Added California & Colarado laws, copied & modifed from https://github.com/c3d/db48x/blob/stable/LEGAL-NOTICE.md

source/kernel/features/keyboard.asm

@@ -20,8 +20,8 @@ os_read_input:
 keyboard_display_input:
 	pusha
 	mov di, ax
-	mov ax, bx ; Lazy TODO
-	mov cx, [prompt_length]
+	mov ax, bx
+	mov bx,20 
 
 	.loop:
 		jmp .check_key_pressed
@@ -40,11 +40,11 @@ keyboard_display_input:
 		cmp al, 1Bh
 		je .esc_key
 
-		cmp cx, 0
-		jb .check_key_pressed
+		dec bx
+
+		cmp bx, 0
+		jae .print_current_input ; Echo the user input back
 
-		call .print_current_input
-		dec cx
 		jmp .check_key_pressed
 
 	.esc_key:
@@ -57,8 +57,9 @@ keyboard_display_input:
 		ret ; Return to the parent function (whatever that may be)
 
 	.backspace:
-		jmp .move_cursor_back			; then .move_cursor_back
-		jmp .loop				; Else .loop
+		cmp bx, 20						; Cannot backspace if the cursor is at the start
+		jb .move_cursor_back			; then .move_cursor_back
+		jmp .loop						; Else .loop
 
 	.move_cursor_back:
 		mov ah, 0Eh
@@ -70,16 +71,15 @@ keyboard_display_input:
 		mov al, 08h
 		int 10h
 
+		inc bx
 		dec di
 		jmp .loop
 
 	.print_current_input: ; Echo back that character and return the key inputing
 		stosb
-
 		mov ah, 0Eh
 		int 10h
-
-		ret
+		jmp .check_key_pressed
 
 keyboard_get_cursor_pos: ;TODO
 	ret