Routines
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54976: Interrupt routine: Write current attribute for a glowing block to attribute file
Used by the routines at 54853 and 54955.
Input
HL Attribute file address that is glowing
E Current attribute of glowing blocks
Output
HL Next attribute file address on from that in HL on input
54976 LD A,(HL) Load current attribute of this memory location into A
54977 AND 248 Reset all INK bits
54979 OR E Set required INK bits for current colour
54980 LD (HL),A Write data to attribute file to display the colour
54981 INC HL Advance to next attribute file address
54982 RET Return
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