W83C553FY-G Nuvoton Technology Corporation of America, W83C553FY-G Datasheet - Page 57

• Manufacturer Part Number: W83C553FY-G
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83C553FY-G

• Lead Free Status / RoHS Status: Compliant

W83C553F
ISA ROM Address Decode Enable Register (default = 00h)
Function:
Type:
Bit Description:
WINBOND SYSTEMS LABORATORY
Bit 7:
Bit 6:
Bit 5:
Bit 4:
Bit 3:
Bit 2:
Bit 1:
Bit 0:
When a bit is set to "1", memory accesses to the corresponding address range in the add-on BIOS area
are forward to the PCI bus.
Read/Write
MBEDC. Memory Block Enable; 880-896 KByte. (DC000-DFFFFh).
MBED8. Memory Block Enable; 864-880 KByte. (D8000-CBFFFh).
MBED4. Memory Block Enable; 848-864 KByte. (D4000-C7FFFh).
MBED0. Memory Block Enable; 832-848 KByte. (D0000-C3FFFh).
MBECC. Memory Block Enable; 816-832 KByte. (CC000-CFFFFh).
MBEC8. Memory Block Enable; 800-816 KByte. (C8000-CBFFFh).
MBEC4. Memory Block Enable; 784-800 KByte. (C4000-C7FFFh).
MBEC0. Memory Block Enable; 768-784 KByte. (C0000-C3FFFh).
Electrical Specifications
64