Difference between revisions of "PM Memory"
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(New page: The Pokemon Mini has a 24-bit internal addressing bus. The entire bus is decoded, and thus nothing mirrors except cartridge memory. Externally, the cartridge bus is only 21 bits wide, so...) |
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The Pokemon Mini has a 24-bit internal addressing bus. The entire bus is decoded, and thus nothing mirrors except cartridge memory. Externally, the cartridge bus is only 21 bits wide, so anything at or past $20000 is guaranteed to be a mirror of cartridge memory. | The Pokemon Mini has a 24-bit internal addressing bus. The entire bus is decoded, and thus nothing mirrors except cartridge memory. Externally, the cartridge bus is only 21 bits wide, so anything at or past $20000 is guaranteed to be a mirror of cartridge memory. | ||
− | {| | + | {| border="1" style="text-align:left" |
− | |+Pokemon Mini Memory Map | + | |+'''Pokemon Mini Memory Map''' |
! Start | ! Start | ||
+ | ! End | ||
! Size | ! Size | ||
! Description | ! Description | ||
|- | |- | ||
| $000000 | | $000000 | ||
− | | $001000 | + | | $000FFF |
− | | Internal BIOS | + | | $001000 (4KB) |
+ | | [[PM Bios|Internal BIOS]] | ||
|- | |- | ||
| $001000 | | $001000 | ||
− | | $001000 | + | | $001FFF |
− | | RAM | + | | $001000 (4KB) |
+ | | [[PM RAM]] | ||
|- | |- | ||
| $002000 | | $002000 | ||
− | | $000100 | + | | $0020FF |
− | | Hardware Registers | + | | $000100 (256B) |
+ | | [[PM Registers|Hardware Registers]] | ||
|- | |- | ||
| $002100 | | $002100 | ||
− | | $ | + | | $1FFFFF |
− | | Cartridge Memory | + | | $1FDF00 (~2MB) |
+ | | [[PM Cartridge|Cartridge Memory]] | ||
+ | |- | ||
+ | | $200000 | ||
+ | | $3FFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
+ | |- | ||
+ | | $400000 | ||
+ | | $5FFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
+ | |- | ||
+ | | $600000 | ||
+ | | $7FFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
+ | |- | ||
+ | | $800000 | ||
+ | | $9FFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
+ | |- | ||
+ | | $A00000 | ||
+ | | $BFFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
+ | |- | ||
+ | | $C00000 | ||
+ | | $DFFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
+ | |- | ||
+ | | $E00000 | ||
+ | | $FFFFFF | ||
+ | | $200000 (2MB) | ||
+ | | [[PM Cartridge|Cartridge Memory (Mirror)]] | ||
|} | |} |
Latest revision as of 17:50, 21 May 2008
The Pokemon Mini has a 24-bit internal addressing bus. The entire bus is decoded, and thus nothing mirrors except cartridge memory. Externally, the cartridge bus is only 21 bits wide, so anything at or past $20000 is guaranteed to be a mirror of cartridge memory.
Start | End | Size | Description |
---|---|---|---|
$000000 | $000FFF | $001000 (4KB) | Internal BIOS |
$001000 | $001FFF | $001000 (4KB) | PM RAM |
$002000 | $0020FF | $000100 (256B) | Hardware Registers |
$002100 | $1FFFFF | $1FDF00 (~2MB) | Cartridge Memory |
$200000 | $3FFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |
$400000 | $5FFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |
$600000 | $7FFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |
$800000 | $9FFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |
$A00000 | $BFFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |
$C00000 | $DFFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |
$E00000 | $FFFFFF | $200000 (2MB) | Cartridge Memory (Mirror) |