hardware:audio
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| hardware:audio [2025/03/01 20:39] – [Effective sample rate] clyde | hardware:audio [2026/06/05 05:20] (current) – [Effective sample rate] clyde | ||
|---|---|---|---|
| Line 23: | Line 23: | ||
| The DAC is not directly writable by the ACP. Any write by the ACP to an address at $8000 or above will also be mirrored to a buffer register. This buffer register is copied to the DAC at every IRQ signal. | The DAC is not directly writable by the ACP. Any write by the ACP to an address at $8000 or above will also be mirrored to a buffer register. This buffer register is copied to the DAC at every IRQ signal. | ||
| + | Sample bytes written to the DAC should be unsigned, where zero represents the lowest voltage it can output and 255 represents the highest. | ||
| ==== Audio Control Registers ==== | ==== Audio Control Registers ==== | ||
| Line 50: | Line 51: | ||
| | **$B7** | **31960** | 32000 | 39.8 | 448 | | | **$B7** | **31960** | 32000 | 39.8 | 448 | | ||
| | **$A8** | **44192** | 44100 | 91.9 | 324 | | | **$A8** | **44192** | 44100 | 91.9 | 324 | | ||
| - | | **$A5** | **47099** | 32000 | 900.7 :( | 304 | | + | | **$A5** | **47099** | 48000 | 900.7 :( | 304 | |
| | **$94** | **87306** | 88200 | 894.0 :( | 164 | | | **$94** | **87306** | 88200 | 894.0 :( | 164 | | ||
| | **$92** | **96744** | 96000 | 744.5 :( | 148 | | | **$92** | **96744** | 96000 | 744.5 :( | 148 | | ||
hardware/audio.1740861582.txt.gz · Last modified: 2025/03/01 20:39 by clyde