
Appendix A Specifications
209
Pin Signal Pin Signal
21 S21 (+ATN) 55 S55 (-ATN)
22 S22 S22 56 S56
23 S23 (+BSY) 57 S57 (-BSY)
24 S24 (+ACK) 58 S58 (-ACK)
25 S25 (+RST) 59 S59 (-RST)
26 S26 (+MSG) 60 S60 (-MSG)
27 S27 (+SEL) 61 S61 (-SEL)
28 S28 (+C/D) 62 S62 (-C/D)
29 S29 (+REQ) 63 S63(-REQ)
30 S30 (+I/O) 64 S64 (-I/O)
31 S31 (+DB 8) 65 S65 (-DB 8)
32 S32 (+DB 9) 66 S66(-DB 9)
33 S33 (DB 10) 67 S67 (-DB 10)
34 S34 (DB 11) 68 S68 (-DB 11)
IDE
One IDE connection exists inside on the Legacy I/O Board. The cable connects to
both the diskette drive and DVD. If no IDE drives are present, an IDE cable
should not be connected. If only one IDE drive is installed, it must be connected
at the end of the cable.
39
40
1
2
Figure A-8. IDE Connector
Table A-12. IDE Connector Pinout
Pin Signal Pin Signal
1 RSTDRV 21 DRQ
2 GND 22 GND
3 DD7 23 DIOW
4 DD8 24 GND
5 DD6 25 DIOR
6 DD9 26 GND
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