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Hi, I have some trouble on a MV2-01 slot (I think mainly from a bad trace, because it came gradually and flex the board could solve the issue before) when I perform the Palette RAM test the result is Adress 400020 actual 0002 ("indirect" D1 stuck high) expected 0000 I'm sure the problem does...

Hello, for those who want use the PC Engine on Peritel/Scart connector (I use it also on my projector with H and V sync so it would be possible that some VGA screen will accept it), I propose a RGB board. The price is 20€ (with 2 adhesive holders), without shipping. image comparison: composite...

Hi, I have a uncommon problem with this function. Quartz 32,768 Khz is ok, 4990 also, I test with another one chip. I swapped also the NEO-F0, the problem is similar. when I access to the RTC screen with Diagnostioc bios there is a random reset which occurs (most quickly with higher frequency...

Hi, I traced remaining pins on the PRO-C0 I'm not able to update the wiki as I didn't got reply to my subscription request, so here the pinout if someone can complete: 2: /PORTWEU 3: ROMOEU 4: /WRU 5: /PORTOEU 6: BRAMWEU 7: SROMOEU 8: /BWU 9: /WWL 10: /PORTWEL 11: ROMOEL 12: /WRL 13: /PORTOEL...

Hi, with the color bars test, the blue color is green but all is fine in game, SFIX ROM is ok. Any idea ?

Hi, I have a Z80 error with smk diagnostic rom with this message: "SM1 looks unresponsive". I changed the YM2610, the Z80, the MVS onboard SM1 Rom, there is no broken traces. I have the Z80 error with the original MVS Eprom too. It remain as easy change, the SRAM 6116, do you know if this chip...

I want my Z80 diagnostic board. Europe seller preferred. :multi_co:

almost good V_V

Hi, I have a MVS slot which had previously some click of death. I follow many traces to make me a matrix file of different links between components (and some had not a lot of information like PRO-C0) I succeed in solving the issue of COD after wiring around +10s broken traces and changed 4 RAM...