mirror of
https://github.com/livingcomputermuseum/UniBone.git
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828e4f5371
Cleaned up bizarre formatting screwups in rk11/rk05 and mscp code, along with other general cleanups.
116 lines
4.3 KiB
C++
116 lines
4.3 KiB
C++
/*
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mscp_drive.hpp: Implementation of MSCP drive, used with MSCP controller.
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Copyright Vulcan Inc. 2019 via Living Computers: Museum + Labs, Seattle, WA.
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Contributed under the BSD 2-clause license.
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*/
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#pragma once
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#include <stdint.h>
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#include <string.h>
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#include <memory>
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#include "parameter.hpp"
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#include "storagedrive.hpp"
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//
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// Implements the backing store for MSCP disk images
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//
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class mscp_drive_c: public storagedrive_c
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{
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public:
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mscp_drive_c(storagecontroller_c *controller, uint32_t driveNumber);
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~mscp_drive_c(void);
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bool on_param_changed(parameter_c *param) override;
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uint32_t GetBlockSize(void);
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uint32_t GetBlockCount(void);
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uint32_t GetRCTBlockCount(void);
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uint32_t GetMediaID(void);
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uint32_t GetDeviceNumber(void);
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uint16_t GetClassModel(void);
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uint16_t GetRCTSize(void);
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uint8_t GetRBNs(void);
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uint8_t GetRCTCopies(void);
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void SetOnline(void);
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void SetOffline(void);bool IsOnline(void);bool IsAvailable(void);
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void Write(uint32_t blockNumber, size_t lengthInBytes, uint8_t* buffer);
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uint8_t* Read(uint32_t blockNumber, size_t lengthInBytes);
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void WriteRCTBlock(uint32_t rctBlockNumber, uint8_t* buffer);
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uint8_t* ReadRCTBlock(uint32_t rctBlockNumber);
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public:
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void on_power_changed(void) override;
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void on_init_changed(void) override;
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public:
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parameter_bool_c use_image_size = parameter_bool_c(this, "useimagesize", "uis", false,
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"Determine unit size from image file instead of drive type");
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private:
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struct DriveInfo
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{
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char TypeName[16];
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size_t BlockCount;
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uint32_t MediaID;
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uint8_t Model;
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uint16_t RCTSize;bool Removable;bool ReadOnly;
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};
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//
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// TODO: add a lot more drive types.
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// Does it make sense to support drive types not native to Unibus machines (SCSI types, for example?)
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// Need to add a ClassID table entry in that eventuality...
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// Also TODO: RCTSize parameters taken from SIMH rq source; how valid are these?
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DriveInfo g_driveTable[21] {
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// Name Blocks MediaID Model RCTSize Removable ReadOnly
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{ "RX50", 800, 0x25658032, 7, 0, true, false },
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{ "RX33", 2400, 0x25658021, 10, 0, true, false },
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{ "RD51", 21600, 0x25644033, 6, 36, false, false },
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{ "RD31", 41560, 0x2564401f, 12, 3, false, false },
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{ "RC25", 50902, 0x20643019, 2, 0, true, false },
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{ "RC25F", 50902, 0x20643319, 3, 0, true, false },
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{ "RD52", 60480, 0x25644034, 8, 4, false, false },
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{ "RD32", 83236, 0x25641047, 15, 4, false, false },
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{ "RD53", 138672, 0x25644035, 9, 5, false, false },
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{ "RA80", 237212, 0x20643019, 1, 0, false, false },
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{ "RD54", 311200, 0x25644036, 13, 7, false, false },
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{ "RA60", 400176, 0x22a4103c, 4, 1008, true, false },
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{ "RA70", 547041, 0x20643019, 18, 198, false, false },
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{ "RA81", 891072, 0x25641051, 5, 2856, false, false },
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{ "RA82", 1216665, 0x25641052, 11, 3420, false, false },
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{ "RA71", 1367310, 0x25641047, 40, 1428, false, false },
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{ "RA72", 1953300, 0x25641048, 37, 2040, false, false },
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{ "RA90", 2376153, 0x2564105a, 19, 1794, false, false },
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{ "RA92", 2940951, 0x2564105c, 29, 949, false, false },
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{ "RA73", 3920490, 0x25641049, 47, 198, false, false },
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{ "", 0, 0, 0, 0, false, false }
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};
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bool SetDriveType(const char* typeName);
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void UpdateCapacity(void);
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void UpdateMetadata(void);
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DriveInfo _driveInfo;bool _online;
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uint32_t _unitDeviceNumber;
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uint16_t _unitClassModel;
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bool _useImageSize;
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//
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// RCT ("Replacement and Caching Table") data:
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// The size of this area varies depending on the drive. This is
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// provided only to appease software that expects the RCT to exist --
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// since there will never be any bad sectors in our disk images
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// there is no other purpose.
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// This data is not persisted to disk as it is unnecessary.
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//
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unique_ptr<uint8_t> _rctData;
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};
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