Re: How do I add firmware to a card?

[Tristan Mumford <xtristan.xmumford@xgmail.xcom>]

RedskullDC wrote:

> 
> "Tristan Mumford" <xtristan.xmumford@xgmail.xcom> wrote in message
> news:459bad73$0$38173$c30e37c6@lon-reader.news.telstra.net...
> 
>> Ah nice. I'm surprised I've never seen that project page. Thanks for
>> that. I
>> like the writeup too.
>>
>> Is there anything you haven't interfaced a flash ROM to?
> 
> Flash roms are FUN!
> 
>> That reminds me. I got some nice ones recently with a separately
>> protected bootblock. Problem is it needs a +12v rail to enable writing.
> 
> The 28F circuit in the design archive is for 12V flash chips.
> Just need 2 x IN914 diodes and a switch.
> 5v through one diode directly to the programming pin
> 12v through a switch and the other diode to the programming pin.
> Diodes stop the 12V feeding back to the 5V circuit.
> You could put an LED (with appropriate series resistor) on the 12v side
> to indicate when programming voltage is present.

Yeah true. Thats a good idea.
I like LEDs too. Very handy things.
> 
> 
> Try www.futurlec.com.au for your electronic bits. They have a big range
> of crystals/oscillators, as well as uController stuff fantastically cheap.
> Postage is very reasonable. They are slightly cheaper for AUS purchasers
> than the international www.futurlec.com site, but only have a limited
> range. Purchased a number of things over the years, never had a drama.

I've bought from futurlec.com.au a few times. Found them great. I'll have to
look at the international site.

> 
> For example, the international site has a great range of new "mini'
> boards: SD Card interface $4.90

Ooooohh.

Can I ask a bit more about the 256 byte memory area?
It's been mentioned that banking it is an option. What's the best method?
Because I will need more than this.

I don't see why it would be much harder to load raw data ( no fs) from a USB
mass storage device than the loading dos image example you so courteously
made.
Just as a first test. Know what I mean? Anyway it's not hard to write raw
data to USB mass storage in linux to shove into the apple.

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