I've been dumb since this morning!!!

Hello, CHRV When I was flaming about the Pentagon, I downloaded his diagram from here http://zx-f.ru/sch/pentagon_128.zip. Today I took a closer look at the diagram and arrangement of the buildings and stopped thinking about something. catch up :o . I had two Pentagon 128s at different times, BUT they didn’t have neither RF2 nor RS-232, but there was AY!!! It turns out that it was not the original (modified, as you like) Pentagon!