Leaked source code of windows server 2003
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#if defined(NEC_98)
#define BYTE_PER_SECTOR 1024
#define SECTOR_PER_TRACK 8
#define TOTAL_CYLINDER 77
#define HEADS 2
#define MAX_FLOPPY_LEN (BYTE_PER_SECTOR*SECTOR_PER_TRACK*TOTAL_CYLINDER*HEADS)
// #define SCRATCH_BUFFER_SIZE (BYTE_PER_SECTOR * SECTOR_PER_TRACK)
#endif //NEC_98
//
// Optimize this constant so we are guaranteed to be able to transfer
// a whole track at a time from a 1.44 meg disk (sectors/track = 18 = 9K)
//
#define SCRATCH_BUFFER_SIZE 9216
//
// Buffer for temporary storage of data read from the disk that needs
// to end up in a location above the 1MB boundary.
//
// NOTE: it is very important that this buffer not cross a 64k boundary.
//
extern PUCHAR LocalBuffer;
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