Re: Broken/Fried Parallel port...
On 30 Jun 2006 06:08:22 -0700, lmcgill2@xxxxxxxx wrote:
Thanks Dave for the help, I am trying to read from the data register.
To my knowledge, the 0-bit of the data register is pin 2 on the
parallel port, and the 7-bit is pin 9. The pin that is giving me wierd
results is pin 8. When i say wierd i mean it won't go "high" when
being told to do so by my ADC IC. In addition, my port is in
bi-direction mode, thanks, Lucas.
You might want to consider using the parallel port status lines
to input your data. You would probably need two ADC chips to do
this, but it might be an easier setup. I've made the below setup
to input data into my parallel port.
http://www.geocities.com/zoomkat/status.htm
.
Relevant Pages
- Re: OT: DOS programming EPP
... There seems to be *no* specifications or equivalent circuits for the parallel port as implemented on the ASICs used in modern PCs. ... it is completely unknown as to the maximum safe sink current to a logic low pin or the maximum source current from a logic high pin. ... The EPP page assumes you did. ... This way of programming was used by the old "standard" printer interface. ... (sci.electronics.design) - Re: OT: DOS programming EPP
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... There seems to be *no* specifications or equivalent circuits for the parallel port as implemented on the ASICs used in modern PCs. ... it is completely unknown as to the maximum safe sink current to a logic low pin or the maximum source current from a logic high pin. ... The EPP page assumes you did. ... CONTROL bit 5 defaults low. ... (sci.electronics.design) |
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