gbos.git - gbos - a tiny Unix-flavored OS for the Game Boy Color (kernel, shell, coreutils in C, RAM filesystem)

	Commit message (Collapse)	Author	Age	Files	Lines
*	osk: bind START to Enter (CR)	user	5 days	1	-0/+7
\| \| \| \| \|	START now returns $0A regardless of cursor position, so you can submit a command without navigating to the CR key. The CR key still works too.
*	sh: handle backspace in readline; prompt is now '#'	user	5 days	1	-1/+14
\| \| \| \| \| \| \| \| \| \| \| \|	readc() returning $08/$7F now drops the last char from the command buffer (and emits one $08 so the terminal erases it) instead of storing the raw byte. Previously "lz<bksp>s" left the buffer as "lz\x08s", so the command "ls" was reported "not found" even though the screen showed "ls". Also change the shell prompt from '$' to '#'. osk: B button types the selected key SHIFTED (uppercase a-z). A types the key as shown (lowercase/digit/symbol); B on a letter subtracts 32 for the uppercase glyph (the font already has A-Z). Non-letters are unchanged.
*	osk: wrap the cursor around all four edges	user	5 days	1	-19/+27
\| \| \| \| \| \|	Left at column 0 wraps to the last column (and vice-versa); up at the top row wraps to the bottom (and vice-versa). Makes reaching far keys quicker - e.g. the Enter/space area is one UP away from the top row.
*	osk: toggle-able on-screen keyboard on the window layer	user	5 days	1	-0/+339
	A joypad-driven keyboard that costs zero permanent screen space: it lives on the GB window layer, so SELECT just flips LCDC bit 5 (window enable) and the terminal's background layer underneath is never disturbed. - src/joypad.asm: read $FF00 with edge detection (wPadCur/Prev/New). - src/osk.asm: 3x20 key grid (letters, digits, space, punctuation, plus Enter/Backspace) built once into spare bank-1 VRAM tiles (104+) and laid out on the $9C00 window map, docked to the bottom 3 rows. The highlighted key is a palette swap on its window attribute byte (CGB BG palette 1 = inverted), so moving the cursor is 1-2 attribute writes with no tile rebuilding. SELECT toggles, d-pad moves, A types. - KGetc's console poll loop now polls the joypad and osk_handle each iteration; a key press returns its byte to the reader exactly like a serial byte, so the shell is oblivious to the input source. Verified in the emulator (via --keys): SELECT shows the keyboard, the highlight tracks the d-pad, and typing "ls"+Enter runs the command and lists the files; a second SELECT hides it and reclaims the full 18 rows. Known limitation: the OSK overlays the bottom 3 terminal rows, so if the prompt has scrolled to the very bottom the current input line can be hidden. A follow-up can add a scroll region (terminal uses rows 0-14 while the OSK is up). Input over serial still works unchanged.