I've a soft spot for Karens two-chip marvel and an accident-enforced lay up gave me the opportunity to create a smaller, simpler PICL-specific machine-code monitor to complement NIBL. It takes advantage of the NVRAM swap so (barring a catastrophe!) is permanently in memory ready to go.
My thinking was that for a PICL-resident monitor we need something smaller and simpler than PAGE2.SYS, more along the lines of the old NS Kitbug.
One k is enough for quite a capable monitor, and located towards the top of NV memory (at #2C00) it leaves 3k free in page 2 and 4k in page1 – after all, 8k of RAM, 4k ROM BASIC and a resident machine-code monitor is quite a respectable spec for a late 70's computer based on just two chips!
I've done some documentation and a loader, all on
http://philg.uk
and a bit of a demo here:
https://www.youtube.com/watch?v=3DpUGntVPQ8
BTW thanks for the good wishes all, still confined to quarters here
Cheers
Phil