M-4

Midway · 1977 · raster Horizontal · 2P · joy · m4

Display

Type: raster Horizontal

Resolution: 260 x 224

Refresh: 59.54 Hz

Intel 8080 @ 1.997 MHz

Samples

Channels: 1

Players: 2

Coin slots: 1

joy, vertical2-way, 2 buttons

7404 Logic · Hex inverter

7408 Logic · Quad 2-input AND gate

7432 Logic · Quad 2-input OR gate

7474 Logic · Dual D flip-flop

74LS00 Logic · Quad 2-input NAND gate

74LS04 Logic · Hex inverter

74LS08 Logic · Quad 2-input AND gate

74LS32 Logic · Quad 2-input OR gate

74LS74 Logic · Dual D flip-flop

74LS138 Logic · 3-to-8 line decoder

74LS139 Logic · Dual 2-to-4 line decoder

74LS157 Logic · Quad 2-input multiplexer

74LS244 Logic · Octal buffer/line driver

74LS245 Logic · Octal bus transceiver

Game Logic A084-90700-D626
Main game logic board

Power Supply Board P.C. 0080-00904F
Contains voltage control pots preset at factory

Game Logic Board P.C. A084-90700-C626
Contains amplifier volume control pots marked Right Ampl. and Left Ampl.

Control Handle Assembly 626 M-4
Control interface assembly

Mother Board P.C.0380-09806
Main motherboard

Game Logic Board P.C.A094-90700-6626
Game logic board

Data from MAME. On later hardware, game settings are typically in the Test/Service Menu, not DIP switches. Learn more

Switch	Setting	Options	Default
C1:1, C1:2	Coinage	C1:1 C1:2ON OFF 2 Coins per PlayerOFF OFF 2 Coins/1 or 2 PlayersON ON 1 Coin per Player ✱OFF ON 1 Coin/1 or 2 Players	1 Coin per Player
C1:3, C1:4	Game Time	C1:3 C1:4ON ON 60 secondsOFF ON 70 seconds ✱ON OFF 80 secondsOFF OFF 90 seconds	70 seconds
C1:5	Service Mode	OFF Off ✱ON On	Off
C1:6	Extended Play	OFF OffON On ✱	On
C1:8, C1:7	Extended Play At	C1:8 C1:7OFF OFF 70OFF ON 80ON OFF 100ON ON 110 ✱	110