home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Ahoy 1986 February
/
Ahoy_Magazine_86-02_1986_Double_L.d64
/
ext background
(
.txt
)
< prev
next >
Wrap
Commodore BASIC
|
2022-10-26
|
583b
|
15 lines
1 rem *** extended background demo ***
9 rem set extended background color mode
10 poke 53265,peek(53265)or 64
11 rem set up regular string for background #0
12 a$(0)="abcdefghijklmnopqrstuvwxyz 1234567890 !#$%&'()+-\_*^@=;:[]/.,<>?"
13 a$(0)=a$(0)+chr$(34)+chr$(34)
14 rem convert regular characters to shifted characters for background #1
15 a$(1)="":for i=1 to len(a$(0)):a=asc(mid$(a$(0),i,1))
16 if a<64 then a=a+128:goto 18
17 a=a+32
18 a$(1)=a$(1)+chr$(a):next
19 rem add reverse-on/off characters to both strings for backgrounds 2 & 3
20 a$(2)=""+a$(0)+"[146]":a$(3)=""+a$(1)+"[146]"
21 for i=0 to 3:print a$(i):next