@bytex64 @nina_kali_nina There are many different TRON...

@bytex64 @nina_kali_nina There are many different TRON implementations that are completely independent of one another, although most of these are ITRON unikernels. AFAICT BTRON has only ever really had one lineage of implementations, specifically the Panasonic/PMC one consisting of BTRON286/1B, 3B/B-right/Chokanji, and T-shell (which is a port of much of Chokanji from a legacy ITRON kernel to T-kernel, intended mostly for embedded use)

Like 9 February at 5:14 | Wall-to-wall | Open on social.restless.systems

3 comments

Andrew Warkentin

@bytex64 @nina_kali_nina There was an effort in the early 2000s to produce a free BTRON implementation independent of Panasonic and PMC, known at various points as B-free, BTRON386, and EOTA, although this only ever produced what amounts to a Unix with an ITRON microkernel and a weird Forth-like shell; they never got around to actually implementing the BTRON subsystem for it (this will of course be in my OS museum VM as well)

9 February at 5:25 | Open on social.restless.systems

Andrew Warkentin

@bytex64 @nina_kali_nina
Here's the site for EOTA with source and boot images for the last version: https://www.rbt.his.u-fukui.ac.jp/~naniwa/comp/OS/

As for CTRON, the TRON variant for servers and networking equipment that seems to be even more obscure than BTRON, I'm not sure how many implementations there were. Fujitsu made a fault-tolerant server based on the TRON VLSI CPU, running a CTRON-based OS, but I'm not sure if there were ever any other implementations: http://tronweb.super-nova.co.jp/suresys2000.html

@bytex64 @nina_kali_nina
Here's the site for EOTA with source and boot images for the last version: https://www.rbt.his.u-fukui.ac.jp/~naniwa/comp/OS/

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9 February at 5:31 | Open on social.restless.systems

Chip

@andreww @nina_kali_nina Fascinating. Thanks!

9 February at 5:33 | Open on awesome.garden