code stuff

[] refer to bytes that are changed in the ACE

DBD7

nop           ; filler
add b         ; get D7
ld (FB7F),a   ; load D7 in later box name
xor a         ; get 00
sub a,FD      ; get 03
ld d,b        ; terminator
nop           ; filler
ld (FCAC),a   ; change map group to 03
ld (FCAD),a   ; change lastmap group to 03
sub a,E3      ; get 20
ld d,b        ; terminator
ld (FBEF),a   ; load 20 in later box name (jr nz byte)
ei            ; filler
ei            ; filler
[jr nz],84    ; jump to DB75 (box 1 name)

DB75

xor e         ; get 58
sub a,FD      ; get 5B
ld (FB83),a   ; load 5B in later box name
xor a         ; get 00
ld d,b        ; terminator
nop           ; filler
ld (FC[D7]),a ; 0 mons in party
or b          ; get DC
ld (FB[5B]),a ; make red appear
and c         ; get 04
ld d,b        ; terminator
sub a,B8      ; get 4C
ld (FCAE),a   ; set map to Silver Cave
xor a         ; unset carry flag
ret nc        ; return