x68000:dmac
Differences
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x68000:dmac [2017/09/11 10:49] – added CPR, DFC, BFC, and GCR registers neko68k | x68000:dmac [2019/08/27 20:45] (current) – external edit 127.0.0.1 | ||
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Line 192: | Line 192: | ||
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- | CPR< | + | CPR< |
^ 7 ^ 6 ^ 5 ^ 4 ^ 3 ^ 2 ^ 1 ^ 0 ^ | ^ 7 ^ 6 ^ 5 ^ 4 ^ 3 ^ 2 ^ 1 ^ 0 ^ | ||
Line 203: | Line 203: | ||
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- | DFC< | + | DFC< |
Same as MFC. | Same as MFC. | ||
--- | --- | ||
- | BFC< | + | BFC< |
Same as MFC. | Same as MFC. | ||
--- | --- | ||
- | GCR< | + | GCR< |
^ 7 ^ 6 ^ 5 ^ 4 ^ 3 ^ 2 ^ 1 ^ 0 ^ | ^ 7 ^ 6 ^ 5 ^ 4 ^ 3 ^ 2 ^ 1 ^ 0 ^ | ||
Line 222: | Line 222: | ||
| 3~2 |BT - Burst time \\ Number of DMA clock cycles per burst. \\ %00: 16 clocks \\ %01: 32 clocks \\ %10: 64 clocks \\ %11: 129 clocks| | | 3~2 |BT - Burst time \\ Number of DMA clock cycles per burst. \\ %00: 16 clocks \\ %01: 32 clocks \\ %10: 64 clocks \\ %11: 129 clocks| | ||
| 1~0 |BR - Bandwidth threshold (band occupancy) \\ %00: 50% \\ %01: 25% \\ %10: 12.5% \\ %11: 6.25% \\ Note: Only affects channels set to limited speed auto request mode| | | 1~0 |BR - Bandwidth threshold (band occupancy) \\ %00: 50% \\ %01: 25% \\ %10: 12.5% \\ %11: 6.25% \\ Note: Only affects channels set to limited speed auto request mode| | ||
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x68000/dmac.1505090994.txt.gz · Last modified: 2019/08/27 20:44 (external edit)