D/A 558 problems

Archiver

I set up a d/a converter with 0-10 v using a 74hc164 and ad558 from
Gilliands second book page 190. After programing the stamp, the
AD558 will only change voltage if I shut off it's independant power
supply and then turn it back on. What have I hooked up wrong...the
CE???

Second I cannot for the life of me figure out these two lines of code:
there:
goto there

Isn't it an infinite loop? Why would you terminate the program with
this command?

Thank you everyone!!!!

Archiver

At 08:19 AM 2/19/04 +0000, flightline2004 wrote:
>I set up a d/a converter with 0-10 v using a 74hc164 and ad558 from
>Gilliands second book page 190. After programing the stamp, the
>AD558 will only change voltage if I shut off it's independant power
>supply and then turn it back on. What have I hooked up wrong...the
>CE???
>
>Second I cannot for the life of me figure out these two lines of code:
>there:
>goto there
>
>Isn't it an infinite loop? Why would you terminate the program with
>this command?

To prevent it from going into sleep mode which will toggle the pins
occasionally.


>Thank you everyone!!!!
>
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Archiver

> there:
goto there


> To prevent it from going into sleep mode which will toggle the pins
occasionally.
>
>

Oh I see that would be bad...this will then lock out the program from
doing any other routines. Also, I will check again but my AD558
seems not to run without those lines. They should have no effect on
the AD558, right? Shouldn't the AD558 work without the code if the
code is just there to keep the stamp from falling asleep?
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