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AmigaOS 4.1 FE with the Radeon 9200 256MB card, only 128MB recognized

Subject: AmigaOS 4.1 FE with the Radeon 9200 256MB card, only 128MB recognized
by monomango on 2019/3/12 14:14:32

Hi,

I have the Radeon 9200 with my AmigaOne G3-SE, however only 128MB of the total 256MB is recognized.
I read some place that this is due to the driver only initialising the card's memory from bank 1, ignoring the memory in bank 2. Most cards have only one bank, some (probably later ones) have two, apparently.

Is there any solution that is known for this ?

I know 256MB is probably not needed with this card, as most older 3D codes under AmigaOS (OpenGL 1.3 class card..) uses less than 128MB. . however from a curiosity viewpoint, I would like to understand the issue. I also wonder if this affects the card's memory bandwidth (for instance limiting it to 64-bit). It has a 128 bit wide memory interface to the total 256MB.

On a side note, I can never get this card running in full HD, however not issue with the 9200 SE card I have.. even same settings used.

Thanks!

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