Added barebones to build cartridge ROM

1 files changed, 39 insertions, 0 deletions

diff --git a/main.asm b/main.asm
new file mode 100644
index 0000000..6863d3d
--- /dev/null
+++ b/main.asm
@@ -0,0 +1,39 @@
+	processor	65c816
+
+	option  output-file,"main.lib"
+	option	output-format,lib
+
+	option	snes-irq,vbl,vbl_handler
+	option	snes-irq,irq,irq_handler
+
+	; Initialise SNES 
+	;
+	org	$8000
+	bank	0
+
+	include	init.asm
+
+	; Set the background color to green.
+	sep     #$20        ; Set the A register to 8-bit.
+	lda     #%10000000  ; Force VBlank by turning off the screen.
+	sta     $2100
+	lda     #%11100000  ; Load the low byte of the green color.
+	sta     $2122
+	lda     #%00000000  ; Load the high byte of the green color.
+	sta     $2122
+	lda     #%00001111  ; End VBlank, setting brightness to 15 (100%).
+	sta     $2100
+
+	; Loop forever.
+Forever:
+	jmp Forever
+
+
+; IRQ vectors
+;
+
+vbl_handler:
+	rti
+
+irq_handler:
+	rti