Thanks. Saved.
Interesting re SBLive stealing an Irq for DOS use - about which Windoze is oblivious!
Also noted my E-machine has modem in 1st PCI slot adjacent to AGP! but - works like charm.
Good reminder too, to make sure I remembered to disable the secondary IDE and second floppy in BIOS in the new boxes.
Now as to edge VS level- triggering (??) - fer us scope types that rings a bell, but also a bit sophisticated for a toy box I'd a thunk: that is, for it to reliably discriminate / flip - for one trigger-level setting VS a slightly different criterion. At a 100 - 200 MHz bus rate, say !
(If you find that ref, be curious how they Do that.)
Thanx,
A.