Re: Two ways to torture a comp teacher

[fadden@netcom.com (Andy McFadden)]

In article <31gt9b$j4j@news.iastate.edu>,
Ian Schmidt <irsman@iastate.edu> wrote:
>I did better than that in 9th grade.  We had a Corvus Constellation II
>network based on DOS 3.3; each account was essentially a 143k DOS 3.3
>disk with a HELLO program and the whole 9 yards :)  Anyhow, I pretty
>quickly was able to change all the HELLO programs in the public accounts
>to disable ^C, poke out the power-up-byte (to disable ^-Reset), and then
>demand a second password (with peek(49152) to prevent crashing INPUT :).
>Kept everyone nice n' locked out until I fixed it again, heh heh :)

To keep people from performing dastardly deeds, my high school computer
lab ran a hacked version of BASIC in the language card.  It disabled
POKE, PEEK, CALL, and every other command that you could use to disable
the language card and get into "normal" BASIC, and hence into the system.

They left an intentional back door, however, which I managed to find: there
is no bounds checking on PDL(). :-)

-- 
fadden@netcom.com (Andy McFadden)    [These are strictly my opinions.]     PGP

      Anyone can do any amount of work provided it isn't the work he is
        supposed to be doing at the moment.        -- Robert Benchley