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; This file contains functions to handle adding and retrieving BCD (binary coded decimal) values.
Func_3500:
ld hl, wScoreToAdd
ld a, e
ld [hli], a
ld a, d
ld [hli], a
ld a, c
ld [hli], a
ld a, b
ld [hli], a
xor a
ld [hli], a
ld [hl], a
ld bc, wScoreToAdd
callba AddBigBCD6FromQueueWithBallMultiplier
ret
AddBCDEToCurBufferValue: ; 0x351c
ld hl, wScoreToAdd
ld a, e
ld [hli], a
ld a, d
ld [hli], a
ld a, c
ld [hli], a
ld a, b
ld [hli], a
xor a
ld [hli], a
ld [hl], a
ld bc, wScoreToAdd
callba AddBigBCD6FromQueue
ret
AddBCDEToJackpot: ; 0x3538
; Add BCD value bcde to [wCurrentJackpot]. Cap at $99999999.
ld hl, wCurrentJackpot
ld a, [hl]
add e
daa
ld [hli], a
ld a, [hl]
adc d
daa
ld [hli], a
ld a, [hl]
adc c
daa
ld [hli], a
ld a, [hl]
adc b
daa
ld [hli], a
ret nc
ld hl, wCurrentJackpot
ld a, $99
ld [hli], a
ld [hli], a
ld [hli], a
ld [hli], a
ret
RetrieveJackpot: ; 0x3556
; Retrieves a 4-byte BCD value at wCurrentJackpot
ld a, [wCurrentJackpot]
ld e, a
ld a, [wCurrentJackpot + 1]
ld d, a
ld a, [wCurrentJackpot + 2]
ld c, a
ld a, [wCurrentJackpot + 3]
ld b, a
ret
Func_3567:
; BCD add bc to hl
ld a, l
add c
daa
ld l, a
ld a, h
adc b
daa
ld h, a
ret
Func_3570:
; BCD add de to hl
ld a, l
add e
daa
ld l, a
ld a, h
adc d
daa
ld h, a
ret
Func_3579: ; 0x3579
; Delete 4-byte BCD value at wCurrentJackpot
ld hl, wCurrentJackpot
xor a
ld [hli], a
ld [hli], a
ld [hli], a
ld [hli], a
ret
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