Star Tech Journal

11
STAR*TECH JOURNAL/JULY 1982
Self Test/Bookkeeping
The bookkeeping steps 1 thru 15 are the same for "Caveman" as all
previous games. The diagnostic tests steps 16 thru 20 are similar but
include improvements (part of the System BOA changes). The lamp test
( step 16) now identifies each lamp as it is turned on in the third and fourth
players' score display and the status display. The solenoid test(step 17)
now includes a sound test and a method of checking the dip switch
settings on the control board. The self test on the sound/speech board is
less complicated than on previous games. Depressing the test switch will
initiate all speech patterns and various game sounds. For a detailed
description of self test and bookkeeping, see the "Caveman" Game
Manual. For more information on the Gottlieb pinball system, see the
New System Preview on "Haunted House", Star*Tech Journal, April
'82 (Volume 4, Number 2).
Game Power Distribution
See Diagram 1.
The system power distribution is fairly similar to that of any System
80 pinball game. Obvious additions to accommodate the video game
system are present. They include an added lOvac tap for the video card
cage power and a 120vac tap for the TV monitor.
Fuses
Fl
F2
F3
F4
F5
F6
F7
F8
F9
FlO
Cabinet Fuses
Destination
Sound/Speech Power Supply
Power Supply
Displays
Solenoids
Controlled Lamps
Playboard Illumination
Card Cage Assembly
Sound/Speech Power Supply
Primary Power
Monitor
DIAGRAM 1
Value
.5 amp
5 amp SB
.25 amp SB
8 amp SB
6.25 amp SB
7.5 amp
5 amp SB
1 amp SB
5 amp SB
2 amp SB
Video System
The video system for "Caveman" is a multi-board card rack system built
around the Intel 8086 micro processor. Unlike the processors used in
most games, Z80, 8080, 6502, and 6800, which are all 8-bit processors,
the 8086 is a 16-bit processor, the first 16-bit processor used in the
amusement industry.
Boards/Hardware
There are six boards contained in the "Caveman" card rack. Unlike the
card rack system in Midway's "Gort"' or "Wizard ofWor'', these boards
must be placed in a specific order in the cage.
These boards include, from bottom to top:
1. l/0 RAM Board - Receives information from driver board, com-
municates to control board.
2. E Prom Board - Program proms, all game instructions.
3. CPU Board - Master controller for all read/write functions, ROM
and RAM memory accessing, 1/0 communications and bus manipu-
lations to control all operations.
4. Video 1 - Home of CRT controller, generates vertical and horizontal
sync, controls video memory lines, memory accessing, and sequencing
of memory and data.
5. Video 3 - ROM memory for video output including color.
6. Video 2 - Digital video converted to analog color video information,
output jack for connection to monitor.
The hardware used in the card rack system is built around 8000 series
chips. They include:
8086 - Intel 16-bit microprocessor
825 9 - Interrupt controller
8282 - 8-bit latch
8284 - clock, reset and ready generator
Additional ICs include:
D2732A-3 - E Proms (program)
MC6845 - CRT controller
2016P-2 - Color RAMs
1 Ovacffi-+12vdc
PINBALLNIDEO SYSTEM POWER
+Svdc
REG.
VIDEO
CARD
CAGE
3vac
a;
Line
Voltage
§
.E..-
rJ)
5vac
Control Driver
Reset
Pop Bumper
Boards
4 and 7
Digit Displays
12vac
C:
~
I-
10vacill---+12vdc
Pinball
Power
Supply
Sound/Speech
Power Supply
60vac
Solenoids
28vacill---+24vdc
NOTES
1. +5 volt regulator for video cage is
an LAS1905.
2. Both transformers are NEW.
1. 8-21727
2. C-21728
3. BR1 thru BR4 are BR252 or equiv.
4. 6800 MFD 25V capacitors are
connected from ground to outputs
of BR1 and BR2.
5. 3vac and 5vac ride on +5vdc and
+Bvdc (not shown) centertaps
eminating from pinball power
supply.
a;
E
.E C\I
rJ)
General
Illumination
Lamps
6.3vac
C:
~
I-
8vac-m----+6vdc
1 20vac Isolated
'
/
Controlled
Lamps
1
Monitor
+60vdc
+42vdc
+Svdc
-12vdc
+12vdc
+30vdc
Sound/
Speech
Board