AVR-Chat

Ummm...can't you just bang out a quickie programmer and use 
ponyprog?  They have some VERY SIMPLE programmer schematics on the 
site as well

http://www.lancos.com/prog.html


--- In AVR-Chat@yahoogroups.com, "Kathy Quinlan" <kat-yahoo@k...> 
wrote:
> 
> 
> > -----Original Message-----
> > From: Mike Murphree [mailto:mike@t...] 
> > Sent: Monday, 1 March 2004 12:34 PM
> > To: AVR-Chat@yahoogroups.com
> > Subject: Re: [AVR-Chat] Can this be done?
> > 
> > 
> > 
> > On Feb 29, 2004, at 10:11 PM, Kathy Quinlan wrote:
> > 
> > >
> > > Can I emulate easily an EEPROM with an AVR ?
> > >
> > > Problem: I have an Atmel USB DEV kit, it will not program the 
EEPROM
> > > via
> > > the parallel port like it should. Atmel have taken 3 months 
> > soo far and
> > > still it is not resolved.
> > >
> > > I need to get an urgent job done, so I was thinking of 
> > using an 8515 
> > > or Mega128 to emulate the EEPROM and download the code via RS-
232.
> > >
> > > The EEPROM is an AT25HP256, it is not the EEPROM that is 
> > faulty, it is 
> > > the GAL on the BOARD :o( (I wish they would email me the 
> > code for it 
> > > then I could knock something up.
> > >
> > > The two options I am toying with :
> > >
> > > #1 an AVR emulates the EEPROM
> > >
> > > #2 the AVR programs the EEPROM and then tri states after 
> > programming 
> > > so that the EEPROM is connected to the DEV board
> > 
> > How about using an AVR to program a SRAM, then connect that 
> > to your development board?
> 
> The EEPROM is question has the ability to do block reads, and is 
spi, so
> I can not make an SRAM do that :o(
> 
>  
> > ROM emulators used to be fairly common...
> > 
> > Mike
> > 
> > 
> > 
> >  
> > Yahoo! Groups Links
> > 
> > 
> > 
> >  
> > 
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