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From: lindsay@k.gp.cs.cmu.edu (Donald Lindsay)
Newsgroups: comp.arch
Subject: Re: Self Modifying Code
Keywords: writing return address to routine front
Message-ID: <2317@pt.cs.cmu.edu>
Date: 19 Jul 88 22:56:13 GMT
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The idea of storing a return address into the front word of a subroutine
was widespread. It would be nice to think that this rank stupidity died out
long ago, but in fact the HP 2100 series worked that way. (I believe it
went off the market in the 1980's.)

Issues like ROM and reentrance weren't the only headaches.  How to write a
compiler? 

I have in my possesion the assembler source for an HP2100 Algol 60 compiler. 
Now, that's some real macho hacking. Especially with no subtract
instruction, and about 2 registers ..



-- 
Don		lindsay@k.gp.cs.cmu.edu    CMU Computer Science

"Imitation is not the sincerest form of flattery. Payments are."
- a British artist who died penniless before copyright law.