Yup. This is an interesting time for the project. It's after the '88 meeting where they separated features onto blue (easier), pink (harder) and red (hardest) cards and before '91 when they were actively talking to IBM about what would eventually become Talingent in '92.

They've had enough time to think about things and get some early coding experiments under their collective belts, but not so long that the impact of infighting (and mild panic) is so apparent.

I contributed a small bit to a serial port manager in this time frame. In retrospect, it's clear they wanted something that could work on different hardware (like the 16550 popular in PCs and Z8530s already used by the macs) - but I'm a little sad to see it isn't mentioned here.