5687f9227b
Unbound the TODR value from the 100hz clock tick interrupt. TODR now behaves like the original battery backed-up clock and runs with the wall clock, not the simulated instruction clock (except when running ROM diagnostics).
Two operational modes are available:
- Default VMS mode, which is similar to the previous
behavior in that without initializing the TODR it
would default to the value VMS would set it to if
VMS knew the correct time. This would be correct
almost all the time unless a VMS disk hadn't been
booted from for more than a year. This mode
produces strange time results for non VMS OSes on
each system boot.
- OS Agnostic mode. This mode behaves precisely like
the VAX780 TODR and works correctly for all OSes.
This mode is enabled by attaching the TODR to a
battery backup state file for the TOY clock
(i.e. sim> attach TODR TOY_CLOCK). When operating
in OS Agnostic mode, the TODR will initially start
counting from 0 and be adjusted differently when an
OS specifically writes to the TODR. VMS will prompt
to set the time on the initial boot unless the SYSGEN
parameter TIMEPROMPTWAIT is set to 0.
82 lines
3.7 KiB
C
82 lines
3.7 KiB
C
/* sim_timer.h: simulator timer library headers
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Copyright (c) 1993-2008, Robert M Supnik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Robert M Supnik shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Robert M Supnik.
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28-Apr-07 RMS Added sim_rtc_init_all
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17-Oct-06 RMS Added idle support
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02-Jan-04 RMS Split out from SCP
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*/
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#ifndef _SIM_TIMER_H_
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#define _SIM_TIMER_H_ 0
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#include <time.h>
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#ifndef CLOCK_REALTIME
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#define CLOCK_REALTIME 1
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#define NEED_CLOCK_REALTIME 1
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int clock_gettime(int clock_id, struct timespec *tp);
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#endif
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#define SIM_NTIMERS 8 /* # timers */
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#define SIM_TMAX 500 /* max timer makeup */
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#define SIM_IDLE_CAL 10 /* ms to calibrate */
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#define SIM_IDLE_MAX 10 /* max granularity idle */
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#define SIM_IDLE_STMIN 10 /* min sec for stability */
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#define SIM_IDLE_STDFLT 20 /* dft sec for stability */
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#define SIM_IDLE_STMAX 600 /* max sec for stability */
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#define SIM_THROT_WINIT 1000 /* cycles to skip */
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#define SIM_THROT_WST 10000 /* initial wait */
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#define SIM_THROT_WMUL 4 /* multiplier */
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#define SIM_THROT_WMIN 100 /* min wait */
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#define SIM_THROT_MSMIN 10 /* min for measurement */
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#define SIM_THROT_NONE 0 /* throttle parameters */
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#define SIM_THROT_MCYC 1
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#define SIM_THROT_KCYC 2
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#define SIM_THROT_PCT 3
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t_bool sim_timer_init (void);
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void sim_timespec_diff (struct timespec *diff, struct timespec *min, struct timespec *sub);
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int32 sim_rtcn_init (int32 time, int32 tmr);
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void sim_rtcn_init_all (void);
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int32 sim_rtcn_calb (int32 ticksper, int32 tmr);
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int32 sim_rtc_init (int32 time);
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int32 sim_rtc_calb (int32 ticksper);
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t_bool sim_idle (uint32 tmr, t_bool sin_cyc);
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t_stat sim_set_throt (int32 arg, char *cptr);
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t_stat sim_show_throt (FILE *st, DEVICE *dnotused, UNIT *unotused, int32 flag, char *cptr);
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t_stat sim_set_idle (UNIT *uptr, int32 val, char *cptr, void *desc);
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t_stat sim_clr_idle (UNIT *uptr, int32 val, char *cptr, void *desc);
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t_stat sim_show_idle (FILE *st, UNIT *uptr, int32 val, void *desc);
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void sim_throt_sched (void);
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void sim_throt_cancel (void);
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uint32 sim_os_msec (void);
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void sim_os_sleep (unsigned int sec);
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uint32 sim_os_ms_sleep (unsigned int msec);
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uint32 sim_os_ms_sleep_init (void);
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#endif
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