Isn't that the place where some basic settings like serial bit rate, video inversion etc. can be made?

Don't have my DEC 100B right next to me to check, i only remember that mainly periperals were involved.

EDIT: the procedure is described on pages 37 - 52 of the Technical Manual mentioned earlier in this thread

Originally Posted by rfka01
Try pressing F3 at that stage ... that key is equivalent to "SetUp" on a real Rainbow and enters a special mode during normal operation.

Here it shows

[Linked Image from]

Last edited by Bavarese; 05/18/12 09:47 AM.