This is what the output from flashrom looked like:
j@j-desktop:~$ sudo flashrom -w 61M28C16.ROM
flashrom v0.9.3-r1282 on Linux 2.6.38-7-generic (x86_64), built with libpci 3.1.7, GCC 4.5.2, little endian
flashrom is free software, get the source code at
http://www.flashrom.org
Calibrating delay loop... OK.
No coreboot table found.
Found ITE Super I/O, ID 0x8726.
Found chipset "NVIDIA MCP61", enabling flash write... This chipset is not really supported yet. Guesswork...
SPI on this chipset is WIP. Write is unsupported!
Mapping NVIDIA MCP6x SPI at 0xfec80000, unaligned size 0x544.
Please send the output of "flashrom -V" to flashrom@flashrom.org with
your board name: flashrom -V as the subject to help us finish support for your
chipset. Thanks.
OK.
This chipset supports the following protocols: SPI.
Found chip "Winbond W25x80" (1024 KB, SPI) at physical address 0xfff00000.
Write/erase is not working yet on your programmer in its current configuration.
Aborting.