---Original Message----- From: Pioneer Microsystems To: PICLIST@MITVMA.MIT.EDU Date: Saturday, 2 August 1997 12:45 Subject: Re: 16C73 Port A problems >At 10:09 PM 7/31/97 -0400, you wrote: >>I have the ADCON 1 set to 04 hex and the TRIS A register configured to give >>bits 4 and 5 as outputs. When I write port a with a BSF instruction I can >>toggle bit 5 but not bit 4. The Simulator shows it working ok but not the >>emulator. Anyone have any ideas? I already changed the Bondout chip >>thinking I had a blown port. As usual these problems happen on deadline and >>tend to be show stoppers. >> This set off a lightbulb in my head - We had a similar fault, that was reproducable across 2 different make ICE's - Parallax and IcePic - I contacted IcePic via email - but can't find response. I'm *fairly* sure they said it was a bondout chip bug. We ended up coding around it and using another port bit - this may not be an option for you. BTW, is the bondout chip a 74 or a 74A? Just curious. >Gee, Lary, I dunno what your problem is, but how on earth did you get a >bondout chip? I have some Microchip hardware around here that could live >again if I had their special gold plated chips. I knew I was in trouble >when I called support and they said 'No sweat. We'll send you another. No >need to return the dead one. Have a nice day.' Sounds like you contacted the counter-universe. Life just doesn't go that smoothly in this one. MikeS