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Add a minimum IPS value at compile time.

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This is used for calculating the minimum speed for the realtime PIT and for flagging errors with user IPS values.
This commit is contained in:
Gregory Alexander 2002-10-30 18:30:29 +00:00
parent ac49ea2418
commit 5bc28d6dfa
3 changed files with 13 additions and 4 deletions
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5
bochs/config.h.in
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@ -202,6 +202,11 @@
// gui definition so that they don't waste their time trying.
#define BX_USE_IDLE_HACK 0
// Minimum Emulated IPS.
// This is used in the realtime PIT as well as for checking the
// IPS value set in the config file.
#define BX_MIN_IPS 200000
// Use Static Member Funtions to eliminate 'this' pointer passing
// If you want the efficiency of 'C', you can make all the
// members of the C++ CPU class to be static.

8
bochs/iodev/pit_wrap.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: pit_wrap.cc,v 1.35 2002-10-29 22:26:32 yakovlev Exp $
// $Id: pit_wrap.cc,v 1.36 2002-10-30 18:30:29 yakovlev Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -80,10 +80,15 @@ bx_pit_c bx_pit;
#define DEBUG_GETTIMEOFDAY_WITH_PRINTF 0
#define USEC_PER_SECOND (1000000)
#define TIME_DIVIDER (1)
#define TIME_MULTIPLIER (1)
#define TIME_HEADSTART (1)
#define MIN_USEC_PER_SECOND (((((Bit64u)USEC_PER_SECOND)*((Bit64u)BX_MIN_IPS))/((Bit64u)(bx_options.Oips->get())))+(Bit64u)1)
#if 0
#define MIN_USEC_PER_SECOND (150000)
#endif
//USEC_ALPHA is multiplier for the past.
//USEC_ALPHA_B is 1-USEC_ALPHA, or multiplier for the present.
#define USEC_ALPHA ((double)(.8))
@ -102,7 +107,6 @@ bx_pit_c bx_pit;
//1.193181MHz Clock
//1193/1000 Ticks Per usecond.
#define TICKS_PER_SECOND (1193181)
#define USEC_PER_SECOND (1000000)
#define TIME_MULT 1.193
#define REAL_TICKS_TO_USEC(a) ( ((a)*USEC_PER_SECOND)/TICKS_PER_SECOND )
#define REAL_USEC_TO_TICKS(a) ( ((a)*TICKS_PER_SECOND)/USEC_PER_SECOND )

4
bochs/main.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: main.cc,v 1.170 2002-10-29 22:26:31 yakovlev Exp $
// $Id: main.cc,v 1.171 2002-10-30 18:30:29 yakovlev Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -2741,7 +2741,7 @@ parse_line_formatted(char *context, int num_params, char *params[])
PARSE_ERR(("%s: ips directive: wrong # args.", context));
}
bx_options.Oips->set (atol(params[1]));
if (bx_options.Oips->get () < 200000) {
if (bx_options.Oips->get () < BX_MIN_IPS) {
BX_ERROR(("%s: WARNING: ips is AWFULLY low!", context));
}
}