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
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View Ref-FileIDE ControllerLocation(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
'----------------- STTypeROM 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:
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒
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:
▒
▒
▒
▒
▒
▒
▒
▒
▒
0x00F0001A - N/A ▒ I/O Unused
0x00F0001D ▒
▒
▒
0x00F0001E OB ▒ I/O Status Register (on read) as follows:
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒
▒ 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 ▒▒▒▒▒▒
▒▒▒▒▒▒