ISA Local Resource Bus

Seven-Segment Display Register

Note This register is NOT USED on the MVME2300-series boards.

This 16-bit register allows data to be sent to the 4-digit hexadecimal diagnostic display. The register also allows the data to be read back.

REG

 

 

 

 

7-Segment Display Register - Offset $08C0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIT

SD15

SD14

SD13

SD12

 

SD11

SD10

SD9

SD8

SD7

SD6

SD5

SD4

 

SD3

SD2

SD1

SD0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIELD

 

DIG3[3:0]

 

 

 

DIG2[3:0]

 

 

DIG1[3:0]

 

 

 

DIG0[3:0]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPER

 

 

 

 

 

 

 

 

R/W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESET

X

X

X

X

 

X

X

X

X

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIG3[3:0] Hexadecimal value of the most significant digit.

DIG2[3:0] Hexadecimal value of the third significant digit.

DIG1[3:0] Hexadecimal value of the second significant digit.

DIG0[3:0] Hexadecimal value of the least significant digit.

1

VME Registers

The registers listed in the table below provide the following functions for the VMEbus interface:

A software interrupt capability

A location monitor function

A geographical address status

For these registers to be accessible from the VMEbus, the Universe ASIC must be programmed to map VMEbus Slave Image 0 into the appropriate PCI I/O address range. Refer to the VMEbus Slave Map section for additional details.

http://www.motorola.com/computer/literature

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Image 61
Motorola MVME2300 Series manual VME Registers, Seven-Segment Display Register, Segment Display Register Offset $08C0