[TUHS] Query on PDP-11 assembly

Naoki Hamada nao at tom-yam.or.jp
Thu May 1 00:41:17 AEST 2008


This technique was a very common one in assembler sources for PDP-11
versions of UNIX. For example, m40.s of Version 6 UNIX shows a line
"jsr     r0,call1; _trap" in its trap routine. I feel very funny to
tell this to Warren, the author of apout!

Anyway, it could be a source of the null-terminated expression of
character strings of the C language, I guess.

Naoki Hamada
nao at tom-yam.or.jp

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