Appendix A

Memory Module Diagrams


Executable Memory Module Format
Relative
 Address

 $00

 $02

$03

$04


$05

$06

$07

$08

$09


$OA

$OB


$OC

$OD


Use
Sync Bytes ($87CD)
 Module Size (bytes)
 Module Name Offset
 Type Language
 Attributes Revision
 Header Parity Check
 Execution Offset
 Permanent Storage Size
 (Additional optional header
 extensions located here)
 Module Body
 object code, constants,
 and so on
 CRC Check Value
Check
 Range

 header
 pa ity

module

C~,C

OS-9 Technical Reference

Device Descriptor Format

Relative

Address

$00


$01

$02


$03

$04


$05

$06

$07

$08

$09


$OA

$OB


$OD

$OE


$OF

$10

$11

$12,$12 +


Use

 Sync Bytes ($87CD)
 Module Size (bytes)
 Offset to Module Name
 $F (Type) $1 (Lang)
 Attributes Revision
 Header Parity Check
 Offset to File Manager
 Name String
 Offset to Device Driver
 Name String
 Mode Byte
 Device Controller
 Absolute Physical Addr.
 (24 bit)
 Initialization Table Size
 (Initialization Table)
 (Name Strings, and so on)
 CRC Check Value
Check
 Range

 header
 parity

Module

C~,C


A-2
 Memory Module Diagrams / Appendix A
INIT Module Format

Relative

Address

$00


$01

$02


$03

$04


$05

$06

$07


$08

$09


$OA

$OB

$OC

$OD

$OE


$OF

$10


$11

$12


$13

 $14-n

 Use

 Sync Bytes ($87CD)
 Module Size (bytes)
 Module Name Offset
 $F (Type) $1 (Lang)
 Attributes Revision
 Header Parity Check
 Forced Limit of Top
 of Free RAM
 #IRQ Polling Table Entries
 #Device Table Entries
 Offset to Startup
 Module Name String
 Offset to Default Mass
 Storage Device Name String
 Offset to Bootstrap
 Module Name String
 Name Strings
 CRC Check Value
Check
 Range

 header
 parity

 A-3