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-rwxr-xr-xhome/header.asm66
1 files changed, 66 insertions, 0 deletions
diff --git a/home/header.asm b/home/header.asm
new file mode 100755
index 00000000..ae77c7e4
--- /dev/null
+++ b/home/header.asm
@@ -0,0 +1,66 @@
+; rst vectors (called through the rst instruction)
+
+SECTION "rst0", ROM0[$0000]
+ di
+ jp Start
+
+SECTION "rst8", ROM0[$0008] ; rst FarCall
+ jp FarCall_hl
+
+SECTION "rst10", ROM0[$0010] ; rst Bankswitch
+ ldh [hROMBank], a
+ ld [MBC3RomBank], a
+ ret
+
+SECTION "rst18", ROM0[$0018]
+ rst $38
+
+SECTION "rst20", ROM0[$0020]
+ rst $38
+
+SECTION "rst28", ROM0[$0028] ; 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[$0030]
+ ld l, a
+ pop de
+ jp hl
+
+SECTION "rst38", ROM0[$0038]
+ rst $38
+
+
+; Game Boy hardware interrupts
+
+SECTION "vblank", ROM0[$0040]
+ jp VBlank
+
+SECTION "lcd", ROM0[$0048]
+ jp LCD
+
+SECTION "timer", ROM0[$0050]
+ reti
+
+SECTION "serial", ROM0[$0058]
+ jp Serial
+
+SECTION "joypad", ROM0[$0060]
+ jp Joypad
+
+
+; Game Boy cartridge header
+
+SECTION "Header", ROM0[$0100]
+
+Start::
+ nop
+ jp _Start
+
+; The cartridge header data is filled in by rgbfix.
+; This makes sure it doesn't get used.
+ ds $0150 - @