You cant just read it in any external reader.
https://en.wikipedia.org/wiki/M-Systems DiskonChip are the real precursor to SSDs. Afaik they run flash translation layer on the main cpu thru bios extension loading trueFFS driver.
>BIOS then loads the TrueFFS software from the flash memory into the host memory, delivering full disk capabilities to the operating system.
most likely you will need to plonk it into a pc motherboard, let it load its driver, and then copy like a normal disk
>I have a sewing machine
model? whats inside? what software is it running? what architecture? can you take a picture of the board module is plugged into?