I have written assembly code for the RISCV FE310 processor, and have all the manuals for the U54 and U74 CPUs. I also have the schematic and layout diagrams for the BeagleV. What I am missing is the manual for the specific VIC7100 chip that is central to the BeagleV. From the schematic it is clear that there is a lot inside the VIC chip beyond two U74 cores and in order to program it at a low level I need to know things like where the device control registers are mapped, which SPI channels go where, etc.
Where can I find this?