DST — Tajima

DST is the Tajima industrial format: text header + 3 bytes per stitch + tail. Painless to read and write. Not the most feature-rich format (no extrinsic hoop, no colors), but the most widespread on industrial machines.

Structure

1. 512-byte header: LA:, ST:, CO:, +X, -X, +Y, -Y, AX, AY, MX, MY, PR, ... ASCII text with labels, 0x1a as terminator.
2. Stream of 3-byte records: [b1, b2, ctrl] (note the ctrl at the end), binary encoding with scattered bits for x, y and the Stitch/Jump/Color/End flags.
3. Tail: END record.

What it supports

• Trims: no direct command; the stream uses JUMPs for trim purposes (synthesis algorithm).
• Colors: COLOR_CHANGE in the stream.
• Hoop: not stored.
• Coordinates: deltas in 0.1 mm with scaling.

Limits

DST cannot express the hoop position: you set that on the machine. Verified byte-for-byte against pyembroidery as the golden reference (scripts/gen_format_golden.py).

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