From d46862a5bd2319c595b11427f781201ca063d194 Mon Sep 17 00:00:00 2001
From: Thomas Albers Raviola <thomas@thomaslabs.org>
Date: Tue, 3 Dec 2024 21:45:47 +0100
Subject: Add bootloader

---
 asm/crt0.asm | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'asm/crt0.asm')

diff --git a/asm/crt0.asm b/asm/crt0.asm
index 523c39e..fd03997 100644
--- a/asm/crt0.asm
+++ b/asm/crt0.asm
@@ -6,22 +6,22 @@
 	.area	_HEADER (ABS)
     .org    0x0000
 start:
+    di
     xor     a
     ld      i, a
     ld      sp, #0x0000
-    di
     ;; Init PIO and check for KEY2
     ld      a, #PIO_MODE_3
     out     (PORT_B_CTRL), a
     ld      a, #0x7F
     out     (PORT_B_CTRL), a
     in      a, (PORT_B_DATA)
-    and     #0x02               ; is KEY2 pressed? If so, start booloader
+    and     #KEY2               ; is KEY2 pressed? If so, start booloader
     jr      NZ, main
     ;; Load payload (bootloader)
-    ld      HL, #0x7000
-    ld      DE, #0x8000
-    ld      BC, #0x1000
+    ld      hl, #0x7000         ; src
+    ld      de, #0x8000         ; dest
+    ld      bc, #0x1000         ; size
     ldir
     ;; Start bootloader
     jp      0x8000
-- 
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