Raven debugger with ARM9 / NS9750

I am told that the Raven (MacGraigor) JTAG debugger can be used with the NS9750 ARM9-based micro, with some “patches”. The ocdserv server (which works with my NS7520 ARM7) does not give me an ARM9 option, only ARM7 and Netarm. The setup I have currently fails to even reset. Any helpful leads? Thanks!