From 2c11215e1d086c095ba848a7665ee22b440e59bd Mon Sep 17 00:00:00 2001 From: Mark Tearle Date: Fri, 16 Nov 2001 10:21:00 +0000 Subject: [PATCH] Noted discrepiencies between john and simons notes --- doc/memorymap | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/doc/memorymap b/doc/memorymap index 3f8a9b3..86ef2f2 100644 --- a/doc/memorymap +++ b/doc/memorymap @@ -99,3 +99,41 @@ motor ; 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? -- 2.20.1