Silicon Graphics Zx10, User Manual

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56 007-4330-002
4: Resources
Memory Map
0C50 – 0C52 General-purpose registers
0C6C – 0C6F ISA control registers
0CD6 – 0CD7 Power management registers
0CF8 – 0CFB PCI configuration address registers (DW access)
0CFC – 0CFF PCI configuration data registers
0F50 – 0F58 General-purpose chip select
Table 4-5 Memory Map
Memory Address Range Description
0 K–640 K 00000000 – 0009FFFF DOS conventional memory
640 K–768 K 000A0000 – 000BFFFF VGA memory and BIOS
768 K–896 K 000C0000 – 000DFFFF Expansion card BIOS and buffer
896 K–1024 K 000E0000 – 000FFFFF System BIOS
1024 K–Top of memory 00100000 – Top of memory Main memory
(4 G–20 M) – (4 G–19 M) FEC00000 – FECFFFFF APIC configuration space
(4 G–18 M) – (4 G–17 M) FEE00000 – FEEFFFFF APIC configuration space
(4 G–4 M) – 4 G FFC00000 – FFFFFFFF High system BIOS
4 G–8 G Maximum allowable memory
Table 4-4 (continued)
I/O Map
I/O Address (hex) Assignment