DAT

Status

What it is

DAT is tracked as a Barudan embroidery format lead. The .dat extension is very broad outside embroidery, so Satin Studio should not infer embroidery content by extension alone.

Satin Studio behavior

Satin Studio documents this format for identification and inspection. It does not open or export the file.

Versions and variants

Unknown.

File identification notes

Reported structure includes a 256-byte header followed by unsigned x, y, control-style records.

Observed structure notes

• At least two incompatible embroidery DAT dialects are reported: Barudan-style and Sunstar-style. Do not probe DAT by extension alone.
• Barudan-style records are three bytes in control, y, x order. Bit 0x80 is expected; bit 0x20 negates X; bit 0x40 negates Y. Low five command bits match the Barudan U-series family for stitch, jump, speed, trims, stops, needle changes, and end.
• Sunstar-style records are three bytes in x, y, control order. High bits on X/Y encode signs. Observed controls include 0x07 stitch, 0x04 jump, 0x80 trim, 0x87 color change, 0x84 initialization stitch, and 0x00 end.

Structure sketch

DAT needs dialect-specific shapes:

struct BarudanDatCandidate<'a> {
    records: &'a [BarudanDatRecord],
}

struct BarudanDatRecord {
    control: u8,                       // bit 0x80 expected; 0x20 negates x; 0x40 negates y
    y: u8,
    x: u8,
}

struct SunstarDatCandidate<'a> {
    header: [u8; 0x100],
    records: &'a [SunstarDatRecord],
}

struct SunstarDatRecord {
    x_with_sign: u8,                    // high bit negates magnitude
    y_with_sign: u8,                    // high bit negates magnitude
    control: u8,
}

Compatibility evidence

The notes above help identify and inspect the format; they do not imply import or export support. Keep the original file and record the machine and software that produced it.