Simple, kernel-only, 64bit OS, early stage. https://git.2137697.xyz/rs-dos/atom?h=qemu 2026-11-01T15:33:05Z 2026-11-01T15:33:05Z salmonik salmonik@tuta.io 2026-11-01T15:33:05Z urn:sha1:50b4d2f0ab05901a847d8e1318152308265e579b EHCI (OptiPlex 7010 / Q77 and similar Intel PCH): - enumerate *both* EHCI controllers (00:1a.0 + 00:1d.0), not just the first - hub support: read the hub class descriptor, power/reset each port via hub class requests, read the child speed, then drive the child with split transactions carrying the hub's address and port (TT). On 7-series PCH the root port presents the integrated Rate Matching Hub (8087:0024, class 9) and the mouse/keyboard sit behind it; without this the driver stopped at "no HID mouse/keyboard endpoint in config". - HID mouse *and* keyboard, boot protocol + idle, per-device periodic QH chained into the frame list, per-device report buffers and counters - periodic re-arm follows the standard shape (qTD re-activated, Next-qTD re-linked); the HC owns the status/toggle overlay - DMA from the page allocator inside [16 MiB, 4 GiB): EHCI programs 32-bit addresses and the page bitmap spans all RAM - 2 ms recovery after SET_ADDRESS xHCI: - scratchpad buffers (HCSPARAMS2) and MaxSlotsEn > 1, with per-slot EP0 and interrupt rings plus per-slot device contexts - DMA from the page allocator instead of the heap allocator - boot protocol + idle, mouse + keyboard, first-report diagnostics - transfer events are routed to every device before matching a waiter, so a second device's enumeration cannot swallow an armed device's report shared: - rsnix/src/hid.rs: HID usage -> scancode-set-1 tables, one scancode FIFO feeding ps2::feed_scancode, per-device boot-keyboard report differ - WM input pump polls PS/2 -> UHCI -> EHCI -> xHCI - memory::alloc_pages_range(count, min, max) for bounded DMA allocations QEMU coverage: make test-usb (EHCI + xHCI, mouse + keyboard). QEMU's EHCI split path delivers only the first report for FS devices, so repeated-report delivery and the RMH path remain hardware-test items. 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. 2026-08-21T02:09:57Z salmonik salmonik@tuta.io 2026-08-21T02:09:57Z urn:sha1:235906cc36d9195b7b36d67f94f40cacccf030fd ox.saturating_sub(pad) / oy.saturating_sub(pad) — plain subtraction on usize wraps to usize::MAX when the window sits at x=0 or y=0, causing composite_rect to draw at the far end of the framebuffer instead of near the window. Also broke drag-to-move when stuck against the top or left edge. 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). 2026-08-21T01:30:35Z 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. 2026-08-19T16:46:35Z salmonik salmonik@tuta.io 2026-08-19T16:46:35Z urn:sha1:09a44f15678f27dd3d07f90e9ed0e71cf0e771ff - wm rewrite: chrome flag per window, create_home_window for the console (window 0, chrome-less, bottom-pinned, never closed), composite_rect fills desktop background then blits windows bottom-to-top, draw_window_intersect handles chrome-less windows, hit_test returns Content for chrome-less, destroy/move_window no-op for id 0. - vt: add window_params() so main.rs can wire the Terminal to wm window 0. - main.rs: create home terminal window 0 and attach Terminal after wm::init(). - Focus fix: focus(0) now stores CONSOLE sentinel (not raw 0) so focused() returns None when the home terminal has focus. Without this, closing a GUI window left FOCUSED=0, which tty::poll_key() interpreted as 'a GUI app has focus', spinning forever and swallowing all keyboard input. 2026-08-17T18:28:48Z salmonik salmonik@tuta.io 2026-08-17T18:28:48Z urn:sha1:7bd3459f4f8bae69509202e5aa0dbd04a42c656f - Refactor vt.rs into a per-instance Terminal struct (owned cell/rendered grids, cursor, ANSI parser, scroll state), rendering glyphs into a caller-owned pixel buffer with dirty-region blitting - Add gop buffer primitives (buffer_glyph_px, buffer_shift_up) and keep the legacy vt:: API as thin wrappers around the home terminal - Remove the now-obsolete scroll hook and shadow scroll path - Home terminal renders into its own buffer; window_id stays None until the WM integration lands 2026-08-17T17:08:47Z salmonik salmonik@tuta.io 2026-08-17T17:08:47Z urn:sha1:f4fab5a2b06c37df08d2d315bcb44d15af1786a4 The console's batched scroll (gop::shift_up_n) shifts the whole shared shadow, which dragged any composited window pixels up with it. Add a scroll hook so the window manager re-composites every visible window after a console scroll, restoring them at their fixed positions. 2026-08-17T16:58:06Z salmonik salmonik@tuta.io 2026-08-17T16:58:06Z urn:sha1:0e405aad6bc9f631b9b7a766fb1147fef943f492 - Track the active mouse gesture (none / window-move / app-stroke) so a press on the title bar becomes a move drag instead of leaking Move events into the app's content - Add move_window (clamped to the canvas, repaint old + new regions) - Always deliver MouseKind::Release so a stroke that ends outside the window still terminates