{"id":87,"date":"2016-06-09T19:51:16","date_gmt":"2016-06-09T07:51:16","guid":{"rendered":"http:\/\/www.junofirst.com\/?p=87"},"modified":"2016-06-09T19:54:53","modified_gmt":"2016-06-09T07:54:53","slug":"whats-really-inside-a-sega-mc8123","status":"publish","type":"post","link":"http:\/\/www.junofirst.com\/?p=87","title":{"rendered":"Whats really inside a Sega MC8123?"},"content":{"rendered":"

Dead Perfect Billiards MC8123A donated itself to science.<\/p>\n

Desoldered the aluminium cover and bottom little pcb and magically appeared a black NEC MC8123A.<\/p>\n

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Apply some heat at the plastic ‘tub’ peels off.
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Apply some more heat and the potting mix turns to rubber and can be chipped\/peeled away to expose the little ceramic pcb holding the battery and a 3771 reset chip.<\/p>\n

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The bottom still has potting mix intact, so more heat and chipping away with a screwdriver reveals this.<\/p>\n

\"image\"<\/a><\/p>\n

Unfortunately the solder holding the legs on melted and they came off. All thats left is a ceramic pcb with what’s probably glob tops.<\/p>\n

Unfortunately I don’t have the chemicals to dissolve this stuff and heat doesn’t seem to do anything to it.<\/p>\n

\"image\"<\/a><\/p>\n

I wonder why there are 6 solder points on the top of the pcb? Maybe a way to program the MC8123’s encryption ram?<\/p>\n","protected":false},"excerpt":{"rendered":"

Dead Perfect Billiards MC8123A donated itself to science. Desoldered the aluminium cover and bottom little pcb and magically appeared a black NEC MC8123A. Apply some heat at the plastic ‘tub’ peels off. Apply some more heat and the potting mix turns to rubber and can be chipped\/peeled away to expose the little ceramic pcb holding … Continue reading Whats really inside a Sega MC8123?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,3],"tags":[],"class_list":["post-87","post","type-post","status-publish","format-standard","hentry","category-arcade","category-reverse-engineering"],"_links":{"self":[{"href":"http:\/\/www.junofirst.com\/index.php?rest_route=\/wp\/v2\/posts\/87","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.junofirst.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.junofirst.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.junofirst.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.junofirst.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=87"}],"version-history":[{"count":3,"href":"http:\/\/www.junofirst.com\/index.php?rest_route=\/wp\/v2\/posts\/87\/revisions"}],"predecessor-version":[{"id":90,"href":"http:\/\/www.junofirst.com\/index.php?rest_route=\/wp\/v2\/posts\/87\/revisions\/90"}],"wp:attachment":[{"href":"http:\/\/www.junofirst.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=87"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.junofirst.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=87"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.junofirst.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=87"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}