lessons 8, 9, 10, entering 32-bit mode

10-32bit-enter/32bit-main.asm

@@ -0,0 +1,27 @@
+[org 0x7c00] ; bootloader offset
+    mov bp, 0x9000 ; set the stack
+    mov sp, bp
+
+    mov bx, MSG_REAL_MODE
+    call print ; This will be written after the BIOS messages
+
+    call switch_to_pm
+    jmp $ ; this will actually never be executed
+
+%include "../05-bootsector-functions-strings/boot_sect_print.asm"
+%include "../09-32bit-gdt/32bit-gdt.asm"
+%include "../08-32bit-print/32bit-print.asm"
+%include "32bit-switch.asm"
+
+[bits 32]
+BEGIN_PM: ; after the switch we will get here
+    mov ebx, MSG_PROT_MODE
+    call print_string_pm ; Note that this will be written at the top left corner
+    jmp $
+
+MSG_REAL_MODE db "Started in 16-bit real mode", 0
+MSG_PROT_MODE db "Loaded 32-bit protected mode", 0
+
+; bootsector
+times 510-($-$$) db 0
+dw 0xaa55