I can't explain why what you see is different, so the other questions would be--
What OS are you using? (we routinely are running Win7 or XP)
What FTDI driver are you using? (we are now using 2.8.24 -- available from our installer in Windows Driver folder or check http://www.ftdichip.com
for the latest VCP driver)
As you are getting data from the BASICchip, TXD (from chip) to the PC is connected
Maybe you don't have RXD (to chip from PC) connected.
What happens when you type @0
into the Enter window
You should see
00000000: 10000FE0 000000C9 000008B3 000008B7 000008BB 000008BF 000008C3 EFFFC3B0
If you don't see that, then your RXD line is not connected.