SLOTS

 

ISA                    VESA Local Bus                    AGP

 

 

ISA slot

 
A1 I/O CHECK
A2 DATA BIT 7
A3 DATA BIT 6
A4 DATA BIT 5
A5 DATA BIT 4
A6 DATA BIT 3
A7 DATA BIT 2
A8 DATA BIT 1
A9 DATA BIT 0
A10 I/O CHANNEL READY
A11 ADDRESS ENABLE
A12 ADDRESS BIT 19
A13 ADDRESS BIT 18
A14 ADDRESS BIT 17
A15 ADDRESS BIT 16
A16 ADDRESS BIT 15
A17 ADDRESS BIT 14
A18 ADDRESS BIT 13
A19 ADDRESS BIT 12
A20 ADDRESS BIT 11
A21 ADDRESS BIT 10
A22 ADDRESS BIT 9
A23 ADDRESS BIT 8
A24 ADDRESS BIT 7
A25 ADDRESS BIT 6
A26 ADDRESS BIT 5
A27 ADDRESS BIT 4
A28 ADDRESS BIT 3
A29 ADDRESS BIT 2
A30 ADDRESS BIT 1
A31 ADDRESS BIT 0
B1 GROUND
B2 ACTIVE TO RESET OR INITIALIZE SYSTEM LOGIC
B3 +5 VDC
B4 IRQ2
B5 -5 VDC
B6 DMA2
B7 -12 VDC
B8 NO WAIT STATE
B9 +12 VDC
B10 GROUND
B11 SYSTEM MEMORY WRITE
B12 SYSTEM MEMORY READ
B13 I/O WRITE
B14 I/O READ
B15 DMA ACKNOWLEDGE 3
B16 DMA REQUEST 3
B17 DMA ACKNOWLEDGE1
B18 DMA REQUEST 1
B19 REFRESH
B20 SYSTEM CLOCK
B21 IRQ7
B22 IRQ6
B23 IRQ5
B24 IRQ4
B25 IRQ3
B26 IRQ2
B27 TERMINAL COUNT
B28 ADDRESS LATCH ENABLE
B29 +5 VDC
B30 HIGH-SPEED CLOCK
B31 GROUND
C1 SYSTEM BUS HIGH ENABLE
C2 ADDRESS BIT 23
C3 ADDRESS BIT 22
C4 ADDRESS BIT 21
C5 ADDRESS BIT 20
C6 ADDRESS BIT 19
C7 ADDRESS BIT 18
C8 ADDRESS BIT 17
C9 MEMORY READ
C10 MEMORY WRITE
C11 DATA BIT 8
C12 DATA BIT 9
C13 DATA BIT 10
C14 DATA BIT 11
C15 DATA BIT 12
C16 DATA BIT 13
C17 DATA BIT 14
C18 DATA BIT 15
D1 MEMORY 16BIT SELECT
D2 I/O 16BIT SELECT
D3 IRQ 10
D4 IRQ 11
D5 IRQ 12
D6 IRQ 15
D7 IQR 14
D8 DMA ACKNOWLEDGE 0
D9 DMA REQUEST 0
D10 DMA ACKNOWLEDGE 5
D11 DMA REQUEST 5
D12 DMA ACKNOWLEDGE 6
D13 DMA REQUEST 6
D14 DMA ACKNOWLEDGE 7
D15 DMA REQUEST 7
D16 5VDC
D17 DRQ GAIN CONTROL
D18 GROUND

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VESA Local Bus Slot
A1 DATA01 B1 DATA00  
A2 DATA03 B2 DATA02  
A3 GND B3 DATA04  
A4 DATA05 B4 DATA06  
A5 DATA07 B5 DATA08  
A6 DATA09 B6 GND  
A7 DATA11 B7 DATA10  
A8 DATA13 B8 DATA12  
A9 DATA15 B9 VCC  
A10 GND B10 DATA14  
A11 DATA17 B11 DATA16  
A12 VCC B12 DATA18  
A13 DATA19 B13 DATA20  
A14 DATA21 B14 GND  
A15 DATA23 B15 DATA22  
A16 DATA25 B16 DATA24  
A17 GND B17 DATA26  
A18 DATA27 B18 DATA28  
A19 DATA29 B19 DATA30  
A20 DATA31 B20 VCC  
A21 ADDRESS30 B21 ADDRESS31
A22 ADDRESS28 B22 GND  
A23 ADDRESS26 B23 ADDRESS29
A24 GND B24 ADDRESS27
A25 ADDRESS24 B25 ADDRESS25
A26 ADDRESS22 B26 ADDRESS23
A27 VCC B27 ADDRESS21
A28 ADDRESS20 B28 ADDRESS19
A29 ADDRESS18 B29 GND  
A30 ADDRESS16 B30 ADDRESS17
A31 ADDRESS14 B31 ADDRESS15
A32 ADDRESS12 B32 VCC  
A33 ADDRESS10 B33 ADDRESS13
A34 ADDRESS08 B34 ADDRESS11
A35 GND B35 ADDRESS09
A36 ADDRESS06 B36 ADDRESS07
A37 ADDRESS04 B37 ADDRESS05
A38 WRITE BACK B38 GND  
A39 BYTE ENABLE0 B39 ADDRESS03
A40 VCC B40 ADDRESS02
A41 BYTE ENABLE1 B41 N/C  
A42 BYTE ENABLE2 B42 RESET  
A43 GND B43 DATA COMMAND
A44 BYTE ENABLE3 B44 MEMORY I/O
A45 ADDRESS STROBE B45 WRITE/READ
       
A48 LOCAL READY B48 READY RETURN
A49 LOCAL DEVICE B49 GND  
A50 LOCAL REQUEST B50 IRQ9  
A51 GND B51 BURST READY
A52 LOCAL GRANT B52 BURST LAST
A53 VCC B53 IDENTIFICATION0
A54 IDENTIFICATION2 B54 IDENTIFICATION1
A55 IDENTIFICATION3 B55 GND  
A56 IDENTIFICATION4 B56 LOCAL CLOCK
A57 LKEN B57 VCC  
       
A58 LOCAL ENABLE ACCESS STROBE B58 LOCAL BUS SIZE 16

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AGP Slot
A1 +12 V dc B1 SPARE A34 VDDQ 3.3 B34 VDDQ 3.3
A2 SPARE B2 +5 V dc A35 AD22 B35 AD21
A3 RESERVED B3 +5 V dc A36 AD20 B36 AD19
A4 USB- B4 USB+ A37 GROUND B37 GROUND
A5 GROUND B5 GROUND A38 AD18 B38 AD17
A6 INTA# B6 INTB# A39 AD16 B39 C/BE2#
A7 RST# B7 CLK A40 VDDQ 3.3 B40 VDDQ 3.3
A8 GNT# B8 REQ# A41 FRAME# B41 IRDY#
A9 VCC 3.3 B9 VCC 3.3 A42 SPARE B42 SPARE
A10 ST1 B10 ST0 A43 GROUND B43 GROUND
A11 RESERVED B11 ST2 A44 SPARE B44 SPARE
A12 PIPE# B12 RBF# A45 VCC 3.3 B45 VCC 3.3
A13 GROUND B13 GROUND A46 TRDY# B46 DEVSEL#
A14 SPARE B14 SPARE A47 STOP# B47 VDDQ 3.3
A15 SBA1 B15 SBA0 A48 SPARE B48 PERR#
A16 VCC 3.3 B16 VCC 3.3 A49 GROUND B49 GROUND
A17 SBA3 B17 SBA2 A50 PAR B50 SERR#
A18 RESERVED B18 SB_STB A51 AD15 B51 C/BE1#
A19 GROUND B19 GROUND A52 VDDQ 3.3 B52 VDDQ 3.3
A20 SBA5 B20 SBA4 A53 AD13 B53 AD14
A21 SBA7 B21 SBA6 A54 AD11 B54 AD12
A22 KEY B22 KEY A55 GROUND B55 GROUND
A23 KEY B23 KEY A56 AD9 B56 AD10
A24 KEY B24 KEY A57 C/BE0# B57 AD8
A25 KEY B25 KEY A58 VDDQ 3.3 B58 VDDQ 3.3
A26 AD30 B26 AD31 A59 RESERVED B59 AD STB0
A27 AD28 B27 AD29 A60 AD6 B60 AD7
A28 VCC 3.3 B28 VCC 3.3 A61 GROUND B61 GROUND
A29 AD26 B29 AD27 A62 AD4 B62 AD5
A30 AD24 B30 AD25 A63 AD2 B63 AD3
A31 GROUND B31 GROUND A64 VDDQ 3.3 B64 VDDQ 3.3
A32 RESERVED B32 AD STB1 A65 AD0 B65 AD1
A33 C/BE3# B33 AD23 A66 SMB1 B66 SMB0

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