From: Ben Harris <bjh21@bjh21.me.uk>
Date: Wed, 1 Jan 2025 23:54:11 +0000 (+0000)
Subject: Signal names for SN74S262 pins, from RML 380Z service manual
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Signal names for SN74S262 pins, from RML 380Z service manual
---

diff --git a/NOTES b/NOTES
index 53895ec..bee0690 100644
--- a/NOTES
+++ b/NOTES
@@ -291,12 +291,26 @@ available for emulators.
 
 Also some real screenshots; e.g. https://www.youtube.com/watch?v=Jy6tQsyd4ho
 
-I haven't found a datasheet for the SN74S262/3, but the schematic in the
-ABC80 service manual provides a pinout:
-
-4-7: row address 0-3
-8,9,11-13: data 0-4
-16-19,1-3: character address 0-6
-20: Vcc
+I haven't found a datasheet for the SN74S262/3, but the schematics in the
+ABC80 and RML 380Z service manuals provides a pinout:
+
+1: D4
+2: D5
+3: D6
+4: RA (row address)
+5: RB
+6: RC
+7: RD
+8: Y1 (output)
+9: Y2
 10: Gnd
-14,15: "two chip enables" (Gnd on ABC80)
+11: Y3
+12: Y4
+13: Y5
+14: CS*
+15: CS*
+16: D0 (character address)
+17: D1
+18: D2
+19: D3
+20: Vcc