Lady Bug
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Display
Type: raster Vertical
Resolution: 240 x 192
Refresh: 60.11 Hz
Processors
Zilog Z80 @ 4 MHz
Audio
SN76489 @ 4 MHz
SN76489 @ 4 MHz
Channels: 1
Controls
Players: 2
Coin slots: 2
joy, 4-way
joy, 4-way
Components (from manual)
UB106 Sound Generator · U7 · Sound generation circuit
74LS04 Logic · Various · Hex inverter
74LS08 Logic · Various · Quad AND gate
74LS32 Logic · Various · Quad OR gate
74LS74 Logic · Various · Dual D flip-flop
74LS138 Logic · Various · 3-to-8 decoder
74LS157 Logic · Various · Quad 2-to-1 multiplexer
74LS174 Logic · Various · Hex D flip-flop
74LS245 Logic · Various · Octal bus transceiver
74LS273 Logic · Various · Octal D flip-flop
2114 Memory · Various · 1K x 4 SRAM
2732 ROM · Various · 4K EPROM
AA004 Custom · Various · Custom video/sprite processor
AA003 Custom · Various · Custom video/sprite processor
AA002 Custom · Various · Custom video/sprite processor
AA001 Custom · Various · Custom video/sprite processor
LM324 Audio Amplifier · Various · Quad op-amp for audio
PCBs (from manual)
Main Block Diagram 8110
Main game board schematic
Main game board schematic
DIP Switch Settings
Data from MAME. On later hardware, game settings are typically in the Test/Service Menu, not DIP switches. Learn more
| Switch | Setting | Options | Default |
|---|---|---|---|
| SWA(J2):8, SWA(J2):7 | Difficulty | SWA(J2):8 SWA(J2):7OFF OFF Easy ✱ON OFF MediumOFF ON HardON ON Hardest | Easy |
| SWA(J2):6 | High Score Names | ON 3 LettersOFF 10 Letters ✱ | 10 Letters |
| SWA(J2):5 | Rack Test (Cheat) | OFF Off ✱ON On | Off |
| SWA(J2):4 | Freeze | OFF Off ✱ON On | Off |
| SWA(J2):3 | Cabinet | ON Upright ✱OFF Cocktail | Upright |
| SWA(J2):2 | Free Play | OFF No ✱ON Yes | No |
| SWA(J2):1 | Lives | OFF 3 ✱ON 5 | 3 |
| SWB(K2):8, SWB(K2):7, SWB(K2):6, SWB(K2):5 | Coin B | SWB(K2):8 SWB(K2):7 SWB(K2):6 SWB(K2):5ON OFF OFF ON 4 Coins/1 CreditON ON ON OFF 3 Coins/1 CreditON OFF ON OFF 2 Coins/1 CreditOFF OFF OFF ON 3 Coins/2 CreditsOFF OFF OFF OFF 1 Coin/1 Credit ✱OFF ON ON OFF 3 Coins/4 CreditsON OFF OFF OFF 1 Coin/2 CreditsOFF ON OFF OFF 1 Coin/3 CreditsON ON OFF OFF 1 Coin/4 CreditsOFF OFF ON OFF 1 Coin/5 Credits | 1 Coin/1 Credit |
| SWB(K2):4, SWB(K2):3, SWB(K2):2, SWB(K2):1 | Coin A | SWB(K2):4 SWB(K2):3 SWB(K2):2 SWB(K2):1ON OFF OFF ON 4 Coins/1 CreditON ON ON OFF 3 Coins/1 CreditON OFF ON OFF 2 Coins/1 CreditOFF OFF OFF ON 3 Coins/2 CreditsOFF OFF OFF OFF 1 Coin/1 Credit ✱OFF ON ON OFF 3 Coins/4 CreditsON OFF OFF OFF 1 Coin/2 CreditsOFF ON OFF OFF 1 Coin/3 CreditsON ON OFF OFF 1 Coin/4 CreditsOFF OFF ON OFF 1 Coin/5 Credits | 1 Coin/1 Credit |