#define IRQ_DISABLE do { asm(bfset #0x0200,SR); asm(nop); } while (0)
#define IRQ_ENABLE do { asm(bfclr #0x0200,SR); asm(nop); } while (0)
#define IRQ_DISABLE do { asm(bfset #0x0200,SR); asm(nop); } while (0)
#define IRQ_ENABLE do { asm(bfclr #0x0200,SR); asm(nop); } while (0)