The DS1104Z has a MSO option: if you add the RPL1116 logic probes, you can sample 8 channels at 1GSa/s, or 16 ch at 500MSa/s. That should be easily capable of

The DS1104Z has a MSO option: if you add the RPL1116 logic probes, you can sample 8 channels at 1GSa/s, or 16 ch at 500MSa/s. That should be easily capable of capturing 80MHz SPI. The downside to using a scope is it's much clunkier than using a LA on a PC. The decoder option it will give you the data, but if you're doing more than a handful of bytes, it gets tedious to scroll through hex dumps on screen and manually copying out the parts you want. Saleae's software is delightful for this on their hardware. However, Sigrok is a decent alternative which supports a lot of devices. That includes the DS1000Z series, though I don't know if that includes the logic inputs. The OP might want to check them out. https://sigrok.org/wiki/Supported_hardware https://sigrok.org/wiki/Supported_hardware