mirror of
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340 lines
15 KiB
C#
340 lines
15 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : 05.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Device structures decoders.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Decodes SCSI MODE PAGE 05h: Flexible disk page.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2023 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.Text;
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namespace Aaru.Decoders.SCSI;
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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[SuppressMessage("ReSharper", "MemberCanBeInternal")]
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[SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
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public static partial class Modes
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{
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#region Mode Page 0x05: Flexible disk page
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/// <summary>Disconnect-reconnect page Page code 0x05 32 bytes in SCSI-2, SBC-1</summary>
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public struct ModePage_05
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{
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/// <summary>Parameters can be saved</summary>
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public bool PS;
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/// <summary>Data rate of peripheral device on kbit/s</summary>
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public ushort TransferRate;
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/// <summary>Heads for reading and/or writing</summary>
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public byte Heads;
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/// <summary>Sectors per revolution per head</summary>
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public byte SectorsPerTrack;
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/// <summary>Bytes of data per sector</summary>
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public ushort BytesPerSector;
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/// <summary>Cylinders used for data storage</summary>
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public ushort Cylinders;
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/// <summary>Cylinder where write precompensation starts</summary>
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public ushort WritePrecompCylinder;
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/// <summary>Cylinder where write current reduction starts</summary>
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public ushort WriteReduceCylinder;
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/// <summary>Step rate in 100 μs units</summary>
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public ushort DriveStepRate;
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/// <summary>Width of step pulse in μs</summary>
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public byte DriveStepPulse;
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/// <summary>Head settle time in 100 μs units</summary>
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public ushort HeadSettleDelay;
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/// <summary>
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/// If <see cref="TRDY" /> is <c>true</c>, specified in 1/10s of a second the time waiting for read status before
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/// aborting medium access. Otherwise, indicates time to way before medimum access after motor on signal is asserted.
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/// </summary>
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public byte MotorOnDelay;
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/// <summary>
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/// Time in 1/10s of a second to wait before releasing the motor on signal after an idle condition. 0xFF means to
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/// never release the signal
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/// </summary>
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public byte MotorOffDelay;
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/// <summary>Specifies if a signal indicates that the medium is ready to be accessed</summary>
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public bool TRDY;
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/// <summary>If <c>true</c> sectors start with one. Otherwise, they start with zero.</summary>
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public bool SSN;
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/// <summary>If <c>true</c> specifies that motor on shall remain released.</summary>
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public bool MO;
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/// <summary>Number of additional step pulses per cylinder.</summary>
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public byte SPC;
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/// <summary>Write compensation value</summary>
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public byte WriteCompensation;
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/// <summary>Head loading time in ms.</summary>
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public byte HeadLoadDelay;
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/// <summary>Head unloading time in ms.</summary>
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public byte HeadUnloadDelay;
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/// <summary>Description of shugart's bus pin 34 usage</summary>
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public byte Pin34;
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/// <summary>Description of shugart's bus pin 2 usage</summary>
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public byte Pin2;
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/// <summary>Description of shugart's bus pin 4 usage</summary>
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public byte Pin4;
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/// <summary>Description of shugart's bus pin 1 usage</summary>
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public byte Pin1;
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/// <summary>Medium speed in rpm</summary>
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public ushort MediumRotationRate;
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}
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public static ModePage_05? DecodeModePage_05(byte[] pageResponse)
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{
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if((pageResponse?[0] & 0x40) == 0x40)
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return null;
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if((pageResponse?[0] & 0x3F) != 0x05)
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return null;
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if(pageResponse[1] + 2 != pageResponse.Length)
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return null;
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if(pageResponse.Length < 32)
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return null;
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var decoded = new ModePage_05();
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decoded.PS |= (pageResponse[0] & 0x80) == 0x80;
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decoded.TransferRate = (ushort)((pageResponse[2] << 8) + pageResponse[3]);
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decoded.Heads = pageResponse[4];
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decoded.SectorsPerTrack = pageResponse[5];
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decoded.BytesPerSector = (ushort)((pageResponse[6] << 8) + pageResponse[7]);
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decoded.Cylinders = (ushort)((pageResponse[8] << 8) + pageResponse[9]);
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decoded.WritePrecompCylinder = (ushort)((pageResponse[10] << 8) + pageResponse[11]);
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decoded.WriteReduceCylinder = (ushort)((pageResponse[12] << 8) + pageResponse[13]);
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decoded.DriveStepRate = (ushort)((pageResponse[14] << 8) + pageResponse[15]);
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decoded.DriveStepPulse = pageResponse[16];
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decoded.HeadSettleDelay = (ushort)((pageResponse[17] << 8) + pageResponse[18]);
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decoded.MotorOnDelay = pageResponse[19];
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decoded.MotorOffDelay = pageResponse[20];
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decoded.TRDY |= (pageResponse[21] & 0x80) == 0x80;
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decoded.SSN |= (pageResponse[21] & 0x40) == 0x40;
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decoded.MO |= (pageResponse[21] & 0x20) == 0x20;
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decoded.SPC = (byte)(pageResponse[22] & 0x0F);
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decoded.WriteCompensation = pageResponse[23];
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decoded.HeadLoadDelay = pageResponse[24];
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decoded.HeadUnloadDelay = pageResponse[25];
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decoded.Pin34 = (byte)((pageResponse[26] & 0xF0) >> 4);
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decoded.Pin2 = (byte)(pageResponse[26] & 0x0F);
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decoded.Pin4 = (byte)((pageResponse[27] & 0xF0) >> 4);
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decoded.Pin1 = (byte)(pageResponse[27] & 0x0F);
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decoded.MediumRotationRate = (ushort)((pageResponse[28] << 8) + pageResponse[29]);
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return decoded;
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}
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public static string PrettifyModePage_05(byte[] pageResponse) =>
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PrettifyModePage_05(DecodeModePage_05(pageResponse));
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public static string PrettifyModePage_05(ModePage_05? modePage)
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{
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if(!modePage.HasValue)
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return null;
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ModePage_05 page = modePage.Value;
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var sb = new StringBuilder();
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sb.AppendLine(Localization.SCSI_Flexible_disk_page);
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if(page.PS)
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sb.AppendLine("\t" + Localization.Parameters_can_be_saved);
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sb.AppendFormat("\t" + Localization.Transfer_rate_0_kbits, page.TransferRate).AppendLine();
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sb.AppendFormat("\t" + Localization._0_heads, page.Heads).AppendLine();
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sb.AppendFormat("\t" + Localization._0_cylinders, page.Cylinders).AppendLine();
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sb.AppendFormat("\t" + Localization._0_sectors_per_track, page.SectorsPerTrack).AppendLine();
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sb.AppendFormat("\t" + Localization._0_bytes_per_sector, page.BytesPerSector).AppendLine();
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if(page.WritePrecompCylinder < page.Cylinders)
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{
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sb.AppendFormat("\t" + Localization.Write_pre_compensation_starts_at_cylinder_0, page.WritePrecompCylinder).
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AppendLine();
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}
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if(page.WriteReduceCylinder < page.Cylinders)
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{
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sb.AppendFormat("\t" + Localization.Write_current_reduction_starts_at_cylinder_0, page.WriteReduceCylinder).
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AppendLine();
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}
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if(page.DriveStepRate > 0)
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sb.AppendFormat("\t" + Localization.Drive_steps_in_0_μs, (uint)page.DriveStepRate * 100).AppendLine();
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if(page.DriveStepPulse > 0)
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sb.AppendFormat("\t" + Localization.Each_step_pulse_is_0_ms, page.DriveStepPulse).AppendLine();
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if(page.HeadSettleDelay > 0)
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sb.AppendFormat("\t" + Localization.Heads_settles_in_0_μs, (uint)page.HeadSettleDelay * 100).AppendLine();
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if(!page.TRDY)
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{
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sb.
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AppendFormat("\t" + Localization.Target_shall_wait_0_seconds_before_attempting_to_access_the_medium_after_motor_on_is_asserted,
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(double)page.MotorOnDelay * 10).
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AppendLine();
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}
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else
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{
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sb.
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AppendFormat("\t" + Localization.Target_shall_wait_0_seconds_after_drive_is_ready_before_aborting_medium_access_attempts,
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(double)page.MotorOnDelay * 10).
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AppendLine();
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}
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if(page.MotorOffDelay != 0xFF)
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{
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sb.
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AppendFormat("\t" + Localization.Target_shall_wait_0_seconds_before_releasing_the_motor_on_signal_after_becoming_idle,
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(double)page.MotorOffDelay * 10).
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AppendLine();
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}
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else
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sb.AppendLine("\t" + Localization.Target_shall_never_release_the_motor_on_signal);
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if(page.TRDY)
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sb.AppendLine("\t" + Localization.There_is_a_drive_ready_signal);
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if(page.SSN)
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sb.AppendLine("\t" + Localization.Sectors_start_at_1);
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if(page.MO)
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sb.AppendLine("\t" + Localization.The_motor_on_signal_shall_remain_released);
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sb.AppendFormat("\t" + Localization.Drive_needs_to_do_0_step_pulses_per_cylinder, page.SPC + 1).AppendLine();
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if(page.WriteCompensation > 0)
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sb.AppendFormat("\t" + Localization.Write_pre_compensation_is_0, page.WriteCompensation).AppendLine();
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if(page.HeadLoadDelay > 0)
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sb.AppendFormat("\t" + Localization.Head_takes_0_ms_to_load, page.HeadLoadDelay).AppendLine();
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if(page.HeadUnloadDelay > 0)
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sb.AppendFormat("\t" + Localization.Head_takes_0_ms_to_unload, page.HeadUnloadDelay).AppendLine();
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if(page.MediumRotationRate > 0)
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sb.AppendFormat("\t" + Localization.Medium_rotates_at_0_rpm, page.MediumRotationRate).AppendLine();
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switch(page.Pin34 & 0x07)
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{
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case 0:
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sb.AppendLine("\t" + Localization.Pin_34_is_unconnected);
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break;
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case 1:
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sb.Append("\t" +
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((page.Pin34 & 0x08) == 0x08
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? Localization.Pin_34_indicates_drive_is_ready_when_active_high
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: Localization.Pin_34_indicates_drive_is_ready_when_active_low));
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break;
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case 2:
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sb.Append("\t" +
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((page.Pin34 & 0x08) == 0x08
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? Localization.Pin_34_indicates_disk_has_changed_when_active_high
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: Localization.Pin_34_indicates_disk_has_changed_when_active_low));
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break;
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default:
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sb.AppendFormat("\t" + ((page.Pin34 & 0x08) == 0x08 ? Localization.Pin_34_indicates_unknown_function_0_when_active_high : Localization.Pin_34_indicates_unknown_function_0_when_active_low),
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page.Pin34 & 0x07);
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break;
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}
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switch(page.Pin4 & 0x07)
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{
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case 0:
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sb.AppendLine("\t" + Localization.Pin_4_is_unconnected);
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break;
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case 1:
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sb.Append("\t" +
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((page.Pin4 & 0x08) == 0x08
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? Localization.Pin_4_indicates_drive_is_in_use_when_active_high
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: Localization.Pin_4_indicates_drive_is_in_use_when_active_low));
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break;
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case 2:
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sb.Append("\t" +
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((page.Pin4 & 0x08) == 0x08
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? Localization.Pin_4_indicates_eject_when_active_high
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: Localization.Pin_4_indicates_eject_when_active_low));
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break;
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case 3:
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sb.Append("\t" +
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((page.Pin4 & 0x08) == 0x08
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? Localization.Pin_4_indicates_head_load_when_active_high
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: Localization.Pin_4_indicates_head_load_when_active_low));
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break;
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default:
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sb.AppendFormat("\t" + ((page.Pin4 & 0x08) == 0x08 ? Localization.Pin_4_indicates_unknown_function_0_when_active_high : Localization.Pin_4_indicates_unknown_function_0_when_active_low),
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page.Pin4 & 0x07);
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break;
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}
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switch(page.Pin2 & 0x07)
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{
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case 0:
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sb.AppendLine("\t" + Localization.Pin_2_is_unconnected);
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break;
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default:
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sb.AppendFormat("\t" + ((page.Pin2 & 0x08) == 0x08 ? Localization.Pin_2_indicates_unknown_function_0_when_active_high : Localization.Pin_2_indicates_unknown_function_0_when_active_low),
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page.Pin2 & 0x07);
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break;
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}
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switch(page.Pin1 & 0x07)
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{
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case 0:
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sb.AppendLine("\t" + Localization.Pin_1_is_unconnected);
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break;
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case 1:
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sb.Append("\t" +
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((page.Pin1 & 0x08) == 0x08
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? Localization.Pin_1_indicates_disk_change_reset_when_active_high
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: Localization.Pin_1_indicates_disk_change_reset_when_active_low));
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break;
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default:
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sb.AppendFormat("\t" + ((page.Pin1 & 0x08) == 0x08 ? Localization.Pin_1_indicates_unknown_function_0_when_active_high : Localization.Pin_1_indicates_unknown_function_0_when_active_low),
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page.Pin1 & 0x07);
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break;
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}
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return sb.ToString();
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}
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#endregion Mode Page 0x05: Flexible disk page
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} |