prog8/examples/diskdir-sys50000.p8

48 lines
1.2 KiB
Lua

%target c64
%import textio
%import syslib
%zeropage basicsafe
%option no_sysinit
%launcher none
%address 50000
; This example shows the directory contents of disk drive 8.
; You load it with LOAD "diskdir-sys50000",8,1
; and then call it with SYS 50000.
main {
sub start() {
txt.print("directory of disk drive #8:\n\n")
diskdir(8)
}
sub diskdir(ubyte drivenumber) {
c64.SETNAM(1, "$")
c64.SETLFS(1, drivenumber, 0)
c64.OPEN() ; open 1,8,0,"$"
c64.CHKIN(1) ; use #1 as input channel
repeat 4 {
void c64.CHRIN() ; skip the 4 prologue bytes
}
; while not key pressed / EOF encountered, read data.
while not (@($c6) | c64.STATUS) {
txt.print_uw(mkword(c64.CHRIN(), c64.CHRIN()))
txt.chrout(' ')
ubyte @zp char
do {
char = c64.CHRIN()
txt.chrout(char)
} until char==0
txt.chrout('\n')
repeat 2 {
void c64.CHRIN() ; skip 2 bytes
}
}
c64.CLOSE(1)
c64.CLRCHN() ; restore default i/o devices
}
}