Motorola 56000 DSP. - Page 2

meynaf · 09 August 2018, 11:24

Wouldn't an ordinary GPU be more efficient and cheaper ?

AJCopland · 09 August 2018, 13:38

meynaf, it would in some ways, a full GPU with OpenGL/ES2 acceleration perhaps.

However you'd also need much more complex drivers, and it would do nothing to speed up CPU side floating point calculations.

I put the alternative DSP out there just as an idea/example.

meynaf · 09 August 2018, 13:55

Quote:

Originally Posted by AJCopland

(...) it would do nothing to speed up CPU side floating point calculations.

Neither would a DSP ?

AJCopland · 09 August 2018, 17:18

I mean like the Atari Falcon demos from earlier in the thread.
It's much easier to put a chunk of data at a memory location, tell the dsp to do something with it and use the results than it is to do the same via a GPU.

Obviously on PC with an API like OGL/DX/etc it's not that hard.

aperez · 11 September 2018, 01:48

A much better solution might be something like the dsPIC33EV256GM102T-I/SO, which you can get for less than $4 (3 GBP) in single quantities, is available in an SOIC-28 form factor, is 5 volt tolerant (runs directly on 5V), has 256KB ECC Flash, and 16KB RAM on-die, and runs at up to 70MHz.

In theory, this could be connected to a clockport.

Further details on practical applications at https://hackaday.com/tag/dspic33/

musashi5150 · 21 September 2018, 08:33

Quote:

Originally Posted by redblade

It started in ST Format issue 74, I have the first 2 issues in the zone

Had a little bit of a read in my lunch yesterday. Looks entertaining enough, so I grabbed scans of all 6 parts and I've stuck them in The Zone! if you (or anyone else) is interested

11 September 2018, 01:48	#25
aperez Registered User Join Date: Aug 2008 Location: San Francisco Bay Area Posts: 94	A much better solution might be something like the dsPIC33EV256GM102T-I/SO, which you can get for less than $4 (3 GBP) in single quantities, is available in an SOIC-28 form factor, is 5 volt tolerant (runs directly on 5V), has 256KB ECC Flash, and 16KB RAM on-die, and runs at up to 70MHz. In theory, this could be connected to a clockport. Further details on practical applications at https://hackaday.com/tag/dspic33/ Last edited by aperez; 11 September 2018 at 02:01.

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09 August 2018, 11:24	#21
meynaf son of 68k Join Date: Nov 2007 Location: Lyon / France Age: 51 Posts: 5,323	Wouldn't an ordinary GPU be more efficient and cheaper ?

09 August 2018, 13:38	#22
AJCopland Registered User Join Date: Sep 2013 Location: Beeston, Nottinghamshire, UK Posts: 238	meynaf, it would in some ways, a full GPU with OpenGL/ES2 acceleration perhaps. However you'd also need much more complex drivers, and it would do nothing to speed up CPU side floating point calculations. I put the alternative DSP out there just as an idea/example.

09 August 2018, 17:18	#24
AJCopland Registered User Join Date: Sep 2013 Location: Beeston, Nottinghamshire, UK Posts: 238	I mean like the Atari Falcon demos from earlier in the thread. It's much easier to put a chunk of data at a memory location, tell the dsp to do something with it and use the results than it is to do the same via a GPU. Obviously on PC with an API like OGL/DX/etc it's not that hard.

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