Hello,
attached are the output of the erase operation for SST39SF020A part. Erase is marked as untested, but it works.

Motherboard: Shuttle AV11V30
Processor: Pentium III
Chipset: Via Apollo Pro 133
Software version: flashrom v0.9.2-r1017 on Linux 2.6.24-27-generic (i686), built with libpci 2.2.4, GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu4), little endian

Greetings.

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