Flashrom with a TNT2 M64
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The Riva TNT2 M64 seems to be supported by flashrom as a chip flasher (NVIDIA RIVA TNT2 Model 64/Model 64 Pro - 10de:002d - OK).
The bus type supported by this card seems to be parallel:
zoobab@buzek /home/zoobab/old/zoobab/soft/flashrom-svn/flashrom [18]$ grep CHIP_BUSTYPE_PARALLEL -R gfxnvidia.c
buses_supported = CHIP_BUSTYPE_PARALLEL;