BF13: Routine at BF13
| BF13 | LD A,($AA52) | 
| BF16 | LD L,A | 
| BF17 | LD H,$00 | 
| BF19 | LD ($C425),HL | 
| BF1C | LD A,($AA59) | 
| BF1F | LD ($C41D),A | 
| BF22 | LD A,($AA58) | 
| BF25 | LD ($C41E),A | 
| BF28 | LD A,($AA57) | 
| BF2B | LD ($C420),A | 
| BF2E | LD A,($AA12) | 
| BF31 | LD L,A | 
| BF32 | LD H,$00 | 
| BF34 | LD ($C423),HL | 
| BF37 | LD A,($AA19) | 
| BF3A | LD ($C41B),A | 
| BF3D | LD A,($AA18) | 
| BF40 | LD ($C41C),A | 
| BF43 | LD A,($AA17) | 
| BF46 | LD ($C41F),A | 
| BF49 | LD HL,($C423) | 
| BF4C | SLA L | 
| BF4E | RL H | 
| BF50 | LD DE,$C440 | 
| BF53 | ADD HL,DE | 
| BF54 | LD E,(HL) | 
| BF55 | INC HL | 
| BF56 | LD D,(HL) | 
| BF57 | LD HL,$44CC | 
| BF5A | ADD HL,DE | 
| BF5B | LD ($C428),HL | 
| BF5E | LD HL,($C425) | 
| BF61 | SLA L | 
| BF63 | RL H | 
| BF65 | LD DE,$C440 | 
| BF68 | ADD HL,DE | 
| BF69 | LD E,(HL) | 
| BF6A | INC HL | 
| BF6B | LD D,(HL) | 
| BF6C | LD HL,$44CC | 
| BF6F | ADD HL,DE | 
| BF70 | LD ($C42A),HL | 
| BF73 | LD A,($C41B) | 
| BF76 | LD D,A | 
| BF77 | LD A,($C42C) | 
| BF7A | LD E,A | 
| BF7B | CALL $C1F6 | 
| BF7E | LD A,D | 
| BF7F | LD ($C434),A | 
| BF82 | LD IX,($C428) | 
| BF86 | LD D,(IX+$01) | 
| BF89 | LD A,($C41B) | 
| BF8C | ADD A,D | 
| BF8D | LD E,A | 
| BF8E | LD A,($C42D) | 
| BF91 | LD D,A | 
| BF92 | CALL $C1F6 | 
| BF95 | LD A,E | 
| BF96 | LD ($C435),A | 
| BF99 | LD A,($C41C) | 
| BF9C | LD D,A | 
| BF9D | LD A,($C42E) | 
| BFA0 | LD E,A | 
| BFA1 | CALL $C1F6 | 
| BFA4 | LD A,D | 
| BFA5 | LD ($C436),A | 
| BFA8 | LD D,(IX+$02) | 
| BFAB | LD A,($C41C) | 
| BFAE | ADD A,D | 
| BFAF | LD E,A | 
| BFB0 | LD A,($C42F) | 
| BFB3 | LD D,A | 
| BFB4 | CALL $C1F6 | 
| BFB7 | LD A,E | 
| BFB8 | LD A,$BE | 
| BFBA | LD ($C437),A | 
| BFBD | LD A,($C41D) | 
| BFC0 | LD D,A | 
| BFC1 | LD A,($C430) | 
| BFC4 | LD E,A | 
| BFC5 | CALL $C1F6 | 
| BFC8 | LD A,D | 
| BFC9 | LD ($C438),A | 
| BFCC | LD IY,($C42A) | 
| BFD0 | LD D,(IY+$01) | 
| BFD3 | LD A,($C41D) | 
| BFD6 | ADD A,D | 
| BFD7 | LD E,A | 
| BFD8 | LD A,($C431) | 
| BFDB | LD D,A | 
| BFDC | CALL $C1F6 | 
| BFDF | LD A,E | 
| BFE0 | LD ($C439),A | 
| BFE3 | LD A,($C41E) | 
| BFE6 | LD D,A | 
| BFE7 | LD A,($C432) | 
| BFEA | LD E,A | 
| BFEB | CALL $C1F6 | 
| BFEE | LD A,D | 
| BFEF | LD ($C43A),A | 
| BFF2 | LD D,(IY+$02) | 
| BFF5 | LD A,($C41E) | 
| BFF8 | ADD A,D | 
| BFF9 | LD E,A | 
| BFFA | LD A,($C433) | 
| BFFD | LD D,A | 
| BFFE | CALL $C1F6 | 
| C001 | LD A,E | 
| C002 | LD A,$BE | 
| C004 | LD ($C43B),A | 
| C007 | LD A,($C41B) | 
| C00A | LD ($C42C),A | 
| C00D | LD D,(IX+$01) | 
| C010 | ADD A,D | 
| C011 | LD ($C42D),A | 
| C014 | LD A,($C41C) | 
| C017 | LD ($C42E),A | 
| C01A | LD D,(IX+$02) | 
| C01D | ADD A,D | 
| C01E | LD ($C42F),A | 
| C021 | LD A,($C41D) | 
| C024 | LD ($C430),A | 
| C027 | LD D,(IY+$01) | 
| C02A | ADD A,D | 
| C02B | LD ($C431),A | 
| C02E | LD A,($C41E) | 
| C031 | LD ($C432),A | 
| C034 | LD D,(IY+$02) | 
| C037 | ADD A,D | 
| C038 | LD ($C433),A | 
| C03B | LD A,($C434) | 
| C03E | LD B,A | 
| C03F | LD A,($C439) | 
| C042 | ADD A,$0B | 
| C044 | CP B | 
| C045 | JP C,$C101 | 
| C048 | LD A,($C438) | 
| C04B | LD B,A | 
| C04C | LD A,($C435) | 
| C04F | ADD A,$0B | 
| C051 | CP B | 
| C052 | JP C,$C101 | 
| C055 | LD A,($C434) | 
| C058 | LD D,A | 
| C059 | LD A,($C438) | 
| C05C | LD E,A | 
| C05D | CALL $C1F6 | 
| C060 | LD A,D | 
| C061 | LD ($C434),A | 
| C064 | LD A,($C435) | 
| C067 | LD D,A | 
| C068 | LD A,($C439) | 
| C06B | LD E,A | 
| C06C | CALL $C1F6 | 
| C06F | LD A,E | 
| C070 | LD ($C435),A | 
| C073 | LD A,($C436) | 
| C076 | LD D,A | 
| C077 | LD A,($C43A) | 
| C07A | LD E,A | 
| C07B | CALL $C1F6 | 
| C07E | LD A,D | 
| C07F | LD ($C436),A | 
| C082 | LD A,($C437) | 
| C085 | LD D,A | 
| C086 | LD A,($C43B) | 
| C089 | LD E,A | 
| C08A | CALL $C1F6 | 
| C08D | LD A,E | 
| C08E | LD ($C437),A | 
| C091 | LD A,($C434) | 
| C094 | LD D,A | 
| C095 | LD A,($C435) | 
| C098 | SUB D | 
| C099 | SRL A | 
| C09B | SRL A | 
| C09D | ADD A,$02 | 
| C09F | LD H,A | 
| C0A0 | LD ($C40A),A | 
| C0A3 | LD ($C40F),A | 
| C0A6 | LD A,($C436) | 
| C0A9 | LD D,A | 
| C0AA | LD A,($C437) | 
| C0AD | SUB D | 
| C0AE | LD L,A | 
| C0AF | LD ($C409),A | 
| C0B2 | LD A,($C434) | 
| C0B5 | AND $FC | 
| C0B7 | LD B,A | 
| C0B8 | LD A,($C436) | 
| C0BB | LD C,A | 
| C0BC | LD ($C41A),A | 
| C0BF | LD C,$48 | 
| C0C1 | SUB C | 
| C0C2 | LD C,A | 
| C0C3 | CALL $C234 | 
| C0C6 | LD A,($C434) | 
| C0C9 | LD ($C438),A | 
| C0CC | LD A,($C436) | 
| C0CF | LD ($C43A),A | 
| C0D2 | LD A,($C427) | 
| C0D5 | AND A | 
| C0D6 | JP Z,$C0E2 | 
| C0D9 | CALL $C1A2 | 
| C0DC | CALL $C1CC | 
| C0DF | JP $C0E8 | 
| C0E2 | CALL $C1CC | 
| C0E5 | CALL $C1A2 | 
| C0E8 | LD A,($C436) | 
| C0EB | CALL Screen_Calc | 
| C0EE | LD A,($C434) | 
| C0F1 | SRL A | 
| C0F3 | SRL A | 
| C0F5 | LD E,A | 
| C0F6 | LD D,$00 | 
| C0F8 | ADD HL,DE | 
| C0F9 | EX DE,HL | 
| C0FA | LD HL,$F730 | 
| C0FD | CALL $C3E4 | 
| C100 | RET |