; Mikael Magnusson
name "Switch 2 - 2 channels"
include "emu_constants.asm"
Left0 IO
Right0 IO
Left1 IO
Right1 IO
tmp0 dyn 1
tmp1 dyn 1
switchL control 0,0,1
switchR control 0,0,1
switch macro dst, src, sw
macints dst, C_0, src, sw
endm
switch_neg macro dst, src
andxor dst, src, C_1, C_1
endm
switch2 macro dst, src0, src1, sw
switch tmp0, src1, sw
switch_neg tmp1, sw
switch tmp1, src0, tmp1
acc3 dst, tmp0, tmp1, C_0
endm
switch2 Left0, Left0, Left1, switchL
switch2 Right0, Right0, Right1, switchR
end