6502.org Forum Projects Code Documents Tools Forum
It is currently Sun Nov 24, 2024 12:46 am

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
  [ 7 posts ] 
  Previous topic | Next topic 
Author Message
TMorita
PostPosted: Fri Oct 11, 2013 1:53 am 
Offline

Joined: Sun Sep 15, 2002 10:42 pm
Posts: 214
I fixed the wikipedia article on the 65C134 because it said "65816 compatible" and now I notice
the 65C134 datasheet says it too...

from http://www.westerndesigncenter.com/wdc/ ... 5c134s.pdf

• W65C02S compatible CPU
y 8-bit parallel processing
y Variable length stack
y True indexing capability
y Fifteen addressing modes
y Decimal or binary arithmetic
y Pipeline architecture
y Fully static CPU
y W65C816S 16-bit CPU compatible

???

Toshi
Top
 Profile  
Reply with quote  
BigDumbDinosaur
PostPosted: Fri Oct 11, 2013 2:33 am 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8514
Location: Midwestern USA
TMorita wrote:
I fixed the wikipedia article on the 65C134 because it said "65816 compatible" and now I notice
the 65C134 datasheet says it too...

from http://www.westerndesigncenter.com/wdc/ ... 5c134s.pdf

• W65C02S compatible CPU
y 8-bit parallel processing
y Variable length stack
y True indexing capability
y Fifteen addressing modes
y Decimal or binary arithmetic
y Pipeline architecture
y Fully static CPU
y W65C816S 16-bit CPU compatible

???

Toshi

Not sure what that's all about? Compatible in what way? :?: :?: :?:

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!
Top
 Profile  
Reply with quote  
Dr Jefyll
PostPosted: Fri Oct 11, 2013 2:45 am 
Offline
User avatar

Joined: Fri Dec 11, 2009 3:50 pm
Posts: 3367
Location: Ontario, Canada
According to WDC's data sheet, the W65C134S consists of a W65C02S Central Processing Unit (plus ROM and so on). Presumably its '02 core has no 16-bit functionality -- it is not '816 compatible.
Hmmm... but the data sheet does list the '134 as "W65C816S 16-bit CPU compatible." Merely meaning there's an upward migration path???

_________________
In 1988 my 65C02 got six new registers and 44 new full-speed instructions!
https://laughtonelectronics.com/Arcana/ ... mmary.html


Last edited by Dr Jefyll on Fri Oct 11, 2013 2:53 am, edited 1 time in total.

Top
 Profile  
Reply with quote  
ElEctric_EyE
PostPosted: Fri Oct 11, 2013 2:53 am 
Offline

Joined: Mon Mar 02, 2009 7:27 pm
Posts: 3258
Location: NC, USA
Dr Jefyll wrote:
....but WDC does list the '134 as "W65C816S 16-bit CPU compatible." Meaning there's an upward migration path???

It does. 2010 Datasheet though:


Attachments:
from 65c134 datasheet.jpg
from 65c134 datasheet.jpg [ 32.95 KiB | Viewed 805 times ]

_________________
65Org16:https://github.com/ElEctric-EyE/verilog-6502
Top
 Profile  
Reply with quote  
Dr Jefyll
PostPosted: Fri Oct 11, 2013 3:17 am 
Offline
User avatar

Joined: Fri Dec 11, 2009 3:50 pm
Posts: 3367
Location: Ontario, Canada
ElEctric_EyE wrote:
2010 Datasheet though
2010 is the date on the (presumably latest) version of the data sheet, currently posted on WDC's site. Page three of the data sheet says, "The W65C02S instruction set is compatible with the W65C802S and W65C816S, 16-bit microprocessors and the W65C832S, 32-bit microprocessor." (W65C832S 32-bit microprocessor... really?! I thought we'd given up on that! :roll: )

So, yeah -- they seem to be talking about the upward migration path. The word "compatible" really isn't appropriate, at least not without an accompanying explanation.

_________________
In 1988 my 65C02 got six new registers and 44 new full-speed instructions!
https://laughtonelectronics.com/Arcana/ ... mmary.html
Top
 Profile  
Reply with quote  
BigDumbDinosaur
PostPosted: Fri Oct 11, 2013 3:46 am 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8514
Location: Midwestern USA
Dr Jefyll wrote:
ElEctric_EyE wrote:
2010 Datasheet though
2010 is the date on the (presumably latest) version of the data sheet, currently posted on WDC's site. Page three of the data sheet says, "The W65C02S instruction set is compatible with the W65C802S and W65C816S, 16-bit microprocessors and the W65C832S, 32-bit microprocessor." (W65C832S 32-bit microprocessor... really?! I thought we'd given up on that! :roll: )

So, yeah -- they seem to be talking about the upward migration path. The word "compatible" really isn't appropriate, at least not without an accompanying explanation.

I've yet to figure out how WDC does these data sheets. Sometimes they seem to be completely at sea.

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!
Top
 Profile  
Reply with quote  
BigEd
PostPosted: Fri Oct 11, 2013 9:03 am 
Offline
User avatar

Joined: Thu Dec 11, 2008 1:28 pm
Posts: 10986
Location: England
I think Jeff has it: they mean to say that the '816 is a compatible upgrade to the 'C02.
Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 7 posts ] 

Board index » 6502.org Users Forum » Hardware

All times are UTC


Who is online

Users browsing this forum: No registered users and 41 guests

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:  
cron
6502.org is an ongoing project by Mike Naberezny and contributors.