{"id":1865,"date":"2016-02-15T21:59:25","date_gmt":"2016-02-15T21:59:25","guid":{"rendered":"http:\/\/blog.system11.org\/?p=1865"},"modified":"2017-05-21T23:01:06","modified_gmt":"2017-05-21T23:01:06","slug":"reading-hn62312-chips","status":"publish","type":"post","link":"https:\/\/blog.system11.org\/?p=1865","title":{"rendered":"Reading HN62312 and HN62304 chips"},"content":{"rendered":"<p>I recently ended up buying a Jaleco Lord Of King (Astyanax) PCB, which also came with a P-47 ROM board &#8211; or maybe it was the other way around.\u00a0 When I looked at it and my existing P-47, and the other Japanese P-47 type I realised that the sets in MAME are very likely incorrect.<\/p>\n<p><a href=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1866\" src=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_1.jpg\" alt=\"623xx_1\" width=\"800\" height=\"562\" srcset=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_1.jpg 800w, https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_1-300x211.jpg 300w, https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_1-768x540.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>As I went to dump this one, I came across the HN62312 chips.\u00a0 These are 2mbit MASK ROMs which follow a completely alien pinout to other devices, in fact it took a while to find pinouts at all.<\/p>\n<p>Well I&#8217;ve designed an adapter, the first version is pictured below &#8211; I made a mistake and a ZIF socket won&#8217;t fit so the design linked to (which I&#8217;m having some of made now) has now been updated.\u00a0 It should also work for the 4mbit variants but I don&#8217;t actually have one to test with.<\/p>\n<p><a href=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1867\" src=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_2.jpg\" alt=\"623xx_2\" width=\"800\" height=\"764\" srcset=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_2.jpg 800w, https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_2-300x287.jpg 300w, https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_2-768x733.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>You can buy these from OSH Park now, all you need are pin strips and optionally a ZIF socket:<\/p>\n<p><a href=\"https:\/\/oshpark.com\/shared_projects\/4UiwXoPl\">HN62312 \/ HN62304 adapter at OSH Park<\/a><\/p>\n<p>Happy dumping!<\/p>\n<p><strong>Update<\/strong>:\u00a0 here&#8217;s the new variant.<\/p>\n<p><a href=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1878\" src=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_3.jpg\" alt=\"623xx_3\" width=\"800\" height=\"818\" srcset=\"https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_3.jpg 800w, https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_3-293x300.jpg 293w, https:\/\/blog.system11.org\/wp-content\/uploads\/2016\/02\/623xx_3-768x785.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I recently ended up buying a Jaleco Lord Of King (Astyanax) PCB, which also came with a P-47 ROM board &#8211; or maybe it was the other way around.\u00a0 When I looked at it and my existing P-47, and the other Japanese P-47 type I realised that the sets in MAME are very likely incorrect. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":50,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,13],"tags":[],"class_list":["post-1865","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arcade","category-tech"],"_links":{"self":[{"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/posts\/1865"}],"collection":[{"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.system11.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1865"}],"version-history":[{"count":4,"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/posts\/1865\/revisions"}],"predecessor-version":[{"id":1880,"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/posts\/1865\/revisions\/1880"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.system11.org\/index.php?rest_route=\/wp\/v2\/media\/50"}],"wp:attachment":[{"href":"https:\/\/blog.system11.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.system11.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.system11.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}