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| | Specifications |
 | | The GBA includes only a single (mono) speaker built-in, each channel may be output to either left and/or right channels by using the external line-out connector (for stereo headphones, etc). |
 | | Note that the GBA (slave) cannot send any commands itself, all it can do is to read incoming data, and to provide 'reply' data which may (or may not) be read out by the master unit. |
 | | The current GBA BIOS addresses only the upper eight bits of this register (by writing 00h or 80h to address 04000301h), however, as the register isn't officially documented, some or all of the bits might have different meanings in future GBA models. |
| www.work.de /nocash/gbatek.htm (15796 words) |
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