sl0pboy.git/src/main.c, branch master

render: --shrink N - downscale the half-block live display (1-4)

2026-07-18T18:41:19Z

Decimates the LCD N x N before the half-block encode so the monitor pane takes 160/N cols x 72/N rows. Display-only: capture, recording and sixel still read the full-res framebuffer. Decimation is max-luma pick, not box-average: terminal fonts are 1px bright strokes on dark background, and averaging dims them into grey mush (the 'blurry font' regression). Keeping the brightest source pixel of each block preserves stroke brightness and hue.

main: allow --sock (control/debug socket) in headless mode

2026-07-17T18:22:13Z

The control socket was only opened on the windowed path, so a --headless GB couldn't be inspected. A scriptable, invisible GB is exactly the one you most want to peek into - reading kernel WRAM over the debug socket is how the TCP field-offset corruption got pinned down. Open it in the headless loop too and poll it each frame; close it on exit.

main: silence stderr while the live sixel display is up

2026-07-17T17:45:03Z

Runtime chatter (link reconnect notices, input debug, cart warnings) was landing mid-sixel-stream and corrupting the picture. Redirect fd 2 to /dev/null for the duration of the display loop; restored on exit so the final stats line still prints. Startup errors before the display begins are unaffected.

main: --serial-sock PATH - link port over a unix socket (net + live display)

2026-07-17T11:22:00Z

The serial fds are serviced by cpu_step in every mode, so wiring them to a connected unix socket lets networking run alongside a live display (--sixel / terminal) - unlike --headless, which needs stdio for the serial. The emulator connects to PATH (retrying ~1s so a launcher can listen first) and uses it non-blocking with no EOF-exit; it overrides the headless stdio serial. Pairs with gbos tools/netboot, which listens on PATH, brings up a TUN+NAT, and bridges the socket <-> TUN. In windowed mode the OSK is the console and the link port is pure network - cleanly separated. Verified: host pings the GB 3/3 over the socket link.

rebrand: gbc -> sl0pboy (binary, README, tooling)

2026-07-16T23:08:48Z

main: options-first CLI with --help, and wire up display/boot flags

2026-07-16T22:27:46Z

- Rewrite argument handling: the ROM is now the final argument and options precede it (parsed in argv[1..argc-2] so optional-value flags never swallow the ROM). Add grouped --help/-h, unknown-option errors, and clear 'missing value'/'no ROM' diagnostics. - Add --chrome, --palette/--green, and --bios flags; set the display/capture options before the --shot and recording paths so screenshots and recordings honor them. Make --shot dump the composited capture frame. - gbctl: pass the ROM last when spawning the emulator. - gitignore the (copyrighted) bios/ directory; document all new flags.

main/gb: --keys button-script harness + serial_no_eof for OSK testing

2026-07-16T14:06:49Z

--keys "udlrabse." plays scripted joypad taps (each char = one button held 10 frames then released 10, so the guest sees a clean edge); pairs with --headless --shot to drive on-screen input and capture the result. When --keys is active, serial-RX EOF stays pending instead of sending $04, so a shell blocked on read waits for OSK input instead of exiting.

main: --shot with --headless dumps final LCD on exit

2026-07-16T13:44:57Z

Lets scripted runs feed stdin to the serial console AND capture the resulting screen, e.g. printf 'ls\nexit\n' | gbc rom.gb --headless --shot 0 out.ppm Previously --shot ran frames with no stdin, so anything waiting on input (a shell) only showed its first prompt.

headless: $ED opcode = clean power-off (exit + battery save)

2026-07-16T10:49:02Z

The unused SM83 opcode $ED now sets gb->poweroff, which breaks the headless loop so the normal cart_free()->cart_save() path runs. Lets a guest OS shut the emulator down cleanly (and flush its .sav) instead of relying on an external timeout/SIGTERM, which could SIGKILL before the save. run_frame() also stops on poweroff so exit is immediate.

headless: interactive TTY mode (raw stdin) for driving a guest OS live

2026-07-16T09:25:43Z

When stdin is a terminal, --headless now disables canonical mode + local echo so keystrokes reach the guest immediately and only the guest echoes (no doubled chars). Piped/redirected stdin is untouched (scripted input still works). Keep ISIG so Ctrl-C quits; restore termios on exit. VMIN=1 so a no-data non-blocking read is EAGAIN, not a 0-byte read the serial layer would misread as EOF.