Re: ModeY vs. 13h

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2 total messages Started by Court Demas Wed, 05 Aug 1992 15:00

#423

Author: Court Demas
Date: Wed, 05 Aug 1992 15:00

9 lines
801 bytes

     The library I'm writing can use either 320x200, 320x240 or 360x480
(all planar modeX style) and each gives almost exactly the same speed (with
various levels of squashedness).  I really can't think of any reason why they
would be different - code is absolutely identical for drawing in either mode,
except the mode-setting code of course.  Are you SURE you're using modeY? :-)


-court

Re: ModeY vs. 13h

#436

Author: sl8nl
Date: Wed, 05 Aug 1992 23:51

12 lines
1026 bytes

>      The library I'm writing can use either 320x200, 320x240 or 360x480
> (all planar modeX style) and each gives almost exactly the same speed (with
> various levels of squashedness).  I really can't think of any reason why they
> would be different - code is absolutely identical for drawing in either mode,
> except the mode-setting code of course.  Are you SURE you're using modeY? :-)

Unless the mode set code differs from the 320x400 mode set code w/o setting
the max scan line to 0, then yeah, it's ModeY.  Speeds within the tweaked modes
will be the same, but the speed I'm after is mode 13h (regular linear 320x200
64k mode) as opposed to ModeY (planar 320x200x256x4 mode).

Josh

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