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Thread: Akiko 32 - Amiga in miniITX format

  1. #31
    ElrondMcbong's Avatar
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    I know, what you mean
    I showed the board to a friend of mine and he said: Wait, where's the FPU? How can I use Cinema 4D on this?
    In this case it's simply a space problem on the board and to be honest, I did'nt have that in mind as I plan to get the GBA-060 card working for this board.

    The FPU needs some additional logic, so probably this could be done with a small PCB plugged into the CPU socket.
    Last edited by ElrondMcbong; 10th June 2020 at 07:18.

  2. #32
    Rakeim132's Avatar
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    It came a fantastic long way from the original post... Congratulations for your work and logic progress !
    I have a 060 card for my GBA1000, I never thought one day I would need another one. Ha!
    Im looking forward to seeing your progress! All the best! It is a cute form factor, definitely my favourite one...
    A600HD, A1200 in "home made" tower, A4000T in progress...

  3. #33
    puttymoon inhabitant Predseda's Avatar
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    Shall I already buy MC68030R50?
    I live among putties.
    http://puttymoon.predseda.com

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    Following. Incredible work!

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    HanJammer's Avatar
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    Yes, please. :]

  6. #36
    A1000 | A3000 | ACD32 | C-64 | C-128 32Bits's Avatar
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    Watching this with great interest... Looks Awesome!

  7. #37
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    Very nice project... following to get some more news

  8. #38
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    Quote Originally Posted by ElrondMcbong View Post
    Just want to show you my "little" project: a "new" Amiga in miniITX format

    As it is based on the Amiga CD32, it's name is Akiko 32.

    I started in December 2018 with first drafts and now I built the 3rd prototype and it's working really good now
    Matze helped me a lot with the CPLD code as this is my first project.
    The IDE/Fastram part is based on the TF328 made by Stephen Leary.

    Attachment 151876

    Specs:

    - miniITX size (170x170mm), pc case compatible
    - 68030 with 14MHz
    - AGA chipset where Lisa, Alice, Paula and the DAC are placed in THT sockets
    - Akiko Chip
    - 2MB Chipram
    - Experimental CD32/3.1.3 combined Kickstart
    - IDE controller (Gayle compatible)
    - 8MB Fastram
    - Clockport
    - "Custom-Chip" Florica
    - 20 pin ATX power connector
    - Connectors: Mouse, Joystick, Keyboard (A4000D style), Audio

    I decided to use only SMD parts in 0805 or 1206 size. I think, this size can be soldered by hand very well.
    Oh, and I don't like those resistor networks
    I replaced a few parts with newer ones, e.g. the resetgen and the OpAmp.

    A few imagaes:

    Attachment 151877Attachment 151878Attachment 151879Attachment 151880Attachment 151881Attachment 151882

    Some of the images have been made during development

    The current prototype has still some problems:

    - The power controller is not yet on the board as I decided to replace the NE555 switch with a power controller IC
    - Power LED is not dimmed for active audio filter or at reset
    - Pinout at the OpAmp is wrong
    - Mouse/Joystick have to directions wrong
    - Pinout for resetgen is wrong
    - In theory, there is a floppy port, but I'm thinking of drop it in favor of other things
    - Some traces have to be added from Florica to CPU
    - Two mouting holes are too big and need adjustment

    So, at the moment I'm working to get rid of all problems and try to remove all errors.
    My plan is to open-source the whole thing when it's finished.

    A case is also missing...
    will this be a full production? or just one unit?

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