psyq 64DD dev support

Discussion in 'Nintendo Game Development' started by willis82, Jul 23, 2009.

  1. willis82

    willis82 Robust Member

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    anyone out there know if or been able to use the psyq dev equipment on a 64dd dev drive? kammedo and I have been in discussion about it and he thinks they did support the DD as do I but we haven't been able to find any information about it. so we decided to ask here.............
     
    Last edited: Jul 25, 2009
  2. kammedo

    kammedo and the lost N64 Hardware Docs

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    Would definitely be intresting to know! Considering the Psyq was one of the first Dev kits for the N64, it should have some (minor) 64dd support.
     
  3. marshallh

    marshallh N64 Coder

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    What do you mean? All you have to do is to convert the LEO libs from the nintendo .a object archive format to the PsyQ LIB format. I think the SDK that's leaked already has this.

    The IPL4 rom that normally starts when teh 64DD is booted is simply a fancier version of the 4k bootcode that is at the beginning of all N64 roms. While the 4k bootcode is hard-coded to DMA in 1MB of ROM, with the IPL4 it can DMA any initial amount. Then it jumps to the code start address.

    If you wrote a wrapper for the LEO functions to translate to cart PI, you could very easily develop for the 64DD without even owning one.
     
  4. willis82

    willis82 Robust Member

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    we're interested in actually using the drive as in the "makedisk" function in the partner N software to write disks. We are trying to write to the actual blue disks with the sn64 kit which we have yet to find a way. Kammedo and I figured they would have supported the DD but nothing has surfaced yet. we can upload the iplrom from the nintendo partner N software and boot the blue drive to check to see in anything is on the disks, I've even run it on the DCC board with the iplrom cart to get error code text (error 23, which means the disks are blank). Now we are trying to actually write to the disks with the SN64 kit.
     
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