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9e3d414ef2
This update to the Altair8800 simulator includes: Adds MITS hard disk controller device Adds FarmTek FDC+ disk controller device (1.5MB) Adds iCOM 3712/3812 disk controller device Adds Processor Technology VDM1 video device Fixes boot bug in TARBELL and VFII devices TARBELL returns 0xff for DMA status if 1011 Fixes DAZZLER vertical blank status timing Adds DDT command to control DDT-style output Improves MEMORY dump display
68 lines
3.4 KiB
C
68 lines
3.4 KiB
C
/* farmtek_fdcplus.h
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Copyright (c) 2026 Patrick A. Linstruth
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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PETER SCHORN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Patrick Linstruth shall not
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be used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Patrick Linstruth.
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History:
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03/29/26 Initial version
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*/
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#ifndef _FARMTEK_FDCPLUS_H
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#define _FARMTEK_FDCPLUS_H
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#define UNIT_V_DSK_WLK (UNIT_V_UF + 0) /* write locked */
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#define UNIT_DSK_WLK (1 << UNIT_V_DSK_WLK)
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#define NUM_OF_DSK 4 /* NUM_OF_DSK must be power of two */
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#define NUM_OF_DSK_MASK (NUM_OF_DSK - 1)
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#define DSK_ALTAIR_8IN 1
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#define DSK_ALTAIR_MINIDISK 2
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#define FDCP_TYPE_5 5
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#define DSK_SECTSIZE 137 /* size of sector */
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#define DSK_SECT 32 /* sectors per track */
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#define MAX_TRACKS 2048 /* number of tracks */
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#define MINI_DISK_SECT 16 /* mini disk sectors per track */
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#define MINI_DISK_TRACKS 35 /* number of tracks on mini disk */
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#define MINI_DISK_SIZE (MINI_DISK_TRACKS * MINI_DISK_SECT * DSK_SECTSIZE)
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#define MINI_DISK_DELTA 4096 /* threshold for detecting mini disks */
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#define FDCP15_DISK_SECT 1 /* FDC+ 1.5MB Type 5 sectors per track */
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#define FDCP15_DISK_TRACKS 149 /* number of tracks on 1.5MB disk */
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#define FDCP15_DISK_SECTSIZE 10240 /* 1.5MB disk sector size */
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#define FDCP15_DISK_SIZE (FDCP15_DISK_TRACKS * FDCP15_DISK_SECT * FDCP15_DISK_SECTSIZE)
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#define FDCP15_DISK_DELTA 4096 /* threshold for detecting 1.5MB disks */
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#define ALTAIR_DISK_SIZE 337664 /* size of regular Altair disks */
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#define ALTAIR_DISK_DELTA 256 /* threshold for detecting regular Altair disks */
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#define MAX_SECT_SIZE (FDCP15_DISK_SECTSIZE)
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#define MAX_TRK_SIZE (FDCP15_DISK_SECTSIZE)
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#define MAX_DSK_SIZE (DSK_SECTSIZE * DSK_SECT * MAX_TRACKS)
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#endif
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