I, Robot
--------

Pinout for "I, Robot" CPU board connector (P20)
	A	GND
	1	GND
	Z	GND
	22	-Sense
	B	+5V
	2	+5V
	Y	+5V out
	21	+Sense
	3
	X	Joystick X
	4	Reset from switching power supply
	W
	E	+10.3V unregulated
	18	+10.3V unregulated
	C
	D
	F	Led player 2
	H	Coin counter right
	J	Joystick Y
	K
	L	Coin right
	M	Test
	N
	P
	R
	S
	T	Fire 1
	U	Start player 2
	V	Reset out
	5
	6	Led player 1
	7	Coin counter left
	8	Audio 1
	9	Audio 2
	10 	Coin left
	11	Aux. coin
	12
	13
	14
	15
	16
	17	Start player 1
	19
	20
	
Pinout for "I, Robot" video board connector (P19)
	A	Ground
	B	+5V
	C
	D
	E
	F
	H	Video ground
	J
	K
	L
	M
	N
	P
	R	+5V
	S	Ground
	1	Ground
	2	+5V
	3	V sync
	4	H sync
	5	Red
	6	Green
	7	Blue
	8	V int (interrupt?)
	9	- Composite sync
	10
	11
	12
	13
	14
	15

Additional information:
10.3 V / 15.5 V ???
Looking at the power supply schematic, there is a 15.5V signal
generated, that goes to pin E on connector P20.  The voltage
also goes to pin 9 on the 'control panel' connector (P24).  However,
if you look at the CPU pinout (above), pin E is mentioned as using
10.3V unregulated.  I from what I see, I suppose that anything
between 10.3V and 15.5V should work.  I know many switching power
supplies that you can buy come with +-12V output, maybe you can use
this.

Audio 1 / Audio 2
The CPU PCB has two audio outputs (pins 8 and 9) that connect
to the switching power supply in the following way:
     CPU PCB        Switching power supply
     Audio 1 (pin 8) - L audio (pin 1)
     Audio 2 (pin 9) - L audio GND (pin 2)
The power supply has two additional outputs that connect to
the speaker/volume control
     power supply
     L speaker + (pin 3) - 'utility panel' pin 2
     L speaker - (pin 4) - 'utility panel' pin 1
                             speaker +
I am not 100% sure where the Audio 1/2 signal is amplified.  All
I can tell is that the audio output from the CPU goes into the
power supply, and two other audio lines go from the power supply to
the volume knob / speakers.


DIP SW. 5E
----------       1   2   3   4   5   6   7   8
-------------------------------------------------------------------------------
 Mode            -                                      Demo Mode On
                 +                                      Demo Mode Off
 Difficulty          -                                  Normal
                     +                                  Easy
 Player                  -   -                          5
                         +   -                          4
                         -   +                          3
                         +   +                          2
 Bonus                           -   -                  30000
                                 +   -                  None
                                 -   +                  50000
                                 +   +                  20000
 Game Time                               -              90 Sec. on Level 1
                                         +              3 Lives
 Language                                    -          German
                                             +          English


DIP SW. 3J
----------       1   2   3   4   5   6   7   8
-------------------------------------------------------------------------------
 Bonus Coin      +   +   +                              No Bonus
                 +   +   -                              2 Units/1 Credit
                 -   +   -                              3 Units/1 Credit
                 +   -   +                              4 Units/1 Credit
                 -   +   +                              5 Units/1 Credit
                 +   -   -                              5 Units/2 Credit
                 -   -   +                              No Bonus 
                 -   -   -                              Free Play
 Left Coin                   -                          1 Coin Unit 2 Credit
                             +                          1 Coin Unit 1 Credit
 Right Coin                      +   +                  1 Coin /1 Coin Unit
                                 +   -                  1 Coin /4 Coin Unit
                                 -   +                  1 Coin /5 Coin Unit
                                 -   -                  1 Coin /6 Coin Unit
 Coins per Credit                        +   +          1 Coin /1 Credit
                                         +   -          2 Coin /1 Credit
                                         -   +          3 Coin /1 Credit
                                         -   -          4 Coin /1 Credit




-----------------------------------------------------------------------
    If it really was the truth, why are faces filled
        with anger that should only shine with youth?   - Big Country
-----------------------------------------------------------------------
John P. Manfreda                     Robert Bosch Corporation
Applications/Software Engineer       38000 Hills Tech Drive
(810) 553-1371                       Farmington Hills, MI 48331-3417
           -- jmanfred@fh.us.bosch.com or Frito@msn.com --