Bill,

The protocol you have is the NEC protocol. If you'd like to understand what was done above a bit more, download the Pronto Hex IR Format document from the Pronto User Documentation Files section by Barry Gordon

From this code:

900A 0068 0000 0001 20DF 1EE1

The device id is 0x20 or 32 decimal. The function is 0x1E or 30 decimal.

Here's the contents to use for a Makehex .IRP file to gen all 256 codes, including the modified doubling of the repeat IR sequence in bold below.

Device=32
Function=0..255

Protocol=NEC
Frequency=38000
Time Base=564
One=1,-3
Zero=1,-1
Prefix=16,-8
Suffix=1,-78
R-Prefix=16,-4
R-Suffix=1,-174
Form=*,D:8,~D:8,F:8,~F:8,_;*,_,*,_