Mastodawn

How to boot nvidia nv1 even with a dead vbios:

download nvplay

run it with all tests turned off or future post mode

Put it in autoexec in win9x (there are no rivers anyway)

It works :D

Insert nv1 into computer

FInd PCI device with ID 10de:0009 or 104a:0009

Set PCI command register to 0x07 (MEMORY_ENABLED | IO_ENABLED | BUS_MASTER)

Find 32MB of free memory somewhere in the physical memory map

set PCI BAR0 in config space to your chosen location (make sure to set bit 3 to 1 so it's prefetchable)

MMAP 32MB of MMIO at your chosen location

Write 0x11111111 to (mmio_base+0x200) (NV_PMC_ENABLE) to turn on the GPU subsystems

Turn on interrupts by setting bits 0, 4, 8 and 12 of (mmio_base+0x140) (PMC_INTR_EN_0) to 1

It works :D