Code block address: DB61   Length: 22  M:1 X:0 called by: D9ED
00DB61    AD4211        lda     al, 0x1142                      ; Call target from D9ED
00DB64    3A            inc     al
00DB65    C914          cmp     al, #0x14
00DB67    9002          bcc     0xdb6b
00DB69    A900          lda     al, #0x00
00DB6B    8D4211        sta     al, 0x1142                      ; Branch target from DB67
00DB6E    4A            lsr     al
00DB6F    B006          bcs     0xdb77
00DB71    0C201002      seb     #0x02, 0x1020
00DB75    8007          bra     0xdb7e

Code block address: DB77   Length: 44  M:1 X:0 called by: DB6F
00DB77    4A            lsr     al                              ; Branch target from DB6F
00DB78    B004          bcs     0xdb7e
00DB7A    0C201004      seb     #0x04, 0x1020
00DB7E    AD4211        lda     al, 0x1142                      ; Branch target from DB75, Branch target from DB78
00DB81    C907          cmp     al, #0x07
00DB83    D004          bne     0xdb89
00DB85    0C201001      seb     #0x01, 0x1020
00DB89    AA            tax                                     ; Branch target from DB83
00DB8A    428A          txb     
00DB8C    38            sec     
00DB8D    42E90A        sbc     bl, #0x0a
00DB90    9003          bcc     0xdb95
00DB92    42AA          tbx     
00DB94    8A            txa     
00DB95    C903          cmp     al, #0x03                       ; Branch target from DB90
00DB97    F00A          beq     0xdba3
00DB99    C909          cmp     al, #0x09
00DB9B    D00A          bne     0xdba7
00DB9D    0C201020      seb     #0x20, 0x1020
00DBA1    8004          bra     0xdba7

Code block address: DBA3   Length: 5  M:1 X:0 called by: DB97
00DBA3    0C201010      seb     #0x10, 0x1020                   ; Branch target from DB97
00DBA7    60            rts                                     ; Branch target from DB9B, Branch target from DBA1