VSCode.BBCMicroASM.Template/ALevelProject.asm at master · OldSkoolCoder/VSCode.BBCMicroASM.Template · GitHub

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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
OSWRCH      = &FFEE
OSASCI      = &FFE3

NoOfRounds  = &78
XStart      = &72
YStart      = &73
XEnd        = &75
YEnd        = &76
ScreenPos   = &70
CharPosition= &74
Character   = &77

NoOfCols    = 39
NoOfRows    = 24

ScreenRam   = &7C00

TitleStart  = &7DEC
TitleEnd    = &7DFB

\4450 FOR C = 0 TO 2 STEP 2
\4460 P%=&6000
\4470 [OPTC

ORG &6000

.CodeStart
    LDA #12
    JSR &FFE3
    LDA #0
    STA NoOfRounds

.Start
    LDA #0
    STA XStart
    STA YStart
    STA ScreenPos
    STA CharPosition
    LDY #0

.Print
    LDA Text,Y
    STA TitleStart,Y
    INY
    CPY #_Text - Text
    BNE Print

    LDA NoOfRounds
    LSR A
    CLC
    ADC #129
    STA TitleEnd
    LDA #>ScreenRam
    STA ScreenPos + 1
    LDA #NoOfCols
    STA XEnd
    LDA #NoOfRows
    STA YEnd

.Next
    LDX CharPosition
    LDA Char,X
    CPX #0
    BNE Next1
    LDA NoOfRounds
    LSR A
    CLC
    ADC #129

.Next1
    STA Character
    LDA NoOfRounds
    AND #1
    CMP #1
    BNE TopStart
    LDA XStart
    CMP #1
    BCC TopStart
    LDA #32
    STA Character

.TopStart
    LDY XStart

.Top
    LDA Character
    STA (ScreenPos),Y
    INY
    CPY XEnd
    BNE Top
    LDX YStart
    LDY XEnd

.Right
    LDA Character
    STA (ScreenPos),Y
    CLC
    LDA ScreenPos
    ADC #40
    STA ScreenPos
    LDA ScreenPos + 1
    ADC #0
    STA ScreenPos + 1
    INX
    CPX YEnd
    BNE Right
    LDY XEnd

.Bottom
    LDA Character
    STA (ScreenPos),Y
    DEY
    CPY XStart
    BNE Bottom
    LDX YEnd
    LDY XStart

.Left
    LDA Character
    STA (ScreenPos),Y
    SEC
    LDA ScreenPos
    SBC #40
    STA ScreenPos
    LDA ScreenPos + 1
    SBC #0
    STA ScreenPos + 1
    DEX
    CPX YStart
    BNE Left
    CLC
    LDA ScreenPos
    ADC #40
    STA ScreenPos
    LDA ScreenPos + 1
    ADC #0
    STA ScreenPos + 1
    LDX #32

.Del1
    LDY #255

.Del2
    DEY
    BNE Del2
    DEX
    BNE Del1
    INC XStart
    DEC XEnd
    INC YStart
    DEC YEnd
    INC CharPosition
    LDA CharPosition
    CMP #_Char - Char
    BEQ Next3
    JMP Next

.Next3
    INC NoOfRounds
    LDA NoOfRounds
    CMP #(_Char - Char) + 1
    BEQ Next4
    JMP Start

.Next4
    RTS


.Char   EQUS " BANKACCOUNT"
._Char

.Text   EQUS 135, " Bank Account"
._Text

.CodeEnd

SAVE "MAIN", CodeStart, CodeEnd

\5140 ]
\5150 Char=P%:$P%=" BANKACCOUNT":P%=P%+12
\5160 Text=P%:$P%="  Bank Account "
\5170 NEXT
\5180 CALL&6000
\5190 CALL&6000