; Marble Madness (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 ; 9 refs; reads=3 writes=6; used at $8215, FBD6, FC6E, FF6B, +5 more
Zp01                    = $01 ; 2 refs; reads=0 writes=2; used at $FC51, FC67
Zp02                    = $02 ; 1 refs; reads=0 writes=1; used at $FC53
Zp03                    = $03 ; 5 refs; reads=2 writes=3; used at $8229, 8523, FC55, FC5F, +1 more
Zp0A                    = $0A ; 2 refs; reads=1 writes=1; used at $850B
Zp0F                    = $0F ; 1 refs; reads=0 writes=1; used at $FF69
Zp10                    = $10 ; 1 refs; reads=0 writes=1; used at $821C
Zp12                    = $12 ; 1 refs; reads=0 writes=1; used at $8251
Zp20                    = $20 ; 1 refs; reads=0 writes=1; used at $FC09
Zp21                    = $21 ; 3 refs; reads=0 writes=3; used at $83BB, 847E, FC0B
Zp28                    = $28 ; 1 refs; reads=0 writes=1; used at $8528
Zp29                    = $29 ; 1 refs; reads=0 writes=1; used at $852D
Zp3C                    = $3C ; 1 refs; reads=1 writes=0; used at $906D
Zp41                    = $41 ; 1 refs; reads=0 writes=1; used at $8253
Zp42                    = $42 ; 1 refs; reads=0 writes=1; used at $8255
Zp78                    = $78 ; 1 refs; reads=0 writes=1; used at $84A0