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CONNECTOR AND JUMPER PINOUT AND PIN DESCRIPTION

6.1

PC/104 Connector (J1, J2)

The PC/104 bus is essentially identical to the ISA bus except for the physical design. It specifies two pin and

socket connectors for the bus signals. A 64-pin connector, J1, incorporates the 64-pin 8-bit bus connector signals,

and a 40-pin connector, J2, incorporates the 36-pin 16-bit bus connector signals. The additional pins on the

PC/104 connectors are used as ground or key pins. The female sockets on the top of the board enable stacking

another PC/104 board on top of Corona, while the male pins on the bottom enable the board to plug into another

board below it. The PC/104 bus connector pinout and signal functions are defined by the latest version of the

PC/104 Consortium's "PC/104 Specification" (see http://www.pc104.org). In the pinout figures below, the tops

correspond to the left edge of the connector when the board is viewed from the primary side (side with the mini-

PCI connector and the female end of the PC/104 connector) and the board is oriented so that the PC/104

connectors are along the bottom edge of the board.

J2: PC/104 16-bit bus connector

IOCHK-

SD7

SD6

SD5

SD4

SD3

SD2

SD1

SD0

IOCHRDY

AEN

SA19

SA18

SA17

SA16

SA15

SA14

SA13

SA12

SA11

SA10

SA9

SA8

SA7

SA6

SA5

SA4

SA3

SA2

SA1

SA0

Ground

CORONA User Manual Rev A.11

Ground

RESET

+5V

IRQ9

-5V

DRQ2

-12V

OWS-

+12V

A10

B10

KEY

A11

B11

SMEMW-W

A12

B12

SMEMR-

A13

B13

IOW-

A14

B14

IOR-

A15

B15

DACK3-

A16

B16

DRQ3

A17

B17

DACK1-

A18

B18

DRQ1

A19

B19

REFRESH-

A20

B20

SYSCLK

A21

B21

IRQ7

A22

B22

IRQ6

A23

B23

IRQ5

A24

B24

IRQ4

A25

B25

IRQ3

A26

B26

DACK2-

A27

B27

A28

B28

BALE

A29

B29

+5V

A30

B30

OSC

A31

B31

Ground

A32

B32

Ground

www.diamondsystems.com

J1: PC/104 8-bit bus connector

Ground

SBHE-

MEMCS16-

LA23

IOCS16-

LA22

IRQ10

LA21

IRQ11

LA20

IRQ12

LA19

IRQ15

LA18

IRQ14

LA17

DACK0-

MEMR-

DRQ0

C10

D10

MEMW-

DACK5-

C11

D11

SD8

DRQ5

C12

D12

SD9

DACK6-

C13

D13

SD10

DRQ6

C14

D14

SD11

DACK7-

C15

D15

SD12

DRQ7

C16

D16

SD13

+5V

C17

D17

SD14

MASTER-

C18

D18

SD15

Ground

C19

D19

KEY

Ground

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