doc/rtio: handover vis, tweak other vis's

doc/manual/rtio.rst

@@ -57,9 +57,9 @@ The following diagram shows what is going on at the different levels of the soft
 .. wavedrom::
   {
     signal: [
-      {name: 'kernel', wave: 'x22.2x', data: ['on()', 'delay(2*us)', 'off()'], node: '..A.XB'},
+      {name: 'kernel', wave: 'x32.4x', data: ['on()', 'delay(2*us)', 'off()'], node: '..A.XB'},
       {name: 'now_mu', wave: '2...2.', data: ['7000', '9000'], node: '..P..Q'},
-      {name: 'slack', wave: 'x2x.2x', data: ['4400', '5800']},
+      {name: 'slack', wave: 'x3x.4x', data: ['4400', '5800']},
       {},
       {name: 'rtio_counter', wave: 'x2x|2x|2x2x', data: ['2600', '3200', '7000', '9000'], node: '        V.W'},
       {name: 'ttl', wave: 'x1.0', node: ' R.S', phase: -7.5},
@@ -129,20 +129,36 @@ Seamless handover
 The timeline cursor persists across kernel invocations.
 This is demonstrated in the following example where a pulse is split across two kernels:::
 
+  def run():
+    k1()
+    k2()
+
   @kernel
-  def kernel1():
+  def k1():
     ttl.on()
     delay(1*s)
 
   @kernel
-  def kernel2():
+  def k2():
     ttl.off()
 
-  def run():
+Here, ``run()`` calls ``k1()`` which exits leaving the cursor one second after the rising edge and ``k2()`` then submits a falling edge at that position.
-    kernel1()
+
-    kernel2()
+.. wavedrom::
+  {
+    signal: [
+      {name: 'kernel', wave: '3.3..5..|4.', data: ['k1: on()', 'k1: delay(dt)', 'k1->k2 swap', 'k2: off()'], node: '..A........B'},
+      {name: 'now_mu', wave: '2....2...|.', data: ['t0', 't0+dt'], node: '..P........Q'},
+      {},
+      {},
+      {name: 'rtio_counter', wave: 'x.........|2x|2', data: ['t0', 't0+dt'], node: '...........V..W'},
+      {name: 'ttl', wave: 'x1..0', node: '.R..S', phase: -10.5},
+    ],
+    edge: [
+          'A~>R', 'P~>R', 'V~>R', 'B~>S', 'Q~>S', 'W~>S'
+    ],
+  }
 
-``kernel1()`` exits leaving the cursor one second after the rising edge and ``kernel2()`` then submits a falling edge at that position.
 
 Synchronization
 ---------------
@@ -154,7 +170,7 @@ When a kernel should wait until all the events on a particular channel have been
 .. wavedrom::
   {
     signal: [
-      {name: 'kernel', wave: 'x2x.|2.|x', data: ['on()', 'sync()'], node: '..A.....Y'},
+      {name: 'kernel', wave: 'x3x.|2.|x', data: ['on()', 'sync()'], node: '..A.....Y'},
       {name: 'now_mu', wave: '2..', data: ['7000'], node: '..P'},
       {},
       {},