user manual

2-26
Board Level Hardware Description
2
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
(repeated)
-- 3.5KB 1,6
$FFF44000 - $FFF44FFF reserved -- 4KB 4
$FFF45000 - $FFF451FF CD2401 (Serial Comm.
Cont.)
D16-D8 512B 1
$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,
TOD Clock)
D32-D8 64KB 1
$FFFD0000 - $FFFDFFFF Reserved -- 64KB 4
$FFFE0007 IACK LEVEL 1 D8 1 byte 2