Added kinda working key input checking

boot/boot.s

@@ -1,6 +1,11 @@
 global _start
 extern long_mode_start
 
+%define ERR_NO_MB "0"
+%define ERR_NO_CPUID "1"
+%define ERR_NO_LONG_MODE "2"
+%define ERR_NO_V86 "3"
+
 section .text
 bits 32
 _start:
@@ -19,6 +24,7 @@ _start:
 
     call set_up_page_tables
     call enable_paging
+    call enable_sce
 
     ; load the 64-bit GDT
     lgdt [gdt64.pointer]
@@ -32,12 +38,29 @@ _start:
     mov dword [0xb8000], 0x2f4b2f4f
     hlt
 
+detect_v86:
+    smsw    ax
+    and     eax,1           ;CR0.PE bit
+    cmp eax, 1
+    je .no_v86
+    ret
+.no_v86:
+    mov al, ERR_NO_V86
+    jmp error
+
+enable_sce: ; System Call Extensions
+    mov ecx, 0xC0000080
+    rdmsr
+    or eax, 1
+    wrmsr
+    ret
+
 check_multiboot:
     cmp eax, 0x36d76289
     jne .no_multiboot
     ret
 .no_multiboot:
-    mov al, "0"
+    mov al, ERR_NO_MB
     jmp error
 
 check_cpuid:
@@ -73,7 +96,7 @@ check_cpuid:
     je .no_cpuid
     ret
 .no_cpuid:
-    mov al, "1"
+    mov al, ERR_NO_CPUID
     jmp error
 
 check_long_mode:
@@ -90,7 +113,7 @@ check_long_mode:
     jz .no_long_mode       ; If it's not set, there is no long mode
     ret
 .no_long_mode:
-    mov al, "2"
+    mov al, ERR_NO_LONG_MODE
     jmp error
 
 set_up_page_tables:

boot/grub.cfg

@@ -1,7 +1,9 @@
 set timeout=0
 set default=0
 
-
+insmod all_video
 menuentry "poppin" {
 	multiboot2 /boot/poppin.bin
+    set gfxpayload=1024x768x32
+    boot
 }