/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/NCR.c,v 3.5 1996/12/23 06:31:19 dawes Exp $ */ /* * (c) Copyright 1993,1994 by David Wexelblat * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * DAVID WEXELBLAT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of David Wexelblat shall not be * used in advertising or otherwise to promote the sale, use or other dealings * in this Software without prior written authorization from David Wexelblat. * */ /* $XConsortium: NCR.c /main/6 1996/10/24 07:09:54 kaleb $ */ #include "Probe.h" static Word Ports[] = {SEQ_IDX, SEQ_REG}; #define NUMPORTS (sizeof(Ports)/sizeof(Word)) Chip_Descriptor NCR_Descriptor = { "NCR", Probe_NCR, Ports, NUMPORTS, FALSE, FALSE, TRUE, NULL, }; Bool Probe_NCR(Chipset) int *Chipset; { Bool result = FALSE; Byte old, tmp; EnableIOPorts(NUMPORTS, Ports); if (testinx2(SEQ_IDX, 0x05, 0x05)) { old = rdinx(SEQ_IDX, 0x05); wrinx(SEQ_IDX, 0x05, 0x00); if (!testinx2(SEQ_IDX, 0x10, 0xFF)) { wrinx(SEQ_IDX, 0x05, 0x01); if (testinx2(SEQ_IDX, 0x10, 0xFF)) { result = TRUE; tmp = rdinx(SEQ_IDX, 0x08) >> 4; if (tmp == 0) { *Chipset = CHIP_NCR77C22; } else if (tmp == 1) { *Chipset = CHIP_NCR77C21; } else if (tmp == 2) { if ((rdinx(SEQ_IDX, 0x08) & 0x0F) >= 8) { *Chipset = CHIP_NCR77C22EP; } else { *Chipset = CHIP_NCR77C22E; } } else if (tmp == 3) { *Chipset = CHIP_NCR77C32B; } else { Chip_data = tmp; *Chipset = CHIP_NCR_UNK; } } } wrinx(SEQ_IDX, 0x05, old); } DisableIOPorts(NUMPORTS, Ports); return(result); }