Differences

This shows you the differences between two versions of the page.

--- builderpages:gary_kaufman:jtag [2025/01/13 01:28] – Revision from 2025-01-13
+++ builderpages:gary_kaufman:jtag [2026/06/15 12:59] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+/* Imported from Wayback Machine
+   Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:gary_kaufman:jtag
+   Snapshot date: 2025-12-08
+   Generator    : wayback-archiver
+*/
+The S-100 V2 board uses an Atmel AT1508 CPLD, which can be programmed with the ATDH1150USB “cable” from Kanda
+https://www.kanda.com/products/Kanda/ATDH1150USB-K.html
+Unfortunately John uses a different programmer from Rockford, and has a 6 pin connector instead of the more standard JTAG-A.
+I made up a small adapter to simplify the connection.
+I included a small LED (use a 1K resistor) to indicate when the board is receiving power from the 80386 board.
+I couldn't locate a 2×3 pin IDC connector, so used a 2×5 pin connector. I use pins 5-10 and just let pins 1-4 dangle over the edge. This way it doesn't bump into the card ejector.
+Just be careful making sure you have pin 1 oriented correctly.
+I'd suggest you plug the adapter into the S-100 board first and make sure the LED lights up.
+The files are shared at OSHPARK: https://www.oshpark.com/shared_projects/DlGbC4Hr
+Or you can download the Gerber files here: [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:gary_kaufman:jtag.zip|jtag.zip]]
+Cost is $5.55 for 3 bare pc boards fabricated and shipped.
+[[http://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:gary_kaufman:images:rockwell_adapter.jpg|{{builderpages:gary_kaufman:images:rockwell_adapter.jpg?225x400}}]]
+----
+[[builderpages:gary_kaufman:start|Back to my main builder page]]