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Imanol-Mikel Barba Sabariego
1 parent 5a805765
Showing 4 changed files with 26 additions and 0 deletions
floppy.img
second_binary.asm
second_binary.bin
usb.img
@@ -21,6 +21,27 @@ print_char:
 	INT 	0x10            ; Signal video interrupt to BIOS
 	RETN
  
+execute_sector:
+	PUSH	ebp
+	MOV		ebp, esp
+	PUSH	ax
+	PUSH	bx
+	PUSH	cx
+	PUSH	dx
+	MOV		ax, [10 + ebp]	; base address
+	MOV		es, ax
+	MOV 	al, [8 + ebp]	; num
+	MOV		cl, [6 + ebp]	; offset
+	MOV     ah, 2 			; Function read
+    XOR     ch, ch 			; cylinder
+    XOR		dh, dh 			; head
+    MOV 	dl, 0x81 		; drive
+    INT     0x13
+    XOR		si, si
+    PUSH	es
+    PUSH	bx
+	RETF
+
 Start:
 XOR 	ax, ax
 MOV 	ds, ax
@@ -30,6 +51,11 @@ XOR		bx, bx
 for_start_0:
 	MOV 	si, str
 	CALL 	print_string
+	PUSH	0x7c0; Base address, offset is 0
+	PUSH	1 ; num
+	PUSH	1 ; offset
+	XOR		bx, bx;
+	;CALL 	execute_sector
 	;JMP 	for_start_0
 	JMP	$