[Coco] Telnet to your CoCo.. and invite 6 of your friends

Willard Goosey goosey at virgo.sdc.org
Wed Dec 2 16:06:23 EST 2009

On Tue, Dec 01, 2009 at 08:19:45PM -0600, Boisy G. Pitre wrote:
> I appreciate the sentiment Willard, but there are other people who
> are more deserving of that moniker than I.
Well, OK.  But you are one of the OS-9 masters.

> Not only that, but the "old" system call code is still in memory, so
> you can do some pretty neat things. Back at Microware, we would
> store off the original system call pointer; our custom system call
> would then do its thing (for example, increment a counter to keep
> track of the number of times a particular system call was called),
> then use the original pointer to jump to the old system call code.

Heh, cool. I  hadn't thought of that, but yes, that would let you
easily expand system calls.

> This behavior is very much like class inheritance in object oriented
> languages.

An object is just a struct with some function pointers in it. ;-) OK,
not really, I'm just kidding, don't hurt me....

Willard Goosey  goosey at sdc.org
Socorro, New Mexico, USA
I search my heart and find Cimmeria, land of Darkness and the Night.
  -- R.E. Howard

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