DTs instant Interrupts

[skimask]

I said it this way because there is no way to get a "superfast" interrupt in Basic, unless you exercise great care and knowledge with the code--but certainly not as a plugin.

I don't know about that....those DT's Instant Int's are pretty fast, like Instant, like as in practically zero latency...and the Instant Int's package qualifies as a 'plug-in' in my book, 'cause you just plug in a few lines in the PBP code, and you're set.
But, yes, obviously you're right about what goes inside the interrupt code. Too easy to screw one's self trying to do too much between the INT and the RETFIE...