46 lines
1.0 KiB
Go
46 lines
1.0 KiB
Go
package storage
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import (
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"errors"
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)
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// Diskette represents a diskette and it's RW mechanism
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type Diskette interface {
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PowerOn(cycle uint64)
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PowerOff(cycle uint64)
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Read(quarterTrack int, cycle uint64) uint8
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Write(quarterTrack int, value uint8, cycle uint64)
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}
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// IsDiskette returns true if the files looks like a 5 1/4 diskette
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func IsDiskette(data []byte) bool {
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return isFileNib(data) || isFileDsk(data) || isFileWoz(data)
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}
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// MakeDiskette returns a Diskette by detecting the format
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func MakeDiskette(data []byte, filename string, writeable bool) (Diskette, error) {
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if isFileNib(data) {
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var d diskette16sector
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d.nib = newFileNib(data)
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return &d, nil
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}
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if isFileDsk(data) {
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var d diskette16sectorWritable
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d.nib = newFileDsk(data, filename)
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d.nib.supportsWrite = d.nib.supportsWrite && writeable
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return &d, nil
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}
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if isFileWoz(data) {
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f, err := NewFileWoz(data)
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if err != nil {
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return nil, err
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}
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return newDisquetteWoz(f)
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}
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return nil, errors.New("Diskette format not supported")
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}
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