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Where can I get prototyping boards that fit Apple II Slots?

April 26, 2017Apple fit ii prototyping slots

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Where can I get prototyping boards that fit Apple II Slots?

2 Answers

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The standard Apple II Slot card has 50 contacts, 25 per side, and is up to 2.75″ high (not counting contacts). Contact spacing is 0.10″. Length varies. About 0.50″ of the length can extend beyond the contacts toward the back of the computer. You may be able to find an ‘Apple II prototyping board’ from a surplus parts seller; however, these boards are no longer a standard item. To get a new board, you will probably have to get a PC ISA-8 (“PC XT”) Slot board (or an ISA-8/16 Slot board with the extra contact strip trimmed off). An ISA-8 board has 31 contacts per side spaced the same as an A2 card. From the edge facing the front of the computer, you will need to count down and trim away 6 contacts (per side). It’s best to use a real A2 board as a guide to determine pin centering and to decide what to slice off for a good fit in an Apple II Slot. A Dremel tool with a sand wheel is good for this sort of slicing. The best deal I’ve found on proto boards for Apple II Slot card projects is the

0

Posted

The standard Apple II Slot card has 50 contacts, 25 per side, and is up to 2.75″ high (not counting contacts). Contact spacing is 0.10″. Length varies. About 0.50″ of the length can extend beyond the contacts toward the back of the computer. You may be able to find an ‘Apple II prototyping board’ from a surplus parts seller; however, these boards are no longer a standard item. To get a new board, you will probably have to get a PC ISA-8 (“PC XT”) Slot board (or an ISA-8/16 Slot board with the extra contacts trimmed off). An ISA-8 board has 31 contacts per side spaced the same as an A2 card. From the edge facing the front of the computer, you will need to count down and trim away 6 contacts (per side). It’s best to use a real A2 board as a guide to determine pin centering and to decide what to slice off for a good fit in an Apple II Slot. A Dremel tool with a sand wheel is good for this sort of slicing. The best deal I’ve found on proto boards for Apple II Slot card projects is the 9003