What does PUSHJ do?

Allison ajp166 at bellatlantic.net
Thu May 12 08:57:54 CDT 2005


>
>Subject: Re: What does PUSHJ do?
>   From: Johnny Billquist <bqt at Update.UU.SE>
>   Date: Thu, 12 May 2005 10:30:31 +0200 (CEST)
>     To: cctalk at classiccmp.org
>
>Not a good example. It should really be JMS FOO, and at the label FOO you
>need to place a 0, which is overwritten by the return address. (What
>assembler do you usually use, btw? Comments come after a slash... :-) )

Mindeye.  Neumonics to octal on paper usually.  My 8 doesn't have any 
mass store not even TTY.  I plan to take some EEprom and make a RS08
or other disk equivelent.

>Eh? No. The PDP-8/a don't have any stack IOT. Same set as the 8/e. The
>only difference is how some illegal combinations of OPR instructions act.

I've used one that did.  Might have been a hack.  The 6120 however does
and the DEC purchase spec is clear on that too. It's still done with IOTs.


Allison



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