mirror of
https://github.com/irmen/prog8.git
synced 2024-12-27 05:29:38 +00:00
389 lines
11 KiB
Lua
389 lines
11 KiB
Lua
%import textio
|
|
%import syslib
|
|
|
|
; Note: this code is compatible with C64 and CX16.
|
|
|
|
diskio {
|
|
|
|
sub directory(ubyte drivenumber) -> ubyte {
|
|
; -- Prints the directory contents of disk drive 8-11 to the screen. Returns success.
|
|
|
|
c64.SETNAM(1, "$")
|
|
c64.SETLFS(13, drivenumber, 0)
|
|
void c64.OPEN() ; open 13,8,0,"$"
|
|
if_cs
|
|
goto io_error
|
|
void c64.CHKIN(13) ; use #13 as input channel
|
|
if_cs
|
|
goto io_error
|
|
|
|
repeat 4 {
|
|
void c64.CHRIN() ; skip the 4 prologue bytes
|
|
}
|
|
|
|
; while not key pressed / EOF encountered, read data.
|
|
ubyte status = c64.READST()
|
|
while not status {
|
|
ubyte low = c64.CHRIN()
|
|
ubyte high = c64.CHRIN()
|
|
txt.print_uw(mkword(high, low))
|
|
txt.chrout(' ')
|
|
ubyte @zp char
|
|
repeat {
|
|
char = c64.CHRIN()
|
|
if char==0
|
|
break
|
|
txt.chrout(char)
|
|
}
|
|
txt.chrout('\n')
|
|
void c64.CHRIN() ; skip 2 bytes
|
|
void c64.CHRIN()
|
|
status = c64.READST()
|
|
if c64.STOP2()
|
|
break
|
|
}
|
|
|
|
io_error:
|
|
status = c64.READST()
|
|
c64.CLRCHN() ; restore default i/o devices
|
|
c64.CLOSE(13)
|
|
|
|
if status and status != 64 { ; 64=end of file
|
|
txt.print("\ni/o error, status: ")
|
|
txt.print_ub(status)
|
|
txt.chrout('\n')
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
|
|
; internal variables for the iterative file lister / loader
|
|
ubyte list_suffixmatch
|
|
ubyte list_pattern_size
|
|
ubyte list_skip_disk_name
|
|
uword list_pattern
|
|
uword list_blocks
|
|
ubyte iteration_in_progress = false
|
|
str list_filename = "?" * 32
|
|
|
|
|
|
; ----- get a list of files (uses iteration functions internally -----
|
|
|
|
sub list_files(ubyte drivenumber, uword pattern, ubyte suffixmatch, uword name_ptrs, ubyte max_names) -> ubyte {
|
|
; -- fill the array 'name_ptrs' with (pointers to) the names of the files requested.
|
|
uword names_buffer = memory("filenames", 512)
|
|
uword buffer_start = names_buffer
|
|
ubyte files_found = 0
|
|
if lf_start_list(drivenumber, pattern, suffixmatch) {
|
|
while lf_next_entry() {
|
|
@(name_ptrs) = lsb(names_buffer)
|
|
name_ptrs++
|
|
@(name_ptrs) = msb(names_buffer)
|
|
name_ptrs++
|
|
names_buffer += strcopy(diskio.list_filename, names_buffer) + 1
|
|
files_found++
|
|
if names_buffer - buffer_start > 512-18
|
|
break
|
|
if files_found == max_names
|
|
break
|
|
}
|
|
lf_end_list()
|
|
}
|
|
return files_found
|
|
}
|
|
|
|
; ----- iterative file lister functions -----
|
|
|
|
sub lf_start_list(ubyte drivenumber, uword pattern, ubyte suffixmatch) -> ubyte {
|
|
; -- start an iterative file listing with optional prefix or suffix name matching.
|
|
; note: only a single iteration loop can be active at a time!
|
|
lf_end_list()
|
|
list_pattern = pattern
|
|
list_suffixmatch = suffixmatch
|
|
list_skip_disk_name = true
|
|
iteration_in_progress = true
|
|
if pattern==0
|
|
list_pattern_size = 0
|
|
else
|
|
list_pattern_size = strlen(pattern)
|
|
|
|
c64.SETNAM(1, "$")
|
|
c64.SETLFS(12, drivenumber, 0)
|
|
void c64.OPEN() ; open 12,8,0,"$"
|
|
if_cs
|
|
goto io_error
|
|
void c64.CHKIN(12) ; use #12 as input channel
|
|
if_cs
|
|
goto io_error
|
|
|
|
repeat 4 {
|
|
void c64.CHRIN() ; skip the 4 prologue bytes
|
|
}
|
|
|
|
if c64.READST()==0
|
|
return true
|
|
|
|
io_error:
|
|
lf_end_list()
|
|
return false
|
|
}
|
|
|
|
sub lf_next_entry() -> ubyte {
|
|
; -- retrieve the next entry from an iterative file listing session.
|
|
; results will be found in list_blocks and list_filename.
|
|
; if it returns false though, there are no more entries (or an error occurred).
|
|
|
|
if not iteration_in_progress
|
|
return false
|
|
|
|
repeat {
|
|
void c64.CHKIN(12) ; use #12 as input channel again
|
|
|
|
uword nameptr = &list_filename
|
|
ubyte blocks_lsb = c64.CHRIN()
|
|
ubyte blocks_msb = c64.CHRIN()
|
|
|
|
if c64.READST()
|
|
goto close_end
|
|
|
|
list_blocks = mkword(blocks_msb, blocks_lsb)
|
|
|
|
; read until the filename starts after the first "
|
|
while c64.CHRIN()!='\"' {
|
|
if c64.READST()
|
|
goto close_end
|
|
}
|
|
|
|
; read the filename
|
|
repeat {
|
|
ubyte char = c64.CHRIN()
|
|
if char==0
|
|
break
|
|
if char=='\"'
|
|
break
|
|
@(nameptr) = char
|
|
nameptr++
|
|
}
|
|
|
|
@(nameptr) = 0
|
|
|
|
while c64.CHRIN() {
|
|
; read the rest of the entry until the end
|
|
}
|
|
|
|
void c64.CHRIN() ; skip 2 bytes
|
|
void c64.CHRIN()
|
|
|
|
if not list_skip_disk_name {
|
|
if list_pattern_size {
|
|
; do filename matching
|
|
if list_suffixmatch
|
|
rightstr(list_filename, filename, list_pattern_size)
|
|
else
|
|
leftstr(list_filename, filename, list_pattern_size)
|
|
if strcmp(filename, list_pattern)==0
|
|
return true
|
|
} else
|
|
return true
|
|
}
|
|
list_skip_disk_name = false
|
|
}
|
|
|
|
close_end:
|
|
lf_end_list()
|
|
return false
|
|
}
|
|
|
|
sub lf_end_list() {
|
|
; -- end an iterative file listing session (close channels).
|
|
if iteration_in_progress {
|
|
c64.CLRCHN()
|
|
c64.CLOSE(12)
|
|
iteration_in_progress = false
|
|
}
|
|
}
|
|
|
|
|
|
; ----- iterative file loader functions -----
|
|
|
|
sub f_open(ubyte drivenumber, uword filenameptr) -> ubyte {
|
|
; -- open a file for iterative reading with f_read
|
|
; note: only a single iteration loop can be active at a time!
|
|
f_close()
|
|
|
|
c64.SETNAM(strlen(filenameptr), filenameptr)
|
|
c64.SETLFS(11, drivenumber, 0)
|
|
void c64.OPEN() ; open 11,8,0,"filename"
|
|
if_cc {
|
|
iteration_in_progress = true
|
|
void c64.CHKIN(11) ; use #11 as input channel
|
|
if_cc
|
|
return true
|
|
}
|
|
f_close()
|
|
return false
|
|
}
|
|
|
|
sub f_read(uword bufferpointer, uword num_bytes) -> uword {
|
|
; -- read from the currently open file, up to the given number of bytes.
|
|
; returns the actual number of bytes read. (checks for End-of-file and error conditions)
|
|
if not iteration_in_progress
|
|
return 0
|
|
|
|
uword actual = 0
|
|
void c64.CHKIN(11) ; use #11 as input channel again
|
|
repeat num_bytes {
|
|
ubyte data = c64.CHRIN()
|
|
@(bufferpointer) = data
|
|
bufferpointer++
|
|
actual++
|
|
ubyte status = c64.READST()
|
|
if status==64
|
|
f_close() ; end of file, close it
|
|
if status
|
|
return actual
|
|
}
|
|
return actual
|
|
}
|
|
|
|
sub f_read_exact(uword bufferpointer, uword num_bytes) {
|
|
; -- read from the currently open file, the given number of bytes. File must contain enough data!
|
|
; doesn't check for error conditions or end of file, to make the read as fast as possible.
|
|
if not iteration_in_progress
|
|
return
|
|
|
|
void c64.CHKIN(11) ; use #11 as input channel again
|
|
repeat num_bytes {
|
|
@(bufferpointer) = c64.CHRIN()
|
|
bufferpointer++
|
|
}
|
|
}
|
|
|
|
sub f_close() {
|
|
; -- end an iterative file loading session (close channels).
|
|
if iteration_in_progress {
|
|
c64.CLRCHN()
|
|
c64.CLOSE(11)
|
|
iteration_in_progress = false
|
|
}
|
|
}
|
|
|
|
|
|
sub status(ubyte drivenumber) -> uword {
|
|
; -- retrieve the disk drive's current status message
|
|
uword messageptr = &filename
|
|
c64.SETNAM(0, filename)
|
|
c64.SETLFS(15, drivenumber, 15)
|
|
void c64.OPEN() ; open 15,8,15
|
|
if_cs
|
|
goto io_error
|
|
void c64.CHKIN(15) ; use #15 as input channel
|
|
if_cs
|
|
goto io_error
|
|
|
|
while not c64.READST() {
|
|
@(messageptr) = c64.CHRIN()
|
|
messageptr++
|
|
}
|
|
|
|
io_error:
|
|
@(messageptr) = 0
|
|
c64.CLRCHN() ; restore default i/o devices
|
|
c64.CLOSE(15)
|
|
return filename
|
|
}
|
|
|
|
|
|
sub save(ubyte drivenumber, uword filenameptr, uword address, uword size) -> ubyte {
|
|
c64.SETNAM(strlen(filenameptr), filenameptr)
|
|
c64.SETLFS(1, drivenumber, 0)
|
|
uword end_address = address + size
|
|
|
|
%asm {{
|
|
lda address
|
|
sta P8ZP_SCRATCH_W1
|
|
lda address+1
|
|
sta P8ZP_SCRATCH_W1+1
|
|
stx P8ZP_SCRATCH_REG
|
|
lda #<P8ZP_SCRATCH_W1
|
|
ldx end_address
|
|
ldy end_address+1
|
|
jsr c64.SAVE
|
|
php
|
|
ldx P8ZP_SCRATCH_REG
|
|
plp
|
|
}}
|
|
|
|
ubyte result=0
|
|
if_cc
|
|
result = c64.READST()==0
|
|
|
|
c64.CLRCHN()
|
|
c64.CLOSE(1)
|
|
|
|
return result
|
|
}
|
|
|
|
sub load(ubyte drivenumber, uword filenameptr, uword address_override) -> uword {
|
|
c64.SETNAM(strlen(filenameptr), filenameptr)
|
|
ubyte secondary = 1
|
|
uword end_of_load = 0
|
|
if address_override
|
|
secondary = 0
|
|
c64.SETLFS(1, drivenumber, secondary)
|
|
%asm {{
|
|
stx P8ZP_SCRATCH_REG
|
|
lda #0
|
|
ldx address_override
|
|
ldy address_override+1
|
|
jsr c64.LOAD
|
|
bcs +
|
|
stx end_of_load
|
|
sty end_of_load+1
|
|
+ ldx P8ZP_SCRATCH_REG
|
|
}}
|
|
|
|
c64.CLRCHN()
|
|
c64.CLOSE(1)
|
|
|
|
if end_of_load
|
|
return end_of_load - address_override
|
|
|
|
return 0
|
|
}
|
|
|
|
|
|
str filename = "0:??????????????????????????????????????"
|
|
|
|
sub delete(ubyte drivenumber, uword filenameptr) {
|
|
; -- delete a file on the drive
|
|
ubyte flen = strlen(filenameptr)
|
|
filename[0] = 's'
|
|
filename[1] = ':'
|
|
memcopy(filenameptr, &filename+2, flen+1)
|
|
c64.SETNAM(flen+2, filename)
|
|
c64.SETLFS(1, drivenumber, 15)
|
|
void c64.OPEN()
|
|
c64.CLRCHN()
|
|
c64.CLOSE(1)
|
|
}
|
|
|
|
sub rename(ubyte drivenumber, uword oldfileptr, uword newfileptr) {
|
|
; -- rename a file on the drive
|
|
ubyte flen_old = strlen(oldfileptr)
|
|
ubyte flen_new = strlen(newfileptr)
|
|
filename[0] = 'r'
|
|
filename[1] = ':'
|
|
memcopy(newfileptr, &filename+2, flen_new)
|
|
filename[flen_new+2] = '='
|
|
memcopy(oldfileptr, &filename+3+flen_new, flen_old+1)
|
|
c64.SETNAM(3+flen_new+flen_old, filename)
|
|
c64.SETLFS(1, drivenumber, 15)
|
|
void c64.OPEN()
|
|
c64.CLRCHN()
|
|
c64.CLOSE(1)
|
|
}
|
|
}
|