Gradius (Bubble System)
Game Information
| manufacturer | Konami |
| year | 1985 |
| genre | Shoot-'Em-Up |
| downloads | 185 |
Screenshots
Download Details
| split set | gradiusb.zip 112.93k |
| bios/device | bubsys.zip 7.76k ↗ |
| merged set | gradiusb.7z 99.11k |
| standalone set | gradiusb.7z 106.18k |
Driver Details
| source | konami/nemesis.cpp |
| status | preliminary |
| emulation | good |
| savestate | unsupported |
| type | protection |
| status | imperfect |
Series Details
Screen Details
| display | screen |
| type | raster |
| orientation | horizontal |
| width | 256px |
| height | 224px |
| refresh | 60.61mhz |
Input Details
| player | 1 |
| type | joy |
| buttons | 3 |
| directions | 8 |
| player | 2 |
| type | joy |
| buttons | 3 |
| directions | 8 |
Chipset Details
| name | Motorola MC68000 |
| clock | 8.79mhz |
| name | Zilog Z80 |
| clock | 1.71mhz |
| name | Speaker |
| clock | N/A |
| name | AY-3-8910A PSG |
| clock | 1.71mhz |
| name | AY-3-8910A PSG |
| clock | 1.71mhz |
| name | RC Filter |
| clock | N/A |
| name | RC Filter |
| clock | N/A |
| name | RC Filter |
| clock | N/A |
| name | RC Filter |
| clock | N/A |
| name | Konami 005289 SCC |
| clock | 3.41mhz |
| name | Sanyo VLM5030 |
| clock | 3.41mhz |
ROM Details
| name | size | crc |
|---|---|---|
| boot.bin | 480.00b | f0774fc2 |
| gradius.bin | 288.84k | f83b9607 |
| mcu | 4.00k | nodump |
| 400b03.8g | 8.00k | 85c2afc5 |
| 400a1.2b | 256.00b | 5827b1e8 |
| 400a2.1b | 256.00b | 2f44f970 |