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ASIC, ASSP, SoC, FPGA Ė What's the Difference?

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rob18767
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Manager
Re: Ooh-ee!
rob18767   6/24/2014 9:00:56 AM
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I have worked on embedded systems for 30 years and I have the same problem. 

My view, is that if the system can't run games, it's not an embedded system ;)

That said the Altera 'SoC's are interesting. They are expensive however they cut down development risk. That said, a $12 ARM processor and a separate $15-$25 FPGA will probably do the same job. However if you don't know what you are doing then clearly the Altera 'SoC's eliminate that risk. 

 

 

zeeglen
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Re: backwards
zeeglen   6/23/2014 10:30:36 PM
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@betajet Watch out for negative zeroes!

And divide-by-zero?  Multiplication is repeated addition, division is repeated subtraction.  The concept of divide-by-zero simply means that one can subtract zero from a quantity forever without changing the value of that quantity.

So why do computing machines have such a problem with this?

(note: this is not intended to be completely serious)

betajet
User Rank
CEO
Re: backwards
betajet   6/23/2014 10:09:24 PM
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Max wrote: I remember the days when you could only use 8-character variable names...

You got to use eight?  Pfui, I only got 6.  The Univac 1100 series had 36-bit words, so you could fit six 6-bit ASCII upper-case characters in a single word and compare names as integers.  Watch out for negative zeroes!

On the PDP-11 you could fit 6 characters in 32 bits.  Magic, you ask?  Yes indeed, a magic spell called DEC RADIX-50 which encoded 26 upper-case letters plus 10 digits plus a few punctuation marks into a number from 0-39, and then multiplied the first character by 1600, the second by 40, the third by 1, and added them all up.  So why "RADIX-50" instead of 40?  Well, we PDP-11 dudes always preferred thinking in octal :-)

alex_m1
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CEO
Re: backwards
alex_m1   6/23/2014 6:09:30 PM
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> Think yourself lucky -- I remember the days when you could only use 8-character variable names and the characters all had to be letters or numbers or underscores and you couldn't start with a number -- and we considered ourselves to be lucky!!!

Max , think yourself lucky - i remember the days when i was tasked with creating a world out of emptiness - no where to store variables - and i considered myself to be lucky.

Garcia-Lasheras
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Blogger
Re: Ooh-ee!
Garcia-Lasheras   6/23/2014 4:39:31 PM
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@Max: "live "Radio Show" starting at 2:00pm Eastern on Friday 11th July"

Interesting topic and even more interesting hosts ;-)

I'll be there waiting for you with my white trousers & shirt and my red scarf & "belt": Sanfermin time at Navarra again!!

Remember: No bull!! | EETimes  LOL



Max The Magnificent
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Re: Ooh-ee!
Max The Magnificent   6/23/2014 4:38:13 PM
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@Andrew: Is the definition of embedded in the context of embedded systems that heavily varied?

Oh to be young and innocent once again. If the definition were so simple, then experianced engineers wouldn't have so much trouble saying "This is definatly an embedded system while that certainly isn't."

So, we'll be seeing you at the chat on Friday 11th July, right? LOL

Wnderer
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CEO
Re: Ooh-ee!
Wnderer   6/23/2014 4:34:45 PM
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@kfield: I am still having trouble over the definition of embedded. :-)

It's easy. I'll use it in a sentence.

Embedded by 10 and emup by 6.


AndrewAPTemple
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Rookie
Re: Ooh-ee!
AndrewAPTemple   6/23/2014 4:32:45 PM
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An entire debate? Is the definition of embedded in the context of embedded systems that heavily varied? If it's not a relatively specialized, computerized system that is often embedded in a bigger system, then I have been misleading a lot of people over the years. 

Max The Magnificent
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Re: Ooh-ee!
Max The Magnificent   6/23/2014 4:13:32 PM
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@kfield: I am still having trouble over the definition of embedded. :-)

Fear not Oh leader of men (and boys) ... legendary embedded guru Jack Ganssle and yours truly are going to be having a debate about this very topic in a live "Radio Show" starting at 2:00pm Eastern on Friday 11th July -- after we've talked for 30 minutes, everyone else will be able to join us in an online chat. I'll be posting a blog about this in a day or so when it's all set up in the system. 

Max The Magnificent
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Re: backwards
Max The Magnificent   6/23/2014 4:09:47 PM
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@Wnderer: I read documents coded in acronyms and write code documented with LongVariableNames.

Think yourself lucky -- I remember the days when you could only use 8-character variable names and the characters all had to be letters or numbers or underscores and you couldn't start with a number -- and we considered ourselves to be lucky!!!

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