Re: [flashrom] External programmer update

[Reinder de Haan]

Hi,

I have some success using flashrom >serprog _> own avr frimware.

it needs some polishing the i will release schematics + source.

i doupt shift regs is the way to go..
i used a 74act574 (8 bit latch) for the low 8 bits
and dedicated io for the high bits (the other way around would have been 
  better)
if you used one 574/8 address bits you only need 8+<chip ctrl 
lines>+<(adresslines+7)/8)> io pins.
best would be to use a whole port for the datapins..

i will do a arduino posrt shortly.

greetings,
Reinder

Kyle Kienapfel wrote:
  On Fri, May 28, 2010 at 9:48 AM, fritz
&lt;fritzlists(a)gmail.com&gt; wrote:
  An update on my microcontroller-based external
serial programmer:

 It works.

 I can program 5V-only chips, in DIP32 form, or PLCC32 with an adapter.  The
 highest baud rate I've been able to make work is 115200, which makes things
 pretty slow.  Further experimentation may show that I could run a higher
 baudrate and maybe remove most of the `noop` delays in my I/O routines - but
 that's for another day.
 
 
 I was thinking of programming 2mbit flash chips with shift registers
 and an regular arduino and it didn't occur to me to use flashrom as
 software. When I get around to using them I might just have to spring
 for a megaduino. Sweet!
 
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