31 lines
1.4 KiB
Markdown
31 lines
1.4 KiB
Markdown
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### Floppy Directory
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Put floppy images in this directory. Valid image formats are flat sector images
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of the type created by WinImage, dd or other such utilities, typically with \*.img
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or \*.ima extensions. Compressed \*.imz images are not supported.
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MartyPC will adjust the floppy drive size within the capabilities of the currently
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emulated machine, based on the size of the image loaded. Thus if you load a 720KB
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floppy image, the drive becomes a 720KB floppy drive. There is no need to configure
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this setting.
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However, if emulating a IBM PC or XT, note that certain floppy sizes will not work
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as the machine/BIOS does not know how to handle a disk of that size.
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Floppy images must be one of these exact file sizes:
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|bytes|type| |
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|----|----|-------|
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|163,840 | 160KB floppy, single-sided | Rare, only used by the earliest PCs.|
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|184,320 | 180KB floppy, single-sided | Rare, only used by the earliest PCs.|
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|327,680 | 320KB floppy, double-sided | Somewhat rare. |
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|368,640 | 360KB floppy, double-sided | Extremely common. |
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|737,280 | 720KB floppy, double-sided | Extremely common. |
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|1,228,800 | 1.2MB floppy, double-sided | Extremely common. |
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The exception is anything smaller than 163,840 bytes will be loaded as that size,
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padded with 0s.
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This is a convenience feature for development of boot sector software or loading
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of boot sector demos and games.
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