BG83 front on the back says rear RC on the labels says: PROMOVISION VIDEO DISPLAY CORPORATION (212) 0969-8101 the sticker over the screw hole says 2.3 8X here are the photos: Any chance of getting a dump of this cart? Quote Link to comment Share on other sites More sharing options...
soviet Posted May 3, 2016 Author Share Posted May 3, 2016 I'm sorry but i have sold them long ago. Quote Link to comment Share on other sites More sharing options...
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