Following a discussion about a hypothetical DM42L, I came across an old post again: viewtopic.php?f=2&t=415&start=10#p4981. Now looking at its last sentence:
Nowadays, however, a DM41P featuring I/O like DM42 plus benefitting from the big display plus some way of loading ROM images would make more sense than a crippled DM42L.
, the time stamp, and the actual appearance of the DM41X, I can't deny some paternal feelings rising.
Before I'll sleep worse - for sure you know: Where are any earlier sketches of the DM41X specs? Were you contacted by SM offering you some inventor royalties? Just asking ...
WP43 SN00000, 34S, and 31S for obvious reasons; HP-35, 45, ..., 35S, 15CE, DM16L S/N# 00093, DM42β SN:00041