diff --git a/src/satman/main.rs b/src/satman/main.rs
index 43a6d586..8058ebea 100644
--- a/src/satman/main.rs
+++ b/src/satman/main.rs
@@ -5,11 +5,11 @@
 extern crate log;
 
 use core::convert::TryFrom;
-use libboard_zynq::i2c::I2c; // not using a wrapper like runtime
+use libboard_zynq::i2c::I2c;
 use libboard_zynq::timer::GlobalTimer;
 #[cfg(has_si5324)]
 use libboard_artiq::si5324;
-use board_artiq::spi; // <- port?, use libboard_zynq (if spi available/necessary)
+// use libboard_zynq::spi; // not yet supported in board/csr
 use libboard_artiq::{pl::csr, drtio_routing, drtioaux, logger, identifier_read};
 
 mod repeater;
@@ -266,24 +266,29 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
 
         drtioaux::Packet::SpiSetConfigRequest { destination: _destination, busno, flags, length, div, cs } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = spi::set_config(busno, flags, length, div, cs).is_ok();
+            // todo: reimplement when SPI is available
+            //let succeeded = spi::set_config(busno, flags, length, div, cs).is_ok();
             drtioaux::send(0,
-                &drtioaux::Packet::SpiBasicReply { succeeded: succeeded })
+                &drtioaux::Packet::SpiBasicReply { succeeded: false})
         },
         drtioaux::Packet::SpiWriteRequest { destination: _destination, busno, data } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = spi::write(busno, data).is_ok();
+            // todo: reimplement when SPI is available
+            //let succeeded = spi::write(busno, data).is_ok();
             drtioaux::send(0,
-                &drtioaux::Packet::SpiBasicReply { succeeded: succeeded })
+                &drtioaux::Packet::SpiBasicReply { succeeded: false })
         }
         drtioaux::Packet::SpiReadRequest { destination: _destination, busno } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            match spi::read(busno) {
-                Ok(data) => drtioaux::send(0,
-                    &drtioaux::Packet::SpiReadReply { succeeded: true, data: data }),
-                Err(_) => drtioaux::send(0,
-                    &drtioaux::Packet::SpiReadReply { succeeded: false, data: 0 })
-            }
+            // todo: reimplement when SPI is available
+            // match spi::read(busno) {
+            //     Ok(data) => drtioaux::send(0,
+            //         &drtioaux::Packet::SpiReadReply { succeeded: true, data: data }),
+            //     Err(_) => drtioaux::send(0,
+            //         &drtioaux::Packet::SpiReadReply { succeeded: false, data: 0 })
+            // }
+            drtioaux::send(0,
+                &drtioaux::Packet::SpiReadReply { succeeded: false, data: 0 })
         }
 
         drtioaux::Packet::JdacBasicRequest { destination: _destination, dacno: _dacno,