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--- builderpages:plasmo:cpldtil [2024/11/06 20:09] – Revision from 2024-11-06
+++ builderpages:plasmo:cpldtil [2026/06/15 13:05] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+/* 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.
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=7ff4c1&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/cpldtil/dsc_50821106.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/cpldtil/dsc_50821106.jpg?600x421|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_cpldtil_dsc_50821106.jpg}}]]
+===== Features =====
+RC2014 compatible
+digits with individual 0603 LEDs
+Programmable functionalities with EPM7128S
+user definable programmable I/O
+Operate with 22MHz Z80
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=e6c8e9&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/cpldtil/dsc_50801106.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/cpldtil/dsc_50801106.jpg?600x401|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 =====
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:cpldtil:cpldtil_r2_scm_1.pdf|Schematic]]
+PC board [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:cpldtil:cpldtil_r2.zip|photoplots]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:cpldtil:cpldtil_cpld_release_11_6_19.zip|CPLD equations]]