Mail Archives: djgpp/1997/07/26/02:00:04
At 08:14 PM 24/07/1997 GMT, you wrote:
>>No SIR!
>>VESA is a software API. SDD >is< VESA 2.0, not an emulation.
>>The difference between SDD and your card is that SDD goes TSR, but your
>>card is in ROM from the start.
>>
>>Guess why it's in ROM, folks.. it's software :)
>>VESA is an API, which means that instead of having a gazillion different
>>calls to put a pixel on a screen, you only do one, and VESA picks the
>>right one for your video card.
>>
>>VESA translates, but not from 2.0 > 1.2 - it translates VESA calls to
>>direct hardware writes.
>
>That's right but...
>
>When a board suports Vesa 2 Vesa calls to direct hardware writes but a
>board only supports Vesa 1.2 and we use a emulator then the emulator
>translates Vesa 2 Calls to Vesa 1.2 and send the information to the
>board that calls direct hardware calls. As you see the emulator spends
>time converting from Vesa 2 to Vesa 1.2
That last is not true! (this is my opinion, sorry).
Ivan Baldo: baldo AT chasque DOT apc DOT org - http://www.chasque.apc.org/baldo
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