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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/programs.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/programs.asm')
| -rw-r--r-- | src/programs.asm | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/programs.asm b/src/programs.asm index e83d29e..53142ec 100644 --- a/src/programs.asm +++ b/src/programs.asm @@ -97,6 +97,9 @@ ProgKill: SECTION "prog_spin", ROMX[$4000], BANK[20] ProgSpin: INCBIN "c/spin.bin" +SECTION "prog_blk", ROMX[$4000], BANK[21] +ProgBlk: + INCBIN "c/blk.bin" ; ----------------------------------------------------------------------------- ; PROG_SH (bank 3) - the shell, now written in C (c/sh.c): parses >/</| and @@ -177,6 +180,8 @@ ProgramTable:: dw ProgKill db LOW(BANK(ProgSpin)), HIGH(BANK(ProgSpin)) dw ProgSpin + db LOW(BANK(ProgBlk)), HIGH(BANK(ProgBlk)) + dw ProgBlk ; ----------------------------------------------------------------------------- ; NameTable (ROM0) - command name -> program id, searched by sys_lookup. @@ -221,4 +226,6 @@ NameTable:: db PROG_KILL db "spin", 0 db PROG_SPIN + db "blk", 0 + db PROG_BLK db 0 |