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- /* Copyright (C) 1986 by M. J. Shannon, Jr.
- ** Permission to distribute for non-commercial uses granted as long as this
- ** notice is retained. Violators will be prosecuted.
- */
-
- #include "mpu.h"
-
- /* mpu_put(byte):
- ** put out a single byte command & wait for the ack.
- */
-
- void
- mpu_put(cmd)
- unsigned char cmd;
- {
- long counter;
-
- (void) mpu_drr();
- outp(MPUP_COMD, cmd);
- for (counter = 0xFFL; counter != 0; --counter)
- {
- if (mpu_dsr()) /* timed out */
- break;
- if (mpu_dget() == CMD_ACK)
- break;
- }
- }
-