Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revision |
| boards:ecb:dma:changes [2022/09/25 18:40] – Revision from 2022-09-25 | boards:ecb:dma:changes [2026/06/15 12:49] (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=boards:ecb:dma:changes | Original URL : https://retrobrewcomputers.org/doku.php?id=boards:ecb:dma:changes |
| Snapshot date: 2022-09-25 | Snapshot date: 2023-02-04 |
| Generator : wayback-archiver | Generator : wayback-archiver |
| */ | */ |
| This is the first version of the circuit that was release but not built. | This is the first version of the circuit that was release but not built. |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01-sch.pdf|ECB-DMA-R01-sch.pdf]] | [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01-sch.pdf|ECB-DMA-R01-sch.pdf]] |
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| Here is the first version of the PCB: | Here is the first version of the PCB: |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01-brd.pdf|ECB-DMA-R01-brd.pdf]] | [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01-brd.pdf|ECB-DMA-R01-brd.pdf]] |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=46876e&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/boards/ecb/dma/ecb-dma-r01.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/boards/ecb/dma/ecb-dma-r01.jpg?300x164|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_boards_ecb_dma_ecb-dma-r01.jpg}}]] | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=46876e&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/boards/ecb/dma/ecb-dma-r01.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/boards/ecb/dma/ecb-dma-r01.jpg?300x164|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_boards_ecb_dma_ecb-dma-r01.jpg}}]] |
| The first reinvented board based on Wolfgang's original circuit. An activity light was added with selectable jumper for device selection or DMA activity monitoring and trouble shooting. The activity light circuit was taken directly from Wolfgang's Ramfloppy design. | The first reinvented board based on Wolfgang's original circuit. An activity light was added with selectable jumper for device selection or DMA activity monitoring and trouble shooting. The activity light circuit was taken directly from Wolfgang's Ramfloppy design. |
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| R01A gerbers are [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01a-gerbers.zip|here]]. | R01A gerbers are [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01a-gerbers.zip|here]]. |
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| R01A Kicad files are [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01a.zip|here.]] | R01A Kicad files are [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:dma:ecb-dma-r01a.zip|here.]] |
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| Errata : The output of U6b pin 6 must be inverted before pin 1 of U10. i.e. the direction signal is incorrect. Updated in version 001B | Errata : The output of U6b pin 6 must be inverted before pin 1 of U10. i.e. the direction signal is incorrect. Updated in version 001B |
