On 06/10/2019 18:55, Patrick Rogers wrote:
On 2019-10-06 10:18 a.m., David Hendricks wrote:
On Sat, Oct 5, 2019 at 8:31 PM Patrick Rogers patrickrogers@national.shitposting.agency wrote:
My suggestion would be to purchase a Raspberry Pi, which is a cheap Linux computer that has builtin hardware support needed to flash ROMs. It might be less trouble and more easier to get. The Pi, microSD card, case, breadboard jumper cables and breadboard (for easier seating of BIOS chip) may cost around $50 USD.
The Raspberry Pi certainly makes a nice, fast flasher, however the IO pins are connected to 3.3V rails so you'll need to be careful to use it with 3.3V flash chips only (not 1.8V).
One of the good things about the RPi is that it is popular. You should be able to find answers to your issues without too much difficulty.
I *highly* recommend that when using any cheap SBC as a flashing device that you power it from the mains electricity. This means a transformer that plugs into the wall and gives 5V on the other side. Trying to power it using the "5V" that a USB cable carries from the USB port on a computer is not as reliable.
Aside from necessities such as SD cards to carry the OS, try to minimize the amount of peripherals attached to the SBC. This will increase the power available for the flashing process.
I didn't know that there are chips that use 1.8 volts, I don't know much about electric devices, but could you just connect a resistor or something to reduce the voltage?
This is the first I've heard of this too. If anybody has any examples I would be greatly appreciative.
Andrew