SamCoupé palette support

[nitrofurano]

btw, 'samcoupeattr(ikv as ubyte,pav as ubyte)' were really missing - the updated version is below:
(it's much more simpler than from ULAplus, since it only works on 'bright', because only using those 16 colours)

library/samcoupepalette.bas

Code:

'- SamCoupé palette library for Boriel's zxbasic-compiler
'- 20111221201251 - (ↄ) Paulo Silva - http://nitrofurano.altervista.org
'- This file is released under the GPL v3 License

dim tmpv as uinteger

sub samcoupepalette(clv as ubyte, vlv as ubyte):
  out (clv*256)bor 248,vlv:pause 1
  end sub

function samcoupehexcolour(hxcv as uinteger):
  tmpv=(hxcv band 4)/4
  tmpv=tmpv bor ((hxcv band 64)/16)
  tmpv=tmpv bor ((hxcv band 8)*2)
  tmpv=tmpv bor ((hxcv band 128)/2)
  tmpv=tmpv bor ((hxcv band 32)/4)
  hxcv=int(hxcv/256)
  tmpv=tmpv bor ((hxcv band 64)/16)
  tmpv=tmpv bor ((hxcv band 8)*2)
  return tmpv
  end function

sub samcoupeattr(ikv as ubyte,pav as ubyte):
  '- usage: ink priority (from 0 to 15), and only using 3 bits lsb from paper
  ink(ikv band 7):paper(pav band 7)
  bright((ikv band 16)/16)
  end sub