Memory Map - NEC Versa FXi Series Service And Reference Manual

Memory Map

The system supports system and video shadowing, both controlled through complementary
metal oxide semiconductor (CMOS). The system supports BIOS as a cacheable area with write
protection. The following table shows the system's memory map.
Memory Space
0000 0000h-0009 FFFFh
000A 0000h-000B FFFFh
000C 0000h-000D FFFFh
000E 0000h-000F FFFFh
0010 0000h-09FF FFFFh
000A 0000h-FFEF FFFFh
FFF0 0000h-FFF7 FFFFh
FFF8 0000h-FFF9 FFFFh
FFFA 0000h-FFFB FFFFh
FFFE 0000h-FFFF FFFFh
9-8 Specifications
System Memory Map
Size Function
640K System/Application Memory
128K Video Buffer RAM
128K Available for applications
128K Upper ROM, System and Video
BIOS
up to 160MB Extended Memory
128K Video RAM Frame Buffer
512K 1 MB Extended BIOS
256K New Extended BIOS
128K Lower ROM, Power Management
BIOS
128K System BIOS (alias)