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RTEMS 6.1-rc2
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24#define BSP_ASM_IRQ_VECTOR_BASE 0x20
26#define PIC_MASTER_COMMAND_IO_PORT 0x20
27#define PIC_SLAVE_COMMAND_IO_PORT 0xa0
28#define PIC_MASTER_IMR_IO_PORT 0x21
29#define PIC_SLAVE_IMR_IO_PORT 0xa1
36#define PIC_OCW3_RIS 0x01
37#define PIC_OCW3_RR 0x02
38#define PIC_OCW3_P 0x04
40#define PIC_OCW3_SEL 0x08
42#define PIC_OCW3_SMM 0x20
43#define PIC_OCW3_ESMM 0x40