Routines
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34078: Calculate Screen Address
Used by the routines at MenuWriteText, 34465, 34854, DisplayPlayerLives, PrintStringColour, 35420, DrawGauge, LaserBeam_Animate, 43411, HallOfFame and PrintPlayerLevels.
ScreenAddress 34078 LD A,L A=L.
34079 RRCA A=A / 8.
34080 RRCA
34081 RRCA
34082 AND %00011111 Keep only bits 0-4.
34084 LD L,A L=A.
34085 LD A,H A=H.
34086 RLCA A=A * 4.
34087 RLCA
34088 AND %11100000 Keep only bits 5-7.
34090 OR L
34091 LD L,A L=A.
34092 LD A,H A=H.
34093 AND %00000111 Keep only bits 0-2.
34095 EX AF,AF' Switch to the shadow AF register.
34096 LD A,H A=H.
34097 RRCA A=A / 8.
34098 RRCA
34099 RRCA
34100 AND %00011000 Keep only bits 3-4.
34102 OR %01000000 Set bit 6.
34104 LD H,A H=A.
34105 EX AF,AF' Switch to the shadow AF register.
34106 OR H
34107 LD H,A H=A.
34108 RET Return.
View the equivalent code in;
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