[Oberon] RGB display in Oberon RISC5

[Jörg Straube]

Hi Magnus

Thx for preparing VID.v
As the original ProjectOberon has only 1M of memory, it's a pity to waste 25% of your 4 bit color layout. Basically, we could use 16 colors instead of 8.
Instead of mapping the bits directly to RGB, I would rather use the 4 bits as index into a color palette.

Display.Mod has to be adapted accordingly.

Jörg

> Am 18.04.2016 um 21:59 schrieb Magnus Karlsson <magnus at saanlima.com>:
> 
> I have made an updated version of VID.v with support for an RGB video buffer.
> 
> The video buffer is now 4x larger (about 40% of the total 1 MB RAM) and video refresh will use up about 40% of the memory bandwidth.
> 
> See http://saanlima.com/forum/viewtopic.php?f=14&p=1786#p1783 for Verilog code and bit files for Pepino_LX9 and Pepino_LX25.
> 
> Magnus
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