6502.org Forum  Projects  Code  Documents  Tools  Forum
It is currently Sat Nov 16, 2024 12:07 pm

All times are UTC




Post new topic Reply to topic  [ 132 posts ]  Go to page Previous  1 ... 3, 4, 5, 6, 7, 8, 9  Next
Author Message
 Post subject: Re: 65C816 vs 68000
PostPosted: Wed Nov 30, 2016 4:56 pm 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8491
Location: Midwestern USA
ttlworks wrote:
Edit: Spotted something neat at Singer Elektronik for 2320,50€. Have fun...

Only 2329.50€. Why, I think I'll order two or three of them. :lol:

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 5:46 am 
Offline
User avatar

Joined: Sat Dec 07, 2013 4:32 pm
Posts: 246
Location: The Kettle Moraine
Just replacing the ROM with a PROM, EPROM, EEPROM, Flash, etc. would make the '134 and '265 extremely useful items.

@BigEd There could be numerous reasons for it; it could be that since they have never received a shipment yet they haven't changed its status. Also note that the chip doesn't show up in the normal listings. The only way to find it is to do an explicit part number search. I ordered some; the worst that can happen is that in 6 months I have to cancel the order.


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 6:52 am 
Offline
User avatar

Joined: Tue Nov 16, 2010 8:00 am
Posts: 2353
Location: Gouda, The Netherlands
Quote:
Just replacing the ROM with a PROM, EPROM, EEPROM, Flash, etc. would make the '134 and '265 extremely useful items.

It would make them more useful, but I don't think they'll take market share away from modern embedded controllers, which are decades ahead in development. So, it will be very hard to justify the cost of a new mask set.


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 7:32 am 
Offline
User avatar

Joined: Fri Nov 09, 2012 5:54 pm
Posts: 1431
BigDumbDinosaur wrote:
Why, I think I'll order two or three of them. :lol:

Singer Elektronik only sells used stuff, and you can't tell how many of those machines they have on stock...
or for how long they keep it on stock before scrapping it when nobody would be going to buy it.

Hey, you could found a little startup and name it "Money Burners Unlimited". :mrgreen:

If you are no longer able to solder them tiny SMD packages, bonding the chips instead might make sense. ;)

;---

But back on topic.

Because 68332 might go out of production, another interesting 68k related microcontroller (without internal RAM\ROM)
might be the slightly over_priced 68340.

What had triggered our interest in Fido1100 was, that before this microcontroller was released Innovasic's business was about
cloning old chips with ASICs (80186 for instance), and back then they had stated that Fido1100 would be available until 2038 or such...
although they didn't tell in which IC package. :lol:

Unfortunately, the recent datasheet seems to be less detailed than the old datasheet,
and now they don't state on their homepage anymore how long the chip will be in production.
IMHO this isn't a good sign...

;---

Remembering the myriad of PIC microcontrollers with identical core, but with odd and slightly different peripherals,
what I'd like to see someday would be something like the Parallax Propeller, just with some 6502\65816 cores.


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 2:47 pm 
Offline
User avatar

Joined: Fri Nov 09, 2012 5:54 pm
Posts: 1431
While looking a bit around in the internet, I accidentally stumbled over the 740 microcontroller family from Renesas.
Anybody familiar with this ?

Attachment:
740_reg.png
740_reg.png [ 35.64 KiB | Viewed 1337 times ]


Attachment:
740_op.png
740_op.png [ 86.23 KiB | Viewed 1337 times ]


Attachment:
rej09b0322_740sm.pdf [1.05 MiB]
Downloaded 96 times


Edit: looks like the 740 wasn't mentioned for the first time here in this forum:
http://forum.6502.org/viewtopic.php?f=1&t=1212&hilit=740&sid=608d9d74dba38d77b1d66048818ad33f
http://forum.6502.org/viewtopic.php?f=4&t=216&p=1388&hilit=740&sid=608d9d74dba38d77b1d66048818ad33f&sid=608d9d74dba38d77b1d66048818ad33f#p1388


Last edited by ttlworks on Fri Dec 02, 2016 12:35 pm, edited 1 time in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 2:55 pm 
Offline
User avatar

Joined: Thu Dec 11, 2008 1:28 pm
Posts: 10980
Location: England
An interesting find, very like a 'C02. Two interesting things about it:
Quote:
When ADC instruction is executed in decimal operation mode (D = 1), execute at least one instruction after the ADC instruction before executing a SEC, CLC, or CLD instruction
Quote:
X modified operation mode flag T
Bit 5
This flag determines whether arithmetic operations are performed via the Accumulator or directly on a memory location


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 3:01 pm 
Offline

Joined: Sun Apr 10, 2011 8:29 am
Posts: 597
Location: Norway/Japan
Haha, there's something familiar with that picture, for this forum..

I did run into the 740/38k maybe a couple of years ago. But I had forgotten about it.


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 4:14 pm 
Offline
User avatar

Joined: Thu Dec 11, 2008 1:28 pm
Posts: 10980
Location: England
More things there too:
    multiply and divide (at least optionally)
    ones-complement operation
    rotate by four bits
I think this little machine deserves a review of its own!


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Thu Dec 01, 2016 8:40 pm 
Offline
User avatar

Joined: Fri Aug 30, 2002 1:09 am
Posts: 8541
Location: Southern California
ttlworks wrote:
While looking a bit around in the internet, I accidentally stumbled over the 740 microcontroller family from Renesas.
Anybody familiar with this ?

Did you see any distributors? Howard Speegle of Diva Automation had various products using Renesas 6502-based microcontrollers, but gradually had to give up with Renesas because they started insisting on larger and larger minimum orders, finally 2,000 pieces, and with long lead times.

_________________
http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Fri Dec 02, 2016 7:29 am 
Offline
User avatar

Joined: Fri Nov 09, 2012 5:54 pm
Posts: 1431
Renesas lists as distributors companies like Arrow, Avnet, RS Components, Rutronik.
Usually, their sites and my browser don't seem to like each other... :)

Found this at Avnet:
https://products.avnet.com/shop/en/emea/microcontrollers/8-bit-microcontrollers#facet=ads_f14132_ntk_cs%3A%22740%22&
https://products.avnet.com/shop/en/emea/microcontrollers/8-bit-microcontrollers/m38d59ffhp-u1-3074457345629550402/

Edit: I just noticed there is a Wikipedia page about the 740:
https://en.wikipedia.org/wiki/Renesas_Electronics_740


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Fri Dec 02, 2016 9:01 am 
Offline

Joined: Sun Apr 10, 2011 8:29 am
Posts: 597
Location: Norway/Japan
One of the docs I downloaded had 'EOL announced' printed in red on every page (made it harder to read). When that mark was applied to the document is a bit difficult to tell, but somewhen after 2010 (2010 is mentioned in the doc, but I have another somewhere from 2010 as well, but without the EOL stamp).


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Fri Dec 02, 2016 9:56 am 
Offline
User avatar

Joined: Sat Dec 07, 2013 4:32 pm
Posts: 246
Location: The Kettle Moraine
ttlworks wrote:
there is a Wikipedia page about the 740:
https://en.wikipedia.org/wiki/Renesas_Electronics_740

That article is nice, but is misinformed about the 6510.


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Fri Dec 02, 2016 12:04 pm 
Offline
User avatar

Joined: Fri Nov 09, 2012 5:54 pm
Posts: 1431
Besides W65C134, W65C265 and Renesas 740 there might be other 6502 related microcontrollers.
I think we are just not aware of them because:

  • For some odd reason, chip manufacturers might be hesitant to admit openly and in public that their product could be based on and instruction set architecture which originates from the time "when cars had tail fins".
  • The "half-value time" of Terbium, what means the product life cycle of those devices.
  • When ordering large quantities of chips, customers could have different part numbers printed on them. (Anybody remembers the SDA2087 and the 80535 ?)

;---

BTW:
While the instruction set of the STMicroelectronics STM8 microcontroller family looks pretty different from the 6502,
the register set looks a little bit familiar... somehow.

Attachment:
stm8_reg.png
stm8_reg.png [ 15.8 KiB | Viewed 1270 times ]


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Fri Dec 02, 2016 4:00 pm 
Offline
User avatar

Joined: Thu May 28, 2009 9:46 pm
Posts: 8491
Location: Midwestern USA
KC9UDX wrote:
ttlworks wrote:
there is a Wikipedia page about the 740:
https://en.wikipedia.org/wiki/Renesas_Electronics_740

That article is nice, but is misinformed about the 6510.

Someone evidently fixed it, as I didn't see a reference to the 6510 in the article.

_________________
x86?  We ain't got no x86.  We don't NEED no stinking x86!


Top
 Profile  
Reply with quote  
 Post subject: Re: 65C816 vs 68000
PostPosted: Fri Dec 02, 2016 8:51 pm 
Offline
User avatar

Joined: Sat Dec 07, 2013 4:32 pm
Posts: 246
Location: The Kettle Moraine
BigDumbDinosaur wrote:
KC9UDX wrote:
ttlworks wrote:
there is a Wikipedia page about the 740:
https://en.wikipedia.org/wiki/Renesas_Electronics_740

That article is nice, but is misinformed about the 6510.

Someone evidently fixed it, as I didn't see a reference to the 6510 in the article.

Indeed so. I tend to forget that it can be done.

Wikipedia wrote:
2 December 2016
38.69.12.5
"...similar to the MOS Technology 6510..." The 6510 has no such capability.

15:59

+48



Thank you, whomever did that.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 132 posts ]  Go to page Previous  1 ... 3, 4, 5, 6, 7, 8, 9  Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 5 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: