# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1475095361 -7200
# Node ID c8858c073383e7e87fab0060f79671ef84785d2e
# Parent  c4a05ef934c8a2fa178b00fff3e7f508cc0e7b86
Reordered sections and added the 74HC08 pinout.

diff -r c4a05ef934c8 -r c8858c073383 README.txt
--- a/README.txt	Tue Sep 27 00:36:33 2016 +0200
+++ b/README.txt	Wed Sep 28 22:42:41 2016 +0200
@@ -202,6 +202,20 @@
 Pin 31 for the Am29F010 would need to be asserted. Thus pin 30 might also be
 routed to pin 31, so that the device would remain read-only at all times.
 
+Pins
+----
+
+A0-A16      17-bit addressing
+DQ0-DQ7     8-bit data transfer
+CE#         chip enable
+OE#         output enable
+WE#         write enable
+VCC         5V
+VSS         ground
+NC          (not connected)
+
+
+
 Dual ROM Adapter Usage
 ======================
 
@@ -280,6 +294,17 @@
 pairs of sectors can be manually selected. A mechanism could also be devised
 to allow selection using logic, but this is not explored here.
 
+74HC08 Pinout
+-------------
+
+1A  1  \/  14 VCC
+1B  2      13 4B
+1Y  3      12 4A
+2A  4      11 4Y
+2B  5      10 3B
+2Y  6       9 3A
+GND 7       8 3Y
+
 
 
 Arduino Interfacing
@@ -303,20 +328,6 @@
 from the latch-based mechanism. As a result, only 14 pins are needed on the
 Arduino.
 
-74HC273 Pinout
---------------
-
-MR#  1  \/  20 VCC
-Q0   2      19 Q7
-D0   3      18 D7
-D1   4      17 D6
-Q1   5      16 Q6
-Q2   6      15 Q5
-D2   7      14 D5
-D3   8      13 D4
-Q3   9      12 Q4
-GND 10      11 CP
-
 Arduino     74HC273 #1  74HC273 #2  Am29F010
 -------     ----------  ----------  --------
 A5                                  CE#
@@ -353,6 +364,20 @@
 5V          VCC         VCC         VCC
 GND         GND         GND         VSS
 
+74HC273 Pinout
+--------------
+
+MR#  1  \/  20 VCC
+Q0   2      19 Q7
+D0   3      18 D7
+D1   4      17 D6
+Q1   5      16 Q6
+Q2   6      15 Q5
+D2   7      14 D5
+D3   8      13 D4
+Q3   9      12 Q4
+GND 10      11 CP
+
 Set Address
 -----------
 
@@ -392,18 +417,6 @@
 from the shift-register-based mechanism. As a result, only 15 pins are needed
 on the Arduino.
 
-74HC595 Pinout
---------------
-
-QB  1  \/  16 VCC
-QC  2      15 QA
-QD  3      14 SI
-QE  4      13 G#
-QF  5      12 RCK
-QG  6      11 SCK
-QH  7      10 SCLR#
-GND 8       9 QH'
-
 Arduino     74HC595#1       74HC595#2       Am29F010
 -------     ---------       ---------       --------
 A5                                          CE#
@@ -442,17 +455,17 @@
 GND         G#              G#
 GND         GND             GND             VSS
 
-Pins
-====
+74HC595 Pinout
+--------------
 
-A0-A16      17-bit addressing
-DQ0-DQ7     8-bit data transfer
-CE#         chip enable
-OE#         output enable
-WE#         write enable
-VCC         5V
-VSS         ground
-NC          (not connected)
+QB  1  \/  16 VCC
+QC  2      15 QA
+QD  3      14 SI
+QE  4      13 G#
+QF  5      12 RCK
+QG  6      11 SCK
+QH  7      10 SCLR#
+GND 8       9 QH'