Lots of changes! Takes us to rom S

[uccvend-snackrom.git] / doc / memorymap

diff --git a/doc/memorymap b/doc/memorymap
index e445a4d..86ef2f2 100644 (file)
--- a/doc/memorymap
+++ b/doc/memorymap
@@ -1,10 +1,7 @@
-From [email protected] Fri Sep 14 20:28:08 2001
-Date: Sat, 8 Sep 2001 12:22:39 +0800
-From: Simon Fryer <[email protected]>
-To: Mark Tearle <[email protected]>
 Subject: [Vending Machine Memory Map]
 
 ----- Forwarded message from Simon Fryer <[email protected]> -----
+Date: Sat, 8 Sep 2001 12:22:39 +0800
 
 Evening
 
@@ -53,12 +50,90 @@ Also, to get a HC11 assembler and a working EPROM writer.
 See Ya
 Simon
 
--- 
-------------------------------------------------------------------------
-"Well, an engineer is not concerned with the truth; that is left to 
-philosophers and theologians: the prime concern of an engineer is 
-the utility of the final product."  
-Lectures on the Electrical Properties of Materials, L.Solymar, D.Walsh
+----- End forwarded message -----
 
 
------ End forwarded message -----
+
+From vend.asm:
+
+
+
+;0006   slot number
+
+;Rows are numbered 1-9, skipping 5.  There is no row 5.
+;2800   home sensors
+;       7  row 9
+;       6  row 8
+;       5  row 7
+;       4  row 6
+;       3  row 4
+;       2  row 3
+;       1  row 2
+;       0  row 1
+;Motor driver data is sent cols 7, 6, 5, 4, 3, 2, 1, 0 rows 9, 8, 7, 6,
+4, 3, 2
+;1.  Cols 8 and 9 are separate outputs (they ran out of driver chip
+outputs).
+;Motor driver column output enable is PA6
+;Motor driver serial clock is PA5
+;It looks like motor overcurrent sense is on PE1 (PE1 will be low if a
+motor
+;is drawing too much current)
+;3000   misc outputs
+;       7  motor driver serial data
+;       6  col 9 motor driver
+;       5  col 8 motor driver
+;       4  display connector
+;       3  display connector
+;       2  not used
+;       1  note acceptor connector
+;       0  note acceptor connector
+;3800   changer outputs
+;       7  /ACCEPT
+;       6  /SEND
+;       5  RESET
+;       4  /$.05
+;       3  /$.10
+;       2  /$.25
+;       1  /$1.00
+;       0  motor driver row output enable
+;PA5 selects between RS232 and current loop serial interface?
+
+
+
+
+
+
+Simon's comments say this:
+0x3800 to 0x3FFF - U14. 74HC374 - 8 * D type flip flops. Here the data bits
+       are latched and taken off to various devices. (read serial I/O by 
+       toggling data lines). 
+       D0, D1 - Bill Valadator
+       D2, D3 - Display - D2 is data, D3 is clock (I think)
+       D4, D5, D6 - Snack Motors. D4 is data for the row decoder. D5, D6
+               form part of the column decoders as far as I can tell. 
+0x3000 to 0x37FF - U13. 74HC374. For the changer - dispenses change and/or
+               counts change I think. Just latches data to the device. 
+
+John's say this:
+;3000   misc outputs
+;       7  motor driver serial data
+;       6  col 9 motor driver
+;       5  col 8 motor driver
+;       4  display connector
+;       3  display connector
+;       2  not used
+;       1  note acceptor connector
+;       0  note acceptor connector
+;3800   changer outputs
+;       7  /ACCEPT
+;       6  /SEND
+;       5  RESET
+;       4  /$.05
+;       3  /$.10
+;       2  /$.25
+;       1  /$1.00
+;       0  motor driver row output enable
+;
+
+which is correct?