Subject: From: Date:

Concealed Scott Danks Wed, 10 May 2000 10:28:14 -0500

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 Wed, 10 May 2000 10:28:14 -0500
Subject:  Re: [ECS] I/O card

I have an I/O card that was working before with my events . . . . 

I know Mark changed the I/O-Port-byte where it has to be referenced now.  But I'm still
having trouble with it.  I have a PIA (8255) (Well actually three chips on a card from
Quatech PXB-721)  ANYWAY, you have four addresses to talk to on EACH chip.  One is the
control port, and the other three are the 8 bit ports, A, B, and C.  I have an event
that only has an entry like this to setup the chip:

Do   pia control     set   155

pia control is setup to be a type of i/o-port-byte at address 303hex = 771 Dec.  

This should setup the chip to be an input only.  Then I have to read the address 768
to get the input.  I defined the pia a as i/o-port-byte too.  Then I have an event that
looks like:

Do     pia input a      set     pia a

As I understand this is needed to make the i/o-port-byte work now.  Does this sound
like this is what is needed?  or do I misunderstand what's needed?  I may still have
a hardware problem too, but this did work before.

Any suggestions would be appreciated. 

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