This is an old revision of the document!


/* Imported from Wayback Machine

 Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:cpldtil
 Snapshot date: 2025-11-12
 Generator    : wayback-archiver

*/

CPLDTIL, 6-digit LED display

Introduction

CPLDTIL is a RC2014-compatible 6-digit LED display; each digit is made of 20 individual 0603 LEDs.

www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_cpldtil_dsc_50821106.jpg

Features

RC2014 compatible

6 digits with individual 0603 LEDs

Programmable functionalities with EPM7128S

5 user definable programmable I/O

Operate with 22MHz Z80

www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_cpldtil_dsc_50801106.jpg

Function

The CPLDTIL is driven by an Altera EPM7128S which is in-situ programmable. Current firmware allocate I/O locations 0xE8 to first two digits; location 0xE9 to the middle two digits, and location 0xEA to last 2 digits.

Design Information

builderpages/plasmo/cpldtil.1762943895.txt.gz · Last modified: (external edit)
CC Attribution-Share Alike 4.0 International
Driven by DokuWiki Recent changes RSS feed Valid CSS Valid XHTML 1.0