[Oberon] Project Oberon color
PeterMatthias at web.de
Sat Dec 9 10:11:42 CET 2017
Am 09.12.2017 um 04:27 schrieb Jörg Straube:
> I enhanced NWs original PO on FPGA from B/W to 16 indexed colors (by
> changing Verilog source and Display.Mod)
Is the source of Display.Mod available?
> If yo really want TextFrames to work with B/W and color, you have to
> detect the nbr of colors from Display and set the mode accordingly.
I just want to port the system without touching many higher level modules.
> and initialized the color table
> with these Master Color Values: (table 1)
Thanks. As someone already uses this definition, it makes sense for me
to use the same.
Than I suppose white is defined as 0FH? I think best definition would be
-1. However I am kind of reluctant to change the interface.
>> Frankly, I am absolutely fascinated by the compiler but less exited by
>> the System. Sometimes I really wonder that it works at all.
> The fascinating bit of the Oberon System is that it is so small: A
> working OS <111 kB (without compiler)
>> From Texts.Load:
>> q.voff := ASR(LSL(bt, -24), 24);
I suppose this came from porting to Oberon-07 and was
q.voff := ASH(SYSTEM.LSH(bt, 24), -24) before.
As some code obviosly is not needed, it could even be smaller ;-)
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