I have an ADC and DAC board built for Raspberry Pi which has 2 slaves on the SPI bus, requiring ce0 and ce1. This works fine on the Raspberry pi 3, which installs devices /dev/spidev0.0 and also /dev/spidev/0.1,  to access each slave.   On the OPi PC I can access slave 0, but not slave 1. In /dev on the Opi there is only a single spidev device: /dev/spidev0.0 and no spidev0.1 device. I have modified the script.bin (I am using Armbian legacy OS - Armbian_5.14_Orangepipc_Debian_jessie_3.4.112_desk