Glue Logic - Address Mapping

The following is the address mapping of the whole interface chip

Address Range	Device
`00h-1Fh`	IDE
`20h-27h`	LCD
`28h-2Fh`	IR Receiver
`30h-37h`	Keys (read), Reset Generator (write)
`38h-3Fh`	Rotary Encoder

IDE (write operations must always be 16 bits wide)

Address	Read	Write
`00h`	Data (16 bits)	Data (16 bits)
`02h`	Error	Features
`04h`	Sector Count	Sector Count
`06h`	LBA-Low	LBA-Low
`08h`	LBA-Mid	LBA-Mid
`0Ah`	LBA-High	LBA-High
`0Ch`	Device	Device
`0Eh`	Status	Command
`1Ch`	AltStatus	DevControl

LCD

Address	Read	Write
`20h`	Data	Data
`21h`	Status	Command

IR Receiver

Address	Read	Write
`28h`	Data	–

Keys, Reset Generator

Address	Read	Write
`30h`	Keys 7-0	Reset Mask
`31h`	Keys 15-8	–

Rotary Encoder

Address	Read	Write
`38h`	Data (Counter)	–

© 2002-2007, Michael Wurm. – Go back to the description of the glue logic.