1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
Title_Screen:
.ASSERT bank(.) bank(=Title_Screen_Sprite_Data)
.ASSERT bank(.) bank(=Title_Screen_Sprite_Data.end)
LD HL, $9010
LD DE, ptr(=Title_Screen_Sprite_Data)
LD BC, $07f0
CALL =memcpy
LD HL, $8C00
LD DE, =Title_Screen_Sprite_Data+$07f0
LD BC, =Title_Screen_Sprite_Data.end-=Title_Screen_Sprite_Data-$07f0
CALL =memcpy
LD HL, $8800
LD DE, ptr(=Font_Data)
LD BC, =Font_Data.end-=Font_Data
CALL =memcpy
.draw_picture:
LD HL, $9842
LD C, $01
.draw_picture.loop16times:
LD B, $10
.draw_picture.loop:
LD A, C
LD (HL+), A
DEC B
INC C
LD A, C
CP $80
JR NZ, =.skip_font_skip
LD C, $C0
.skip_font_skip:
LD A, B
CP $00
JR NZ, =.draw_picture.loop
LD A, L
ADD $10
LD L, A
LD A, H
ADC $00
LD H, A
LD A, H
CP $99
JR NZ, =.draw_picture.loop16times
LD A, L
CP $A2
JR NZ, =.draw_picture.loop16times
LD A, $00
LD $reg_viewport_x, A
LD $reg_viewport_y, A
LD A, $lcdc_mapbg_tilemap
LD $reg_lcd_controller, A
LD A, $80
.blink:
.blink.loop1:
CALL =Check_Frame_stuff
INC A
CP $20
JR NZ =.blink.loop1
CALL =.blink.draw_text
LD A, $00
.blink.loop2:
CALL =Check_Frame_stuff
INC A
CP $20
JR NZ =.blink.loop2
CALL =.blink.undraw_text
LD A, $00
JR =.blink
.blink.draw_text:
PUSH BC
LD HL, $99C4
LD BC, =Press_Txt
CALL =Print_str
INC HL
INC HL
LD BC, =Start_Txt
CALL =Print_str
POP BC
RET
.blink.undraw_text:
PUSH BC
LD HL, $99C4
LD BC, $000C
CALL =bzero
POP BC
RET
Check_Frame_stuff:
CALL =RNG_Step
CALL =Pad_Button_Check
PUSH AF
LD A, $mem_button_action
BIT 3, A
JR NZ, =Title_Screen_Start_Pressed
POP AF
CALL =Next_VBlank_Wait
RET
Title_Screen_Start_Pressed:
LD A, $00
.loop:
CALL =Next_VBlank_Wait
INC A
CP $05
JR NZ =.loop
LD A, $reg_bg_palette
CP $00
SLA A
SLA A
LD $reg_bg_palette, A
JR NZ, =Title_Screen_Start_Pressed
LD A, $00
.loop2:
CALL =Next_VBlank_Wait
INC A
CP $30
JR NZ =.loop2
CALL =Next_VBlank_Wait
LD A, $00
LD $reg_lcd_controller, A
CALL =Load_Tile
JP =New_Dungeon
|
