diff --git a/src/satman/main.rs b/src/satman/main.rs
index a59992ad..e9e738f6 100644
--- a/src/satman/main.rs
+++ b/src/satman/main.rs
@@ -5,7 +5,7 @@
 extern crate log;
 
 use core::convert::TryFrom;
-use board_misoc::{i2c}; // <- port, use libboard_zynq
+use libboard_zynq::i2c::I2c; // not using a wrapper like runtime
 use libboard_zynq::timer::GlobalTimer;
 #[cfg(has_si5324)]
 use libboard_artiq::si5324;
@@ -78,7 +78,7 @@ macro_rules! forward {
 
 fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
         _routing_table: &mut drtio_routing::RoutingTable, _rank: &mut u8,
-        packet: drtioaux::Packet) -> Result<(), drtioaux::Error<!>> {
+        packet: drtioaux::Packet, timer: GlobalTimer, i2c: I2c) -> Result<(), drtioaux::Error<!>> {
     // In the code below, *_chan_sel_write takes an u8 if there are fewer than 256 channels,
     // and u16 otherwise; hence the `as _` conversion.
     match packet {
@@ -87,7 +87,7 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
         drtioaux::Packet::ResetRequest => {
             info!("resetting RTIO");
             drtiosat_reset(true);
-            clock::spin_us(100);
+            timer.delay_us(100);
             drtiosat_reset(false);
             for rep in _repeaters.iter() {
                 if let Err(e) = rep.rtio_reset() {
@@ -245,22 +245,22 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
 
         drtioaux::Packet::I2cStartRequest { destination: _destination, busno } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = i2c::start(busno).is_ok();
+            let succeeded = i2c.start(busno).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::I2cRestartRequest { destination: _destination, busno } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = i2c::restart(busno).is_ok();
+            let succeeded = i2c.restart(busno).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::I2cStopRequest { destination: _destination, busno } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            let succeeded = i2c::stop(busno).is_ok();
+            let succeeded = i2c.stop(busno).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
         drtioaux::Packet::I2cWriteRequest { destination: _destination, busno, data } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            match i2c::write(busno, data) {
+            match i2c.write(busno, data) {
                 Ok(ack) => drtioaux::send(0,
                     &drtioaux::Packet::I2cWriteReply { succeeded: true, ack: ack }),
                 Err(_) => drtioaux::send(0,
@@ -269,7 +269,7 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
         }
         drtioaux::Packet::I2cReadRequest { destination: _destination, busno, ack } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
-            match i2c::read(busno, ack) {
+            match i2c.read(busno, ack) {
                 Ok(data) => drtioaux::send(0,
                     &drtioaux::Packet::I2cReadReply { succeeded: true, data: data }),
                 Err(_) => drtioaux::send(0,
@@ -315,11 +315,12 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
 }
 
 fn process_aux_packets(repeaters: &mut [repeater::Repeater],
-        routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8) {
+        routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8, 
+        timer::GlobalTimer, i2c: I2c) {
     let result =
         drtioaux::recv(0).and_then(|packet| {
             if let Some(packet) = packet {
-                process_aux_packet(repeaters, routing_table, rank, packet)
+                process_aux_packet(repeaters, routing_table, rank, packet, timer, i2c)
             } else {
                 Ok(())
             }
@@ -431,8 +432,9 @@ pub extern fn main() -> i32 {
     info!("software ident {}", csr::CONFIG_IDENTIFIER_STR);
     info!("gateware ident {}", identifier_read(&mut [0; 64]));
 
-    #[cfg(has_i2c)]
-    i2c::init().expect("I2C initialization failed"); // port
+    let mut i2c = I2c::i2c0();
+    i2c.init().expect("I2C initialization failed");
+
     //see if below is applicable (probably not - not kasli)
     #[cfg(all(soc_platform = "kasli", hw_rev = "v2.0"))]
     let (mut io_expander0, mut io_expander1);
@@ -469,7 +471,7 @@ pub extern fn main() -> i32 {
     unsafe {
         csr::drtio_transceiver::txenable_write(0xffffffffu32 as _);
     }
-    init_rtio_crg();
+    init_rtio_crg(timer);
 
     #[cfg(has_drtio_routing)]
     let mut repeaters = [repeater::Repeater::default(); csr::DRTIOREP.len()];
@@ -510,9 +512,9 @@ pub extern fn main() -> i32 {
 
         while drtiosat_link_rx_up() {
             drtiosat_process_errors();
-            process_aux_packets(&mut repeaters, &mut routing_table, &mut rank);
+            process_aux_packets(&mut repeaters, &mut routing_table, &mut rank, timer, i2c);
             for mut rep in repeaters.iter_mut() {
-                rep.service(&routing_table, rank);
+                rep.service(&routing_table, rank, timer);
             }
             #[cfg(all(soc_platform = "kasli", hw_rev = "v2.0"))]
             {