2018-08-31 04:31:54 +00:00
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;license:MIT
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2019-06-19 02:40:17 +00:00
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;(c) 2018-9 by 4am & qkumba
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2018-08-31 04:31:54 +00:00
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;
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; ProRWTS2 glue functions
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;
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; Public functions
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; - LoadFile
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2019-06-19 02:40:17 +00:00
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; - LoadFileAt
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2018-09-01 01:04:00 +00:00
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; - LoadDHRFile
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2018-11-10 15:08:14 +00:00
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; - SaveSmallFile
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2018-11-26 19:43:39 +00:00
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; - CloseHandles
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; - SaveScreenHoles
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2018-08-31 04:31:54 +00:00
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;
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2018-11-10 15:08:14 +00:00
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; A general note about paths:
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2018-11-07 23:56:39 +00:00
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;
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2019-06-19 02:40:17 +00:00
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; LoadFile, LoadFileAt, LoadDHRFile, and SaveSmallFile support subdirectories.
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2018-11-12 15:06:15 +00:00
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; Directories are delimited by '/' like ProDOS. At program startup, we get the
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; current directory and save it; that is the PROGRAM ROOT DIRECTORY. All
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; pathnames are relative to the PROGRAM ROOT DIRECTORY. There is no concept of
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; setting or changing the 'current' directory.
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2018-11-10 15:08:14 +00:00
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;
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; The PROGRAM ROOT DIRECTORY is not guaranteed to be the root directory of the
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2018-11-12 15:06:15 +00:00
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; underlying ProDOS disk (although it can be). But it doesn't matter, because
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; these functions provide no access to any directory above the PROGRAM ROOT
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; DIRECTORY. You can't use '..' to access the parent directory, and you can't
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; start a pathname with '/' to access the root directory of the underlying
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; ProDOS disk.
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2018-11-10 15:08:14 +00:00
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;
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; Examples:
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2018-11-12 15:06:15 +00:00
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; 'PREFS.CONF' points to a file named 'PREFS.CONF' in the PROGRAM ROOT
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2018-11-10 15:08:14 +00:00
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; DIRECTORY.
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;
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2018-11-12 15:06:15 +00:00
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; 'FX/RIPPLE' points to a file named 'RIPPLE' in a directory named 'FX' in the
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2018-11-10 15:08:14 +00:00
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; PROGRAM ROOT DIRECTORY.
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2018-08-31 04:31:54 +00:00
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2018-10-28 15:44:26 +00:00
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gRootDirectory
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!word $FDFD
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2018-08-31 04:31:54 +00:00
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;------------------------------------------------------------------------------
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; LoadFile
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2018-11-12 15:06:15 +00:00
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; Load a file into memory all at once, using ProRWTS2, at the load address
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; specified by the file's ProDOS metadata. Hey, do you have a text file that
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; doesn't have a load address? This routine will happily load it at $0000, and
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; your program will likely crash as a result. So give it a load address as if
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; it were a binary file.
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;
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2018-11-10 15:08:14 +00:00
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; supports paths, see note
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2018-08-31 04:31:54 +00:00
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;
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2019-06-19 02:40:17 +00:00
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; in: gPathname contains filename
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2018-08-31 04:31:54 +00:00
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; out: all flags clobbered
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; all registers clobbered
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2019-06-19 02:40:17 +00:00
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; gPathname clobbered
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2018-08-31 04:31:54 +00:00
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;------------------------------------------------------------------------------
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LoadFile
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2019-06-19 02:40:17 +00:00
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+LDADDR gPathname
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2018-08-31 04:31:54 +00:00
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+STAY namlo ; set filename
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2019-06-20 01:10:56 +00:00
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+READ_RAM2_WRITE_RAM2
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2018-10-28 18:04:52 +00:00
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jsr traverse ; go to subdirectory, set up filename for read
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lda #cmdread ; read (instead of write)
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sta reqcmd
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lda #0 ; 0 = read into main memory
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sta auxreq
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2019-06-18 03:05:19 +00:00
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sta sizelo
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sta sizehi ; 0 = query load address
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jsr hddopendir ; call ProRWTS2
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lda ldrlo2
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sta ldrlo
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lda ldrhi2
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sta ldrhi
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dec sizehi ; read entire file (ProRWTS2 will figure out exact size)
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2019-06-20 01:10:56 +00:00
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jsr hddopendir ; exit via ProRWTS2 (must re-open the file after query)
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+READ_RAM1_WRITE_RAM1
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rts
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2019-06-18 03:05:19 +00:00
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;------------------------------------------------------------------------------
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; LoadFileAt
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; Load a file into memory all at once, using ProRWTS2, at the load address
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; specified by the passed parameter.
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;
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; supports paths, see note
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;
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2019-06-19 02:40:17 +00:00
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; in: gPathname contains filename
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; stack contains 2 bytes of parameters:
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; +1 address to load file
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2019-06-18 03:05:19 +00:00
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; out: all flags clobbered
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; all registers clobbered
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2019-06-19 02:40:17 +00:00
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; gPathname clobbered
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2019-06-18 03:05:19 +00:00
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; stack set to next instruction after parameters
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;------------------------------------------------------------------------------
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LoadFileAt
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2019-06-19 02:40:17 +00:00
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+PARAMS_ON_STACK 2
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2019-06-18 03:05:19 +00:00
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+LDPARAM 1
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+STAY ldrlo ; set load address
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2019-06-19 02:40:17 +00:00
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+LDADDR gPathname
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+STAY namlo ; set filename
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2019-06-20 01:10:56 +00:00
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+READ_RAM2_WRITE_RAM2
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2019-06-18 03:05:19 +00:00
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jsr traverse ; go to subdirectory, set up filename for read
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lda #cmdread ; read (instead of write)
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sta reqcmd
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lda #0 ; 0 = read into main memory
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sta auxreq
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2018-10-28 18:04:52 +00:00
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lda #$FF ; read entire file (ProRWTS2 will figure out exact size)
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sta sizehi
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2019-06-20 01:10:56 +00:00
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jsr hddopendir ; exit via ProRWTS2
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+READ_RAM1_WRITE_RAM1
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rts
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2018-10-28 18:04:52 +00:00
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;------------------------------------------------------------------------------
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; LoadDHRFile
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; load .A2FC file (uncompressed double hi-res graphics) into memory
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; all at once, using ProRWTS2
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; first $2000 bytes of file are loaded into auxiliary memory $2000..$3FFF
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; second $2000 bytes of file are loaded into main memory $2000..$3FFF
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2018-11-12 15:06:15 +00:00
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;
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2018-11-10 15:08:14 +00:00
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; supports paths, see note
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2018-10-28 18:04:52 +00:00
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;
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2019-06-19 02:40:17 +00:00
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; in: gPathname contains filename
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2018-10-28 18:04:52 +00:00
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; out: all flags clobbered
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; all registers clobbered
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; stack set to next instruction after parameters
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;------------------------------------------------------------------------------
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LoadDHRFile
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2019-06-19 02:40:17 +00:00
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+LDADDR gPathname
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2018-10-28 18:04:52 +00:00
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+STAY namlo ; set filename
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2019-06-20 01:10:56 +00:00
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+READ_RAM2_WRITE_RAM2
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2018-10-28 18:04:52 +00:00
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jsr traverse ; go to subdirectory, set up filename for read
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lda #$00 ; read first $2000 bytes
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sta sizelo
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2019-06-18 03:05:19 +00:00
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sta ldrlo
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2018-10-28 18:04:52 +00:00
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lda #$20
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sta sizehi
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2019-06-18 03:05:19 +00:00
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asl
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sta ldrhi
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2018-10-28 18:04:52 +00:00
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lda #1 ; 1 = read into aux memory
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sta auxreq
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lda #cmdread ; read (instead of write)
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sta reqcmd
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jsr hddopendir ; call ProRWTS2
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lda #$20 ; read next $2000 bytes
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sta sizehi
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2019-06-18 03:05:19 +00:00
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asl
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sta ldrhi
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2018-10-28 18:04:52 +00:00
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dec auxreq ; 0 = read into main memory
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2018-11-01 05:48:35 +00:00
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clc ; not a subdirectory
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2019-06-20 01:10:56 +00:00
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jsr hddrdwrpart ; call ProRWTS2
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+READ_RAM1_WRITE_RAM1
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rts
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2018-10-28 18:04:52 +00:00
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2018-11-10 15:08:14 +00:00
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;------------------------------------------------------------------------------
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; SaveSmallFile
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; Save a file into memory all at once, using ProRWTS2.
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; /!\ Only first block (512 bytes) is written. Keep those files small. /!\
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; /!\ All 512 bytes are written to disk. Clear buffer before calling. /!\
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2018-11-12 15:06:15 +00:00
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;
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2018-11-10 15:08:14 +00:00
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; supports paths, see note
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;
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2019-06-19 02:40:17 +00:00
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; in: stack contains 2 bytes of parameters:
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; +1 address of data buffer
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2018-11-10 15:08:14 +00:00
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; out: all flags clobbered
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; all registers clobbered
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; stack set to next instruction after parameters
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;------------------------------------------------------------------------------
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SaveSmallFile
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2019-06-19 02:40:17 +00:00
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+PARAMS_ON_STACK 2
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2018-11-10 15:08:14 +00:00
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+LDPARAM 1
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+STAY ldrlo ; set data buffer address for ProRWTS2
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2019-06-19 02:40:17 +00:00
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+LDADDR gPathname
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+STAY namlo ; set filename for ProRWTS2
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2019-06-20 01:10:56 +00:00
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+READ_RAM2_WRITE_RAM2
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2018-11-10 15:08:14 +00:00
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jsr traverse ; go to subdirectory, set up filename for read
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2019-06-18 03:05:19 +00:00
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;;if the write address is always a fixed value then we can discard the query
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lda #cmdread ; read (instead of write)
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sta reqcmd
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lda #0 ; 0 = read into main memory
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sta sizelo
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sta sizehi ; 0 = query load address
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jsr hddopendir ; call ProRWTS2
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lda ldrlo2
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sta ldrlo
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lda ldrhi2
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sta ldrhi
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2018-11-10 15:08:14 +00:00
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lda #cmdwrite ; write (instead of read)
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sta reqcmd
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2019-06-18 03:05:19 +00:00
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sta sizelo ; non-zero
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2019-06-20 01:10:56 +00:00
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jsr hddopendir ; exit via ProRWTS2 (must re-open the file after query)
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+READ_RAM1_WRITE_RAM1
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rts
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2018-11-10 15:08:14 +00:00
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;------------------------------------------------------------------------------
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; traverse [private]
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;
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; in: (namlo) points to length-prefixed pathname+filename
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; out: all flags clobbered
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; all registers clobbered
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;------------------------------------------------------------------------------
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2018-10-28 18:04:52 +00:00
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traverse
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2018-10-28 15:44:26 +00:00
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+LDAY gRootDirectory
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2018-11-17 23:50:13 +00:00
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sta (reloc + unrhddblocklo - unrelochdd) + 1
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sty (reloc + unrhddblockhi - unrelochdd) + 1
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2018-10-28 15:44:26 +00:00
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sta @myreadblock+1
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sty @myreadblock+3 ; reset 'root' directory (saved at program start)
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2018-09-01 01:04:00 +00:00
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;search for '/' character in filename
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ldx #0
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ldy #0
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lda (namlo), y
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tay
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- inx
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dey
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bmi @go ; no '/', just do the read
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lda (namlo), y
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cmp #'/'
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bne -
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sty sizelo
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txa
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pha
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@myreadblock
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@myx80_parms
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ldx #2
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lda #0
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jsr hddreaddirsel
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lda #NAME_LENGTH
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sta bloklo
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lda #>(hdddirbuf - 1)
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sta blokhi
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;there can be only one page crossed, so we can increment here
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@mynextent1
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inc blokhi
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@mynextent
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ldy #0
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lda (bloklo), y
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pha
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and #$0f
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tax
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-- iny
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lda (bloklo), y
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cmp (namlo), y
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beq @myfoundname
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;match failed, move to next directory in this block, if possible
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- pla
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@myskiphdr
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clc
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lda bloklo
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adc #ENTRY_SIZE
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sta bloklo
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bcs @mynextent1
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cmp #$ff ;4 + ($27 * $0d)
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bne @mynextent
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;read next directory block when we reach the end of this block
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2018-10-29 23:23:43 +00:00
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lda hdddirbuf + NEXT_BLOCK_LO
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ldx hdddirbuf + NEXT_BLOCK_HI
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2018-09-01 01:04:00 +00:00
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bcs +
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@myfoundname
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dex
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bne --
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;parse path until last directory is seen
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iny
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lda (namlo), y
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cmp #'/'
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bne -
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pla
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and #$20 ;Volume Directory Header XOR subdirectory
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bne @myskiphdr
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tya
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eor #$ff
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adc sizelo
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2018-08-31 04:31:54 +00:00
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sta sizelo
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2018-09-01 01:04:00 +00:00
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clc
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tya
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adc namlo
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sta namlo
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;cache block number of current directory
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;as starting position for subsequent searches
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ldy #(KEY_POINTER + 1)
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lda (bloklo), y
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tax
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dey
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lda (bloklo), y
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sta (reloc + unrhddblocklo - unrelochdd) + 1
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stx (reloc + unrhddblockhi - unrelochdd) + 1
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+ sta @myx80_parms + 1
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stx @myx80_parms + 3
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++ lda sizelo
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bne @myreadblock
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tay
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pla
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sta (namlo), y
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@go
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2018-10-28 18:04:52 +00:00
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rts
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2018-10-31 05:59:03 +00:00
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2018-11-26 19:43:39 +00:00
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;------------------------------------------------------------------------------
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; promote [private]
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;
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; tiny ProDOS-style interface for ProRWTS
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; in: whatever ProDOS expects for the supported functions
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; out: carry clear, A=0
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; X, Y, and other flags clobbered
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;------------------------------------------------------------------------------
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2018-11-07 23:56:39 +00:00
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promote
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!pseudopc $bf00 {
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2019-07-03 22:21:49 +00:00
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php
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sei
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2018-12-19 22:53:24 +00:00
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lda $c012
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2019-07-03 22:21:49 +00:00
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!byte $24
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2019-07-09 20:42:37 +00:00
|
|
|
!if * != $bf06 {
|
|
|
|
!error "$BF06 misplaced (",*,")"
|
|
|
|
}
|
2018-11-07 23:56:39 +00:00
|
|
|
rts ;clock interface, must be RTS on real ProDOS if program uses $20x
|
2018-12-19 22:53:24 +00:00
|
|
|
|
2019-07-03 22:21:49 +00:00
|
|
|
asl
|
2018-12-19 22:53:24 +00:00
|
|
|
lda $c011
|
2019-07-09 20:42:37 +00:00
|
|
|
bit $c083
|
|
|
|
jmp ProDOS_LC
|
|
|
|
!text "4Q"
|
|
|
|
!if * != $bf13 {
|
|
|
|
!error "$BF13 misplaced (",*,")"
|
|
|
|
}
|
2019-01-10 17:42:50 +00:00
|
|
|
!byte $c1
|
|
|
|
!word $c2d1, $c3d1, $c4d1, $c5d1, $c6d1, $c7d1
|
2019-07-09 20:42:37 +00:00
|
|
|
ProDOS_LC
|
|
|
|
bit $c083
|
|
|
|
jmp ProDOS_enter
|
2018-11-07 23:56:39 +00:00
|
|
|
ProDOS_exit
|
2018-12-19 22:53:24 +00:00
|
|
|
sta $c082, x
|
|
|
|
ProDOS_savedX
|
|
|
|
ldx #$d1
|
2018-12-26 02:50:55 +00:00
|
|
|
ProDOS_savedY
|
|
|
|
ldy #$d1
|
2019-07-03 22:21:49 +00:00
|
|
|
plp
|
|
|
|
clc
|
2019-07-09 20:42:37 +00:00
|
|
|
!byte $24
|
2019-01-10 17:42:50 +00:00
|
|
|
ProDOS_unit
|
2019-07-09 20:42:37 +00:00
|
|
|
!if * != $bf30 {
|
|
|
|
!error "$BF30 misplaced (",*,")"
|
|
|
|
}
|
2019-01-10 17:42:50 +00:00
|
|
|
!byte $d1
|
|
|
|
|
2019-07-09 20:42:37 +00:00
|
|
|
lda #0
|
|
|
|
rts
|
|
|
|
|
2019-07-03 22:21:49 +00:00
|
|
|
ProDOS_fatal ;only for debugging, will be removed
|
|
|
|
bit $c081
|
|
|
|
pha
|
|
|
|
jsr $fe89
|
2018-11-07 23:56:39 +00:00
|
|
|
jsr $fe93
|
2018-11-11 04:25:50 +00:00
|
|
|
pla
|
|
|
|
jsr $fdda
|
2018-12-19 22:53:24 +00:00
|
|
|
jmp $ff65
|
2019-08-21 03:13:17 +00:00
|
|
|
*=$bf58
|
|
|
|
!fill $18
|
|
|
|
|
2018-11-07 23:56:39 +00:00
|
|
|
ProDOS_prefix=$bfd0
|
|
|
|
; !fill $2e
|
|
|
|
}
|
|
|
|
end_promote
|
|
|
|
|
2018-11-26 19:43:39 +00:00
|
|
|
;------------------------------------------------------------------------------
|
2019-06-23 18:24:09 +00:00
|
|
|
; SaveOrRestoreScreenHoles
|
2018-11-26 19:43:39 +00:00
|
|
|
; preserve screen hole contents across demo execution
|
|
|
|
; to avoid crashing later on disk access
|
|
|
|
;
|
|
|
|
; in: nothing
|
|
|
|
; out: all flags clobbered
|
|
|
|
; all registers clobbered
|
|
|
|
;------------------------------------------------------------------------------
|
|
|
|
|
2019-06-23 18:24:09 +00:00
|
|
|
SaveOrRestoreScreenHoles
|
2018-11-26 19:43:39 +00:00
|
|
|
lda #4
|
|
|
|
sta namhi
|
|
|
|
ldx #0
|
|
|
|
stx namlo
|
|
|
|
sta bloklo
|
|
|
|
-- ldy #$78
|
|
|
|
- lda (namlo),y
|
|
|
|
pha
|
|
|
|
lda holey_stuff,x
|
|
|
|
holepatch ;sta->lda
|
|
|
|
lda (namlo),y
|
|
|
|
pla
|
|
|
|
sta holey_stuff,x
|
|
|
|
inx
|
|
|
|
tya
|
|
|
|
eor #$80
|
|
|
|
tay
|
|
|
|
bmi -
|
|
|
|
iny
|
|
|
|
bpl -
|
|
|
|
inc namhi
|
|
|
|
dec bloklo
|
|
|
|
bne --
|
|
|
|
rts
|
|
|
|
holey_stuff
|
|
|
|
!fill 64
|