6502.org Forum Projects Code Documents Tools Forum
It is currently Fri Nov 15, 2024 5:11 pm

View unanswered posts | View active topics


Board index » 6502.org Users Forum » Hardware

All times are UTC




Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 
  Previous topic | Next topic 
Author Message
floobydust
 Post subject: WDC65C51 chips
PostPosted: Fri Sep 20, 2013 1:28 pm 
Offline
User avatar

Joined: Tue Mar 05, 2013 4:31 am
Posts: 1385
Have been looking at some stock quantities on Mouser for the new chips and they have sold some. Anyone here on the forum picked some up and got them working? WDC have gone silent on trying to check out if there are some problems. I have a handful of new chips that flat don't work as replacements for older 6551 chips and no real options. Just wondering if anyone else has had any luck.

_________________
Regards, KM
https://github.com/floobydust
Top
 Profile  
Reply with quote  
BigDumbDinosaur
 Post subject: Re: WDC65C51 chips
PostPosted: Fri Sep 20, 2013 2:06 pm 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8490
Location: Midwestern USA
floobydust wrote:
Have been looking at some stock quantities on Mouser for the new chips and they have sold some. Anyone here on the forum picked some up and got them working? WDC have gone silent on trying to check out if there are some problems. I have a handful of new chips that flat don't work as replacements for older 6551 chips and no real options. Just wondering if anyone else has had any luck.

You may need to prod WDC on this. They usually do their best to ferret out problems.

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!
Top
 Profile  
Reply with quote  
floobydust
 Post subject: Re: WDC65C51 chips
PostPosted: Fri Sep 20, 2013 3:53 pm 
Offline
User avatar

Joined: Tue Mar 05, 2013 4:31 am
Posts: 1385
Well, they responded initially and said they were going to try and test on one of their new SXB boards. I sent them more detail obtained via a logic analyzer, plus sent them schematics and code being used to drive the chip. I even offered to send them a couple chips and one of my board sets to test with, but no reply since... and I've prodded with an additional email since then... dead silence. Maybe it's me or my hardware design, but it works with every other 6551 I have, but not a single WDC chip. So I can't rule out that a problem in the WDC chips exist. I was hoping that some other forum member might have gotten some chips and had some success.

_________________
Regards, KM
https://github.com/floobydust
Top
 Profile  
Reply with quote  
floobydust
 Post subject: Re: WDC65C51 chips
PostPosted: Wed Sep 25, 2013 10:41 am 
Offline
User avatar

Joined: Tue Mar 05, 2013 4:31 am
Posts: 1385
Well, just checked Mouser and their entire stock of PDIP 65C51 are gone. Either somebody bought the lot (pretty sure it was over 100 pieces) or they were pulled. No idea which, so will send them an email inquiry.

_________________
Regards, KM
https://github.com/floobydust
Top
 Profile  
Reply with quote  
BigDumbDinosaur
 Post subject: Re: WDC65C51 chips
PostPosted: Wed Sep 25, 2013 8:56 pm 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8490
Location: Midwestern USA
floobydust wrote:
Well, just checked Mouser and their entire stock of PDIP 65C51 are gone. Either somebody bought the lot (pretty sure it was over 100 pieces) or they were pulled. No idea which, so will send them an email inquiry.

I called my rep there (we have a commercial account) and she said lead time of two weeks. Evidently the entire stock was purchased by someone, as she said there was no indication that they were pulled and returned.

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!
Top
 Profile  
Reply with quote  
floobydust
 Post subject: Re: WDC65C51 chips
PostPosted: Wed Sep 25, 2013 10:40 pm 
Offline
User avatar

Joined: Tue Mar 05, 2013 4:31 am
Posts: 1385
I received a reply from Mouser, same thing... all purchased. Wow, who knew?

_________________
Regards, KM
https://github.com/floobydust
Top
 Profile  
Reply with quote  
BigDumbDinosaur
 Post subject: Re: WDC65C51 chips
PostPosted: Thu Sep 26, 2013 4:30 pm 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8490
Location: Midwestern USA
floobydust wrote:
I received a reply from Mouser, same thing... all purchased. Wow, who knew?

The PLCC ones are readily available. If you can use it, the PLCC package makes for a tighter board layout.

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!
Top
 Profile  
Reply with quote  
floobydust
 Post subject: Re: WDC65C51 chips
PostPosted: Thu Sep 26, 2013 4:38 pm 
Offline
User avatar

Joined: Tue Mar 05, 2013 4:31 am
Posts: 1385
Yup, already have some PLCC 65C51 chips and working on a board layout for all PLCC sans the SRAM.

_________________
Regards, KM
https://github.com/floobydust
Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Board index » 6502.org Users Forum » Hardware

All times are UTC


Who is online

Users browsing this forum: barnacle and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
6502.org is an ongoing project by Mike Naberezny and contributors.