Create home/header.asm

Contains what was previously in:
- home/rst.asm
- home/interrupts.asm
- home.asm

All of this should be in a static location in the ROM so it kinda makes
sense together.

1 files changed, 66 insertions, 0 deletions

diff --git a/home/header.asm b/home/header.asm
new file mode 100644
index 000000000..3531d2851
--- /dev/null
+++ b/home/header.asm
@@ -0,0 +1,66 @@
+; rst vectors (called through the rst instruction)
+
+SECTION "rst0", ROM0
+	di
+	jp Start
+
+SECTION "rst8", ROM0 ; rst FarCall
+	jp FarCall_hl
+
+SECTION "rst10", ROM0 ; rst Bankswitch
+	ldh [hROMBank], a
+	ld [MBC3RomBank], a
+	ret
+
+SECTION "rst18", ROM0
+	rst $38
+
+SECTION "rst20", ROM0
+	rst $38
+
+SECTION "rst28", ROM0 ; rst JumpTable
+	push de
+	ld e, a
+	ld d, 0
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+; SECTION "rst30", ROM0
+	ld l, a
+	pop de
+	jp hl
+
+SECTION "rst38", ROM0
+	rst $38
+
+
+; Game Boy hardware interrupts
+
+SECTION "vblank", ROM0
+	jp VBlank
+
+SECTION "lcd", ROM0
+	jp LCD
+
+SECTION "timer", ROM0
+	jp Timer
+
+SECTION "serial", ROM0
+	jp Serial
+
+SECTION "joypad", ROM0
+	jp JoypadInt
+
+
+; Game Boy cartridge header
+
+SECTION "Header", ROM0
+
+Start::
+	nop
+	jp _Start
+
+; The cartridge header data is filled in by rgbfix.
+; This makes sure it doesn't get used.
+	ds $0150 - $0104