Add-on card edge fingers for mock S-100 boards
Greetings, I've been making basic design plans for my 8080- based homebrew computer. I want to build the system using the S-100 standard so that I could potentially add on commercially-built boards later. I've decided on wire-wrap board construction since the connections are solid and resistant to damage or corrosion. Plus it just looks so damn cool! I figure I can use plain perfboard to make the cards, but I need some way of grafting card-edge fingers onto the board and wrap them into the circuit, allowing me to connect to card to a standard S-100 backplane. Is there a premade part in existence to accomplish this, of will this be a project in and of itself? Thanks Everyone! Joe Giliberti
On Mon, 10 Jan 2022, Joseph Giliberti via vcf-midatlantic wrote:
I've been making basic design plans for my 8080- based homebrew computer.
I want to build the system using the S-100 standard so that I could potentially add on commercially-built boards later.
I've decided on wire-wrap board construction since the connections are solid and resistant to damage or corrosion. Plus it just looks so damn cool!
I figure I can use plain perfboard to make the cards, but I need some way of grafting card-edge fingers onto the board and wrap them into the circuit, allowing me to connect to card to a standard S-100 backplane. Is there a premade part in existence to accomplish this, of will this be a project in and of itself?
Joe: You might want to obtain some S-100 prototyping boards, such as this one: http://q7.neurotica.com/Oldtech/S100/Vector8800V-L.jpg Modern versions are discussed, here: http://www.s100computers.com/My%20System%20Pages/Prototype%20Board/Prototype... Mike Loewen mloewen@cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/
As Mike suggested, just use proper prototyping boards. The difference in cost is minimal, especially if you troll eBay and such looking for NOS/lightly used Vector boards. They will also hold up a *lot* better than a homebrew solution. If there aren't any for reasonable money available right now, email me directly and I'll dig one up for you! Thanks, Jonathan ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Monday, January 10th, 2022 at 17:51, Mike Loewen via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> wrote:
On Mon, 10 Jan 2022, Joseph Giliberti via vcf-midatlantic wrote:
I've been making basic design plans for my 8080- based homebrew computer.
I want to build the system using the S-100 standard so that I could
potentially add on commercially-built boards later.
I've decided on wire-wrap board construction since the connections are
solid and resistant to damage or corrosion. Plus it just looks so damn
cool!
I figure I can use plain perfboard to make the cards, but I need some way
of grafting card-edge fingers onto the board and wrap them into the
circuit, allowing me to connect to card to a standard S-100 backplane.
Is there a premade part in existence to accomplish this, of will this be a
project in and of itself?
Joe:
You might want to obtain some S-100 prototyping boards, such as this one:
http://q7.neurotica.com/Oldtech/S100/Vector8800V-L.jpg
Modern versions are discussed, here:
http://www.s100computers.com/My System Pages/Prototype Board/Prototype Board.htm
Mike Loewen mloewen@cpumagic.scol.pa.us
Old Technology http://q7.neurotica.com/Oldtech/
Hi Joe, John Monahan at the s100computers.com website has produced a buffered prototype board and I believe it was Josh Bensadon that tried to maximize the plated through hole area in another design. John’s design can be seen here http://www.s100computers.com/My%20System%20Pages/Prototype%20Board/Prototype... I don’t have a picture of Josh’s board but both boards show in inventory and can be ordered through Todd Goodman. The inventory is shown at the link below after scrolling down to the S-100 section. Todd’s contact info is located near the bottom of page. https://www.retrobrewcomputers.org/doku.php?id=boardinventory Regards, Jeff
On Mon, 10 Jan 2022, Joseph Giliberti via vcf-midatlantic wrote:
I've been making basic design plans for my 8080- based homebrew computer.
I want to build the system using the S-100 standard so that I could
potentially add on commercially-built boards later.
I've decided on wire-wrap board construction since the connections are
solid and resistant to damage or corrosion. Plus it just looks so damn
cool!
I figure I can use plain perfboard to make the cards, but I need some way
of grafting card-edge fingers onto the board and wrap them into the
circuit, allowing me to connect to card to a standard S-100 backplane.
Is there a premade part in existence to accomplish this, of will this be a
project in and of itself?
Joe:
https://www.retrobrewcomputers.org/doku.php?id=boardinventory
Their boards are high-quality modern production with proper hard gold edge plating, I've ordered several for myself, and built up a number for other hobbyists. We use the same board house as they do for boards with hard gold plating. Thanks, Jonathan
participants (4)
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Jeff Galinat -
Jonathan Chapman -
Joseph Giliberti -
Mike Loewen