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omf

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omf last won the day on April 4 2016

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About omf

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  1. cyan below on top picture doesnt go anywhere normal pad dodgey part
  2. thought it would be nice to attempt a descent board for the coleco rather than that shabby thing that was produced i dont know what circuitry risky has inside as that would mean damaging the label, it just triggers demo mode if 13 is not connected to ground which prevents exiting level 1, this does not happen without intervention if you have thrown your shield away if its dirty or gets in the way of various mods. i bring up the system rom because there is the option to add 32 pin roms to american units with a small mod. the super action controller has net lines that dont go anywhere on the on the numeric pad too, also there is something iffy with the normal controller in 3d preview but that could be a kicad bug?
  3. i have been looking at the schematics / pcb files in the zip, and i wanted to give a lettle feedback for the colecovision drawings. the eprom space seems to be only 28 pins which is the same as the main EU board. it would be nice to allow 32 pin chips. these are easier to come by if someone wanted to get a board made also, pin 13 on the cartridge connector is only connected to the shielding contacting screw hole, this causes issues with the risky rick game. it would be far better if these two points were connected to ground, this allows risky rick to function properly there appear to be a few pcd drawings that are incomplete with unrouted nets. good work in accumulating / drawing all those files you have shared 👍
  4. what printer do you have? i may be able to give this a go
  5. doom runs from ram its only the assets (wad) that needs to be in rom so wad swapping shouldnt be that hard, swapping thw wad out in the doom rom is as easy as finding iwad i think it is and replacing that and everything after with something else in a hex editor if you want to look at this happening right now with homebrew you need to look as this regularly, there's only a few at the moment but i expect this is only because they have ended https://www.ebay.co.uk/sch/m.html?item=312618172288&hash=item48c97ebf80%3Ag%3Azr0AAOSwtNlc0FOe&_ssn=*retroriginals*&_ipg=200&rt=nc
  6. u35 is the system bios, it will never get hot. i suppose you could replace it just to be sure i would change your attention to the small chips in front of the cartridge connector. i have had to replace one or two of these in the past in relation to red screen look at the tops very closely and see if any of them are damaged
  7. yes the blue streaks. i am sure i removed / opened / brassowed all contacts / applied dielectric grease / reassembled / resoldered the power switch im pretty sure the power supply is ok as i only have one legit power supply and using it on other machines the video output is fine saying this i do have anotehr non coleco one (its the replacement one with the din plug on, i could wire that up and check i guess. the components in that thing would be newer so would rule out the PSU, i will investigate this further.
  8. as i mentioned my odd video issues previously in this thread on my French machine here are some pictures of what i am getting. if anyone has any insight i would be grateful
  9. i think that rom used there was provided by me when i was trying to fix my french machine, i have got that thing working but still have some graphics issues with it which are not related to video ram it has white vertical ghosting lines visible on screen :/ i am not sure if the pal machine is a UK as i was given it, but i would think so because the person who i got it from is also from the UK
  10. looks like the French and normal pal bios are identical after checking my dumps i even dumped my pal again to be sure
  11. functionality exists to save the scores, however it creator chose hot to implement it along with other needy things. you best take it up with him
  12. i endured Ecco until the very end, upon completing it i was somewhat grateful. one of the later levels is very hard travelling down what can only be described at a water tube in the sky, if you swam out of these tubes you fell to your death
  13. im not saying it didnt work ok for you but it was tested at e-jagfest 2017 and selecting one of the mode (cant remember wich it was now, maybe co-op) it failed amost instanty this was with using a jaglink. after some fannying about with it it was abondoned as a lost cause and we went back to something more enjoyable that worked properly
  14. you mean what belboz and vimaster were working on years ago before they jumped ship?
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