Nintendo DMG-01 - Game Boy Console Manual page 18

2.7.1. Power Up Sequence
BC=$0013
DE=$00D8
HL=$014D
Stack Pointer=$FFFE
[$FF05] = $00
[$FF06] = $00
[$FF07] = $00
[$FF10] = $80
[$FF11] = $BF
[$FF12] = $F3
[$FF14] = $BF
[$FF16] = $3F
[$FF17] = $00
[$FF19] = $BF
[$FF1A] = $7F
[$FF1B] = $FF
[$FF1C] = $9F
[$FF1E] = $BF
[$FF20] = $FF
[$FF21] = $00
[$FF22] = $00
[$FF23] = $BF
[$FF24] = $77
[$FF25] = $F3
[$FF26] = $F1-GB, $F0-SGB ; NR52
[$FF40] = $91
[$FF42] = $00
[$FF43] = $00
[$FF45] = $00
[$FF47] = $FC
[$FF48] = $FF
[$FF49] = $FF
[$FF4A] = $00
[$FF4B] = $00
[$FFFF] = $00
Page 18
; TIMA
; TMA
; TAC
; NR10
; NR11
; NR12
; NR14
; NR21
; NR22
; NR24
; NR30
; NR31
; NR32
; NR33
; NR41
; NR42
; NR43
; NR30
; NR50
; NR51
; LCDC
; SCY
; SCX
; LYC
; BGP
; OBP0
; OBP1
; WY
; WX
; IE
TM
Game Boy CPU Manual
V 1.01