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PHP

; Double Dare (U) application-specific RAM aliases - Pass 1
; Generated from every direct zero-page operand in reachable code:
; ref counts are reads/writes, `where` lists the referencing addresses.
; ZpXX names indicate storage with a role not yet unique enough for a behavioral name;
; Pass 2 replaces them with names derived from observed usage.
Zp00 = $00 ; 4 refs; reads=2 writes=2; used at $801F, 80F6, 80FD, D749
Zp01 = $01 ; 1 refs; reads=0 writes=1; used at $8026
Zp0B = $0B ; 2 refs; reads=1 writes=1; used at $D743, D75E
Zp0C = $0C ; 2 refs; reads=1 writes=1; used at $D745, D760
Zp0D = $0D ; 1 refs; reads=0 writes=1; used at $809E
Zp0E = $0E ; 1 refs; reads=0 writes=1; used at $80A3
Zp0F = $0F ; 1 refs; reads=0 writes=1; used at $C8F8
Zp10 = $10 ; 1 refs; reads=0 writes=1; used at $C8FA
Zp11 = $11 ; 4 refs; reads=1 writes=3; used at $8037, 8041, 8043
Zp12 = $12 ; 4 refs; reads=2 writes=2; used at $803B, 8047, 8049
Zp1F = $1F ; 2 refs; reads=2 writes=0; used at $D72F, D73F
Zp20 = $20 ; 1 refs; reads=1 writes=0; used at $D733
Zp21 = $21 ; 1 refs; reads=1 writes=0; used at $D731
Zp23 = $23 ; 1 refs; reads=0 writes=1; used at $C8FE
Zp24 = $24 ; 2 refs; reads=2 writes=0; used at $D735, D741
Zp26 = $26 ; 3 refs; reads=2 writes=1; used at $D72D, D737, D747
Zp27 = $27 ; 4 refs; reads=2 writes=2; used at $D73B, D74B, D751, D75C