Sergey, I'll upload the firmware in the 6 (A1) + 2 (A2) EPROMS today, on ko4bb, I have already dumped them. Unfortunately the firmware is only 3.02 That's another issue I was running into, I tried 5.02 and 5.04 firmware (without Basic) and the analyzer is not working properly; while the basic functionality is still there, the self test reports a problem with A2 (with 100% confidence) and when switching to 801 points, the last 100 points or so are garbled, looks like a RAM overlapping. I should probably pull the RAM chips from the sockets, but then I prefer t have 3.02 with Basic rather than 5.04 without.