I assume that the 74LS181 (not 74181) didn't became common....

[Dwight Elvey]

Intel also made a ttl based bit slice, it was the 3000 series. The sequencer could be useul in creating really compact firmware. The only problem was you had to be a master level chess player to get it to do anything.
Bit slice were also really good a controller application. Often they'd control an I/O device with another ROM that would do the fight thing based on the processor address. It needed no special handling for the I/O. The ROM did the work. It usually saved several instructions for an I/o operation. It only needed the raw data from the data bus. No processing involved.
Dwight

 

[jplr]

Hi if someone is interested in making a CPU with 8 am2901 and 2 am2910, I have that in my garage.
=> I do not know if they are still in a working state <=

Please note 6 of them are am2901cpc so they are one of the fastest in the family.
And two are am2901bdc.

https://www.cpu-world.com/CPUs/2901/AMD-AM2901CPC.html

Inside the Am2901: AMD's 1970s bit-slice processor

You're probably familiar with modern processors made by Advanced Micro Devices. But AMD's processors go back to 1975, when AMD introduced t...

www.righto.com

They were collected by myself from Alcatel's Mitra gamme S computers.

CII SEMS

(English on right side of page)

If I am not wrong these computers were similar to PDP-11/ 70 (but 10 years late). They were in the garbage bin when the French Yellow Pages decided to dump their old stuff in Rennes ~1999. It was horrible to see, workers throwing cards by the windows. This had happened many times in those years, I dreamt for a long time of the garbage bin at Issy les Moulineaux CNET.
I don't want to sell them, but if someone offers me a PDP-11 PSU for QBUS in exchange, I would be happy. It doesn't matter if the PSU is genuine, new design, or old stuff as long as it works...