In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote:

SHIFTIN and SHIFTOUT are designed to be used with SPI, so most likely you aren't configuring the commands properly for the slave device and/or you are not handling the \OE or \CS or latch (or whatever) pin on the slave. The C commands from your library probably handle this internally.

Best bet might be to post:

- your SX/B or ASM code that failed
- the data sheet for the slave device

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