2

Board Level Hardware Description

The following table focuses on the Local I/O Devices portion of the local bus Main Memory Map.

Table 2-6. Local I/O Devices Memory Map

Address Range

Devices Accessed

Port Size

Size

Notes

 

 

 

 

 

$FFF00000 - $FFF3FFFF

Reserved

--

256KB

4

 

 

 

 

 

$FFF40000 - $FFF400FF

VMEchip2 (LCSR)

D32

256B

1,3

 

 

 

 

 

$FFF40100 - $FFF401FF

VMEchip2 (GCSR)

D32-D8

256B

1,3

 

 

 

 

 

$FFF40200 - $FFF40FFF

Reserved

--

3.5KB

4,6

 

 

 

 

 

$FFF41000 - $FFF41FFF

Reserved

--

4KB

4

 

 

 

 

 

$FFF42000 - $FFF42FFF

PCCchip2

D32-D8

4KB

1

 

 

 

 

 

$FFF43000 - $FFF430FF

MEMC040/MCECC #1

D8

256B

1

 

 

 

 

 

$FFF43100 - $FFF431FF

MEMC040/MCECC #2

D8

256B

1

 

 

 

 

 

$FFF43200 - $FFF43FFF

MEMC040s/MCECCs

--

3.5KB

1,6

 

(repeated)

 

 

 

 

 

 

 

 

$FFF44000 - $FFF44FFF

reserved

--

4KB

4

 

 

 

 

 

$FFF45000 - $FFF451FF

CD2401 (Serial Comm.

D16-D8

512B

1

 

Cont.)

 

 

 

 

 

 

 

 

$FFF45200 - $FFF45DFF

Reserved

--

3KB

6,8

 

 

 

 

 

$FFF45E00 - $FFF45FFF

Reserved

--

512B

8

 

 

 

 

 

$FFF46000 - $FFF46FFF

82596CA (LAN)

D32

4KB

1,7

 

 

 

 

 

$FFF47000 - $FFF47FFF

53C710 (SCSI)

D32/D8

4KB

1

 

 

 

 

 

$FFF48000 - $FFF4FFFF

Reserved

--

32KB

4

 

 

 

 

 

$FFF50000 - $FFF6FFFF

Reserved

--

128KB

4

 

 

 

 

 

$FFF70000 - $FFF76FFF

Reserved

--

28KB

5

 

 

 

 

 

$FFF77000 - $FFF77FFF

CODE CMMU

D32

4KB

1

 

 

 

 

 

$FFF78000 - $FFF7EFFF

Reserved

--

28KB

5

 

 

 

 

 

$FFF7F000 - $FFF7FFFF

DATA CMMU

D32

4KB

1

 

 

 

 

 

$FFF80000 - $FFF9FFFF

Reserved

--

128KB

5

 

 

 

 

 

$FFFA0000 - $FFFBFFFF

Reserved

--

128KB

4

 

 

 

 

 

$FFFC0000 - $FFFCFFFF

MK48T08 (BBRAM,

D32-D8

64KB

1

 

TOD Clock)

 

 

 

 

 

 

 

 

$FFFD0000 - $FFFDFFFF

Reserved

--

64KB

4

 

 

 

 

 

$FFFE0007

IACK LEVEL 1

D8

1 byte

2

 

 

 

 

 

2-26

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Motorola MVME187 manual Local I/O Devices Memory Map, Address Range Devices Accessed Port Size