/************************************************************************* * * * $Id: wd179x.h 1907 2008-05-21 07:04:17Z hharte $ * * * * Copyright (c) 2007-2008 Howard M. Harte. * * http://www.hartetec.com * * * * 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 HOWARD M. HARTE 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 Howard M. Harte shall * * not be used in advertising or otherwise to promote the sale, use or * * other dealings in this Software without prior written authorization * * Howard M. Harte. * * * * SIMH Interface based on altairz80_hdsk.c, by Peter Schorn. * * * * Module Description: * * Generic Intel 8272 Disk Controller module for SIMH. * * * * Environment: * * User mode only * * * *************************************************************************/ extern t_stat wd179x_attach(UNIT *uptr, CONST char *cptr); extern t_stat wd179x_detach(UNIT *uptr); extern uint8 WD179X_Set_DMA(const uint32 dma_addr); extern uint8 WD179X_Read(const uint32 Addr); extern uint8 WD179X_Write(const uint32 Addr, uint8 cData); extern void wd179x_external_restore(void); #define WD179X_FDC_MSR 0 /* R=FDC Main Status Register, W=Drive Select Register */ #define WD179X_FDC_DATA 1 /* R/W FDC Data Register */ #define WD179X_STATUS 0 #define WD179X_TRACK 1 #define WD179X_SECTOR 2 #define WD179X_DATA 3 typedef struct { PNP_INFO pnp; /* Plug-n-Play Information */ uint8 intrq; /* WD179X Interrupt Request Output (EOJ) */ uint8 hld; /* WD179X Head Load Output */ uint8 drq; /* WD179X DMA Request Output */ uint8 ddens; /* WD179X Double-Density Input */ uint8 fdc_head; /* H Head Number */ uint8 sel_drive; /* Currently selected drive */ uint8 drivetype; /* 8 or 5 depending on disk type. */ } WD179X_INFO_PUB;