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Topic       : The ATARI Compendium
Author      : Scott Sanders / JAY Software
Version     : 1.25 (20/6/2003)
Subject     : Documentation
Nodes       : 1117
Index Size  : 32614
HCP-Version : 6
Compiled on : Atari
@charset    : UTF-8
@lang       : en
@default    : 
@help       : %About
@options    : +g -i -t4 +y +z
@width      : 100
View Ref-File
                               IDE Controller


Location(s)   SizeBYTE   Occupies one byte (8 bits).
WORD   Occupies one WORD (16 bits).
LONG   Occupies one longword (32 bits).
OW     Occupies the odd WORD of a LONG.
EW     Occupies the even WORD of a LONG.
OB     Occupies the odd BYTE of a WORD.
EB     Occupies the even BYTE of the WORD.
  MchnIf the box is shaded then address is available
for this computer.

        ▒ ▒ ▒ ▒ ▒ ▒
        | | | | | '------- Falcon030
        | | | | '--------- TT030
        | | | '----------- MEGA STe
        | | '------------- STe
        | '--------------- MEGA ST
        '----------------- ST
  TypeROM          Location is Read-Only Memory
RAM          Location is Read-Write Memory
I/O          Location is hardware-mapped
VME          Location addresses VME address space
N/A          Not applicable
RO           Read-only location
WO           Write-only location
RW           Read-write location
RSVD         Reserved
Unassigned   Either not assigned or undocumented
  Meaning                         (see Usage)

0x00F00000    OW        ▒ I/O   Data Register
0x00F00004    OB        ▒ I/O   Error Register as follows:
index=1061
0x00F00006 N/A ▒ Unused 0x00F00008 OB ▒ I/O Sector Count Register 0x00F0000A N/A ▒ I/O Unused 0x00F0000C OB ▒ I/O Sector Number Register 0x00F0000E N/A ▒ I/O Unused 0x00F00010 OB ▒ I/O Cylinder Low Register (this register is ▒ written with the low eight bits of the ten ▒ bit cylinder number) 0x00F00012 N/A ▒ I/O Unused 0x00F00014 OB ▒ I/O Cylinder High Register (this register is ▒ written with the high two bits of the ten ▒ bit cylinder number) 0x00F00016 N/A ▒ I/O Unused 0x00F00018 OB ▒ I/O Drive Head Register as follows:
index=1062
0x00F0001A - N/A ▒ I/O Unused 0x00F0001D ▒ 0x00F0001E OB ▒ I/O Status Register (on read) as follows:
index=1063
▒ Command Register (on write) The IDE ▒ registers must be completely setup prior ▒ to writing the command byte here 0x00F00020 - N/A ▒ I/O Unused 0x00F00036 ▒ 0x00F00038 OB ▒ I/O Alternate Status Register (on read) ▒ Alternate Command Register (on write) ▒▒▒▒▒▒ 0x00F00040 - N/A ▒▒▒▒▒▒ N/A Unassigned 0x00F9FFFF ▒▒▒▒▒▒ ▒▒▒▒▒▒