8-bit acorn emulators • Re: B-Em

I was looking through the source code of b-em to try and find how the floppy disk tracks are stored in memory
I'm hoping they are stored as a long string of bits an like an original disk and not just as sector data like a .ssd

In it's floppy emulation, B-Em doesn't have a layer that deals specifically with the bitstream that would be expected to come from, or be written to, the floppy separate from the way the data is stored in an image file.

Whether you can create interesting formats depends on which disc image file type you are using. For the simple sector dump formats like SSD (sdf-acc.c) the whole disc is constrained to be all FM or all MFM, to have the same number of sectors on each track and to have the standard IDs, as these are not stored in the file.

For more flexible image file formats, you can do interesting things. HFE is the most flexible but IMD is also supported.

Statistics: Posted by Coeus — Sat Aug 17, 2024 6:37 pm

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