https://github.com/codesqueak/prom_programmer

PROM Programmer for 74S188 PROM's and other like devices
https://github.com/codesqueak/prom_programmer

Last synced: 2 months ago
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PROM Programmer for 74S188 PROM's and other like devices

• Host: GitHub
• URL: https://github.com/codesqueak/prom_programmer
• Owner: codesqueak
• Created: 2025-03-22T16:37:15.000Z (3 months ago)
• Default Branch: main
• Last Pushed: 2025-03-22T17:05:41.000Z (3 months ago)
• Last Synced: 2025-03-22T17:35:53.720Z (3 months ago)
• Size: 0 Bytes
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# PROM Programmer and Editor

PROM programmere for the following 32 x 8 PROM's

* National  74S188

* Fujitsu   7111

* Signetics 82S23

* AMD       27S18

* MMI       6330

* TI        18SA30

* Harris    7602

## Introduction

This board has been designed to allow the programming and editing of the above PROM's

* Programming timings as per the manufacturers recommendations

* All components are readily available from commercial component suppliers (..and eBay!)

*	Copious test points

* Full documentation

For full documentation, see the [pdf here](PROM_Programmer.pdf)

 ![Timings](scope.png)

* Yellow = Program Power (Vcc) (10v)

* Pink = Program Pulse (16v)

* Cyan = Chip Enable (CE) (5v)

Supply power is first applied (10v), then the programming voltage applied (16v), followed by the CE low to perform the programming step.

 ![PCB From JLCPCB](pcb.png)

 ![Built PCB](built_pcb.png)