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- more accurate emulation of port 0x61 bit #4. This bit toggles with every

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refresh request (15 usec). This fixes SF bug #644042.
This commit is contained in:
Volker Ruppert 2003-01-09 20:43:32 +00:00
parent 8f88ab3b1b
commit 366188e67a
1 changed files with 2 additions and 2 deletions
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4
bochs/iodev/pit_wrap.cc
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@ -1,5 +1,5 @@
////////////////////////////////////////////////////////////////////////
// $Id: pit_wrap.cc,v 1.44 2003-01-05 01:37:21 cbothamy Exp $
// $Id: pit_wrap.cc,v 1.45 2003-01-09 20:43:32 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -339,7 +339,7 @@ bx_pit_c::read( Bit32u address, unsigned int io_len )
case 0x61:
/* AT, port 61h */
BX_PIT_THIS s.refresh_clock_div2 = !BX_PIT_THIS s.refresh_clock_div2;
BX_PIT_THIS s.refresh_clock_div2 = ((bx_pc_system.time_usec() / 15) & 1);
return( (BX_PIT_THIS s.timer.read_OUT(2)<<5) |
(BX_PIT_THIS s.refresh_clock_div2<<4) |
(BX_PIT_THIS s.speaker_data_on<<1) |