Appendix D Pin Assignments 153Table D-15: PCI/ISA slot pin assignments (Pins A and B)Pin Signal Pin SignalA1 IOCHK B1 GNDA2 SD7 B2 RSTA3 SD6 B3 V CCA4 SD5 B4 IRQ9A5 SD4 B5 NCA6 SD3 B6 DRQ2A7 SD2 B7 -12 VA8 SD1 B8 OWSA9 SD0 B9 +12 VA10 IORDY B10 GNDA11 AEN B11 SMWA12 SA19 B12 SMRA13 SA18 B13 IOWA14 SA17 B14 IORA15 SA16 B15 DACK3A16 SA15 B16 DRQ3A17 SA14 B17 DACK1A18 SA13 B18 DRQ1A19 SA12 B19 REFA20 SA11 B20 SCLKA21 SA10 B21 IRQ7A22 SA9 B22 IRQ6A23 SA8 B23 IRQ5A24 SA7 B24 IRQ4A25 SA6 B25 IRQ3A26 SA5 B26 DACK2A27 SA4 B27 TCA28 SA3 B28 ALEA29 SA2 B29 V CCA30 SA1 B30 OSCA31 SA0 B31 GND