This page describes a EPROM programmer that is designed to operate on a SYM-1 computer.  this board is named 2716/2532 Board because it will program either of these memory types.  Each chip type has its own programming software.

The hardware is built on a Radio Shack project board catalog number 276-154.  Here is a  photo of the completed board.  The schematic shows the wiring diagram of the board.  Note that one of the onboard buffer transistors is wired as shown on the SYM.  This could be moved onto the programmer board rather than use the  buffer transistor on the SYM.

This board was designed originally to program 2716 EPROM's and later software was written to allow 2532 types to be programmed as well.  My original 2716 design was published in EDN magazine September 2, 1981 page 259 "Simple programmer handles 2716 EPROM's, Dallas Shell, Rockwell International.

Here is the source code for programming 2532 EPROM's.  Here is the object code in SYM paper tape format that is loaded into memory and executed to program the 2532.

Here is the source code for programming 2716 EPROM's.  Here is the object code in SYM paper tape format that is loaded into memory and executed to program the 2716.