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@ -39,7 +39,7 @@ Some modifications were soon added in, in the hope that they would be useful. Le
### Modifications Introduced in V1/V1B
* **Support for VBB Agnus**: This board is compatible with a few different Fat Agnus models, namely: 318069-10 and 390544-03 for PAL or -11 and -02 for NTSC (FIXME). The 390544 models have a *VBB* marking and require a 100-330nF cap to be fitted at C99, which must instead be left unpopulated for the other models. Note that while all the mentioned models are also numbered *8375*, **not all 8375 models are actually compatible**: please check that the extended part number is one of those mentioned above (these usually came from "wide label" A500 featuring a Rev.8A mainboard, A500+ or A600 computers, if you got your Agnus somewhere else, it likely isn't the correct one). 8372 and 8371 models are definitely not compatible either at the moment. And before you ask: no, Alice chips will never work.
* **Mono Audio Link**: This feature was lifted from the A600/A1200 and will transparently downmix the audio output to mono whenever you only plug one of the two audio connectors (any of the two), while on the original A500 you would only hear the corresponding channel. Whenever you plug both connectors, the channels will separate automatically. This is the reason why this feature is enabled by default, in that it is completely transparent to the user in normal conditions. If for some reason you want to revert back to completely separate channels, you can cut the JP98 jumpers (these will be introduced in V3).
* **Mono Audio Link**: This feature was lifted from the A600/A1200 and will transparently downmix the audio output to mono whenever you only plug one of the two audio connectors (any of the two), while on the original A500 you would only hear the corresponding channel. Whenever you plug both connectors, the channels will separate automatically. This is the reason why this feature is enabled by default, in that it is completely transparent to the user in normal conditions.
* **Alternative Power Connector**: Besides using the original A500 power connector, which can be expensive to get hold of, you can use common and cheap DIN-6 or DIN-8 connectors. I'm not providing wiring diagrams at this stage but you can easily make your own:
1. UNSOLDER the Line Filter (LF1 or LF99). This will effectively isolate the power connector.