pinouts for Q*bert (Gottlieb, 1982)
submitted by David Shuman (shu@caltech.edu, essayes@telerama.LM.com)

MLB = Main Logic Board
SB = Sound Board
-- = No Connection

Main Logic Board (MA-378)
60-contact edge connector (A1P1)

A	+5 VDC			1	GND
B	+5 VDC			2	GND
C	+5 VDC			3	GND (COIN RETURN)
D	--			4	--
E	COIN 1 (OPTIONAL)	5	COIN LOCKOUT (OPTIONAL)
F	COIN METER		6	KNOCKER*
H	--			7	--
J	--			8	--
K	--			9	--
L	--			10	--
M	A6P1-2 (SB)		11	--
N	--			12	A6P1-4 (SB)
P	--			13	--
R	SELECT TEST SW**	14	GND
S	COIN SW #2		15	STEP TEST SW***
T	COIN SW #1		16	1P START
U	--			17	2P START
V	--			18	UP-LEFT
W	--			19	DOWN-RIGHT
X	--			20	DOWN-LEFT
Y	UP-RIGHT		21	--
Z	A6P1-8 (SB)		22	A6P1-9 (SB)
a	A6P1-11 (SB)		23	A6P1-12 (SB)
b	VERT. SYNC		24	RED
c	--			25	BLUE
d	VIDEO GND		26	GREEN
e	HORIZ. SYNC		27	+11.5 VDC
f	+5 VDC			28	GND
h	+5 VDC			29	GND
j	+5 VDC			30	GND

*connects to one end of the knocker solenoid, which is wired in parallel 
with a 1N4004 diode.  The other end of the solenoid connects to +30 VDC, 
which also provides power to the audio amp.
**closed = game; open = test.
***normally open.

Sound/Speech Assembly (MA-216)
24-contact edge connector (A6P1), only one side of board has contacts.

A	--				1	+12 VDC REG.
B	--				2	A1P1-M (MLB)
C	--				3	-12 VDC
D	--				4	A1P1-12 (MLB)
E	--				5	+5 VDC
F	--				6	GND
H	--				7	AUDIO OUTPUT
J	--				8	A1P1-Z (MLB)
K	--				9	A1P1-22 (MLB)
L	--				10	+30 VDC REG.
M	--				11	A1P1-a (MLB)
N	--				12	A1P1-23 (MLB)n.