Differences

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

--- azonenberg:ess:es1988uj [2014/04/09 18:44] – created azonenberg
+++ azonenberg:ess:es1988uj [2025/08/04 21:24] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 {{tag>collection_az vendor_ess year_1999 type_analog type_analog/audio foundry_unknown tech_unknown}}
-ESS ES1989S Allegro motherboard sound controller. Looks like 350 nm 3-metal or so and appears to be the same process as the [[azonenberg:siliconimage:sil164|Silicon Image SII164]] although so far it's not known which fab this is.
+ESS ES1989S Allegro motherboard sound controller.
+Looks like 350 nm 3-metal or so and appears to be the same process as the [[azonenberg:siliconimage:sil164|Silicon Image SII164]] although so far it's not known which fab this is.
+The number for [[https://www.google.com/patents/US4214125|a 1977 patent on speech synthesis]] is marked on the top of the package.
 ====== Package ======
-{{:azonenberg:ess:dscf5062_cropped.jpg?600|}}
+{{:azonenberg:ess:dscf5062_cropped.jpg?300|}}
+Markings:
+    (ESS logo)
+    Allegro (TM)
+    ES1989S L510
+    TSU28883S
+    (P)4,214,125 (C)
 ====== Die ======