On 2012-07-05 08:22, Boyanich, Alastair wrote: G'day $ALL. Quick question. I've just snaffled an M8190-AE with what I think is the 21-21853-06 FPU as an upgrade for either the 11/70 or 11/23Plus at home. I've seen reference to CIS microcode for these boards about the place and am extremely keen to have a go at it with macro. I'm not "actually" sure if it has it in the PROMS, but being handy with a EPROM programmer hopefully I can find it. Does anyone have any reading material on how to figure out if the CIS microcode is installed ? This CIS option is not a PROM, even though it might sound like that. It's more like a co-processor. If the CIS options is installed, you can easily see that, physically, by the large chips next to the CPU. If it's not there, you have some empty sockets... Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol