Spiffy up console detection

.gitignore

@@ -0,0 +1,5 @@
+/*.gb
+/*.map
+/*.sym
+/build
+/.tags

.tags

@@ -1,7 +0,0 @@
-!_TAG_FILE_FORMAT	2	/extended format; --format=1 will not append ;" to lines/
-!_TAG_FILE_SORTED	1	/0=unsorted, 1=sorted, 2=foldcase/
-!_TAG_OUTPUT_MODE	u-ctags	/u-ctags or e-ctags/
-!_TAG_PROGRAM_AUTHOR	Universal Ctags Team	//
-!_TAG_PROGRAM_NAME	Universal Ctags	/Derived from Exuberant Ctags/
-!_TAG_PROGRAM_URL	https://ctags.io/	/official site/
-!_TAG_PROGRAM_VERSION	0.0.0	//

source/home/start.asm

@@ -24,28 +24,23 @@ _start:
     di
 
     ; Attempt to detect console model
-    cp $ff
+    ld c, console_agb
-    jr z, .console_mgb
     cp $11
     jr z, .console_cgb
-
+    dec c
-    ld a, console_dmg
+    dec c  ; console_mgb
-    jr .console_end
+    cp $ff
-
+    jr z, .console_end
-.console_mgb
+    dec c  ; console_dmg
-    ld a, console_mgb
     jr .console_end
 
 .console_cgb
     dec b
     jr z, .console_agb
-    ld a, console_cgb
+    dec c  ; console_cgb
-    jr .console_end
-
-.console_agb
-    ld a, console_agb
 
 .console_end
+    ld a, c
     ldh [h_console], a
 
     xor a