Mercurial > hg > Members > kono > nitros9-code

comparison defs/ide.d @ 2590:17d43fd29ee2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Integration of SuperDriver
author boisy
date Thu, 22 Dec 2011 18:23:47 +0000
parents
children b8c7b7fbf3c9
comparison
equal deleted inserted replaced
2589:e134044fd755 2590:17d43fd29ee2
1 ********************************************************************
2 * ide.d - IDE definitions
3 *
4 * $Id$
5 *
6 * (C) 2004 Boisy G. Pitre - Licensed to Cloud-9
7 *
8 * Edt/Rev YYYY/MM/DD Modified by
9 * Comment
10 * ------------------------------------------------------------------
11 * 2005/12/11 Boisy G. Pitre
12 * Moved IDE base addresses and I/O offsets to here.
13
14 *
15 * ATAPI Commands
16 *
17 A$READ2 EQU $A8
18 A$WRITE2 EQU $AA
19 A$READ EQU $28
20 A$WRITE EQU $2A
21 A$STOP EQU $1B
22
23 *
24 * ATA Commands
25 *
26 S$READ EQU $20
27 S$WRITE EQU $30
28
29 *
30 * IDE Registers
31 *
32 DataReg EQU 0 Data (1st 8 bits, non-latched)
33 ErrorReg EQU 1 Error # when read
34 Features EQU 1 Features when write
35 SectCnt EQU 2 Sector count
36 SectNum EQU 3 Sector #
37 CylLow EQU 4 Low byte of cylinder
38 CylHigh EQU 5 High byte of cylinder
39 DevHead EQU 6 Device/Head
40 Status EQU 7 Status when read
41 Command EQU 7 Command when write
42 Latch EQU 8 Latch (2nd 8 bits of 16 bit word)
43
44 BusyBit EQU %10000000 BUSY=1
45 DrdyBit EQU %01000000 drive ready=1
46 DscBit EQU %00010000 seek finished=1
47 DrqBit EQU %00001000 data requested=1
48 ErrBit EQU %00000001 error_reg has it
49 RdyTrk EQU %01010000 ready & over track
50 RdyDrq EQU %01011000 ready w/ data
51
52 **** IDE Interface Definitions
53 IFNE IDE
54 SDAddr SET $FF50
55 ENDC