AMD SC1201, SC1200 manual Port Type Name Reference, Programmable Interval Timer Registers Table

Core Logic Module - Register Summary 32579B

Table 6-28. ISA Legacy I/O Register Summary (Continued)

I/O Port	Type	Name	Reference
487h	R/W	DMA Channel 0 High Page Register	Page 301
489h	R/W	DMA Channel 6 High Page Register	Page 301
48Ah	R/W	DMA Channel 7 High Page Register	Page 301
48Bh	R/W	DMA Channel 5 High Page Register	Page 301
Programmable Interval Timer Registers (Table 6-45)
040h	W	PIT Timer 0 Counter	Page 302
	R	PIT Timer 0 Status	Page 302
041h	W	PIT Timer 1 Counter (Refresh)	Page 302
	R	PIT Timer 1 Status (Refresh)	Page 302
042h	W	PIT Timer 2 Counter (Speaker)	Page 303
	R	PIT Timer 2 Status (Speaker)	Page 303
043h	R/W	PIT Mode Control Word Register	Page 303
		Read Status Command
		Counter Latch Command
Programmable Interrupt Controller Registers (Table 6-46)
020h / 0A0h	WO	Master / Slave PCI ICW1	Page 304
021h / 0A1h	WO	Master / Slave PIC ICW2	Page 304
021h / 0A1h	WO	Master / Slave PIC ICW3	Page 304
021h / 0A1h	WO	Master / Slave PIC ICW4	Page 304
021h / 0A1h	R/W	Master / Slave PIC OCW1	Page 304
020h / 0A0h	WO	Master / Slave PIC OCW2	Page 305
020h / 0A0h	WO	Master / Slave PIC OCW3	Page 305
020h / 0A0h	RO	Master / Slave PIC Interrupt Request and Service Registers for OCW3 Commands	Page 305
Keyboard Controller Registers (Table 6-47)
060h	R/W	External Keyboard Controller Data Register	Page 307
061h	R/W	Port B Control Register	Page 307
062h	R/W	External Keyboard Controller Mailbox Register	Page 307
064h	R/W	External Keyboard Controller Command Register	Page 307
066h	R/W	External Keyboard Controller Mailbox Register	Page 307
092h	R/W	Port A Control Register	Page 307
Real-Time Clock Registers (Table 6-48)
070h	WO	RTC Address Register	Page 308
071h	R/W	RTC Data Register	Page 308
072h	WO	RTC Extended Address Register	Page 308
073h	R/W	RTC Extended Data Register	Page 308
Miscellaneous Registers (Table 6-49)
0F0h, 0F1h	WO	Coprocessor Error Register	Page 308
170h-177h/	R/W	Secondary IDE Registers	Page 308
376h-377h
1F0-1F7h/	R/W	Primary IDE Registers	Page 308
3F6h-3F7h
4D0h	R/W	Interrupt Edge/Level Select Register 1	Page 308
4D1h	R/W	Interrupt Edge/Level Select Register 2	Page 309

AMD Geode™ SC1200/SC1201 Processor Data Book 189