Digital Equipment PRIORIS ZX 5000 MP, User Manual, Page: 155 / 169

Device Mapping
C-2
Memory Map
Address Range (hex) Amount Function
0000_0000–0003_FFFF 256 KB Base server memory (fixed)
0004_0000–0007_FFFF 256 KB Base server memory (fixed)
0008_0000–0009_FFFF 128 KB Base server memory or ISA memory
enabled in Setup
000A_0000–000B_FFFF 128 KB ISA video frame buffer
000C_0000–000E_FFFF 192 KB Expansion board video BIOS (can be
shadowed) AIC-7870 SCSI BIOS (can be
shadowed)
000F_0000–000F_FFFF 64 KB ISA memory, server BIOS (fixed)
0010_0000–00EF_FFFF 14 MB Server memory or unused
00F0_0000–00FF_FFFF 1 MB Server memory or EISA/ISA memory
0100_0000–3FFF_FFFF 1 008 MB Server memory or unused
4000_0000–BFFF_FFFF 1 024 MB EISA memory or I/O slave memory
C000_0000–C1FF_FFFF 32 MB Memory mapped math coprocessor
C200_0000–FEBF_FFFF 944 MB EISA memory or I/O slave memory
FEC0_0000–FEC0_0FFF 4 KB I/O APIC #1
FEC0_1000–FEC0_1FFF 4 KB I/O APIC #2
FEC0_2000–FEC0_2FFF 4 KB I/O APIC #3
FEC0_3000–FEC0_3FFF 4 KB I/O APIC #4
FEC0_4000–FFDF_4FFF 32 752 KB EISA memory or I/O slave memory
FFE0_0000–FFFF_FFFF 32 KB EISA (BIOS/SCU)