Video Signals And Timing: Difference between revisions

→‎Hardware properties: Stripped todo's and filled in some more sensible information
[unchecked revision][unchecked revision]
(Added last variable to the reference)
(→‎Hardware properties: Stripped todo's and filled in some more sensible information)
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{{Anchor|C_PRIME}}
''' C_PRIME '''
:Defaults to 40, the actual value can be computed from EDID data.
:'''Todo''' Equals 40
 
{{Anchor|M_PRIME}}
''' M_PRIME '''
:Defaults to 600, the actual value can be computed from EDID data.
:'''Todo''' Equals 600
 
{{Anchor|CELL_GRAN_RND}}
'''CELL_GRAN_RND'''
:Cell granularity - the amount of pixels the timings should be aligned to. For example, a VGA uses horizontal timings in multiples of the character clock, each character being 8 (graphics and some text modes) or 9 (most text modes) pixels wide. For a VGA graphics mode, you'll want to supply 8 here because of that. Depending on your specific hardware, youthe supplycommon values are either 8 or 1.
 
{{Anchor|MIN_PORCH_RND}}
'''MIN_PORCH_RND'''
:'''Todo''' EqualsUsually 1. UsedProbably used to force at least one unit of blanking around the sync period in order to not confuse graphics hardware? that can not handle an absence of blanking around the synchronisation pulse.
 
{{Anchor|MIN_V_SYNC_AND_BACK_PORCH}}
'''MIN_V_SYNC_AND_BACK_PORCH'''
:The time in microseconds the monitor needs to detect the vertical synchronisation signal and subsequently retrace to the top-left corner of the screen. Defaults to 550.
:'''Todo''' Equals 550
 
{{Anchor|V_SYNC_RND}}
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'''H_SYNC_PERCENT'''
: The percentage of a scanline that should have the synchronisation pulse active. Equals 8%
 
 
=== Video mode inputs ===
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edits