52 lines
913 B
Go
52 lines
913 B
Go
package izapple2
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import (
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"errors"
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)
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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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func isDiskette(filename string) bool {
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data, err := loadResource(filename)
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if err != nil {
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return false
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}
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return isFileNib(data) || isFileDsk(data) || isFileWoz(data)
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}
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func loadDiskette(filename string) (diskette, error) {
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data, err := loadResource(filename)
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if err != nil {
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return nil, err
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}
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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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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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