Routines
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41849: Determine Line Slope
Used by the routine at DrawRoomFrame.
41849 LD L,H
41850 LD H,0
41852 EXX
41853 LD HL,0
41856 LD B,8
41858 EXX
41859 SLA L
41861 RL H
41863 PUSH HL
41864 AND A
41865 SBC HL,DE
41867 JR C,41881
41869 POP AF
41870 EXX
41871 ADD HL,HL
41872 INC HL
41873 DJNZ 41858
41875 PUSH HL
41876 EXX
41877 LD E,L
41878 LD D,H
41879 POP HL
41880 RET
41881 POP HL
41882 EXX
41883 ADD HL,HL
41884 JR 41873
This entry point is used by the routine at DrawRoomFrame.
41886 PUSH DE
41887 EX DE,HL
41888 LD HL,0
41891 AND A
41892 SBC HL,DE
41894 POP DE
41895 RET
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