Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-21 05:08:54 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

(MESS) Update Victor 9000 keyboard diagram [Lord Nightmare]

Browse Source
This commit is contained in:
Lord-Nightmare 2014-12-10 13:53:56 -05:00
parent cf79302b9f
commit 1adc6c4807
1 changed files with 22 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
src/mess/machine/victor9kb.c
View File

@ -11,33 +11,35 @@
/*
PCB Layout
Keyboard PCB Layout
----------
A65-02307-201D
Marking on PCB back: A65-02307-201D 007
|-----------------------------------------------------------------------|
| 22-008-03 22-050-3B 8021 74LS14 CN1|
| ?MHz |
| |
| |
| |
| |
| |
| |
| |
| |
| |
|-----------------------------------------------------------------------|
|------------------------------------------------------------------------------------=
| 22-908-03 22-950-3B . XTAL 8021 74LS14 [804x] [EPROM] [???] CN1=___
| X X X X X X X X X X X |
| X X X X X X X X X X X X X X X X X X X X X |
| X X X X X X X X X X X X X X X X X X X X X |
| X X X X X X X X X X X X X X X X X X X X X |
| X X X X X X X X X X X X X X X X X X X X |
| X X marking X X X X X X X X |
|----------------------------------------------------------------------------------------|
Notes:
All IC's shown.
XTAL - 3.579545Mhz Crystal, marked "48-300-010" (front) and "3.579545Mhz" (back)
8021 - Intel 8021 MCU, marked: "iP8021 2137 // 8227 // 20-8021-139 // (C) INTEL 77"
22-908-03 - Exar Semiconductor XR22-008-03 keyboard matrix capacitive readout latch
22-950-3B - Exar Semiconductor XR22-050-3B keyboard matrix row driver with 4 to 12 decoder/demultiplexer
CN1 - keyboard data connector (SIP, 7 pins, right angle)
8021 - Intel 8021 "70-8021-130?"
22-008-03 - Exar Semiconductor XR22-008-03 keyboard matrix capacitive readout latch
22-050-3B - Exar Semiconductor XR22-050-3B keyboard matrix row driver with 4 to 12 decoder/demultiplexer
CN1 - keyboard data connector
[804x] - unpopulated space for a 40 pin 804x or 803x MCU
[EPROM] - unpopulated space for an EPROM, if a ROMless 803x MCU was used
[???] - unpopulated space for an unknown NDIP10 IC or DIP-switch array
X - capacitive sensor pad for one key
marking - PCB trace marking: "KTC // A65-02307-007 // PCB 201 D"
*/
#include "victor9kb.h"