M-Labs
/
artiq
mirror of https://github.com/m-labs/artiq.git
2
0
Fork 2
Code Issues Projects Releases Wiki Activity

doc/rtio: vis RTIOUnderflow

This commit is contained in:
Robert Jördens 2016-08-25 19:06:11 +02:00
parent 446dcf2123
commit 8f952fdb98
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
doc/manual/rtio.rst
View File

@ -93,6 +93,23 @@ The experiment attempts to handle the exception by moving the cursor forward and
delay(16.6667*ms)
ttl.on()
.. wavedrom::
{
signal: [
{name: 'kernel', wave: 'x34..2.3x', data: ['on()', 'RTIOUnderflow', 'delay(dt)', 'on()'], node: '..AB....C', phase: -3},
{name: 'now_mu', wave: '2.....2', data: ['t0', 't0+dt'], node: '.D.....E', phase: -4},
{},
{name: 'slack', wave: '2x....2', data: ['< 0', '> 0'], node: '.T', phase: -4},
{},
{name: 'rtio_counter', wave: 'x2x.........2x', data: ['t0', 't0+dt'], node: '............P'},
{name: 'tll', wave: 'x...........1', node: '.R..........S', phase: -.5}
],
edge: [
'A-~>R forbidden', 'D-~>R', 'T-~B exception',
'C~>S allowed', 'E~>S', 'P~>S'
]
}
To track down ``RTIOUnderflows`` in an experiment there are a few approaches:
* Exception backtraces show where underflow has occurred while executing the