Re: Second Sight....

[jlee@ics.uci.edu (Orion Pax)]

Philip Stephens (philip@labtam.oz.au) wrote:
:   * 20 Mhz Z180 processor for "blitting" (and undoubtable usable for many
:     other tasks if programmers are clever enough)

Uh, I think that 20 mhz number is a misnomer.  What would be more accurate
is how many pixels it can shovel around in X time.  If it say takes 20
cycles to shove one pixel around (say 8 bytes) it could end it being
slightly slow.  Anybody got the cpu stats? :)

: doing most of the blitting and texture maps stored directly in VRAM, I
: believe I can have a 320x200x256 resolution screen rendering at a respectable
: frame rate.)

This sounds pretty good since 320x200x256 uses about 64k of memory.  Plenty
of memory to store up texture maps, sprite maps, etc.

: great colour and shading, not to mention faster graphics using sprite routines
: downloaded onto the video board itself.  What more could you ask for?

Uh, anybody know how much program code space is available for the Z180?  It
would be silly to give it say 256 bytes of operating space. :)

Joseph
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