Falsies (Burroughs large systems)
Paul Campbell
pc at unisoft.UUCP
Tue Sep 10 01:54:13 AEST 1985
<oog>
The Burroughs Large Systems Architecture (B5900/6X00/7X00 etc) is
programmed in Algol and its dialects .... no assembler is available from
Burroughs for them (of course we wrote one ....) this is mainly because their
architecture has no true memory protection (ie protecting one process from
another), they depend on the compilers only making 'safe' code. Of course if
you want to do system work you write an 'unsafe' compiler and protect it.
The architecture supports 3 branch instructions
BRANCH unconditionally
BRANCHTRUE remove the word on the top of stack and
branch if the lower bit is set
BRANCHFALSE remove the word on the top of stack and
branch if the lower bit is clear
Paul Campbell
..!ucbvax!unisoft!paul
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