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62 lines
1.4 KiB
62 lines
1.4 KiB
//----------------------------------------------------------------------
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// File: PORT.C
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//
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// Contains generic port access routines.
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//
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// Revisions:
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// 01-08-93 KJB First.
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// 03-25-93 JAP Fixed up typedef and prototype inconsistencies
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//
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//----------------------------------------------------------------------
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#include CARDTXXX_H
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//
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// CardPortSet
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//
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// This routine sets a mask on a certain port. It or's the mask with
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// the value currently at the port. Works only for ports where all bits
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// are readable and writable.
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//
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VOID CardPortSet (PUCHAR baseIoAddress, UCHAR mask)
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{
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UCHAR tmp;
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CardPortGet (baseIoAddress,&tmp);
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tmp = tmp | mask;
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CardPortPut (baseIoAddress,tmp);
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}
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//
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// CardPortClear
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//
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// This routine clears a mask on a certain port. It and's the inverse with
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// the value currently at the port. Works only for ports where all bits
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// are readable and writable.
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//
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VOID CardPortClear (PUCHAR baseIoAddress, UCHAR mask)
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{
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UCHAR tmp;
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CardPortGet(baseIoAddress,&tmp);
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tmp = tmp & (0xff ^ mask);
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CardPortPut(baseIoAddress,tmp);
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}
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//
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// CardPortTest
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//
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// This routine clears a mask on a certain port. It and's the mask with
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// the value currently at the port. This result is returned.
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//
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BOOLEAN CardPortTest(PUCHAR baseIoAddress, UCHAR mask)
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{
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UCHAR tmp;
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CardPortGet(baseIoAddress,&tmp);
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return (tmp & mask);
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}
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