X-Git-Url: http://git.dujemihanovic.xyz/projects?a=blobdiff_plain;f=boot.s;h=51be5d92dd8ee19426be4092d2aaed2c1e96f46d;hb=eec791adfbaddde2f5724e0f5c7319e7d2aaef0e;hp=eb115d0324dd6a2e8e83d94aee9d197d71299392;hpb=73dce672626ceb415b49ff059092c48a2f7c3de3;p=nameless-os.git

diff --git a/boot.s b/boot.s
index eb115d0..51be5d9 100644
--- a/boot.s
+++ b/boot.s
@@ -1,21 +1,69 @@
 	bits 16 ; boot sectors run in real mode
 	org 7c00h ; boot sector is loaded at 0x7c00
 
+_start
 	mov di, printing_numbers
 	call print
 
+	or bl, 1
 	mov dx, 0DEADh ; number to print
 	call print_word
+	
+	mov di, space
+	call print
+	
+	xor bl, bl
 	mov dx, 0BEEFh
 	call print_word
 
-	mov di, goodbye
+	mov di, waiting
 	call print
 
-	jmp $
+	mov di, keystroke
+	mov bl, 1
+
+.loop
+	mov ah, 0
+	int 16h
+	cmp ah, 1Ch
+	je .enterpressed
+	jmp .continue
+	cmp ah, 0Eh
+	je .backspace
+	jmp .continue
+.enterpressed
+	pusha
+	mov ah, 0Eh
+	mov al, 0Dh
+	int 10h
+	mov al, 0Ah
+	int 10h
+	popa
+	jmp .loop
+.backspace
+	pusha
+	mov ah, 03h
+	mov bh, 0
+	int 10h
+	dec dl
+	mov ah, 02h
+	int 10h
+	mov ah, 0Eh
+	mov al, ' '
+	int 10h
+	mov ah, 02h
+	int 10h
+	popa
+	jmp .loop
+.continue
+	mov [keystroke], al
+	call print
+	jmp .loop
 
-printing_numbers: db "Printing some random hex numbers", 0
-goodbye: db "Thank you for your attention", 0
+printing_numbers db "Printing some random hex numbers", 0
+waiting db "I await keystrokes", 0
+keystroke db "$", 0
+space db " ", 0
 
 %include "print.s"