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AMD Geode™ SC2200 Processor Data Book 197
Core Logic Module - Register Summary
32580B
487h R/W DMA Channel 0 High Page Register Page 310
489h R/W DMA Channel 6 High Page Register Page 310
48Ah R/W DMA Channel 7 High Page Register Page 310
48Bh R/W DMA Channel 5 High Page Register Page 310
Programmable Interval Timer Registers (Table 6-45)
040h W PIT Timer 0 Counter Page 311
R PIT Timer 0 Status Page 311
041h W PIT Timer 1 Counter (Refresh) Page 311
R PIT Timer 1 Status (Refresh) Page 311
042h W PIT Timer 2 Counter (Speaker) Page 312
R PIT Timer 2 Status (Speaker) Page 312
043h R/W PIT Mode Control Word Register Page 312
Read Status Command
Counter Latch Command
Programmable Interrupt Controller Registers (Table 6-46)
020h / 0A0h WO Master / Slave PCI ICW1 Page 313
021h / 0A1h WO Master / Slave PIC ICW2 Page 313
021h / 0A1h WO Master / Slave PIC ICW3 Page 313
021h / 0A1h WO Master / Slave PIC ICW4 Page 313
021h / 0A1h R/W Master / Slave PIC OCW1 Page 313
020h / 0A0h WO Master / Slave PIC OCW2 Page 314
020h / 0A0h WO Master / Slave PIC OCW3 Page 314
020h / 0A0h RO Master / Slave PIC Interrupt Request and Service Registers for OCW3 Commands Page 314
Keyboard Controller Registers (Table 6-47)
060h R/W External Keyboard Controller Data Register Page 316
061h R/W Port B Control Register Page 316
062h R/W External Keyboard Controller Mailbox Register Page 316
064h R/W External Keyboard Controller Command Register Page 316
066h R/W External Keyboard Controller Mailbox Register Page 316
092h R/W Port A Control Register Page 316
Real-Time Clock Registers (Table 6-48)
070h WO RTC Address Register Page 317
071h R/W RTC Data Register Page 317
072h WO RTC Extended Address Register Page 317
073h R/W RTC Extended Data Register Page 317
Miscellaneous Registers (Table 6-49)
0F0h, 0F1h WO Coprocessor Error Register Page 317
170h-177h/
376h-377h
R/W Secondary IDE Registers Page 317
1F0-1F7h/
3F6h-3F7h
R/W Primary IDE Registers Page 317
4D0h R/W Interrupt Edge/Level Select Register 1 Page 317
4D1h R/W Interrupt Edge/Level Select Register 2 Page 318
Table 6-28. ISA Legacy I/O Register Summary (Continued)
I/O Port Type Name Reference