Motorola manual Series MVME172 Local Bus Memory Map, Devices Port Software Address Range

Models: MVME172

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Board Description and Memory Maps

Table 1-4. 400/500-Series MVME172 Local Bus Memory Map

 

Devices

Port

 

Software

 

Address Range

Size

Cache

Note(s)

Accessed

Width

 

 

Inhibit

 

 

 

 

 

 

 

 

 

 

 

 

Programmable

DRAM on board

D32

4MB-16 MB

N

2

 

 

 

 

 

 

Programmable

SRAM

D32

128KB-2MB

N

2

 

 

 

 

 

 

Programmable

VMEbus

D32/D16

--

?

4

 

A32/A24

 

 

 

 

 

 

 

 

 

 

Programmable

IP_a Memory

D32-D8

64KB-8MB

?

2, 4

 

 

 

 

 

 

Programmable

IP_b Memory

D32-D8

64KB-8MB

?

2, 4

 

 

 

 

 

 

Programmable

IP_c Memory

D32-D8

64KB-8MB

?

2, 4

 

 

 

 

 

 

Programmable

IP_d Memory

D32-D8

64KB-8MB

?

2, 4

 

 

 

 

 

 

$FF800000 - $FF9FFFFF

Flash/PROM

D32

2MB

N

1, 5

 

 

 

 

 

 

$FFA00000 - $FFBFFFFF

PROM/Flash

D32

2MB

N

6

 

 

 

 

 

 

$FFC00000 - $FFCFFFFF

Not decoded

--

1MB

N

7

 

 

 

 

 

 

$FFD00000 - $FFDFFFFF

Not decoded

--

1MB

N

7

 

 

 

 

 

 

$FFE00000 - $FFE7FFFF

SRAM default

D32

512KB

N

--

 

 

 

 

 

 

$FFE80000 - $FFEFFFFF

Not decoded

--

512KB

N

7

 

 

 

 

 

 

$FFF00000 - $FFFEFFFF

Local I/O

D32-D8

878KB

Y

3

 

 

 

 

 

 

$FFFF0000 - $FFFFFFFF

VMEbus A16

D32/D16

64KB

?

2, 4

 

 

 

 

 

 

Notes 1. Reset enables the decoder for this space of the memory map so that it will decode address spaces $FF800000-$FF9FFFFF and $00000000-$003FFFFF. The decode at 0 must be disabled in the MC2 chip before DRAM is enabled. DRAM is enabled with the DRAM Control

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Motorola manual Series MVME172 Local Bus Memory Map, Devices Port Software Address Range, Cache Accessed Width Inhibit