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TMorita
PostPosted: Fri Oct 11, 2013 1:53 am 
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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
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BigDumbDinosaur
PostPosted: Fri Oct 11, 2013 2:33 am 
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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? :?: :?: :?:

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Dr Jefyll
PostPosted: Fri Oct 11, 2013 2:45 am 
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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???

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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.

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ElEctric_EyE
PostPosted: Fri Oct 11, 2013 2:53 am 
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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 798 times ]

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Dr Jefyll
PostPosted: Fri Oct 11, 2013 3:17 am 
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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.

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https://laughtonelectronics.com/Arcana/ ... mmary.html
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BigDumbDinosaur
PostPosted: Fri Oct 11, 2013 3:46 am 
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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.

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BigEd
PostPosted: Fri Oct 11, 2013 9:03 am 
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I think Jeff has it: they mean to say that the '816 is a compatible upgrade to the 'C02.
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