Correction to the below thread.

-> Use DEFINE OSC 4 instead of DEFINE OSC 3 <-

I accidently set the Editor Options in MicroCode Studio (View/Editor Options.../Highlighter) to "LowerCase All" instead of "Default". The Define options are CASE SENSITIVE (!!!) so

define osc 3

is ignored and defaults to DEFINE OSC 4

DEFINE OSC 4 sets the OCS value to 4 Mhz (in this case a fudge factor so, when combined with a 32 KHx xtal and the weird serout2 Mode value, it works for 150 baud.

IMHO, there shouldn't be a LowerCase All as an option in CodeStudio as it prohibits you from using DEFINE (uppercase) which is case sensitive! AAARRRRRG