18 lines
516 B
C
18 lines
516 B
C
/* 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 */
|