3B0 - 3BB Cirrus Logic Video Controller
3BC - 3BE LPT3 and High Speed Parallel Port Registers
3BF LPT1 High Speed Parallel Port Registers
3C0 - 3CD Cirrus Logic Video Controller
3D0 - 3DF Cirrus Logic Video Controller
3F0 - 3F7 Diskette Drive Controller Primary Registers
3F8 - 3FF COM1 Serial Controller Registers
400 - 4CF Unused
480 - 48F Extended DMS Registers
4D0 - CF6 Unused
CF7 Configuration/NVM Data Register
CF8 - CFB PCI Configuration Index Register
CFC - CFF PCI Configuration Data Register
D00 - FFF Unused
===========================================================================
System Memory Map
Table 7-12
===========================================================================
Size Memory Address System Function
===========================================================================
640 K 00000000 - 0009FFFF Base Memory
128 K 000A0000 - 000BFFFF Video Memory
48 K 000C0000 - 000CBFFF Video BIOS
160 K 000C8000 - 000E7FFF Unused
64 K 000E8000 - 000FFFFF System BIOS
15 M 00100000 - 00FFFFFF Extended Memory
58 M 01000000 - 047FFFFF Super Extended Memory
58 M 04800000 - 07FFFFFF Unused
2 M 08000000 - 080FFFFF Video Memory (Direct Access)
4 G 08200000 - FFFEFFFF Unused
64 K FFFF0000 - FFFFFFFF System BIOS ("SHADOW")
===========================================================================
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