[1F A2] - ?

C1/85BD: 22 E6 26 C2  JSR $C226E6               Off to C2/26E6 with ye!

C2/26E6: C2 31        REP #$31                  Flag manipulation.
C2/26E8: AD 88 9C     LDA $9C88                 A = 7E9C88
C2/26EB: 22 28 16 C2  JSR $C21628

C2/1628: C2 31        REP #$31                  Flags and direct page manipulation.
C2/162A: 0B           PHD 
C2/162B: 48           PHA 
C2/162C: 7B           TDC 
C2/162D: 69 F0 FF     ADC #$FFF0
C2/1630: 5B           TCD 
C2/1631: 68           PLA 
C2/1632: 3A           DEC                       Decrement A and store in $0E.
C2/1633: 85 0E        STA $0E
C2/1635: 4A           LSR                       Shift right three times (divide by 8)
C2/1636: 4A           LSR 
C2/1637: 4A           LSR 
C2/1638: 48           PHA                       Put result on stack.
C2/1639: A0 08 00     LDY #$0008                Y = 0x8
C2/163C: A5 0E        LDA $0E                   A = decremented 7E9C88
C2/163E: 22 31 92 C0  JSR $C09231
C2/1642: AA           TAX                       X = C0/9231 result
C2/1643: E2 20        SEP #$20
C2/1645: BF 2F 56 C4  LDA $C4562F,X             Get one byte from 0x4582F + C0/9231 result
C2/1649: FA           PLX                       X = 7E9C88 value / 8
C2/164A: 3D 08 9C     AND $9C08,X               AND (0x4582F + C0/9231 result) by (7E9C88 value / 8)
C2/164D: C2 20        REP #$20
C2/164F: 29 FF 00     AND #$00FF
C2/1652: F0 05        BEQ $1659                 If the result is 0, return 0. If nonzero, return 1.
C2/1654: A9 01 00     LDA #$0001
C2/1657: 80 03        BRA $165C
C2/1659: A9 00 00     LDA #$0000
C2/165C: 2B           PLD 
C2/165D: 6B           RTL                       Return.

C2/26EF: 6B           RTL                       Return.

C1/85C1: C9 00 00     CMP #$0000                Compare against 0x0 and store result (0 or 1) in $06.
C1/85C4: 85 06        STA $06
C1/85C6: 64 08        STZ $08
C1/85C8: 10 02        BPL $85CC
C1/85CA: C6 08        DEC $08                   If negative, $08 = FF; if positive, $08 = 00.
C1/85CC: A5 06        LDA $06                   06+08 -> 0E+10
C1/85CE: 85 0E        STA $0E
C1/85D0: A5 08        LDA $08
C1/85D2: 85 10        STA $10
C1/85D4: 20 5D 04     JSR $045D
C1/85D7: 4C 68 86     JMP $8668

C1/8668: A9 00 00     LDA #$0000
C1/866B: 2B           PLD 
C1/866C: 60           RTS