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| builderpages:plasmo:protorc3:frr512proto:frr512k [2023/01/31 06:00] – Initial import from Wayback Machine | builderpages:plasmo:protorc3:frr512proto:frr512k [2026/06/15 12:02] (current) – external edit 127.0.0.1 |
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| | /* Imported from Wayback Machine |
| | Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:protorc3:frr512proto:frr512k |
| | Snapshot date: 2023-01-31 |
| | Generator : wayback-archiver |
| | */ |
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| | ====== Frugal 512K RAM/ROM Prototype ====== |
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| | ===== Introduction ===== |
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| | This is [[builderpages:plasmo:frr512k:rev0|FRR512K]] prototyped on a ProtoRC3 board |
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| | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=f89deb&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/frr512proto/dsc_65450517.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/frr512proto/dsc_65450517.jpg?600x344|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protorc3_frr512proto_dsc_65450517.jpg}}]] |
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| | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=160388&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/frr512proto/dsc_65400516.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/frr512proto/dsc_65400516.jpg?500x411|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protorc3_frr512proto_dsc_65400516.jpg}}]] |
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| | ===== Features ===== |
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| | Low cost 32-macrocell CPLD |
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| | 512K EPROM based on SST39SF040 |
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| | 512K RAM based on AS6C4008 |
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| | Compact flash interface |
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| | I2C interface |
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| | Compatible with ROMWBW |
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| | ===== Design Information ===== |
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| | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protorc3:frr512proto:frr512proto_rev0_scm.pdf|Schematic]] |
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| | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protorc3:frr512proto:frr512k_proto_cpld.zip|CPLD design file]] |
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| | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protorc3:frr512proto:frr512kproto_cpld_scm_with_cf_i2c.pdf|PDF schematic]] of CPLD design |
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| | Engineering Changes |
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| | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=f0bcca&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fprotorc3%2Ffrr512proto%2Ffrr512kproto_wiring.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/frr512proto/frr512kproto_wiring.jpg?400x645|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protorc3_frr512proto_frr512kproto_wiring.jpg}}]] |
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