Guess we've all been there. Tried to build a current controlled oscillator around a Schmitt inverter in LTSpice and got dinged. "Timestep too small". Again. Fiddled with the usual things like easing off reltol but this time no matter what I do it looks like it won't converge.
Anyway, are the shipped models for digital devices not useful for this 'semi-analog' stuff? If so I'll scoot over to the lab and do it the way I always used to do it, with the solder iron and a pot of coffee.
So I am just looking for a hint at a quick fix or a recommendation along the lines of 'fuggetaboutit'.