/* Imported from Wayback Machine Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:oc65:oc65home:oc65r0 Snapshot date: 2025-12-08 Generator : wayback-archiver */ ==== Table of Contents ==== [[#oc65_rev0_prototype_overclocked_6502|OC65 Rev0, Prototype overclocked 6502]] [[#introduction|Introduction]] [[#design_information|Design Information]] [[#software|Software]] [[#additional_pictures|Additional Pictures]] ====== OC65 Rev0, Prototype overclocked 6502 ====== ===== Introduction ===== It was previously established that CRC65 can operate reliably to 29.5MHz. This prototype based on CRC65 design furthur push the speed limit. This is achieved with faster RAM, buffered clock, reduce wire length with stacked IC, and faster DOM disk. Discussion about this prototype can be found [[http://forum.6502.org/viewtopic.php?f=4&t=7433|here]]. [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=1fa58f&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/dsc_71451215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=600&h=342&tok=2b744f&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Fdsc_71451215.jpg?600x342|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_dsc_71451215.jpg}}]] ===== Design Information ===== [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:oc65:oc65home:oc65_idecpld_scm.pdf|Schematic]] [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:oc65:oc65home:oc65r0_prototype_cpld_36mhz.zip|CPLD design file]] ==== Software ==== Install [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:oc65:oc65home:newdos65v3_dom_36mhz_oc65r0_prototype.zip|DOS65 distribution software]] in new DOM disk. Include monitor software. unzip the file into c:\teraterm\oc65 directory and run TeraTerm macro script file: newDOS65CF_v3_36M_fast.ttl. ===== Additional Pictures ===== [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=8b75c8&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71331214.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=237&tok=e2d8b2&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71331214.jpg?300x237|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71331214.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=a6d904&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71351215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=251&tok=47723d&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71351215.jpg?300x251|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71351215.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=161e88&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/w65c02_partially_installed.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=249&tok=bba71b&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fw65c02_partially_installed.jpg?300x249|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_w65c02_partially_installed.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=3c0e82&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71491215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=200&tok=27b892&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71491215.jpg?300x200|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71491215.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=1dc3fa&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71501215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=126&tok=e30ca5&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71501215.jpg?300x126|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71501215.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=acf56f&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71481215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=160&tok=3a4b5a&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71481215.jpg?300x160|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71481215.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=c982b9&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71471215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=200&tok=19a99e&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71471215.jpg?300x200|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71471215.jpg}}]] [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=526266&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/dsc_71461215.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=200&tok=9dd134&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2Fdsc_71461215.jpg?300x200|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_oc65_oc65home_dsc_71461215.jpg}}]] Animated GIF of 36MHz W65C02 booting into DOS/65 and run ASCIIART benchmark [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=d710f1&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/oc65/oc65home/36mhz_6502_boot_dos_65_run_asciiart_benchmark.gif|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=300&h=266&tok=423efd&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Foc65%2Foc65home%2F36mhz_6502_boot_dos_65_run_asciiart_benchmark.gif?300x266}}]]