$EEF4/61172:   Write BAM if needed

EEF4: 20 93 DF  JSR $DF93
EEF7: AA        TAX
EEF8: BD 5B 02  LDA $025B,X
EEFB: 29 01     AND #$01
EEFD: 85 7F     STA $7F
EEFF: A4 7F     LDY $7F
EF01: B9 51 02  LDA $0251,Y
EF04: D0 01     BNE $EF07
EF06: 60        RTS
EF07: A9 00     LDA #$00
EF09: 99 51 02  STA $0251,Y
EF0C: 20 3A EF  JSR $EF3A
EF0F: A5 7F     LDA $7F
EF11: 0A        ASL
EF12: 48        PHA
EF13: 20 A5 F0  JSR $F0A5
EF16: 68        PLA
EF17: 18        CLC
EF18: 69 01     ADC #$01
EF1A: 20 A5 F0  JSR $F0A5
EF1D: A5 80     LDA $80
EF1F: 48        PHA
EF20: A9 01     LDA #$01
EF22: 85 80     STA $80
EF24: 0A        ASL
EF25: 0A        ASL
EF26: 85 6D     STA $6D
EF28: 20 20 F2  JSR $F220
EF2B: E6 80     INC $80
EF2D: A5 80     LDA $80
EF2F: CD D7 FE  CMP $FED7
EF32: 90 F0     BCC $EF24
EF34: 68        PLA
EF35: 85 80     STA $80
EF37: 4C 8A D5  JMP $D58A

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