nelson@avsdS.UUCP (02/15/84)
I'm not familiar with Terrapin Logo for Apple, but there are things in
the c64 version which lead me to believe it's a direct derivative of
Apple Logo (why not, same processors to start with). I am very impressed
with it, finding features that almost make me wonder "wow, how'd they
get all that stuff in there anyhow?". It comes with a utitlity disk
crammed with demos and other interesting things. All this for $40 at
Toys 'R Us!
However I have found a bug in the graphics and Commodore has not responded
to my second letter on this, nor to my second call. Worse yet they lied
when I called and said a reply had been sent out (I had directed my
letter to a specific person). The bug is seen in the setxy command.
Anyone with c64 Logo please try this and tell me if you see what I see.
What you should see is lines as follows:
_________________
________________
_________________
________________
_________________
________________
What I see is some variant on the following:
_________________
________________
________________________________
________________
_________________
________________________________
Whoops! Looks like an address bit getting dropped somewhere!
Here's the test procedure. The stuff in the repeat between square brackets
has to be entered as one line, of course. I only typed it this way for
readability. This bug can make some pretty-pattern-generators generate
some not so aesthetic pictures.
to testy
make "y 0
rt 90
pu
repeat 50 [
setxy 0 :y pd
fd 40
make "y :y + 1
pu
setxy 0 :y pd
fd -40
]
end
Glenn at Ampex