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| builderpages:plasmo:ovrclk65 [2024/01/15 10:37] – Revision from 2024-01-15 | builderpages:plasmo:ovrclk65 [2026/06/15 13:09] (current) – external edit 127.0.0.1 |
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| /* Imported from Wayback Machine | /* Imported from Wayback Machine |
| Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:ovrclk65 | Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:ovrclk65 |
| Snapshot date: 2024-01-15 | Snapshot date: 2024-11-09 |
| Generator : wayback-archiver | Generator : wayback-archiver |
| */ | */ |
| ===== Introduction ===== | ===== Introduction ===== |
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| While WDC's [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:w65c02s.pdf|W65C02]] and [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:w65c816s.pdf|W65C816]] are rated at 14MHz, it is well known that they can operate at much higher clock. This is especially true since the design have been ported to smaller 0.6u technology. OVRCLK65 is simple 65xx design centered around a CPLD to check out the upper speed limit of W65Cxx CPU. Discussions about OVRCLK65 can be found [[http://forum.6502.org/viewtopic.php?f=4&t=6695|here]]. | While WDC's [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:w65c02s.pdf|W65C02]] and [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:w65c816s.pdf|W65C816]] are rated at 14MHz, it is well known that they can operate at much higher clock. This is especially true since the design have been ported to smaller 0.6u technology. OVRCLK65 is simple 65xx design centered around a CPLD to check out the upper speed limit of W65Cxx CPU. Discussions about OVRCLK65 can be found [[http://forum.6502.org/viewtopic.php?f=4&t=6695|here]]. |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=ff4ca1&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fovrclk65%2Fdsc_66070721.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/ovrclk65/dsc_66070721.jpg?600x486|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_ovrclk65_dsc_66070721.jpg}}]] | [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=ff4ca1&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fovrclk65%2Fdsc_66070721.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/ovrclk65/dsc_66070721.jpg?600x486|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_ovrclk65_dsc_66070721.jpg}}]] |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=166215&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fovrclk65%2Fdsc_66060718.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/ovrclk65/dsc_66060718.jpg?500x377|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_ovrclk65_dsc_66060718.jpg}}]] | [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=166215&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fovrclk65%2Fdsc_66060718.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/ovrclk65/dsc_66060718.jpg?500x377|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_ovrclk65_dsc_66060718.jpg}}]] |
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| ===== Features ===== | ===== Features ===== |
| ===== Design Files for W65C02 ===== | ===== Design Files for W65C02 ===== |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:ovrclk65_scm.pdf|Schematic]]. | [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:ovrclk65_scm.pdf|Schematic]]. |
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| CPLD [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:ovrclk65_w65c02_working_33mhz.zip|design files]] in Altera Quartus. CPLD design is in schematic form. This [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:overclock_65xx_cpld_schematic.pdf|link]] is a PDF of the schematic. | CPLD [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:ovrclk65_w65c02_working_33mhz.zip|design files]] in Altera Quartus. CPLD design is in schematic form. This [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:ovrclk65:overclock_65xx_cpld_schematic.pdf|link]] is a PDF of the schematic. |
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