From c768d4001ebf0f81ee1ad30c21ee91880999f42e Mon Sep 17 00:00:00 2001 From: TheRealBolle <83338060+TheRealBolle@users.noreply.github.com> Date: Wed, 17 Nov 2021 11:44:44 +0100 Subject: [PATCH] Update README.md --- README.md | 64 +++++++++++++++++++++++++++---------------------------- 1 file changed, 32 insertions(+), 32 deletions(-) diff --git a/README.md b/README.md index 5a70bf9..c9e4fe7 100644 --- a/README.md +++ b/README.md @@ -1,42 +1,42 @@ # Macintosh SE/30 Logicboard recreation - -This is a recreation of the Macintosh SE/30 logicboard. -It is not a 1:1 copy of the original logicboard but instead the original schematics were used to completely redesign and route a lookalike board. - + +This is a recreation of the Macintosh SE/30 logicboard. +It is not a 1:1 copy of the original logicboard but instead the original schematics were used to completely redesign and route a lookalike board. + ![fully populated board](/Logicboard_populated.jpg) - -The provided logicboard files are licensed under CC-BY-NC-SA - they are NOT intended for commercial use. - - - + +The provided logicboard files are licensed under CC-BY-NC-SA - they are NOT intended for commercial use. + + + # Reverse engineered PALs - + The original PALs have been reverse-engineered and equations were rewritten to match the behaviour of the originals - the provided JEDEC files are not dumps of the content of the original chips. The provided JEDEC files are intended to be used with a 16V8-type device (GAL16V8, PALCE16V8, ATF16V8) as a replacement -for the video, clock and RAM-signalling PALs. Certain low power ATF16V8B don't work. ATF16V8C use pinkeepers instead of internal pullups and might be problematic as well. - -Board locations and original part number reference: - -UI6 341-0665-A -UH7 341S0689-C -UG6 341-0747-A -UG7 341-0746-A -UE6 341-0754-A -UE7 341-0755-A - - - +for the video, clock and RAM-signalling PALs. Certain low power ATF16V8B don't work. ATF16V8C use pinkeepers instead of internal pullups and might be problematic as well. + +Board locations and original part number reference: + +UI6 341-0665-A +UH7 341S0689-C +UG6 341-0747-A +UG7 341-0746-A +UE6 341-0754-A +UE7 341-0755-A + + + # Board Files - -The provided gerber files have been generated using the JLCPCB EAGLE cam job files. -Pick and place data is intended to be used with JLCPCB as well. -Other manufacturers might have different requirements to the gerbers. - - - + +The provided gerber files have been generated using the JLCPCB EAGLE cam job files. +Pick and place data is intended to be used with JLCPCB as well. +Other manufacturers might have different requirements to the gerbers. + + + # BOM - -A BOM is available at: + +A BOM is available at: https://docs.google.com/spreadsheets/d/1CAzGjHxQaQrduQC-hQ8sB2I6Y56fUlCWdJMCUDho0NE