Using an AT25512 EEPROM on ESP8266: (using d8dec28 build from forum)

var fakespi=new SPI();
pinMode(13,"output");
fakespi.setup({sck:D4,miso:D5,mosi:D12});
var eeprom=require("AT25").connect(fakespi, 128, 512, D13);

returns:

eeprom.read(0,10);
=new Uint8Array(10)

pinMode(13,"output");
SPI1.setup({sck:D4,miso:D5,mosi:D12});
var eeprom=require("AT25").connect(SPI1, 128, 512, D13);
doesnt:
eeprom.read(0,10);
=new Uint8Array([1, 1, 1, 1, 1, 1, 1, 1, 1, 1])

Trying to write does not result in data being written to the EEPROM.

Should be returning (both return this from a pico), and I can write it from the pico too.
[115, 99, 114, 101, 119, 98, 97, 108, 108, 101]

On one occasion, I was able to make this work with software SPI, but I'm not sure what changed, and I cannot reproduce that finding.

When using software SPI (on ESP8266), trying to send an array of bytes resets the board:
fakespi.send([0,0,0,0,255,255,128,64,255,64,192,128,255,255])