chunks of an Uint8Array

this works excellent for Espruino

var C = {
 OLED_WIDTH                 : 128,
 OLED_CHAR                  : 0x40,
 OLED_CHUNK                 : 128
};
WIDTH = 128;
HEIGHT = 64;
var buffer = new Uint8Array((WIDTH * HEIGHT)/ 8);
bufferLen = buffer.length;
var chunk = new Uint8Array(C.OLED_CHUNK+1);
chunk[0] = C.OLED_CHAR;

for (var p=0; p < bufferLen; p+=C.OLED_CHUNK) {
  console.log(p +"-"+(p+C.OLED_CHUNK));
  chunk.set(new Uint8Array(buffer,p,C.OLED_CHUNK), 1);
}

but anywhere else it causes something like "RangeError: Offset/length out of range" for chunk.

Any suggestions how to rewrite this line

 chunk.set(new Uint8Array(buffer,p,C.OLED_CHUNK), 1);

to work with other javascript engines ?