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Chapter 4 System Support
Compaq Deskpro 4000N and 4000S Personal Computers
First Edition - September 1997
4-12
4.3.1 ISA CONNECTOR
NOTE: See caution below.
Figure 4–6.
ISA Expansion Connector
Table 4–7.
ISA Expansion Connector Pinout
Table 4-7.
ISA Expansion Connector Pinout
Pin Signal Pin Signal Pin Signal Pin Signal
B01 GND A01 I/O CHK- D01 M16- C01 SBHE-
B02 RESDRV A02 SD7 D02 I/O16- C02 LA23
B03 +5 VDC A03 SD6 D03 IRQ10 C03 LA22
B04 IRQ9 A04 SD5 D04 IRQ11 C04 LA21
B05 -5 VDC A05 SD4 D05 IRQ12 C05 LA20
B06 DRQ2 A06 SD3 D06 IRQ15 C06 LA19
B07 -12 VDC A07 SD2 D07 IRQ14 C07 LA18
B08 NOWS- A08 SD1 D08 DAK0- C08 LA17
B09 +12 VDC A09 SD0 D09 DRQ0 C09 MRDC-
B10 GND A10 BUSRDY D10 DAK5- C10 MWTC-
B11 SMWTC- A11 DMA D11 DRQ5 C11 SD8
B12 SMRDC- A12 SA19 D12 DAK6- C12 SD9
B13 IOWC- A13 SA18 D13 DRQ6 C13 SD10
B14 IORC- A14 SA17 D14 DAK7- C14 SD11
B15 DAK3- A15 SA16 D15 DRQ7 C15 SD12
B16 DRQ3 A16 SA15 D16 +5 VDC C16 SD13
B17 DAK1 A17 SA14 D17 GRAB- C17 SD14
B18 DRQ1 A18 SA13 D18 GND C18 SD15
B19 REFRESH- A19 SA12
B20 BCLK A20 SA11
B21 IRQ7 A21 SA10
B22 IRQ6 A22 SA9
B23 IRQ5 A23 SA8
B24 IRQ4 A24 SA7
B25 IRQ3 A25 SA6
B26 DAK2- A26 SA5
B27 T-C A27 SA4
B28 BALE A28 SA3
B29 +5 VDC A29 SA2
B30 OSC A30 SA1
B31 GND A31 SA0
A1
B1D1
C1
8-Bit ISA Connection
16-Bit ISA Connection
8-Bit ISA Interface
16-Bit ISA Interface
CAUTION:
The maximum length for an
expansion card (PCI or ISA) installed in
this system is 7 inches. Longer cards may
be damaged or cause damage to the
system.