7 Arcade Game Attract Mode: MiSter FPGA VS Real Arcade CoinOP quick synchronism comparison test

In this video I recorded (with same smartphone 1080p/60fps) 7 videos of 7 real coinop ATTRACT MODE and I ran the related cores on MiSTer FPGA to see the difference in synchronism, hardware fo testing:
- the MiSter was connected in VGA 31khz to an LED TV and the default settings of the original video core refreshes were used
- 7 coinops with original PCB were used, restored by the "Elettoludica" Avezzano Italy museum (obviously with 15 khz CRT RGB output)
Tested Games:
00:00 Shinobi
00:52 Pang
02:14 Ghouls 'N Ghosts
04:29 Teenage Mutant Hero Turtles
06:12 R-Type
08:38 Rastan
11:05 Truxton

[@cardetailingstudioaustria4121]

Nice Video 👍

[@cardetailingstudioaustria4121]

Nice video

[@gennaretro1150]

thank you very much, I had this opportunity to make a comparison between real arcade PCB and Mister FPGA core

[@huddisonretromoderngaming]

It's a very close run thing, which ever way you cut it. Doing the same thing with something like the retropie VS real arcade will also be interesting to see,

[@joseselu5054]

mister misses the clock cycle, even though this is supposed to be one of his strengths.

[@gennaretro1150]

I don't understand why it loses the clock cycle, can you explain it to me? I'm curious 🙂

[@joseselu5054]

@@gennaretro1150 On original arcade boards there is an electronic component called an oscillator. It is the element in charge of controlling the clock cycle of the electronic circuit, to the point that the arcade game can speed up or slow down if this component is devalued. Mister fpga is supposed to be more faithful than software emulation precisely because it perfectly imitates the behavior of these oscillators, but reality shows us that this is not the case. There is still work to be done in this regard, although both in hardware and software emulation the levels of clock cycle precision are already very high (but they are not yet clones).

[@gennaretro1150]

@@joseselu5054 thank you, I know that in electronic boards, as in computers, there are oscillators that are used by the machine also for the generation of the video signal beyond the internal timings .... my aim was just to demonstrate that as much as you appreciate the FPGA compared to the limits of software emulation it is still not perfect

[@joseselu5054]

@@gennaretro1150 It is for all this that I think your video is very valuable, because it shows very well the gap and advance in the clock cycles of the Mister with respect to the original arcade boards.

[@gennaretro1150]

@@joseselu5054 I had the opportunity to visit this museum with over 50 arcade cabinets (almost all with the original pcb) working restored and turned on and the only way to make the comparison is the attract mode because it is always the same except for some variations. But I saw that it wasn't much appreciated on the MiSTer Facebook group 😃