Some minor improvements

src/boot.asm

@@ -68,7 +68,14 @@ start:
 
     mov bl, byte [driveNumber]
 
-    ; Far jump to the kernel
+    ; Setup video mode
+    mov ax, 0x0003
+    int 0x10
+    mov ah, 0x0b
+    mov bx, 0x0001
+    int 0x10
+
+    ; Far jump to the kernel (never returns)
     jmp KERNEL_LOC:0x0000
 
 readFail:

src/fs/edit.asm

@@ -2,7 +2,7 @@
 
 launch:
     pusha
-    call resetTextMode
+    call clearText
 
     mov di, 0x0e60      ; Offset in vidmem (2nd to last line)
     mov si, statusBarMsg
@@ -36,7 +36,7 @@ getHexCh:
     mov [hexByte], al
     jmp getHexCh
 .putByte:
-    cmp di, hexCode+256 
+    cmp di, hexCode+256
     jge getHexCh    ; Max length reached
     rol byte [hexByte], 4
     or byte [hexByte], al
@@ -60,6 +60,9 @@ getHexCh:
     call print
     jmp getHexCh
 .runInput:
+    mov si, runMsg
+    call print
+
     pusha
     call hexCode       ; Call the code
     popa
@@ -101,12 +104,12 @@ return:
     jmp 0x2000:0x0000
 
 ; - Includes -
-%include "./src/lib/screen.asm"
 %include "./src/lib/print.asm"
 ; ------------
 
 statusBarMsg: db " -- HEX -- ", 0
 controlsMsg: db "'$' to execute code; '!' to quit", 0
+runMsg: db ENDL, ENDL, 0
 ranMsg: db ENDL, ENDL, " - Finished Execution - ", ENDL, 0
 
 backChars: db 8,8,8,'  ',8,8,0

src/kernel.asm

@@ -9,6 +9,7 @@ start:
     xor bx, bx
 
     call resetTextMode
+    call clearText
 
     ; Print start message
     mov si, startMsg
@@ -84,7 +85,7 @@ runCommand:
 
     mov di, clearCmd
     call .cmp
-    je clearScreen
+    je clear
 
     mov di, exitCmd
     call .cmp
@@ -239,8 +240,8 @@ help:
 ;
 ; Clears the screen
 ;
-clearScreen:
+clear:
-    call resetTextMode
+    call clearText
     jmp input
 
 ;

src/lib/print.asm

@@ -78,11 +78,26 @@ printHexByte:
 hexString: db "0x0000", 0
 
 ;
-; Clears the screen
+; Clears the screen in text mode
+; Assumes VGA text 3 - 80x25, 16 color
 ;
-clear:
+clearText:
     pusha
-    ; TODO: Make this function
+    push es
+    mov ax, 0x0b800
+    mov es, ax
+    xor di, di      ; es:di - b800:0000
+
+    mov al, ' '     ; Fill with spaces
+    mov ah, 0x17    ; White on blue
+    mov cx, 80*25 
+    rep stosw 
+
+    mov ah, 2
+    xor dx, dx      ; Set cursor to 0,0
+    int 0x10
+
+    pop es
     popa
     ret