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Be a bit more careful when setting up the timer for calibrating delay().

This commit is contained in:
scottr 1996-02-19 05:20:54 +00:00
parent ce56580f30
commit 8fe7b2bbb7
1 changed files with 7 additions and 3 deletions
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10
sys/arch/mac68k/mac68k/clock.c
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@ -1,4 +1,4 @@
/* $NetBSD: clock.c,v 1.20 1996/02/17 19:23:03 briggs Exp $ */
/* $NetBSD: clock.c,v 1.21 1996/02/19 05:20:54 scottr Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -472,7 +472,12 @@ mac68k_calibrate_delay()
int n;
int sum;
/* Disable VIA1 timer 1 interrupts and set up service routine */
via_reg(VIA1, vIER) = V1IF_T1;
mac68k_register_via1_t1_irq(delay_timer1_irq);
/* Set the timer for one-shot mode and enable interrupts */
via_reg(VIA1, vACR) &= ~ACR_T1LATCH;
via_reg(VIA1, vIER) = 0x80 | V1IF_T1;
for (sum = 0, n = 8; n > 0; n--) {
@ -482,9 +487,8 @@ mac68k_calibrate_delay()
sum += dummy_delay(1);
}
/* Disable timer interrupts and reset service routine */
via_reg(VIA1, vIER) = V1IF_T1;
via_reg(VIA1, vT1C) = 0;
via_reg(VIA1, vT1CH) = 0;
mac68k_register_via1_t1_irq(NULL);
/*