| name | sourcefile | sampleof | isbios | isdevice | ismechanical | runnable | description | year | manufacturer | romof | cloneof | MachineGenreId |
| zero | midway/williams.cpp | | no | no | no | yes | Zero (bootleg of Defender, set 1) | 1980 | bootleg (Jeutel) | defender | defender | Shooter / Flying Horizontal |
|
rom
| name | size | crc | sha1 | region | offset | status | optional | merge | bios |
| zero-15 | 4096 | 706a24bd | 60cef3d4f7204eff42de2c08244863e83bc842b4 | maincpu | 0 | good | no | | |
| zero-16 | 4096 | a79213b2 | ff9a59cb1d28af396a7b93df82a4bb825581bcce | maincpu | 1000 | good | no | | |
| zero-17 | 4096 | 25287eca | ec81181a5a0ac2adf7c0dabbec638f886c13e6ec | maincpu | 2000 | good | no | | |
| zero-21 | 4096 | 7ca35cfd | 9afa4f6641082f73bfc3e2b800acf82dcc2bafb3 | banked | 0 | good | no | | |
| zero-20 | 4096 | 0757967f | 445e399f1fc834a9333549440171beb6e19a24a7 | banked | 1000 | good | no | | |
| zero-19 | 4096 | f2bef850 | 78e50c790e3a8ebc4b65f2d827be8bd375bf4ef4 | banked | 2000 | good | no | | |
| zero-18 | 4096 | e99d5679 | b4344a32aed6cc64284661c03993a59718289c82 | banked | 6000 | good | no | | |
| video_sound_rom_1.ic12 | 2048 | fefd5b48 | ceb0d18483f0691978c604db94417e6941ad7ff2 | soundcpu | f800 | good | no | video_sound_rom_1.ic12 | |
|
chip
| type | tag | name | clock |
| cpu | maincpu | Motorola MC6809E | 1000000 |
| cpu | soundcpu | Motorola MC6808 | 3579545 |
| audio | speaker | Speaker | |
| audio | dac | MC1408 DAC | |
|
control
| type | player | buttons | ways | reverse | minimum | maximum | sensitivity | keydelta | ways2 | ways3 | reqbuttons |
| joy | | 5 | vertical2 | no | | | | | | | |
|
device_ref
| name |
| mc6809e |
| m6808 |
| nvram |
| timer |
| timer |
| watchdog |
| screen |
| palette |
| speaker |
| mc1408 |
| ipt_merge_any_hi |
| ipt_merge_any_hi |
| pia6821 |
| pia6821 |
| pia6821 |
|
display
| tag | type | rotate | width | height | refresh | pixclock | htotal | hbend | hbstart | vtotal | vbend | vbstart | flipx |
| screen | raster | 0 | 292 | 240 | 60.096154 | 8000000 | 512 | 12 | 304 | 260 | 7 | 247 | no |
|
driver
| status | emulation | savestate | requiresartwork | unofficial | nosoundhardware | incomplete | cocktail |
| good | good | supported | no | no | no | no | |
|
input
| players | coins | service | tilt |
| 1 | 3 | yes | yes |
|
port
|
sound
|