initial commit, asm operating system with the MikeOS bootloader

source/features/cli.asm

@@ -0,0 +1,49 @@
+os_start_cli:
+	pusha
+
+	mov si, prompt
+	call os_print_string
+
+	mov di, user_input
+
+	call os_display_input
+
+	popa
+	ret
+
+; ------------------------------------------------
+
+os_read_cli:
+	pusha
+
+.output_the_user_input:
+	call os_print_newline
+
+	mov si, command_result_text
+	call os_print_string
+
+	mov si, user_input
+	call os_print_string
+
+	call os_print_newline
+
+.check_matches:			; Check if the user input matches any internal commands
+	mov si, user_input
+	mov di, help_string
+	call os_compare_strings
+	cmp cl, 1
+	je print_help_text
+
+.finish:
+	call os_start_cli
+
+print_help_text:
+	mov si, help_text
+	call os_print_string_nl
+
+
+user_input times 20 db 0
+prompt db 'CrawOS > ', 0
+help_string db 'HELP', 0
+help_text db 'This is CrawOS', 0
+command_result_text db 'You typed: ', 0