UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs UPGRADING REPAIRING PCs
64 Chapter 2—System Components and Configuration 8/16-bit ISA Bus Pinouts. 8-bit PC/XT Connector: 16-bit AT Connector: Signal Pin Numbers Signal GROUND B1 A1 -I/O CHK RESET DRV B2 A2 DATA 7 +5 Vdc B3 A3 DATA 6 IRQ 2 B4 A4 DATA 5 -5 Vdc B5 A5 DATA 4 DRQ 2 B6 A6 DATA 3 -12 Vdc B7 A7 DATA 2 -CARD SLCT B8 A8 DATA 1 +12 Vdc B9 A9 DATA 0 GROUND B10 A10 -I/O RDY -SMEMW B11 A11 AEN -SMEMR B12 A12 ADDR 19 -IOW B13 A13 ADDR 18 -IOR B14 A14 ADDR 17 -DACK 3 B15 A15 ADDR 16 DRQ 3 B16 A16 ADDR 15 -DACK 1 B17 A17 ADDR 14 DRQ 1 B18 A18 ADDR 13 -REFRESH B19 A19 ADDR 12 CLK (4.77MHz) B20 A20 ADDR 11 IRQ 7 B21 A21 ADDR 10 IRQ 6 B22 A22 ADDR 9 IRQ 5 B23 A23 ADDR 8 IRQ 4 B24 A24 ADDR 7 IRQ 3 B25 A25 ADDR 6 -DACK 2 B26 A26 ADDR 5 T/C B27 A27 ADDR 4 BALE B28 A28 ADDR 3 +5 Vdc B29 A29 ADDR 2 OSC (14.3MHz) B30 A30 ADDR 1 GROUND B31 A31 ADDR 0 Signal Pin Numbers Signal GROUND B1 A1 -I/O CHK RESET DRV B2 A2 DATA 7 +5 Vdc B3 A3 DATA 6 IRQ 9 B4 A4 DATA 5 -5 Vdc B5 A5 DATA 4 DRQ 2 B6 A6 DATA 3 -12 Vdc B7 A7 DATA 2 -OWS B8 A8 DATA 1 +12 Vdc B9 A9 DATA 0 GROUND B10 A10 -I/O RDY -SMEMW B11 A11 AEN -SMEMR B12 A12 ADDR 19 -IOW B13 A13 ADDR 18 -IOR B14 A14 ADDR 17 -DACK 3 B15 A15 ADDR 16 DRQ 3 B16 A16 ADDR 15 -DACK 1 B17 A17 ADDR 14 DRQ 1 B18 A18 ADDR 13 -REFRESH B19 A19 ADDR 12 CLK (8.33MHz) B20 A20 ADDR 11 IRQ 7 B21 A21 ADDR 10 IRQ 6 B22 A22 ADDR 9 IRQ 5 B23 A23 ADDR 8 IRQ 4 B24 A24 ADDR 7 IRQ 3 B25 A25 ADDR 6 -DACK 2 B26 A26 ADDR 5 T/C B27 A27 ADDR 4 BALE B28 A28 ADDR 3 +5 Vdc B29 A29 ADDR 2 OSC (14.3MHz) B30 A30 ADDR 1 GROUND B31 A31 ADDR 0 -MEM CS16 D1 C1 -SBHE -I/O CS16 D2 C2 LADDR 23 IRQ 10 D3 C3 LADDR 22 IRQ 11 D4 C4 LADDR 21 IRQ 12 D5 C5 LADDR 20 IRQ 15 D6 C6 LADDR 19 IRQ 14 D7 C7 LADDR 18 -DACK 0 D8 C8 LADDR 17 DRQ 0 D9 C9 -MEMR -DACK 5 D10 C10 -MEMW DRQ 5 D11 C11 DATA 8 -DACK 6 D12 C12 DATA 9 DRQ 6 D13 C13 DATA 10 -DACK 7 D14 C14 DATA 11 DRQ 7 D15 C15 DATA 12 +5 Vdc D16 C16 DATA 13 -MASTER D17 C17 DATA 14 GROUND D18 C18 DATA 15 is now obsolete. While most VL-Bus slots were added to an ISA
B F E A 1 2 3 4 5 6 1 2 3 4 5 Expansion Slots 65 slot, the VL-Bus connector could also be added to an EISA slot. Thus, any VL-Bus slot is also an ISA or an ISA/EISA slot (see Figure 2.21). 1 2 3 4 5 1 2 3 4 5 6 7 7 8 9 7 8 9 7 8 9 8 9 10 10 10 10 11 12 11 12 11 12 11 12 13 13 13 13 14 14 14 14 15 16 15 15 15 16 17 18 17 18 17 18 17 18 19 19 19 19 20 20 20 20 21 22 21 22 21 22 21 22 23 23 23 23 24 24 24 24 25 25 26 27 28 29 26 27 28 29 26 27 28 29 26 27 28 29 30 30 30 30 31 31 31 31 1 1 2 1 2 1 3 2 3 2 4 3 4 3 5 4 5 4 5 5 7 6 7 6 8 7 8 7 9 8 9 8 10 9 10 9 11 10 11 10 12 11 12 11 13 12 13 12 14 13 14 13 14 14 16 15 16 15 17 16 17 16 18 17 18 17 19 18 19 18 H D G C Rear of computer
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- Page 33 and 34: Table 1.5 Hexadecimal/ASCII Convers
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- Page 89 and 90: Where BIOS Updates Come From 71 Tab
- Page 91 and 92: How to Recover from a Failed BIOS U
- Page 93 and 94: Note A complete list of PnP device
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- Page 97 and 98: Determining the Motherboard Manufac
- Page 99 and 100: Determining the Motherboard Manufac
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- Page 103 and 104: Phoenix BIOS Beep Codes The followi
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- Page 107 and 108: BIOS Configuration Worksheet 89 BIO
- Page 109 and 110: BIOS Configuration Worksheet 91 Sha
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- Page 117 and 118: Table 4.3 Using LBA Mode Operating
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64<br />
Chapter 2—System Components and Configuration<br />
8/16-bit ISA Bus Pinouts.<br />
8-bit PC/XT Connector: 16-bit AT Connector:<br />
Signal Pin Numbers Signal<br />
GROUND B1 A1 -I/O CHK<br />
RESET DRV B2 A2 DATA 7<br />
+5 Vdc B3 A3 DATA 6<br />
IRQ 2 B4 A4 DATA 5<br />
-5 Vdc B5 A5 DATA 4<br />
DRQ 2 B6 A6 DATA 3<br />
-12 Vdc B7 A7 DATA 2<br />
-CARD SLCT B8 A8 DATA 1<br />
+12 Vdc B9 A9 DATA 0<br />
GROUND B10 A10 -I/O RDY<br />
-SMEMW B11 A11 AEN<br />
-SMEMR B12 A12 ADDR 19<br />
-IOW B13 A13 ADDR 18<br />
-IOR B14 A14 ADDR 17<br />
-DACK 3 B15 A15 ADDR 16<br />
DRQ 3 B16 A16 ADDR 15<br />
-DACK 1 B17 A17 ADDR 14<br />
DRQ 1 B18 A18 ADDR 13<br />
-REFRESH B19 A19 ADDR 12<br />
CLK (4.77MHz) B20 A20 ADDR 11<br />
IRQ 7 B21 A21 ADDR 10<br />
IRQ 6 B22 A22 ADDR 9<br />
IRQ 5 B23 A23 ADDR 8<br />
IRQ 4 B24 A24 ADDR 7<br />
IRQ 3 B25 A25 ADDR 6<br />
-DACK 2 B26 A26 ADDR 5<br />
T/C B27 A27 ADDR 4<br />
BALE B28 A28 ADDR 3<br />
+5 Vdc B29 A29 ADDR 2<br />
OSC (14.3MHz) B30 A30 ADDR 1<br />
GROUND B31 A31 ADDR 0<br />
Signal Pin Numbers Signal<br />
GROUND B1 A1 -I/O CHK<br />
RESET DRV B2 A2 DATA 7<br />
+5 Vdc B3 A3 DATA 6<br />
IRQ 9 B4 A4 DATA 5<br />
-5 Vdc B5 A5 DATA 4<br />
DRQ 2 B6 A6 DATA 3<br />
-12 Vdc B7 A7 DATA 2<br />
-OWS B8 A8 DATA 1<br />
+12 Vdc B9 A9 DATA 0<br />
GROUND B10 A10 -I/O RDY<br />
-SMEMW B11 A11 AEN<br />
-SMEMR B12 A12 ADDR 19<br />
-IOW B13 A13 ADDR 18<br />
-IOR B14 A14 ADDR 17<br />
-DACK 3 B15 A15 ADDR 16<br />
DRQ 3 B16 A16 ADDR 15<br />
-DACK 1 B17 A17 ADDR 14<br />
DRQ 1 B18 A18 ADDR 13<br />
-REFRESH B19 A19 ADDR 12<br />
CLK (8.33MHz) B20 A20 ADDR 11<br />
IRQ 7 B21 A21 ADDR 10<br />
IRQ 6 B22 A22 ADDR 9<br />
IRQ 5 B23 A23 ADDR 8<br />
IRQ 4 B24 A24 ADDR 7<br />
IRQ 3 B25 A25 ADDR 6<br />
-DACK 2 B26 A26 ADDR 5<br />
T/C B27 A27 ADDR 4<br />
BALE B28 A28 ADDR 3<br />
+5 Vdc B29 A29 ADDR 2<br />
OSC (14.3MHz) B30 A30 ADDR 1<br />
GROUND B31 A31 ADDR 0<br />
-MEM CS16 D1 C1 -SBHE<br />
-I/O CS16 D2 C2 LADDR 23<br />
IRQ 10 D3 C3 LADDR 22<br />
IRQ 11 D4 C4 LADDR 21<br />
IRQ 12 D5 C5 LADDR 20<br />
IRQ 15 D6 C6 LADDR 19<br />
IRQ 14 D7 C7 LADDR 18<br />
-DACK 0 D8 C8 LADDR 17<br />
DRQ 0 D9 C9 -MEMR<br />
-DACK 5 D10 C10 -MEMW<br />
DRQ 5 D11 C11 DATA 8<br />
-DACK 6 D12 C12 DATA 9<br />
DRQ 6 D13 C13 DATA 10<br />
-DACK 7 D14 C14 DATA 11<br />
DRQ 7 D15 C15 DATA 12<br />
+5 Vdc D16 C16 DATA 13<br />
-MASTER D17 C17 DATA 14<br />
GROUND D18 C18 DATA 15<br />
is now obsolete. While most VL-Bus slots were added to an ISA
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