[jan-jaap]

I tried to get the PROM source code released (the sysadmin of sgi.com helped apply some pressure aswell), so that the dual-core R9K/1GHz would become viable (Joe Page had talked to IBM about using a 50% faster 16MB L2), but alas no joy, management said a flat no.

If you go to vetusware.com, and navigate to os -> unix, there's a tarball of IRIX 6.5.7 source and more:

Code:

Source code for SGI IRIX 6.5.7. Contain source code for IP19, IP20, IP21, IP22, IP25, IP26, IP27, IP28, IP30, IP32 PROM, Integrated Diagnostic Environment (IDE) and subset of IRIX source code. No build environment and graphics stacks (X11, IRIS GL, OpenGL, GPU driver) included.

The IP32 PROM code seems to be rev 4.13, which may be from before the RM7000. Then again, to extract RM7000 cache setup routines from a later PROM and merge them back into this one shouldn't be the end of the world.

Happy hacking!