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== Overview ==
== Overview ==
These are the device numbers of the "peripherals" connected to [[IOP/Deckard|IOP]].
 
=== DEV1 ===
=== DEV1 ===
The DVD player ROM (on SCPH-18000 and later). This is often physically a part of the same IC as the boot-ROM (DEV2).


=== DEV2 ===
=== DEV2 ===
The boot-ROM.


=== DEV3 ===
=== DEV3 ===
USB


=== DEV4 ===
=== DEV4 ===
[[SPU2]]


=== DEV5 ===
=== DEV5 ===
[[MechaCon]]


=== DEV6 ===
=== DEV6 ===
???


=== DEV7 ===
=== DEV7 ===
???


=== DEV8 ===
=== DEV8 ===
Originally, the parallel port of the PS1. on the PS2 it is unused on retail models, but even the DECKARD emulator still has code for handling DEV8. [https://israpps.github.io/PPC-Monitor/docs/IOP_devquirck/Dev8_Exp2.html seems to be recycled for PowerPC UART]. On DTL-T models, the DRP interface (for debugging with DECI2) is connected.


=== DEV9 ===
=== DEV9 ===
[[DEV9C]], also known as SSBUS controller or HDD controller in official documentation. Typically connects to ([[SPEED]]).
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