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Addressing external memory?

 
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livingston



Joined: 15 Nov 2009
Posts: 131
Location: New Orleans, LA US

PostPosted: Tue Dec 08, 2009 8:41 pm    Post subject: Addressing external memory? Reply with quote

I'm fairly certain I know the answer to this, but is there any way to get the FV-1 to interface with external memory? Even kind of a kludge solution?

By this I mean, not program memory but delay memory, to allow coding a looper, or any recorder requiring more than 2 seconds of delay (2 seconds of course only available at 16khz).
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frank



Joined: 19 Oct 2005
Posts: 972

PostPosted: Wed Dec 09, 2009 9:03 am    Post subject: Reply with quote

Nope, there is no external memory interface in the chip.
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wurgle



Joined: 22 Feb 2010
Posts: 4
Location: Berkshire, United Kingdom

PostPosted: Mon Feb 22, 2010 5:37 am    Post subject: EPROM interface Reply with quote

Hi

Is there no way the EPROM interface could be used to add extra RAM, something like the Microchip SRAM.

A basic PIC could be used as a memory manager?

The limited memory on the FV-1 is its limiting factor. A digital 24 bit IO so it could be paired with a high quality CODEC and pump up the 96dB SNR would also be really great for higher end stuff. Are there any plans for a FV-2?
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frank



Joined: 19 Oct 2005
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PostPosted: Mon Feb 22, 2010 9:53 am    Post subject: Reply with quote

Nope, data memory and program memory (EEPROM interface) are 100% separate so there is no way to use an external memory device.

No specific FV-2 plans but we are always looking at comments, market, etc.
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djmalan



Joined: 06 Mar 2009
Posts: 36

PostPosted: Sat Feb 27, 2010 5:02 am    Post subject: Reply with quote

Quote:
No specific FV-2 plans but we are always looking at comments, market, etc.

I dream about mb level memory,7 outputs ,14pot interfaces both analog and digital and latch or memory for this,internal selectable clock freq.,become possible to use as a digital mixer channel ,code protection ,internal and external eeprom interface,segment display output ,selectable with rotary encoder and 4 up down program change switch (2 for tens,2 for ones) ,9 bits of program change availability etc. Laughing
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frank



Joined: 19 Oct 2005
Posts: 972

PostPosted: Sun Feb 28, 2010 10:21 am    Post subject: Reply with quote

djmalan wrote:

I dream about mb level memory,7 outputs ,14pot interfaces both analog and digital and latch or memory for this,internal selectable clock freq.,become possible to use as a digital mixer channel ,code protection ,internal and external eeprom interface,segment display output ,selectable with rotary encoder and 4 up down program change switch (2 for tens,2 for ones) ,9 bits of program change availability etc. Laughing


Just add "and make it less than $2.00" and you would be perfect in marketing Cool
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livingston



Joined: 15 Nov 2009
Posts: 131
Location: New Orleans, LA US

PostPosted: Sun Feb 28, 2010 3:32 pm    Post subject: Reply with quote

Very Happy In all seriousness, Frank, I'd be willing to pay a chunk more than the price of the FV-1 for some upgraded features. I wouldn't expect anything quite as deluxe as the above, but just more expandability in terms of memory, a few more pot inputs or some kind of modularity with pot inputs, and faster pot tracking. A $20 chip isn't crazy to me if it had some of that expandability.
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djmalan



Joined: 06 Mar 2009
Posts: 36

PostPosted: Mon Mar 01, 2010 4:33 pm    Post subject: Reply with quote

Is there anyone who sells the FV-1 for 2$ ,I want nothing more.Because I haven't forget the days yet,that I used to pay 4$ for 4 pieces of PT2399 to get very simple reverb sound with using them in 4 comb filters. Smile
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MacroMachines



Joined: 12 Dec 2014
Posts: 70
Location: Detroit,MI

PostPosted: Thu Jul 07, 2016 10:42 pm    Post subject: Reply with quote

djmalan wrote:
Quote:
No specific FV-2 plans but we are always looking at comments, market, etc.

I dream about mb level memory,7 outputs ,14pot interfaces both analog and digital and latch or memory for this,internal selectable clock freq.,become possible to use as a digital mixer channel ,code protection ,internal and external eeprom interface,segment display output ,selectable with rotary encoder and 4 up down program change switch (2 for tens,2 for ones) ,9 bits of program change availability etc. Laughing


have you ever heard of a micro controller? Razz
check out the arduino teensy 3.2 or stm32f407 discovery board, both are under 20 dollars for the dev board and you can do all these things. I am using them with the FV-1 together and its fantastic.
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ice-nine



Joined: 24 May 2012
Posts: 125

PostPosted: Wed Jul 13, 2016 7:19 am    Post subject: Reply with quote

I do recall reading about 'Spin DV-1 Makes it to fab back in 2007', We never found out what the DV-1 was going to be and possibly never will now, I'm also guessing it would have been Keith Barr designed IC.

The Fv-1 is very popular with many commercial pedal builders now so I expect still quite a long life for this IC but it would be good for a new development of a more powerful DSP. A definite plus would be the ability to use an external 24bit/96kHz codec chip, a couple more control pots which would also mean more program lines to fit the coding in. I'm sure I can think of some other inclusions. Adding extra function of course will result in a more expensive DSP but i'm sure it would be worth it.
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