CD32 Memory Map

CD32 Memory Map
This information comes from the CD32 service manual.

Address

Size

Waits

Function

$000000-$1FFFFE

32

Alice

Chip Ram (ROM after reset and before first 8520 access)

$200000-$A7FFFE

16

0

AUTOCONF1G Space

SA80000-SB7FFFE

16

0

ROM (Reserved)

$B80000-$B87FFE

32

0

Akiko Registers

$B88000-$BFFFFE

16

0

Reserved

$B90000-SB9FFFF

16

Alice

Amiga chip registers

$BAOOOO-$BDFFFE

16

0

Reserved

$BEOOOO-$BEFFFE

16

0

Reserved

$BFOOOO-$BFCFFE

16

8520

Illegal 8520 access/unsupported

$BFDrOO

16

8520

8520A legal decode for 8520 A register r

$BFDr02-SBFDrFC

16

8520

Illegal space that may or may not hit 8520A

SBFDrFE

16

8520

8520A legal decode for 8520 A register r

SBFErOO

16

8520

8520B legal decode for 8520 B register r

$BFEr02.SBFDrFC

16

8520

Illegal space that may or may not hit 8520B

SBFErFE

16

8520

8520B legal decode for 8520 B register r

$BFFOOO-$BFFFFE

16

8520

Illegal 8520 access/unsupported

$COOOOO-$CFFFFE

16

Alice

Illegal (Hits RGAs lor compatibility with old ROMs)

SDOOOOO-SDEFFFE

16

0

Reserved

$DFOOOO-SDFFFFE

16

Alice

RGA The one true location for Amiga chips

$EOOOOO-SE7FFFF

16

0

ROM

$E80000-$F7FFFE

16

0

Reserved

$F80000-$FFFFFE

16

0

ROM

Updated 08 July 2017