| name | sourcefile | sampleof | isbios | isdevice | ismechanical | runnable | description | year | manufacturer | romof | cloneof | MachineGenreId |
| mayday | midway/williams.cpp | | no | no | no | yes | Mayday (set 1) | 1980 | Hoei | | | Shooter / Flying Horizontal |
|
rom
| name | size | crc | sha1 | region | offset | status | optional | merge | bios |
| ic03-3.bin | 4096 | a1ff6e62 | c3c60ce94c6bdc4b07e45f386eff9a4aa4816953 | maincpu | d000 | good | no | | |
| ic02-2.bin | 4096 | 62183aea | 3843fe055ab6d3bb5a3362f57a63ce99e36cec47 | maincpu | e000 | good | no | | |
| ic01-1.bin | 4096 | 5dcb113f | c41d671c336c68824771b7c4f0ffce39f1b6cd62 | maincpu | f000 | good | no | | |
| ic04-4.bin | 4096 | ea6a4ec8 | eaedc11968d88fd6f3c5b40c8d15d64ca6d0a1ab | maincpu | 10000 | good | no | | |
| ic05-5.bin | 4096 | 0d797a3e | 289d2ecfebd7d71430d6624f3c9fbc91f9ef05cc | maincpu | 11000 | good | no | | |
| ic06-6.bin | 4096 | ee8bfcd6 | f68c44fdc18d57070aea604e261fb7b9407345a2 | maincpu | 12000 | good | no | | |
| ic07-7d.bin | 4096 | d9c065e7 | ceeb58d1dfe14106271f17cf1c689b812216c3c0 | maincpu | 16000 | good | no | | |
| ic28-8.bin | 2048 | fefd5b48 | ceb0d18483f0691978c604db94417e6941ad7ff2 | soundcpu | f800 | good | no | | |
|
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 | | 3 | 5 (half8) | 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 |
| address_map_bank |
|
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 |
| preliminary | good | supported | no | no | no | no | |
|
feature
| type | status | overall |
| protection | imperfect | |
|
input
| players | coins | service | tilt |
| 1 | 2 | yes | no |
|
port
|
sound
|