I attached a JPG that shows the hex codes that are sent by the CD-SR77.
Here it is.

That image tells you the hex codes SENT. To figure out what you want to map them to, use the following, which I stole from some code on the Empeg developer site. These codes correspond to the codes sent by the Kenwood credit card remote.

0               0x0000B900

1               0x0000B901

2               0x0000B902

3               0x0000B903

4               0x0000B904

5               0x0000B905

6               0x0000B906

7               0x0000B907

8               0x0000B908

9               0x0000B909

Track (-)       0x0000B90A

Track (+)       0x0000B90B

AM              0x0000B90C

FM              0x0000B90D

Prog (play)     0x0000B90E

Direct/OK       0x0000B90F

Vol Up          0x0000B914

Vol Dn          0x0000B915

Asterisk        0x0000B91B

Tuner           0x0000B91C

Tape            0x0000B91D

CD              0x0000B91E

CD/MD/CH        0x0000B91F

DNPP            0x0000B95E

So, like, if you wanted to map the "Func" button on the CD-SR77 to cycle Info modes like the CD/MD/CH button on the Kenwood remote, you add the following line to your mapping file:

0x0000AD19:0x0000B91F

Hope this helps.

-Tony
MkII #554