Barrier
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Display
Type: vector Vertical
Refresh: 38 Hz
Processors
Cinematronics CPU @ 4.981 MHz
Audio
Barrier Sound Board
Netlist Sound Device
Channels: 1
Controls
Players: 2
Coin slots: 1
joy, 4-way
joy, 4-way
Components (from manual)
T1 Transformer · High voltage transformer for oscillator
U10 DAC · Digital to analog converter
U11 DAC · Digital to analog converter
7815 Voltage Regulator · 15V regulator
7915 Voltage Regulator · -15V regulator
CR30 Diode · Rectifier diode
4K ROMS ROM · 2x 8x4K ROMS with two pages each, 1 even chip, 1 odd chip
74LS163 Counter · 4-bit binary counter S11, R11 and P11
74LS377 Register · Data latch register
74LS194 Register · Dual latch register
74LS158 Data Selector · Multiplexer device G14
H12 Register · Working storage address selector register
J12 Register · 4-bit register
L12 Register · 4-bit register
74LS157 Data Selector · Data selector circuitry N11, M11 and L11
T13 Instruction Register · Provides instructions in nibbles (4-bits of 8-bit word)
S13 Data Register · Provides data from program memory
N6 ALU · Arithmetic Logic Unit device
M6 ALU · Arithmetic Logic Unit device
L6 ALU · Arithmetic Logic Unit device
CLR Counter · Line length counter, clears to zero and counts at clock rate
Q20 Transistor · High and normal intensity transistor driver
Q21 Transistor · High and normal intensity transistor driver
Q22 Transistor · Current path control transistor
Q24 Transistor · Switching transistor
7406 Hex Inverter · Hex inverter turning on transistor Q22
PCBs (from manual)
Logic Board
Contains display electronics and digital vector generator
Contains display electronics and digital vector generator
Monitor Board
Contains all monitor electronics on single PCB
Contains all monitor electronics on single PCB
Program Memory PCB
Temporary PCB for PROM devices, remote from logic PCB
Temporary PCB for PROM devices, remote from logic PCB
DIP Switch Settings
Data from MAME. On later hardware, game settings are typically in the Test/Service Menu, not DIP switches. Learn more
Physical switch positions not available for this machine in MAME. Check the service manual below for DIP switch details.
| Setting | Options | Default |
|---|---|---|
| Lives | 3 ✱5 | 3 |
| Demo Sounds | OffOn ✱ | On |
| Unknown | Off ✱On | Off |
| Unknown | Off ✱On | Off |
| Unknown | Off ✱On | Off |
| Unknown | Off ✱On | Off |
| Unknown | Off ✱On | Off |