Routines
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6EEF: Change Colour In Ink And Paper
Used by the routine at ChangePictureColour.
Changes colour C to colour L across the saved attribute buffer, first in the ink bits and then, with both colours moved up three bits, in the paper bits.
ChangeInkAndPaperColour 6EEF LD B,$07
6EF1 LD H,$F8
6EF3 CALL ChangeMatchingColourBits
6EF6 LD A,C
6EF7 SLA A
6EF9 SLA A
6EFB SLA A
6EFD LD C,A
6EFE LD A,L
6EFF SLA A
6F01 SLA A
6F03 SLA A
6F05 LD L,A
6F06 LD B,$38
6F08 LD H,$C7
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