1Board Description and Memory Maps

0Memory Maps

 

 

 

 

Memory Maps

 

 

 

 

 

 

Table 1-8. MC2 Chip Register Map

 

MC2 Chip Base Address = $FFF42000

 

 

 

 

 

 

 

Offset

D31-D24

D23-D16

D15-D8

D7-D0

 

 

 

 

 

$00

MC2 chip ID

MC2 chip

General

Interrupt Vector

 

 

Revision

Control

Base Register

 

 

 

 

 

$04

 

Tick Timer 1 Compare Register

 

 

 

 

 

$08

 

Tick Timer 1 Counter Register

 

 

 

 

 

$0C

 

Tick Timer 2 Compare Register

 

 

 

 

 

$10

 

Tick Timer 2 Counter Register

 

 

 

 

 

 

$14

LSB Prescaler

Prescaler

Tick Timer 2

Tick Timer 1

 

Count Register

Clock Adjust

Control

Control

 

 

 

 

 

$18

Tick Timer 4

Tick Timer 3

Tick Timer 2

Tick Timer 1

 

Interrupt Control

Interrupt Control

Interrupt Control

Interrupt Control

 

 

 

 

 

$1C

DRAM Parity Error

SCC Interrupt

Tick Timer 4

Tick Timer 3

 

Interrupt Control

Control

Control

Control

 

 

 

 

 

$20

DRAM Space Base Address Register

SRAM Space Base Address Register

 

 

 

 

 

$24

DRAM Space

DRAM/SRAM

SRAM Space

Reserved

 

Size

Options

Size

 

 

 

 

 

 

$28

LANC Error Status

Reserved

LANC Interrupt

LANC Bus Error

 

 

 

Control

Interrupt Control

 

 

 

 

 

$2C

SCSI Error Status

General Purpose

MVME172 Version

SCSI Interrupt

 

 

Inputs

 

Control

 

 

 

 

 

$30

 

Tick Timer 3 Compare Register

 

 

 

 

 

$34

 

Tick Timer 3 Counter Register

 

 

 

 

 

$38

 

Tick Timer 4 Compare Register

 

 

 

 

 

$3C

 

Tick Timer 4 Counter Register

 

 

 

 

 

 

$40

Bus Clock

EPROM Access

Flash Parameter

ABORT Switch

 

 

Time Control

Control

Interrupt Control

 

 

 

 

 

$44

RESET Switch

Watchdog Timer

Access &

Reserved

 

Control

Control

Watchdog Time

 

 

 

 

Base Select

 

 

 

 

 

 

$48

DRAM Control

Reserved

MPU Status

Reserved

 

 

 

 

 

$4C

 

32-bit Prescaler Count Register

 

 

 

 

 

 

1

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Image 45
Motorola MVME172 manual MC2 Chip Register Map, MC2 Chip Base Address = $FFF42000, Offset D31-D24 D23-D16 D15-D8 D7-D0