Re: ��c code �л��PNP��ϵ��ڴ��ր

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#2283

From: gege
Date: Thu, 01 Jan 1998 00:00

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 ��� 1. PCI specification
          2.  NTDDK  document
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�� �� jazzman.bbs@bbs.sjtu.edu.cn (��ʿ��) �Ĵ������ᵽ: ��
: �����PCI����һЩԴ����
: ��������PCI���ģ��ҵ�֮�󣬴�
: configuration space �ж���
: base address M/IO
: ��� 1. PCI specification
:          2.  NTDDK  document
: #define       PCI_ADDRESS             0x0cf8
: #define       PCI_DATA                0x0cfc
: int   PCI_BUS_PRESENT(void)
: {
:       static  done=FALSE;
:       ULONG   i;
:       USHORT  j;
:       if (done) return TRUE;
:       // try Mechanism first
:       for (i=0x80000000;i<0x80010000;i+=0x00000800)
:       {
:               outpd(PCI_ADDRESS,i);
:               if (inpw(PCI_DATA)==0xffff)     continue;
:               outpd(PCI_ADDRESS,i+0x08);
:               if (inpw(PCI_DATA+2)!=0x0600)   continue;               // not Host Bridge
:               done=TRUE;
:               return  TRUE;
:       }

v

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From: cxl.bbs@bbs.njtu.edu.cn (gege)
Subject: Re: �����c code �л��PNP���ϵ��ڴ���ր
Date: 1998/01/01
Message-ID: <3MM2FW$tH8@bbs.njtu.edu.cn>
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Re: �����c code �л��PNP���ϵ��ڴ���ր

Re: ��c code �л��PNP��ϵ��ڴ��ր