Gradius (Bubble System)
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Display
Type: raster Horizontal
Resolution: 256 x 224
Refresh: 60.61 Hz
Processors
Motorola MC68000 @ 9.216 MHz
Zilog Z80 @ 1.79 MHz
Audio
AY-3-8910A PSG @ 1.79 MHz
AY-3-8910A PSG @ 1.79 MHz
RC Filter
RC Filter
RC Filter
RC Filter
Konami 005289 SCC @ 3.58 MHz
Sanyo VLM5030 @ 3.58 MHz
Channels: 1
Controls
Players: 2
Coin slots: 2
joy, 8-way, 3 buttons
joy, 8-way, 3 buttons
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 |
|---|---|---|---|
| SW1:1, SW1:2, SW1:3, SW1:4 | Coin A | SW1:1 SW1:2 SW1:3 SW1:4ON OFF ON ON 4 Coins/1 CreditOFF ON OFF ON 3 Coins/1 CreditON ON ON OFF 2 Coins/1 CreditON ON OFF ON 3 Coins/2 CreditsOFF ON ON ON 4 Coins/3 CreditsOFF OFF OFF OFF 1 Coin/1 Credit ✱OFF OFF ON ON 4 Coins/5 CreditsOFF OFF OFF ON 3 Coins/4 CreditsON OFF OFF OFF 1 Coin/2 CreditsON OFF OFF ON 2 Coins/5 CreditsOFF ON OFF OFF 1 Coin/3 CreditsON ON OFF OFF 1 Coin/4 CreditsOFF OFF ON OFF 1 Coin/5 CreditsON OFF ON OFF 1 Coin/6 CreditsOFF ON ON OFF 1 Coin/7 CreditsON ON ON ON Free Play | 1 Coin/1 Credit |
| SW1:5, SW1:6, SW1:7, SW1:8 | Coin B | SW1:5 SW1:6 SW1:7 SW1:8ON OFF ON ON 4 Coins/1 CreditOFF ON OFF ON 3 Coins/1 CreditON ON ON OFF 2 Coins/1 CreditON ON OFF ON 3 Coins/2 CreditsOFF ON ON ON 4 Coins/3 CreditsOFF OFF OFF OFF 1 Coin/1 Credit ✱OFF OFF ON ON 4 Coins/5 CreditsOFF OFF OFF ON 3 Coins/4 CreditsON OFF OFF OFF 1 Coin/2 CreditsON OFF OFF ON 2 Coins/5 CreditsOFF ON OFF OFF 1 Coin/3 CreditsON ON OFF OFF 1 Coin/4 CreditsOFF OFF ON OFF 1 Coin/5 CreditsON OFF ON OFF 1 Coin/6 CreditsOFF ON ON OFF 1 Coin/7 CreditsON ON ON ON None | 1 Coin/1 Credit |
| SW2:1, SW2:2 | Lives | SW2:1 SW2:2OFF OFF 3 ✱ON OFF 4OFF ON 5ON ON 7 | 3 |
| SW2:3 | Cabinet | ON Upright ✱OFF Cocktail | Upright |
| SW2:4, SW2:5 | Bonus Life | SW2:4 SW2:5OFF OFF 20k and every 70kON OFF 30k and every 80k ✱OFF ON 20k onlyON ON 30k only | 30k and every 80k |
| SW2:6, SW2:7 | Difficulty | SW2:6 SW2:7OFF OFF EasyON OFF Normal ✱OFF ON HardON ON Hardest | Normal |
| SW2:8 | Demo Sounds | OFF OffON On ✱ | On |
| SW3:1 | Flip Screen | OFF Off ✱ON On | Off |
| SW3:2 | Upright Controls | OFF Single ✱ON Dual | Single |
| SW3:3 | Service Mode | OFF Off ✱ON On | Off |