Fuck up the kernel, i have other ideas now

kernel/main.asm

@@ -0,0 +1,36 @@
+		cpu 8086
+		org 0x7C00
+
+		jmp init
+
+%include	"kernel/fd.asm"
+%include	"kernel/con.asm"
+
+entry_int21:	iret
+
+init:		; install int 21h handler
+		mov ax, cs
+		mov ds, ax
+		mov es, ax
+		mov word [4*0x21], entry_int21
+		mov word [4*0x21+2], cs
+
+		mov word [fd_table], con_ftab
+
+		; print banner
+		mov dx, .banner
+		mov cx, 13
+		mov bx, 0
+		call con_write
+
+		; execute shell
+		mov ax, 0x4B00
+		mov dx, .shellfn
+		int 0x21
+
+.hlt:		hlt
+		jmp .hlt
+
+.banner:	db "rdos kernel", 0x0A, 0x0D
+
+.shellfn:	db "SHELL.COM", 0