IPDS J3 - Internal Floppy Signal IDC GND 1 NC 2 GND 3 HDL/ 4 KEY 5 DS3/ 6 GND 7 INDEX/ 8 GND 9 DS0/ 10 GND 11 DS1/ 12 GND 13 DS2/ 14 GND 15 MOTOR ON/ 16 GND 17 DIRC/ 18 GND 19 STEP/ 20 GND 21 WDATA/ 22 GND 23 WG/ 24 GND 25 TRK0/ 26 GND 27 WPRT/ 28 GND 29 RDATA 30 GND 31 SIDE1/ 32 GND 33 NC 34

Floppy Functions GND Reserved GND Reserved GND Drive Select 3 GND Index GND Drive Select 0 GND Drive Select 1 GND Drive Select 2 GND Motor On GND Direction Select GND Step GND Write Data GND Write Gate GND Track 00 GND Write Protect GND Read Data GND Side 1 Select GND Diskette Change