Documented SPU Channels
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List of channels[edit | edit source]
| Channel Name | Number (hex) | Notes |
|---|---|---|
| SPU Write Outbound Interrupt Mailbox | 0x1E | |
| SPU Read Inbound Mailbox | 0x1D | |
| SPU Write Outbound Mailbox | 0x1C | |
| MFC Read Atomic Command Status | 0x1B | |
| MFC Write List Stall-and-Notify Tag Acknowledgment | 0x1A | |
| MFC Read List Stall-and-Notify Tag Status | 0x19 | |
| MFC Read Tag Group Status | 0x18 | |
| MFC Write Tag Status Update Request | 0x17 | |
| MFC Write Tag Group Query Mask | 0x16 | |
| MFC Command Opcode | 0x15 | lower 16 bits |
| MFC Class ID | 0x15 | upper 16 bits |
| MFC Tag ID | 0x14 | |
| MFC Transfer Size or List Size | 0x13 | |
| MFC Effective Address Low or List Address | 0x12 | |
| MFC Effective Address High | 0x11 | |
| MFC LS Address | 0x10 | |
| SPU Read State Save-and-Restore | 0x0F | |
| SPU Write State Save-and-Restore | 0x0E | |
| SPU Read Machine Status | 0x0D | |
| MFC Read Tag Group Query Mask Channel | 0x0C | |
| SPU Read Event Mask | 0x0B | |
| MFC Write Multisource Synchronization Request | 0x09 | |
| SPU Read Decrementer | 0x08 | |
| SPU Write Decrementer | 0x07 | |
| SPU Signal Notification 2 | 0x04 | |
| SPU Signal Notification 1 | 0x03 | |
| SPU Write Event Acknowledgment | 0x02 | |
| SPU Write Event Mask | 0x01 | |
| SPU Read Event Status | 0x00 |
- The rest of the 64 channels are reserved.
- There is a total of 128 channels (some of them are Documented SPU Channels and some others are Undocumented SPU Channels)
Resources[edit | edit source]
- The MFC is discussed in Section 6 of Cell Broadband Engine Architecture V1.0, while the first 27 DMA channels are listed in the SPU C/C++ Language Extensions V2.0
