.include "rom_header.s" _080000C0: .long 0 _080000C4: .short 0 _080000C6: .short 0 _080000C8: .long 0 .incbin "base_emerald.gba", 0xCC, 0x204 - 0xCC arm_func_start Init Init: mov r0, PSR_IRQ_MODE msr cpsr_cf, r0 ldr sp, sp_irq mov r0, PSR_SYS_MODE msr cpsr_cf, r0 ldr sp, sp_sys ldr r1, =INTR_VECTOR adr r0, InterruptMain str r0, [r1] ldr r1, =Main + 1 mov lr, pc bx r1 b Init .align 2, 0 sp_sys: .4byte IWRAM_END - 0x1c0 sp_irq: .4byte IWRAM_END - 0x60 .pool arm_func_end Init arm_func_start InterruptMain InterruptMain: mov r3, 0x4000000 add r3, r3, 0x200 ldr r2, [r3] ldrh r1, [r3, 0x8] mrs r0, spsr stmdb sp!, {r0-r3,lr} mov r0, 0 strh r0, [r3, 0x8] and r1, r2, r2, lsr 16 mov r12, 0 ands r0, r1, 0x4 bne _08000320 add r12, r12, 0x4 mov r0, 0x1 strh r0, [r3, 0x8] ands r0, r1, 0x80 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x40 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x2 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x1 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x8 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x10 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x20 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x100 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x200 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x400 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x800 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x1000 bne _08000320 add r12, r12, 0x4 ands r0, r1, 0x2000 strbne r0, [r3, -0x17C] _0800031C: bne _0800031C _08000320: strh r0, [r3, 0x2] bic r2, r2, r0 ldr r0, =0x03007868 ldr r0, [r0] ldrb r0, [r0, 0xA] mov r1, 0x8 mov r0, r1, lsl r0 orr r0, r0, 0x2000 orr r1, r0, 0xC6 and r1, r1, r2 strh r1, [r3] mrs r3, cpsr bic r3, r3, 0xDF orr r3, r3, 0x1F msr cpsr_cf, r3 ldr r1, =0x03002710 add r1, r1, r12 ldr r0, [r1] stmdb sp!, {lr} add lr, pc, 0 bx r0 ldmia sp!, {lr} mrs r3, cpsr bic r3, r3, 0xDF orr r3, r3, 0x92 msr cpsr_cf, r3 ldmia sp!, {r0-r3,lr} strh r2, [r3] strh r1, [r3, 0x8] msr spsr_cf, r0 bx lr .pool arm_func_end InterruptMain