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(MESS) Victor 9000 Keyboard: add more diagrams and connection lists for the various IC and cable connections [Lord Nightmare]

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Lord-Nightmare 2014-12-11 04:15:08 -05:00
parent 5fdef925ef
commit 43d0984689
1 changed files with 138 additions and 11 deletions
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src/mess/machine/victor9kb.c
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@ -16,8 +16,8 @@ Keyboard PCB Layout
Marking on PCB back: A65-02307-201D 007
|------------------------------------------------------------------------------------=
| 22-908-03 22-950-3B . XTAL 8021 74LS14 [804x] [EPROM] [???] CN1=___
|------------------------------------------------------------------------------------|
| 22-908-03 22-950-3B XTAL 8021 74LS14 [804x] [EPROM] [???] L 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 |
@ -29,11 +29,13 @@ Marking on PCB back: A65-02307-201D 007
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)
XTAL - 3.579545Mhz Crystal, marked "48-300-010" (front of xtal) and "3.579545Mhz" (back of xtal)
74LS14 - Z4 - 74LS14 Hex inverter with Schmitt-trigger inputs (0.8v hysteresis)
8021 - Z3 - Intel 8021 MCU, marked: "P8021 2137 // 8227 // 20-8021-139 // (C) INTEL 77"
22-908-03 - Z2 - Exar Semiconductor XR22-008-03 keyboard matrix capacitive readout latch
22-950-3B - Z1 - Exar Semiconductor XR22-050-3B keyboard matrix row driver with 4 to 12 decoder/demultiplexer
CN1 or J1 - J1 - keyboard data connector (SIP, 7 pins, right angle)
L - L1 & L2 - mil-spec 22uH 10% inductors (double wide silver band(mil spec), red(2) red(2) black(x1uH) silver(10%))
[804x] - unpopulated space for a 40 pin 804x or 803x MCU
[EPROM] - unpopulated space for an EPROM, if a ROMless 803x MCU was used
@ -41,16 +43,141 @@ Notes:
X - capacitive sensor pad for one key
marking - PCB trace marking: "KTC // A65-02307-007 // PCB 201 D"
74LS14 (Hex inverter with Schmitt-trigger inputs (0.8v hysteresis))
------------------
__ __
1A 1 |* \_/ | 14 VCC
/1Y 2 | | 13 6A
2A 3 | | 12 /6Y
/2Y 4 | | 11 5A
3A 5 | 74LS14| 10 /5Y
/3Y 6 | | 9 4A
GND 7 |_______| 8 /4Y
P8021 Pinout
------------------
_____ _____
P22 1 |* \_/ | 28 VCC
P23 2 | | 27 P21
PROG 3 | | 26 P20
P00 4 | | 25 P17
P01 5 | P8021 | 24 P16
P02 6 | | 23 P15
P03 7 | | 22 P14
P04 8 | | 21 P13
P05 9 | | 20 P12
P06 10 | | 19 P11
P07 11 | | 18 P10
ALE 12 | | 17 RESET
T1 13 | | 16 XTAL 2
VSS 14 |_____________| 15 XTAL 1
XR22-008-03 Pinout (AKA XR22-908-03)
------------------
_____ _____
D0 1 |* \_/ | 20 Vcc
D1 2 | | 19 _CLR
D2 3 | | 18 Q0
D3 4 | | 17 Q1
HYS 5 | 22-008-03 | 16 Q2
D4 6 | | 15 Q3
D5 7 | | 14 Q4
D6 8 | | 13 Q5
D7 9 | | 12 Q6
GND 10 |_____________| 11 Q7
XR22-050-3B Pinout (AKA XR22-950-3B)
------------------
_____ _____
Y8 1 |* \_/ | 20 Vcc
Y9 2 | | 19 Y7
Y10 3 | | 18 Y6
Y11 4 | | 17 Y5
_STB 5 | 22-050-3B | 16 Y4
A0 6 | | 15 Y3
A1 7 | | 14 Y2
A2 8 | | 13 Y1
A3 9 | | 12 Y0
GND 10 |_____________| 11 OE?
i8021 to elsewhere connections
------------------------------
8021 pin - 22-xxx pin
P22 1 - 74LS14 pin 5 (3A) AND (804x chip pin 37, P26)
P23 2 - 74LS14 pin 11 (5A) AND (804x chip pin 38, P27)
PROG 3 - (804x chip pin 25, PROG)
P00 4 - N/C
P01 5 - N/C
P02 6 - N/C
P03 7 - N/C
P04 8 - N/C
P05 9 - N/C
P06 10 - N/C
P07 11 - N/C
ALE 12 - N/C
T1 13 - 74LS14 pin 2 (/1Y) AND (804x chip pin 39, T1)
VSS 14 - GND
XTAL1 15 - XTAL
XTAL2 16 - XTAL
RESET 17 - 10uf capacitor - VCC
P10 18 - 22-908 pin 18 (Q0) AND 22-950 pin 6 (A0) AND (804x chip pin 27, P10)
P11 19 - 22-908 pin 17 (Q1) AND 22-950 pin 7 (A1) AND (804x chip pin 28, P11)
P12 20 - 22-908 pin 16 (Q2) AND 22-950 pin 8 (A2) AND (804x chip pin 29, P12)
P13 21 - 22-908 pin 15 (Q3) AND 22-950 pin 9 (A3) AND (804x chip pin 30, P13)
P14 22 - 22-908 pin 14 (Q4) AND (804x chip pin 31, P14)
P15 23 - 22-908 pin 13 (Q5) AND (804x chip pin 32, P15)
P16 24 - 22-908 pin 12 (Q6) AND (804x chip pin 33, P16)
P17 25 - 22-908 pin 11 (Q7) AND (804x chip pin 34, P17)
P20 26 - 22-908 pin 19 (/CLR) AND 22-950 pin 5 (/STB) AND (804x chip pin 35, P24)
P21 27 - 74LS14 pin 9 (4A) AND (804x chip pin 36, P25)
VCC 28 - VCC
74LS14 to elsewhere connections
-------------------------------
1A 1 - 100 Ohm resistor - J1 pin 4
/1Y 2 - 8021 pin 13 (T1)
2A 3 - 74LS14 pin 8
/2Y 4 - 22uH 10% inductor 'L1' - J1 pin 5
3A 5 - 8021 pin 1 (P22)
/3Y 6 - many keyboard contact pads (!)
GND 7 - GND
/4Y 8 - 74LS14 pin 3
4A 9 - 8021 pin 27 (P21)
/5Y 10 - 74LS14 pin 13
5A 11 - 8021 pin 2 (P23)
/6Y 12 - 22uH 10% inductor 'L2' - J1 pin 6
6A 13 - 74LS14 pin 10
VCC 14 - VCC
J1 (aka CN1) connections:
-------------------------
1 - VCC
2 - GND
3 - GND
4 - 100 Ohm 5% resistor -> 74LS14 pin 1 -> inverted 74LS14 pin 2 -> inverted 8021 pin 13 (T1)
5 - 22uH 10% inductor 'L1' <- 74LS14 pin 4 <- inverted 74LS14 pin 3 <- inverted 74LS14 pin 8 <- 74LS14 pin 9 <- 8021 pin 27 (P21)
6 - 22uH 10% inductor 'L2' <- 74LS14 pin 12 <- inverted 74LS14 pin 13 <- inverted 74LS14 pin 10 <- 74LS14 pin 11 <- 8021 pin 2 (P23)
7 - VCC
Pins 5,and 6 also have a .0047uF capacitor to GND (forming some sort of LC filter)
There is another .0047uF capacitor to ground from the connection between 74LS14 pin 1 and the 100 Ohm 5% resistor which connects to pin 4 (forming some sort of RC filter)
22-950 pin 11 (OE?) - 68KOhm 5% resistor - 22-908 pin 5 (HYS)
Key Layout (USA Variant): (the S0x markings appear on the back of the PCB)
|------------------------------------------------------------------------------------=
| 22-908-03 22-950-3B . XTAL 8021 74LS14 [804x] [EPROM] [???] CN1=___
| 01 02 03 04 05 06 07 08 09 10 11 | <- the leftmost X is S01
|------------------------------------------------------------------------------------|
| 22-908-03 22-950-3B XTAL 8021 74LS14 [804x] [EPROM] [???] L CN1=___
| 01 02 03 04 05 06 07 08 09 10 11 |
| 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 |
| 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 |
| 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 |
| 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 |
| 95 96 marking 97 98 99 100 101 102 103 104| <- the rightmost X is S104
| 95 96 marking 97 98 99 100 101 102 103 104|
|----------------------------------------------------------------------------------------|
key - Shifted(top)/Unshifted(bottom)/Alt(front) (if no slashes in description assume key has just one symbol on it)