Differences

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--- av:dreamcastav [2015/07/15 11:54] – Added that H-Sync and V-Sync are still active in 15kHz mode, and disabled in TV mode Link83
+++ av:dreamcastav [2019/07/28 00:15] – [Mode Selection Signals Chart] Link83
@@ Line 34: / Line 34: @@
 |  6  | Mode Select 1  | Unused | Unused | Grounded |
 |  7  | Mode Select 2  | Unused | Grounded | Grounded |
-|  8  | Vertical Sync  | Disabled | V-Sync | V-Sync |
+|  8  | Vertical Sync  | VSYNC? | VSYNC | VSYNC |
-|  9  | Horizontal Sync  | Disabled | H-Sync | H-Sync |
+|  9  | Horizontal Sync  | HSYNC? | HSYNC | HSYNC |
-| 10  | Composite Sync| ? | C-Sync | Disabled |
+| 10  | Composite Sync| ? | CSYNC | Disabled |
 | 11  | S-Video Chroma (C)| S-Video Chroma | ? | Disabled |
 | 12  | S-Video Luma (Y)| S-Video Luma | ? | Disabled |
@@ Line 43: / Line 43: @@
 | 15  | Green  | Disabled | Green | Green |
 | 16  | Red  | Disabled | Red | Red |
+Note:- According to the [[schematics:console_related_schematics#dreamcast|schematics]] the HSYNC and VSYNC signals come directly from the 'HOLLY' GPU and are sent to both the DAC/Encoder and the AV port, which means they are likely active in all modes (Even standard 'TV' mode, when no RGB signals are present) However CSYNC is generated by the DAC/Encoder, so is unfortunately only active in specific modes.
 ==== Other ====