Apple-2-HW/Brain-Board-II
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@ -8,10 +8,14 @@ The Brain Board II is a slot card for the Apple II, II+, and IIe computers. It a
The original documentation for the card can be found on Mike Willegal's site: http://www.willegal.net/appleii/brainboard.htm
The BOM on page BB:3 should be appended from the original design as follows:
Include one more 10K resistor. (5 in total)
The 6 non-polarized capacitors shown on this page should be .1uf, not .01uf.
Lastly, it is imperative to use a 27C512 or SST 27SF512 with this design in place of the 27c256 EPROM.
Normal operation is the same if you follow the quick start guide from the original Brain Board manual. bb-v5_1.pdf is provided in this repository, but for convenience, these are the 2 most common settings.
SETTING 1: QUICK START
@ -50,4 +54,4 @@ BrainBoard_512_Beta_4.zip - Osmond Project, can be opened in the open source pro
CO.512.SuperBrain_Board AppleSoftInteger.BIN - Burn to a 27C512 or SST 27SF512 ROM. Contains the ROM necessary for both of the above configurations (SETTING 1, SETTING 2).
Other files found here are either copies of Mikes original code/design to keep it together under GPL, and the original photos/documentation of the ROM mod by Macnoyd from which this hardware revision was derived.
Other files found here are copies of Mikes original code/design to keep it together under GPL, and the original photos/documentation of the ROM mod by Macnoyd from which this hardware revision was derived.