xex needs more work

lib/xex.nasm

@@ -2,7 +2,8 @@
 ; This is the "program" to execute a program 
 xex: 
 	pusha ; save state before program
-    
+    sub sp, 2048
+    mov [.program_executable_buffer], sp
     call os_clear_screen
     call lsfs_list_files_command
     
@@ -74,14 +75,14 @@ xex:
     mov [.fileindex_for_open_file], ax ; save the file index
 
     
-    ;mov ax, [.fileindex_for_open_file]
-    ;mov bx, [.program_executable_buffer]
-    ;call lsfs_read_file
+    mov ax, [.fileindex_for_open_file]
+    mov bx, [.program_executable_buffer]
+    call lsfs_read_file
 
-    ;mov [.program_executable_buffer], ax
+    mov [.program_executable_buffer], ax
 
     ; I guess we should have something like 
-    ; call ax ; here. We want to execute the file that we just have benn loaded in memory 
+    call ax ; here. We want to execute the file that we just have benn loaded in memory 
     		  ; The executable should make use of the global systemcall table. 
     		  ; That is what we are trying to get to work here. 
 
@@ -90,5 +91,5 @@ xex:
 
 
 .welcome_xex_enter_fileindex db 'Enter program index to execute: ', 0
-.program_executable_buffer db 0
-.fileindex_for_open_file dw 0
+.fileindex_for_open_file dw 0
+.program_executable_buffer db 0