Re: A83: Do you even test your Ti-83 programs? (fwd)
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Re: A83: Do you even test your Ti-83 programs? (fwd)
>Your program uses the 2 input/o pins as output and pulls them logic >high
>and low. Right?
Yes, but the 2 lines feed and clock a shift register(s) so what you
see on the outside is parallel data in as many groups of 8 bits as
your application requires. The main hassle was getting those two
lines to take the data from the ASM program without locking up on the
return. TI's C0 thru C3's sent to port zero (from the "official" TI-83
page) present the data, but hang up the program -- as in pull out the
batteries, and start again from scratch. Setting the high bits on the
last transfer seems to get us past that. As soon as semester grades
are out, (looks like an "all nighter" for this procrastinator), I'll
get back to this and pass same along to you.
-- Frank
References: