CCont register I/O

The CCont has 16 registers, most of them are both readable and writable. Note though, that most of the time, the value you read back is not the same thing you wrote. Reading might give an entirely different thing in both value and meaning. The classic read, alter, write cycle doesn't work in this case so it is strongly recommended to cache the values you write, so you can flip individual bits.

Writing

Parameters: register, writeval

• Start GENSIO transaction [port 0x2D] <- 0x25
• CCont write ready Wait until ([port 0x6D])&3)==3
• Write address [port 0x2C] <- (register << 3)
• Write value [port 0x2C] <- (writeval)

Reading

Parameters: register

Out: readval

• Start GENSIO transaction [port 0x2D] <- 0x25
• CCont write ready Wait until ([port 0x6D]&3)==3
• Write address [port 0x2C] <- (register << 3) | 0x04
• CCont read ready Wait until ([port 0x6D]&4)==4
• Read value readval <- [port 0x6C]

Register descriptions

Are located here.

Last updated: 2005-02-21 14:19

This site is the result of a great deal of assembly code reading, research, countless (mostly futile) searches for data sheets, cross-referencing and analysing. If you use this information in any way please mention wumpus <blacksphere@goliath.darktech.org> (and others in the credits section) in the credits of your program/document. And tell me :) If you have more information please contribute. If you just copy this, stick your name on it and call it yours I hope you get your genitals bitten off by a three headed monkey. Have a nice day.

No mobile phones were harmed in the production of this site.