Dreamcast Bios Dc Boot Bin Dc Flash Bin [PORTABLE]20/11
Dreamcast Bios Dc Boot Bin Dc Flash Bin
they were linked as i had soldered them together. i could have desoldered the other legs but i knew there was a second bios chip and i didnt want to confuse matters. finally, i have the bios chip ready to go.
plug in the gamepad and switch it on. if it doesnt work then you may have a dodgy joystick. try swapping it over to the new bios chip and try again. if it still doesnt work you may need to solder a wire to the gamepad.
the next most awkward wire to solder (or re-solder) is the bootstrap wire. the issue is that the manual says to solder them from the board edge to the controller, but that is not the case. you need to solder the bootstrap wire from the leg of the flash chip to the leg of the controller. i actually didn’t even realise that that was how it needed to be connected. all the instructions i had read simply said to solder the legs from the controller to the board. i suspect that because of the difficulty of the connection, they just didnt bother to mention that the bootstrap wire should be connected to the legs of the flash chip. i had to be very careful where i placed the leg of the controller chip. once i had the controller chip properly positioned and the leg of the flash chip soldered to it, i then pushed the leg of the flash chip into the controller leg, and then gently connected the bootstrap wires together, and then gently pushed the leg of the controller chip back into the leg of the flash chip.
the next leg that needs soldering is the leg of the bios chip. this is one that i found most frustrating. i tried to test connect the leg first to a leg of the other flash chip (so that the leg i had already attached to the controller was the last leg to be attached), but this made things even more complicated, and i was eventually unable to connect it at all. you have to make sure you don’t connect the leg to a leg of the same flash chip again. it is just to small to connect both legs of the flash chip to a leg of the same flash chip, so i had to solder the leg of the bios chip to the leg of the controller (using my controller leg as a reference) and then test to ensure that the leg of the controller chip was the same leg that was in the controller leg on the other side of the flash chip. when you have got this done, you then need to solder the leg of the bios chip to the leg of the flash chip. i soldered it to the controller, then soldered the leg of the flash chip into the controller leg of the controller, and then used the the controller as a reference to move the leg of the flash chip to the leg of the controller. there were a few stabs in the dark that i did, but i think that i got it right. i might have missed a leg in the controller. i did move the controller leg around, so it may have been the leg that i missed. i will post an update when i have a better photo of the finished leg of the bios chip.
you can then load the bios you have saved to your sdcard into your console by inserting it, and pressing start + a + l at the same time. this will load the new bios into system memory. note that you should only use the sdcard which is connected to your console. if you use the sdcard which is connected to the dreamcast itself, then you will not be able to boot the console.
the dreamcast bios/firmware can be found in several forms. for example, the original dreamcast bios is the bios found on the dreamcast bios-protected rom chips. the japanese dreamcast bios was later included on the japanese-language dreamcast games. the mdd bios was a version of the original dreamcast bios from mdd, the developer of the dreamcast, which is used for development hardware. this is the bios that is used for the cdi image, and so is the bios you get if you install a cdi bios update.
the us bios was later used by the sega of america dreamcast console as a standard dreamcast bios, and is located on the bios-protected rom chips. although the bios can be found as part of the dreamcast bios-protected rom chips, you can also find the bios with a bit of digging. the bios may be found on the bios-protected rom chips on a motherboard, on a dreamcast bios-protected rom chip, or even on a rom chip which has nothing to do with a dreamcast.
the dreamcast bios-protected rom chips are located in the power/reset button region of the motherboard. they can be identified by the box which contains the pin header which connects to the motherboard, and which looks like a power supply connector. you should be able to find the chips with a simple google search.