Hi there! First post, let me start with a big thanks to everyone involved in GroovyMAME, crt_emu driver etc, especially Calamity. Due to this forum and reading through a lot of threads and tutorials, I’m now running a B&O mx7000 crt with a PC (intel g3258 overclocked)setup through an UMSA. Mainly I’m using the emu driver in combination with retro arch super resolutions and so far it is working very well.
I’m trying to learn a lot about how crt works, and now I’m struggling to understand how to effectively Center my screen without manually editing modes in arcadeosd. What I’ve learned so far is:
- adjust h front and h back porch and always add same amount to both (or use h center)
- always test using different resolution than desktop resolution due to read only issue
- most accurate for calibrating is to use highest super resolutions
- the modes will be generated using the modelines as ‘instructions’
- change crt_range to add the adjustments through all generated resolutions
Please correct me if I’m mistaken!
And the last point is where I’m struggling; when I calibrate the horizontal Center correctly on let’s say 2560x240@60p, and copy the horizontal porch values from the mode line into the monitors.ini(replacing), will that work? I saw that those values are different on each separate resolution, so how will vmm generate the right amount of adjustments on all other resolutions? How does the crt_range work?
Sorry if it’s already written down somewhere, I tried to read through but could not find a good explanation thus far.
Thanks!
Arnie
Info:
Currently using NTSC/60/525 monitor preset due to weird wavey toplines on Arcade 15.
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