GPU/External Registers: Difference between revisions
m Add hexadecimal prefix, and clarify relation meaning |
Clarify border register |
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| Line 200: | Line 200: | ||
| 0x18 | | 0x18 | ||
| HBL | | HBL | ||
| Left border trigger treshold. | | Left border trigger treshold. Enables pushing pixels to the display. | ||
If this value is smaller than the back porch, then the back porch period will be zero, and the border will be immediately displayed upon entering the back porch period. | If this value is smaller than the back porch, then the back porch period will be zero, and the border will be immediately displayed upon entering the back porch period. | ||
| Line 206: | Line 206: | ||
Can be lower than HSync, as the back porch is what takes the controller out of HSync. | Can be lower than HSync, as the back porch is what takes the controller out of HSync. | ||
Must be <= HDisp start (reg 0x60 low u16). | Must be <= HDisp start (reg 0x60 low u16), otherwise no pixels will be pushed due to a glitched state. | ||
|- | |- | ||
| 0x1C | | 0x1C | ||