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VAX: Fix interval timer to properly synchronize with calibrated clock ticks

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This commit is contained in:
Mark Pizzolato 2016-12-14 09:30:44 -08:00
parent 76d5c34d85
commit 7022f0c1b2
1 changed files with 4 additions and 2 deletions
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6
VAX/vax_sysdev.c
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@ -56,6 +56,8 @@
#include "vax_defs.h"
#include <math.h>
#ifdef DONT_USE_INTERNAL_ROM
#define BOOT_CODE_FILENAME "ka655x.bin"
#else /* !DONT_USE_INTERNAL_ROM */
@ -1653,7 +1655,7 @@ tmr_time_d = ((~tmr_tir[tmr] + 1) * sim_timer_inst_per_sec ()) / 1000000.0;
if ((tmr_time_d == 0.0) || (tmr_time_d > (double)0x7FFFFFFF))
tmr_time = 0x7FFFFFFF;
else
tmr_time = (int32)tmr_time_d;
tmr_time = (int32)ceil(tmr_time_d);
sim_debug (DBG_SCHD, &sysd_dev, "tmr_sched(tmr=%d) - tmr_sav=%u, clk_time=%d, tmr_time=%d, tmr_poll=%d\n", tmr, tmr_sav[tmr], clk_time, tmr_time, tmr_poll);
if (tmr_time > clk_time) {
@ -1664,7 +1666,7 @@ if (tmr_time > clk_time) {
queue the interval timer behind the event for the clock tick. */
tmr_time = clk_time;
sim_clock_coschedule_tmr (&sysd_unit[tmr], TMR_CLK, tmr_time);
sim_clock_coschedule_tmr (&sysd_unit[tmr], TMR_CLK, 1);
}
else
sim_activate (&sysd_unit[tmr], tmr_time);