mixal::IODeviceTape Class Reference

#include <io.h>

Inheritance diagram for mixal::IODeviceTape:

Public Member Functions
	IODeviceTape (int32_t storageSize=4096)
void	control (int32_t operation) final
Public Member Functions inherited from mixal::IODeviceStorage
	IODeviceStorage (int32_t storageSize=4096)
	IODeviceStorage (const IODeviceStorage &)=default
IODeviceStorage &	operator= (const IODeviceStorage &)=default
bool	ready (int32_t elapsed) override
void	read (ComputerWord *memory, int32_t address) override
void	write (const ComputerWord *memory, int32_t address) override
ComputerWord &	wordAt (int32_t index) override
Public Member Functions inherited from mixal::IODevice
	IODevice (int32_t blockSize, bool allowRead, bool allowWrite)
IODeviceType	type () const
int	blockSize () const
bool	allowRead () const
bool	allowWrite () const

Additional Inherited Members
Protected Attributes inherited from mixal::IODeviceStorage
IODeviceStatus	_status
int32_t	_address
int32_t	_locator
ComputerWord *	_memory
std::vector< ComputerWord >	_buffer
std::vector< ComputerWord >	_storage
Protected Attributes inherited from mixal::IODevice
IODeviceType	_type
int32_t	_blockSize
bool	_allowRead
bool	_allowWrite
int32_t	_timestamp
double	_readyRate

Detailed Description

Magnetic tape.

Definition at line 110 of file io.h.

Member Function Documentation

control()

void mixal::IODeviceTape::control ( int32_t  operation )

finalvirtual

If M = 0, the tape is rewound. If M < 0 the tape is skipped backward −M blocks, or to the beginning of the tape. If M > 0, the tape is skipped forward;

Reimplemented from mixal::IODevice.

Definition at line 75 of file io.cpp.

                                            {
    if (operation == 0) {
        _locator = 0;
    } else {
        _locator += operation * _blockSize;
        _locator = std::max(0, _locator);
    }
}

References mixal::IODevice::_blockSize.

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The documentation for this class was generated from the following files:

• include/io.h
• src/io.cpp