{"id":698,"date":"2018-05-07T03:54:27","date_gmt":"2018-05-07T03:54:27","guid":{"rendered":"https:\/\/www.vintagevibe.co.nzwww.vintagevibe.co.nz192.168.1.162\/?p=698"},"modified":"2025-07-27T21:53:14","modified_gmt":"2025-07-27T21:53:14","slug":"the-multicomp-cyclone-ii-c","status":"publish","type":"post","link":"https:\/\/www.vintagevibe.co.nz\/?p=698","title":{"rendered":"The Multicomp Cyclone II-C"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;6px|||||&#8221;][et_pb_row _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; min_height=&#8221;739.4px&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221;][et_pb_text _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221;]<\/p>\n<p>The Multicomp Cyclone II-C (v1.10) is a motherboard which provides peripheral connectivity for a Cyclone II FPGA development board commonly available on eBay. The board was designed \u201cby committee\u201d in the retrobrewcomputers forum during December 2015, with James Moxham doing all the actual work (schematic capture and PCB layout). One of the prime motivators for this board was to fit a 10cmx10cm footprint because the manufacturing cost of PCBs of this size is particularly attractive. It provides connectivity for the following peripherals: (v1.10) is a motherboard which provides peripheral connectivity for a Cyclone II FPGA development board commonly available on eBay. The board was designed \u201cby committee\u201d in the retrobrewcomputers forum during December 2015, with James Moxham doing all the actual work (schematic capture and PCB layout). One of the prime motivators for this board was to fit a 10cmx10cm footprint because the manufacturing cost of PCBs of this size is particularly attractive. It provides connectivity for the following peripherals:<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li class=\"level1\">\n<div class=\"li\">VGA Screen with PS\/2 Keyboard interface<\/div>\n<\/li>\n<li class=\"level1 node\">\n<div class=\"li\">Two RS-232 serial ports:<\/div>\n<ul>\n<li class=\"level2\">\n<div class=\"li\">Serial A uses on-board level-shifter and DE-9F connector\u00a0<em>or<\/em>\u00a0external level shifter via 6-pin connector<\/div>\n<\/li>\n<li class=\"level2\">\n<div class=\"li\">Serial B uses external level shifter via 6-pin connector<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">SD Card connector<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">Two RAM sockets to support up to 1\u00a0<abbr title=\"Megabyte\">MB<\/abbr>\u00a0of RAM.<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">5-pin connector for external DS1302 real-time clock and backup coin cell<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">3V3 or 5V power option for PS\/2 Keyboard, with voltage clamp diodes.<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">3 LEDs<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">RCA Video connector<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">Jumpers for reset and for boot control<\/div>\n<\/li>\n<li class=\"level1\">\n<div class=\"li\">Debug\/Expansion headers for data bus and uncommitted FPGA pins<\/div>\n<\/li>\n<\/ul>\n<p>Due to the header installation on the Cyclone II module, the module is required to be mounted inverted onto the motherboard.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;2px|||||&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221;][et_pb_image src=&#8221;https:\/\/www.vintagevibe.co.nz\/wp-content\/uploads\/2025\/04\/multicomp-3.jpg&#8221; title_text=&#8221;multicomp-3&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243;]<\/p>\n<p style=\"text-align: center;\"><span>On the SD Card is CP\/M3 and CP\/M 2.2c<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221;][et_pb_image src=&#8221;https:\/\/www.vintagevibe.co.nz\/wp-content\/uploads\/2025\/04\/multicomp-2.jpg&#8221; title_text=&#8221;multicomp-2&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243;][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;6px|||||&#8221;][et_pb_row _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221; min_height=&#8221;739.4px&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221;][et_pb_text _builder_version=&#8221;4.5.3&#8243; _module_preset=&#8221;default&#8221;] The Multicomp Cyclone II-C (v1.10) is a motherboard which provides peripheral connectivity for a Cyclone II FPGA development board commonly available on eBay. The board was designed \u201cby committee\u201d in the retrobrewcomputers forum during December 2015, with James Moxham doing all the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":701,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-698","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-single-board-computers"],"_links":{"self":[{"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/698","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=698"}],"version-history":[{"count":6,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/698\/revisions"}],"predecessor-version":[{"id":1814,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/698\/revisions\/1814"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=\/wp\/v2\/media\/701"}],"wp:attachment":[{"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vintagevibe.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}