Simple, kernel-only, 64bit OS, early stage. https://git.2137697.xyz/rs-dos/atom?h=qemu 2026-08-21T18:13:59Z 2026-08-21T18:13:59Z salmonik salmonik@tuta.io 2026-08-21T18:13:59Z urn:sha1:2f4cf666c0c7bd224932fa48973e7334360c1de3 wm: FOCUSED is now a plain window id — window 0 (home terminal) is an ordinary focusable window in the z-order. The CONSOLE sentinel (usize::MAX) and the focused()==0 special cases are gone; focus_console() is an alias for focus(0). Desktop clicks focus window 0. The WM input pump routes every key unconditionally: IRQ ring -> pump -> focused window's owner; nothing polls the scancode rings directly any more. tty: read_line() reads from the calling task's message queue (the old global-ring read_line and the duplicate read_line_from_queue are merged); raw mode (read_byte/try_read_byte) consumes the same queue; interrupt_pressed drains the queue instead of the ring. shell: task 0 owns home terminal window 0 and blocks on its queue like a windowed shell; cat/hexdump stdin paths pass the home terminal handle. sched: watchdog comments updated (shell parks on recv_blocking). Verified in QEMU: F1 spawns terminals, F2 cycles focus home->term1-> term2, keystrokes land only in the focused window, ^C cancels a line, edit runs raw over the queue and exits to a working prompt; test-disk regression PASS. 2026-08-21T02:04:20Z salmonik salmonik@tuta.io 2026-08-21T02:04:20Z urn:sha1:df13e7bf4d56d0563628472f8716afb01a96cfac - draw_window_border(): 1px border around every window except the root. Blue (TITLE_BG_FOCUS) when focused, grey (TITLE_BG) when not. - focus() / focus_console(): composite the full window area + border pad on both the old and new focused windows (was title-bar-only before). - flush(): include border pad in the damage rectangle. - move_window(): redraw border area at old and new positions. - Remove redundant term.flush() from tty Focus handler (focus() covers it). 2026-08-21T01:32:07Z salmonik salmonik@tuta.io 2026-08-21T01:32:07Z urn:sha1:956093be4f3b7a0fe86a523e5f9d9e74b9a77e59 focus() only composites the title bar — the window content stays stale until the next write. Call term.flush() on Focus(true) so the full window is re-composited immediately when switching to it. 2026-08-21T01:30:35Z salmonik salmonik@tuta.io 2026-08-21T01:30:35Z urn:sha1:b418c26050870b900ff56d5a47f32209795aaf4a - tty: read_line_from_queue() now takes &mut Terminal and handles TaskMsg::Focus: Focus(true) sets ACTIVE to the terminal, Focus(false) clears it. This fixes the bug where the console shell's gop_print! output was redirected to the soft terminal even after focus switched away from it. - shell: run_windowed() passes the terminal through to read_line_from_queue. - wm: remove noisy per-key debug logging from pump_main. 2026-08-20T11:47:10Z salmonik salmonik@tuta.io 2026-08-20T11:47:10Z urn:sha1:cb17c57452ccd2ccca77e99098402d4b9f61c0a5 Architecture: - vt: ACTIVE terminal redirect — when set, all gop_print!/put_char/write_str go there instead of HOME. Terminal::from_buffer() renders into a WM-owned pixel buffer. - tty: read_line_from_queue() — canonical-mode line input from the task's own message queue (TaskMsg::Key). Returns None on Close. - shell: run_windowed() — same shell as the console but reads from the message queue. Returns on ^D or window close. - wm: F1 calls SPAWN_TERMINAL_CB (set by rsdos). No shell logic in the WM. - rsdos: terminal_task callback + terminal_entry task — creates a 640x400 chrome window, wires up Terminal::from_buffer, sets ACTIVE, runs shell::run_windowed(), cleans up on exit. - shell: 'term' debug command that invokes the callback directly and logs each step to serial. 2026-08-17T16:56:04Z salmonik salmonik@tuta.io 2026-08-17T16:56:04Z urn:sha1:5558e3509d020a0e021a77f0617044497b2f2aee - Add the wm window-manager facility per ADR 0004: overlapping pixel-surface windows, damage-rectangle compositing, WM-drawn title bar, focus/minimize/close, and F1-F4 keybindings - Add gop shadow compositing primitives and vt::repaint_region so the console stays layer 0 beneath windows - Route mouse (absolute coords, press/release edges) and keyboard (focus-aware input pump) to the focused window - Add the rspaint drawing-program crate (pen, 8 colors, clear) and shell draw/windows/restore commands - Extend TaskMsg with AppMouse/Focus/Close and document the design in CONTEXT.md + ADR 0004 2026-08-17T12:53:52Z salmonik salmonik@tuta.io 2026-08-17T12:53:52Z urn:sha1:be868a43185826b02bf6d091019bb779678525bb - Add polled EHCI (USB2) and UHCI (USB1.1) host-controller drivers with HID boot mouse support, wired into cursor polling and the 'usb' shell cmd - Add USB Legacy ownership handoff (claim_usb_legacy) plus config_write_byte - Harden boot: verify the PIT/timer ticks before shell entry, EOI stray interrupts in the LAPIC to stop interrupt storms, bound PS/2 controller waits, and INTx-disable AHCI (polled driver) - Add boot stage markers, klog screen echo, and QR lock; scheduler mark_shell_running; NO_USB stopgap to keep BIOS USB-Legacy input alive - alloc_pages_above for DMA buffers that must avoid low conventional memory - Expand DEBUG_NOTES with EHCI/QEMU bring-up findings 2026-08-01T16:03:20Z salmonik salmonik@tuta.io 2026-08-01T16:03:20Z urn:sha1:c2b6daeaaf1da5c6f81300e954f2b3592c0668c0 - klog: MAX_LINE 128 -> 512 (lens widened u8 -> u16) — long serial_println lines (panics, boot messages) are no longer cut at 128 bytes; they print in full and the terminal wraps them at the screen edge - tty: LINE_BUF_SIZE 256 -> 1024 — typed command lines longer than 256 chars were silently dropped at the buffer limit; now they echo and submit in full (the terminal already wraps the echo mid-typing) - pager (-p): screenfuls now count wrapped rows, not lines — a line wider than the terminal occupies ceil(len/cols) rows, so the pause lands at a real screen boundary instead of overflowing it 2026-08-01T01:44:57Z salmonik salmonik@tuta.io 2026-08-01T01:44:57Z urn:sha1:63d01e9d8eb6f3ccb6a96b7c577834276cf51add Warning cleanup (cargo check + clippy now 0 across the workspace): - Migrate all 21 static_mut_refs sites to &raw mut accessors (fat, gop, ps2, vt, ahci, interrupts, memory) so edition 2024 won't deny them - panic = "abort" profiles: bare cargo check/build now works without nightly/-Zbuild-std - Wire TICKS in the timer ISR (it was never incremented, so the vt scroll batching trigger was dead code) - Clippy: efi_main becomes unsafe extern "efiapi" with a # Safety doc, KeyBuf::new uses inline-const array repeat (no interior-mutable const), editor main loop is a while-let, PIT control byte regrouped - [workspace.lints.clippy] allows result_unit_err + needless_range_loop (deliberate kernel style); large_enum_variant allowed on LineInput - Drop now-stale static_mut_refs allow from the rsdos bin FAT32 correctness fixes (both pre-existing, exposed by the SFN fix): - Unique 8.3 short names: to_8_3() never disambiguated collisions, so files sharing a long-name prefix got identical SFNs and fsck reported duplicate directory entries. Add dir_short_names() + unique_short_name() (~N tails, Windows-style) and force LFN when the SFN changes. - Multi-cluster directories: scan_dir/dir_short_names stopped at the first 0x00 slot, hiding every entry written into a chained cluster (writes failed with 'cannot write', duplicate SFNs accumulated); add_dir_entry now packs the cluster (0xE5 deleted-markers) before extending so other FAT readers (mtools, Windows) see the continuation too. Other: delete dead fields (Disk.fis, Volume.fat_count), drop timer_irq/ keyboard_irq/rendered, refresh_and_exit is a documented unsafe fn, CONTEXT .md corrected (stable toolchain, IRQ input, 4-crate layout), .gitignore excludes .pi-subagents artifacts. Validated: cargo check/clippy/fmt clean, make test-disk PASS on fresh and reused images (incl. two directory-chain extensions and ~10 SFN tails), editor round-trip smoke test PASS. 2026-07-31T16:08:45Z salmonik salmonik@tuta.io 2026-07-31T16:08:45Z urn:sha1:075c87d52a4d90c0f00f8ba7ba849677771a9be3 Streaming output scrolled one framebuffer push per line (each a ~3-8 MB write-only copy). The vt now scrolls the logical grid instantly in RAM and defers the display shift: N pending scrolls are pushed together as one shift_up_n — one push regardless of batch size. - vt: PENDING_SCROLLS counter; scroll_up shifts CELLS only; flush renders nothing while pending (the diff would otherwise re-rasterise the whole screen per line); sync_scroll() does one gop::shift_up_n + RENDERED mirror + normal diff flush (which re-blits just the newly exposed rows and the cursor). - Sync triggers: batch of 16 rows, ~40 ms of stream pause (100 Hz TICKS), any CSI sequence (full-screen apps like the editor render immediately), clear_all/set_cursor_visible, interactive input (tty read_line/read_byte), and the shell before each prompt. - gop: shift_up → shift_up_n(n) (one shadow memcpy + one push). Verified in QEMU: mmap/hexdump streaming renders in coherent batches with the prompt syncing at the end; clear wipes clean; the editor scrolls and redraws immediately (45-line file, gutter + status bar intact, cursor correct); save/exit/cat round-trip unchanged. Release and dev builds pass.