Ophis/doc/tutor4c.oph

73 lines
1005 B
Plaintext
Raw Normal View History

.include "c64-1.oph"
.macro print
ldx #0
_loop: lda _1, x
beq _done
jsr chrout
inx
bne _loop
_done:
.macend
.macro greet
lda #30
jsr delay
`print hello1
`print _1
`print hello2
.macend
lda #147
jsr chrout
lda #lower'case
jsr chrout
`greet target1
`greet target2
`greet target3
`greet target4
`greet target5
`greet target6
`greet target7
`greet target8
`greet target9
`greet target10
rts
.charmap 'A, "abcdefghijklmnopqrstuvwxyz"
.charmap 'a, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
hello1: .byte "Hello, ",0
hello2: .byte "!", 13, 0
target1: .byte "programmer", 0
target2: .byte "room", 0
target3: .byte "building", 0
target4: .byte "neighborhood", 0
target5: .byte "city", 0
target6: .byte "nation", 0
target7: .byte "world", 0
target8: .byte "Solar System", 0
target9: .byte "Galaxy", 0
target10: .byte "Universe", 0
; DELAY routine. Executes 2,560*(A) NOP statements.
delay: tax
ldy #00
* nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
iny
bne -
dex
bne -
rts