/* Addresses and magic numbers for miscellaneous ports. */ #ifndef _PORTS_H #define _PORTS_H #if (CHIP == INTEL) /* Miscellaneous ports. */ #define PCR 0x65 /* Planar Control Register */ #define PORT_B 0x61 /* I/O port for 8255 port B (kbd, beeper...) */ #define TIMER0 0x40 /* I/O port for timer channel 0 */ #define TIMER2 0x42 /* I/O port for timer channel 2 */ #define TIMER_MODE 0x43 /* I/O port for timer mode control */ #endif /* (CHIP == INTEL) */ #endif /* _PORTS_H */