WonderWitch/Filesystem

Mount points

FreyaOS mount points

Path	File data location	File table location	File table size (entries)	Description
/rom0	ROM (384 KB)	SRAM bank 3, $16F2	128
/ram0	SRAM bank 0 (64 KB)	SRAM bank 3, $06F2	64
/		SRAM bank 3, $02F2	16

/kern

The /kern folder is provided by FreyaOS.

File	Description
@ilib	IlibIL; can be overridden in /rom0
@proc	ProcIL; can be overridden in /rom0
@pfs	FsIL
@shell	Shell program; can be overridden in /rom0
@aux
about.txt	"About Freya"

File table entry format

Header contents

Offset	Length	Contents
0	16	File name; zero-terminated Shift-JIS string.
16	24	User-friendly file name; zero-terminated Shift-JIS string. FreyaOS displays the first 12 characters in its file selector.
40	4	File: Location in CPU address space (segment:offset)
44	4	File: Total file size, in bytes, excluding the header.
48	2	File: 128-byte (XMODEM) chunk count, rounded up. Directory: Number of total available entries. 0xFFFF (-1): Unallocated entry.
50	2	File mode
52	4	Modification time
56	4	File: TODO Directory: Pointer to FsIL implementation for directory
60	4	Offset to resource data, bytes excluding header; 0xFFFFFFFF if not present.

Timestamp format

Header contents

Bits	Contents
31 - 25	Year, 0 .. (starting from 2000)
24 - 21	Month, 1 .. 12
20 - 16	Day, 1 .. 31
15 - 11	Hour, 0 .. 23
10 - 5	Minute, 0 .. 59
0 - 4	Second, 0 .. 29 (in two-second units)

File modes

---

15  bit  8  7  bit  0
 ---- ----  ---- ----
 ???? ????  dlis mrwx
            |||| ||||
            |||| |||+- Execute
            |||| ||+-- Write
            |||| |+--- Read
            |||| +---- Prohibit mmap() use
            |||+------ StreamIL-related?
            ||+------- Intermediate library
            |+-------- Symbolic link
            +--------- Directory