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| author | user <user@clank> | 2026-07-16 11:42:38 +0200 |
|---|---|---|
| committer | user <user@clank> | 2026-07-16 11:42:38 +0200 |
| commit | 057e5377af2d086917b9cd0ffb336231d7d098cb (patch) | |
| tree | fd814d32d88a0eede32a69f45b729310b182e13a /src/syscall.asm | |
| parent | jobs: background execution (&), non-blocking reap, spin demo (diff) | |
| download | gbos-057e5377af2d086917b9cd0ffb336231d7d098cb.tar.gz gbos-057e5377af2d086917b9cd0ffb336231d7d098cb.tar.xz gbos-057e5377af2d086917b9cd0ffb336231d7d098cb.zip | |
fs rewrite stage 1: persistent block device (bounce buffer, cart SRAM)
- blk.asm: read_block/write_block move 256-byte blocks between battery-backed
cart-RAM banks (8-11, the 'disk') and a WRAM bounce buffer. Banking is hidden
in those two routines; they inline the 'restore my bank' step so they never
touch the stack while the disk bank is mapped over the process's $A000 window
(the stack lives there too -- a call/ret would rug-pull it).
- format-on-first-boot: superblock magic in block 0; otherwise the disk persists.
- cart RAM bumped to 128 KiB (-r 4); process banks 0-7, disk banks 8-11.
- debug tool 'blk fill/peek' + syscalls to validate round-trip and persistence.
- verified: round-trip incl. cross-bank (block 100 -> bank 11); block survives a
reboot via .sav; magic intact (no reformat on 2nd boot).
- old WRAM 8-slot FS still backs the tools until stages 2-3.
Diffstat (limited to 'src/syscall.asm')
| -rw-r--r-- | src/syscall.asm | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/syscall.asm b/src/syscall.asm index 2fc66b6..29dc2b0 100644 --- a/src/syscall.asm +++ b/src/syscall.asm @@ -57,6 +57,8 @@ SyscallTable: dw sys_ps ; 20 PS dw sys_progname ; 21 PROGNAME dw sys_reap ; 22 REAP + dw sys_bfill ; 23 BFILL (debug) + dw sys_bpeek ; 24 BPEEK (debug) ; ----------------------------------------------------------------------------- sys_nosys: |