mirror of
https://github.com/livingcomputermuseum/UniBone.git
synced 2026-05-02 22:24:06 +00:00
974aeed8eb
Interrupt and DMA system now handles multiple levels and multiple devices in parallel Interrupt Register changes synced with INTR transaction DL11 and KW11 clock pass the ZDLDI0 diagnostic. Devices can now be enabled and disabled individually.
108 lines
3.7 KiB
C++
108 lines
3.7 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> // unique_ptr
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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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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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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 }, { "RX33", 2400, 0x25658021, 10, 0,
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true, false }, { "RD51", 21600, 0x25644033, 6, 36, false, false }, { "RD31",
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41560, 0x2564401f, 12, 3, false, false }, { "RC25", 50902, 0x20643019, 2, 0,
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true, false }, { "RC25F", 50902, 0x20643319, 3, 0, true, false }, { "RD52",
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60480, 0x25644034, 8, 4, false, false }, { "RD32", 83236, 0x25641047, 15, 4,
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false, false }, { "RD53", 138672, 0x25644035, 9, 5, false, false }, {
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"RA80", 237212, 0x20643019, 1, 0, false, false }, { "RD54", 311200,
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0x25644036, 13, 7, false, false }, { "RA60", 400176, 0x22a4103c, 4, 1008,
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true, false }, { "RA70", 547041, 0x20643019, 18, 198, false, false }, {
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"RA81", 891072, 0x25641051, 5, 2856, false, false }, { "RA82", 1216665,
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0x25641052, 11, 3420, false, false }, { "RA71", 1367310, 0x25641047, 40,
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1428, false, false },
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{ "RA72", 1953300, 0x25641048, 37, 2040, false, false }, { "RA90", 2376153,
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0x2564105a, 19, 1794, false, false }, { "RA92", 2940951, 0x2564105c, 29,
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949, false, false }, { "RA73", 3920490, 0x25641049, 47, 198, false, false },
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{ "", 0, 0, 0, 0, false, false } };
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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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