82378ZB Datasheet, PDF (29/137 Pages) Intel Corporation – SYSTEM I/O APIC(SIO.A) AND

E
82378ZB (SIO) AND 82379 (SIO.A)
Address
Address
Type
Name
FEDC BA98 7654 3210
0042h 0000 0000 010x 0010 r/w Timer Counter 1 - Counter 2 Count
0043h 0000 0000 010x 0011 wo Timer Counter 1 Command Mode Register
0060h² 0000 0000 0110 0000 ro Reset UBus IRQ12
0061h 0000 0000 0110 0xx1 r/w NMI Status and Control
0070h²
0000 0000 0111 0xx0 wo CMOS RAM Address and NMI Mask
Register
0078− 0000 0000 0111 10xx r/w BIOS Timer
007Bh^3,4,5
0080h¹ 0000 0000 100x 0000 r/w DMA Page Register (Reserved)
0081h 0000 0000 100x 0001 r/w DMA Channel 2 Page Register
0082h 0000 0000 1000 0010 r/w DMA Channel 3 Page Register
0083h 0000 0000 100x 0011 r/w DMA Channel 1 Page Register
0084h¹ 0000 0000 100x 0100 r/w DMA Page Register (Reserved)
0085h¹ 0000 0000 100x 0101 r/w DMA Page Register (Reserved)
0086h¹ 0000 0000 100x 0110 r/w DMA Page Register (Reserved)
0087h 0000 0000 100x 0111 r/w DMA Channel 0 Page Register
0088h¹ 0000 0000 100x 0100 r/w DMA Page Register (Reserved)
0089h 0000 0000 100x 1001 r/w DMA Channel 6 Page Register
008Ah 0000 0000 100x 1010 r/w DMA Channel 7 Page Register
008Bh 0000 0000 100x 1011 r/w DMA Channel 5 Page Register
008Ch¹ 0000 0000 100x 1100 r/w DMA Page Register (Reserved)
008Dh¹ 0000 0000 100x 1101 r/w DMA Page Register (Reserved)
008Eh¹ 0000 0000 100x 1110 r/w DMA Page Register (Reserved)
008Fh 0000 0000 100x 1111 r/w DMA Low Page Register Refresh
0090h⁶ 0000 0000 100x 0000 r/w DMA Page Register (Reserved)
0092h² 0000 0000 1001 0010 r/w System Control Port
0094h⁶ 0000 0000 100x 0100 r/w DMA Page Register (Reserved)
0095h⁶ 0000 0000 100x 0101 r/w DMA Page Register (Reserved)
0096h⁶ 0000 0000 100x 0110 r/w DMA Page Register (Reserved)
0098h⁶ 0000 0000 100x 1000 r/w DMA Page Register (Reserved)
009Ch⁶ 0000 0000 100x 1100 r/w DMA Page Register (Reserved)
Block
TC
TC
Control
Control
Control
TC
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
Control
DMA
DMA
DMA
DMA
DMA
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