Mayo no 21
Game Information
| manufacturer | Chang Yu Electronic |
| year | 1989 |
| genre | N/A |
| downloads | 46 |
Screenshots
Download Details
| split set | changyu.zip 194.64k |
| merged set | changyu.7z 180.41k |
| standalone set | changyu.7z 180.41k |
Driver Details
| source | misc/changyu.cpp |
| status | preliminary |
| emulation | preliminary |
| savestate | unsupported |
| type | sound |
| status | unemulated |
Screen Details
| display | screen |
| type | raster |
| orientation | horizontal |
| width | 512px |
| height | 256px |
| refresh | 60mhz |
Input Details
| player | 1 |
| type | gambling |
| buttons | 13 |
| directions | N/A |
Chipset Details
| name | MOS Technology 6502 |
| clock | 1.91mhz |
| name | Intel 8751 |
| clock | 7.63mhz |
| name | Speaker |
| clock | N/A |
| name | AY-3-8910A PSG |
| clock | 1.91mhz |
| name | HC-55516 |
| clock | 1.91mhz |
ROM Details
| name | size | crc |
|---|---|---|
| 23h.u29 | 32.00k | df0a7417 |
| 15a.sub | 4.00k | c7c24394 |
| 5.u21 | 32.00k | 25b23b14 |
| 6.u20 | 32.00k | 35bcfdef |
| 7.u19 | 32.00k | ed69d69d |
| 8.u42 | 32.00k | 4013b219 |
| 1.u1 | 32.00k | 8d60cb76 |
| 2.u2 | 32.00k | b9d78664 |
| 3.u3 | 32.00k | 17cc6716 |
| 4.u4 | 32.00k | 31b76c13 |
| 14.u70 | 32.00k | cdfdfe11 |
| 9a.u74 | 64.00k | 12f3fd7a |
| 10a.u61 | 64.00k | 8869968b |
| 11a.u62 | 64.00k | d05e6348 |
| 63s281n.u48 | 256.00b | eb75e89b |
| 63s281n.u49 | 256.00b | 137e2d9c |
| 82s123.u44 | 32.00b | cbd7e5d4 |
| tibpal16l8-25cn.sub | 260.00b | nodump |