| カテゴリ | 重要度 | ステータス | 解決状況 | 登録日時 | 最終更新 |
|---|---|---|---|---|---|
 サウンド | 最小 | 仮承認 | 未処理 | 2021-06-18 08:30 | 2022-10-21 09:26 |
| テスター | jkburks | 担当者 | ソース | galaxian/galaxian_rockclim.cpp | |
| バージョン | 0.232 | 発生バージョン | 修正バージョン | ||
| 修正コミット | プルリク | ||||
| フラグ | |||||
| セット | rockclim | ||||
| セット詳細 |
 rockclim - ロッククライマー | ||||
| 概 要 | Epson Melody ICのBGMが鳴っていない。 | ||||
| 詳 細 | Taito Rock Climber has unemulated BGM provided by Seiko EPSON 7910C Melody IC This is confirmed by hardware video and PCB photo (below) The video also confirms graphics and colors. This report should be linked to galaxian_rockclim.cpp rather than galaxold.cpp, but the new driver is not available from the list at the time of this report. | ||||
| 再現手順 | |||||
| 追加情報 | The hardware video was posted to twitter: https://twitter.com/zaviga84/status/1396469676914319365?s=21 The media is flagged for "potentially sensitive content" so you must click the view button. The follow up post includes a photo of the 7910C chip on the PCB. Also click view button. I have attached the photo to this report so it does not get lost. User provides link to site with information about the IC with mp3 audio files of the output. http://eleken.y-lab.org/melody_ic/7910.shtml -text translation- The 7910 series is the first electronic melody IC released by Suwa Seikosha (later Seiko Epson). An IC that applies the company's low-voltage CMOS technology enables his 1.5V operation with a single dry cell battery. One or two melody and two alarm sounds can be selected, and two chords (square wave) can be combined and output. It has two independent envelope generators and can play proper music even though it is an early melody IC. In addition, it has an external transistor driver and can drive the speaker. The one-shot product in the table below is triggered by the playback terminal, and he plays it once. Other than that, playback ends when the sounding when the playback terminal is opened ends. -end translation- Hordiridia The first linked track is the music played in Rock Climber. Melody begins after the Yankee Doodle tune at start. Data Sheet for EPSON 7910 Series Multi-Melody IC https://www.datasheetarchive.com/pdf/download.php?id=296a7a6e4a246ef45f02b4c9502a39a274339a&type=O&term=epson%25207910 | ||||
| 添付ファイル |  rock_climber_melody_7910C_IC.jpg (2021-06-18 08:30) | ||||