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Moved to github for Liber809 Project
author Boisy Pitre <boisy.pitre@nuance.com>
date Tue, 06 Mar 2012 13:49:14 -0600
parents b8c7b7fbf3c9
children
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          IFNE      IDE.D-1
IDE.D    SET       1
********************************************************************
* ide.d - IDE definitions
*
* $Id$
*
* (C) 2004 Boisy G. Pitre - Licensed to Cloud-9
*
* Edt/Rev  YYYY/MM/DD  Modified by
* Comment
* ------------------------------------------------------------------
*          2005/12/11  Boisy G. Pitre
* Moved IDE base addresses and I/O offsets to here.

*
* ATAPI Commands
*
A$READ2        EQU       $A8
A$WRITE2       EQU       $AA
A$READ         EQU       $28
A$WRITE        EQU       $2A
A$STOP         EQU       $1B

*
* ATA Commands
*
S$READ         EQU       $20
S$WRITE        EQU       $30

*
* IDE Registers
*
DataReg        EQU       0                   Data (1st 8 bits, non-latched)
ErrorReg       EQU       1                   Error # when read
Features       EQU       1                   Features when write
SectCnt        EQU       2                   Sector count
SectNum        EQU       3                   Sector #
CylLow         EQU       4                   Low byte of cylinder
CylHigh        EQU       5                   High byte of cylinder
DevHead        EQU       6                   Device/Head
Status         EQU       7                   Status when read
Command        EQU       7                   Command when write
Latch          EQU       8                   Latch (2nd 8 bits of 16 bit word)

BusyBit        EQU       %10000000           BUSY=1 
DrdyBit        EQU       %01000000           drive ready=1 
DscBit         EQU       %00010000           seek finished=1 
DrqBit         EQU       %00001000           data requested=1 
ErrBit         EQU       %00000001           error_reg has it 
RdyTrk         EQU       %01010000           ready & over track 
RdyDrq         EQU       %01011000           ready w/ data 

**** IDE Interface Definitions
               IFNE      IDE
SDAddr         SET       $FF50
               ENDC      

               ENDC