On 1/14/22 7:27 AM, Angelo Papenhoff wrote:
On 14/01/22, Noel Chiappa wrote:

    > From: Angelo Papenhoff

    > to my knowledge no troff version before the C rewrite in v7

Apologies if I missed something, but between this list and COFF there's so
much low S/N traffic I skip a lot of it. Having said that, was there ever a
troff in assembler? I'd always had the impression that the first one was in C.

Yes, they were both originally written in assembler. v6 has assembler
sources for nroff and deleted directory entries of troff (and others):

00064e00: 6d01 726f 6666 332e 7300 0000 0000 0000  m.roff3.s.......
00064e10: 6c01 726f 6666 342e 7300 0000 0000 0000  l.roff4.s.......
00064e20: 6b01 726f 6666 352e 7300 0000 0000 0000  k.roff5.s.......
00064e30: 6a01 726f 6666 372e 7300 0000 0000 0000  j.roff7.s.......
00064e40: 6901 726f 6666 382e 7300 0000 0000 0000  i.roff8.s.......
00064e50: 0000 7375 6672 6300 0000 0000 0000 0000  ..sufrc.........
00064e60: 6701 7375 6674 6162 2e73 0000 0000 0000  g.suftab.s......
00064e70: 0000 7463 6174 7369 6d2e 7300 0000 0000  ..tcatsim.s.....
00064e80: 0000 7472 6300 0000 0000 0000 0000 0000  ..trc...........
00064e90: 0000 7472 6f66 6631 2e73 0000 0000 0000  ..troff1.s......
00064ea0: 0000 7472 6f66 6632 2e73 0000 0000 0000  ..troff2.s......
00064eb0: 0000 7472 6f66 6633 2e73 0000 0000 0000  ..troff3.s......
00064ec0: 0000 7472 6f66 6634 2e73 0000 0000 0000  ..troff4.s......
00064ed0: 0000 7472 6f66 6635 2e73 0000 0000 0000  ..troff5.s......
00064ee0: 0000 7472 6f66 6636 2e73 0000 0000 0000  ..troff6.s......
00064ef0: 0000 7472 6f66 6636 6100 0000 0000 0000  ..troff6a.......
00064f00: 0000 7472 6f66 6638 2e73 0000 0000 0000  ..troff8.s......
00064f10: 0000 7878 7878 7800 0000 0000 0000 0000  ..xxxxx.........


So that one is a "troff version before the C rewrite in .. v7", but it is in
C. Is that of any interest?

Without having looked into it more than you have it looks like it is
just an earlier version of the C code, but what I'm after is the
original assembly.

aap
I don't really know how deeply you've looked into this, but it may be of interest to you that Wollongong v6 on Interdata 32 has C sources for troff in /usr/source/troff:
http://www.bitsavers.org/bits/Interdata/32bit/unix/univWollongong_v6/interdata_v6.tar.gz

I know you're looking for assembler, but I also saw the comment "C rewrite in .. v7" in the message. It looks like a C version was available for v6. According to Miller's note:
interdata_v6.tar.gz
  a 'tar' format archive (with dates preserved) of all files as
  they would appear after installing the distribution, with source
  and documentation in /usr/source and /usr/doc respectively; note
  however that special files in /dev appear as ordinary files
The troff dir has date Jun 6, 1978. According to the readme, it was untested (maybe even unported?).

Will