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138 lines
1.9 KiB
NASM
138 lines
1.9 KiB
NASM
include "constants.asm"
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SECTION "home/time.asm", ROM0
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LatchClock: ; 42b (0:042b)
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ld a, 0
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ld [MBC3LatchClock], a
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ld a, 1
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ld [MBC3LatchClock], a
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ret
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UpdateTime:: ; 436 (0:0436)
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ldh a, [hRTCStatusFlags]
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bit 0, a
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ret nz
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ld a, SRAM_ENABLE
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ld [MBC3SRamEnable], a
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call LatchClock
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ld a, RTC_S
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ld [MBC3SRamBank], a
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ld a, [MBC3RTC]
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and $7f
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ldh [hRTCSeconds], a
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ld a, RTC_M
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ld [MBC3SRamBank], a
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ld a, [MBC3RTC]
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and $7f
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ldh [hRTCMinutes], a
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ld a, RTC_H
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ld [MBC3SRamBank], a
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ld a, [MBC3RTC]
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and $1f
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ldh [hRTCHours], a
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call CloseSRAM
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ld a, [wDebugFlags]
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bit DEBUG_FIELD_F, a
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jr z, .asm_0478
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ld a, [wd153]
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bit 7, a
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jr nz, .asm_048a
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.asm_0478
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ldh a, [hRTCHours]
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ld b, a
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ld hl, .Data_049c
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.asm_047e
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ld a, [hli]
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cp b
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jr nc, .asm_0485
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inc hl
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jr .asm_047e
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.asm_0485
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ld a, [hl]
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ld [wTimeOfDay], a
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ret
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.asm_048a
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ldh a, [hRTCSeconds]
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ld b, a
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ld hl, .Data_04a4
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.asm_0490
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ld a, [hli]
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cp b
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jr nc, .asm_0497
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inc hl
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jr .asm_0490
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.asm_0497
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ld a, [hl]
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ld [wTimeOfDay], a
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ret
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.Data_049c:
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db $06, $01
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db $09, $03
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db $0f, $00
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db $18, $01
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.Data_04a4:
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db $1e, $00
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db $23, $01
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db $32, $02
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db $3b, $03
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Function04ac::
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ld hl, hRTCStatusFlags
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set 0, [hl]
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call Function04ea
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ld a, SRAM_ENABLE
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ld [MBC3SRamEnable], a
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call LatchClock
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ld a, RTC_S
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ld [MBC3SRamBank], a
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ld a, 0
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ld [MBC3RTC], a
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ld a, RTC_M
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ld [MBC3SRamBank], a
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ld a, [wStartMinute]
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ld [MBC3RTC], a
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ld a, RTC_H
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ld [MBC3SRamBank], a
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ld a, [wStartHour]
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ld [MBC3RTC], a
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ld a, [wStartDay]
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ldh [hRTCDays], a
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call CloseSRAM
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ld hl, hRTCStatusFlags
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res 0, [hl]
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ret
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Function04ea:: ; 4ea (0:04ea)
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ld a, SRAM_ENABLE
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ld [MBC3SRamEnable], a
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call LatchClock
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ld a, RTC_DH
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ld [MBC3SRamBank], a
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ld a, [MBC3RTC]
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set 6, a
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ld [MBC3RTC], a
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call CloseSRAM
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ret
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Function0502:: ; 0502
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ld a, SRAM_ENABLE
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ld [MBC3SRamEnable], a
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call LatchClock
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ld a, RTC_DH
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ld [MBC3SRamBank], a
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ld a, [MBC3RTC]
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res 6, a
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ld [MBC3RTC], a
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call CloseSRAM
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ret |