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 |
|
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 |
Location in CPU address space (segment:offset)
|
| 44 |
4 |
Total file size, in bytes, excluding the header.
|
| 48 |
2 |
XMODEM chunk count - above file size divided by 128, then rounded up.
|
| 50 |
2 |
File mode
|
| 52 |
4 |
Modification time
|
| 56 |
4 |
TODO
|
| 60 |
4 |
Offset to resource data, bytes excluding header; -1 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
