AMD Geode SC1201 User Manual
Page 189
AMD Geode™ SC1200/SC1201 Processor Data Book
189
Core Logic Module - Register Summary
32579B
487h
R/W
DMA Channel 0 High Page Register
489h
R/W
DMA Channel 6 High Page Register
48Ah
R/W
DMA Channel 7 High Page Register
48Bh
R/W
DMA Channel 5 High Page Register
Programmable Interval Timer Registers (Table 6-45)
040h
W
PIT Timer 0 Counter
R
PIT Timer 0 Status
041h
W
PIT Timer 1 Counter (Refresh)
R
PIT Timer 1 Status (Refresh)
042h
W
PIT Timer 2 Counter (Speaker)
R
PIT Timer 2 Status (Speaker)
043h
R/W
PIT Mode Control Word Register
Read Status Command
Counter Latch Command
Programmable Interrupt Controller Registers (Table 6-46)
020h / 0A0h
WO
Master / Slave PCI ICW1
021h / 0A1h
WO
Master / Slave PIC ICW2
021h / 0A1h
WO
Master / Slave PIC ICW3
021h / 0A1h
WO
Master / Slave PIC ICW4
021h / 0A1h
R/W
Master / Slave PIC OCW1
020h / 0A0h
WO
Master / Slave PIC OCW2
020h / 0A0h
WO
Master / Slave PIC OCW3
020h / 0A0h
RO
Master / Slave PIC Interrupt Request and Service Registers for OCW3 Commands
Keyboard Controller Registers (Table 6-47)
060h
R/W
External Keyboard Controller Data Register
061h
R/W
Port B Control Register
062h
R/W
External Keyboard Controller Mailbox Register
064h
R/W
External Keyboard Controller Command Register
066h
R/W
External Keyboard Controller Mailbox Register
092h
R/W
Port A Control Register
Real-Time Clock Registers (Table 6-48)
070h
WO
RTC Address Register
071h
R/W
RTC Data Register
072h
WO
RTC Extended Address Register
073h
R/W
RTC Extended Data Register
Miscellaneous Registers (Table 6-49)
0F0h, 0F1h
WO
Coprocessor Error Register
170h-177h/
376h-377h
R/W
Secondary IDE Registers
1F0-1F7h/
3F6h-3F7h
R/W
Primary IDE Registers
4D0h
R/W
Interrupt Edge/Level Select Register 1
4D1h
R/W
Interrupt Edge/Level Select Register 2
Table 6-28. ISA Legacy I/O Register Summary (Continued)
I/O Port
Type
Name
Reference