>* CLUT ----------------------------------------------------
> LD bc,CLUT 1 248 0 12 uts
> LD a,127 62 127 8 uts
> OUT (c),a 237 121 12 uts in-screen, 20 uts off-screen
I've just realised that this particular result is nonsensical - eg, it
would make most of my border scrollies impossible (usually a stream of
OUT(c),r instructions to produce units 16 pixels wide) ... but the result
is certainly there and can be confirmed.
The sequence
LD bc,CLUT : LD a,127 : OUT (c),a
takes 40 ** uts to execute.
This indicates that OUT (c),a takes 20 ** uts to execute.
But on further experimentation, the sequence
LD bc,CLUT : LD a,127 : OUT (c),a : OUT (c),a
takes 56 *** uts to execute.
So the sequence
OUT (c),a : OUT (c),a
must take 36 *** uts to execute. Dividing that by 2 doesn't give a very
sensible answer...
I think my previous investigation may have been too simplistic.
Andrew
--
-- Andrew Collier ([EMAIL PROTECTED]) -- My other
-- http://mnemotech.ucam.org -- .sig is a
-- Part 3 Materials Science, Cambridge -- PDF file
--
