Qblox leftover

[alecandido]

An accumulator for some items which will exceed #868 and #1088

• expose mixer calibration
  • i.e. consume user-configured mixer parameters
• support .DEF directives
  • not essential, since it is a feature present mostly for user's simplicity (instead, while generating the assembly, we can also use Python variables, which will be simpler for us)
  • it may be useful to validate further scripts, or to accept users' provided snippets
• impose field separation by whitespaces
  • currently, inline whitespaces are just ignored
• simplify shots bin counter reset
  • the algorithm described in Qblox bin counter algorithm #1119 and implemented in Qblox #1088 requires an extra "bin reset" register and a conditional instruction
  • however, the stride required to reset the bin counter can be computed ahead of time, and it should be possible to add the reset inside and outside the shots loop without any conditional (or, at least, without any extra register - since the stride is fixed)
• probe and acquisition may use a single sequencer, in io mode
  • especially for the QRM-RF (the only one we use for acquisition), there is a single input and a single output, so we can just connect any sequencer to both, instead of using one for each of them (and multiplexed channel)
  • also, cf. Qblox #1088 (comment)