Viewing 15 posts - 1 through 15 (of 18 total)
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  • #3964
    Just4Fun
    Just4Fun
    Participant

    “The thing” is growing…

    …but there is still a job… terrifying… 🙂

    Stay tuned…

    #3968

    Amilcare
    Keymaster

    Hoping it's a little’ Ben finest thing of the fantastic 4

    #3979
    Just4Fun
    Just4Fun
    Participant

    Lately I've made some progress, but the part “Fund” it has to come yet…

    PS: still it does not look like Ben… 🙂

    #3991
    Just4Fun
    Just4Fun
    Participant

    I would say that you begin to see a faint light at the end of the tunnel… now missing from plug about half of the pins of the FPGA RAM (which it is under) and to the control lines:

    #3993

    Amilcare
    Keymaster

    What each use? It seems something very professional.

    #3995
    Just4Fun
    Just4Fun
    Participant

    Kicad 5: http://kicad-pcb.org/ 🙂

    #4080
    Just4Fun
    Just4Fun
    Participant

    The routing is now complete (excluding some final tweaking). Now I want to try to see if I can put two “footprints” to the SD card, so that you can choose how to SD “holder” between the micro-SD format or what “classic” I had originally planned:

    #4159
    Just4Fun
    Just4Fun
    Participant

    I also added the micro-SD connector (and some other small change). Now one last check and then you can send it in manufacturing… 🙂

    #4370
    Just4Fun
    Just4Fun
    Participant

    PCB arrived… Now begin the dances…. 🙂

    #4619
    Just4Fun
    Just4Fun
    Participant

    Mounted its part in the STM32 and installed the bootloader. Now I can load the FW IDE Arduino with USB. But that was the easy part….

    #4623
    Just4Fun
    Just4Fun
    Participant

    Verified the FPGA programming function both in JTAG mode that ASP!
    Yes can continue… 🙂

    #4629
    Just4Fun
    Just4Fun
    Participant

    I soldered other components in order to test a first test softcore that implements in HW SOC with a CPU 6809, ROM with BASIC interpreter, 2KB of RAM, VDU da 80 column, PS / 2 keyboard controller…

    and this is the result:

    It works! 🙂

    The next step will be to assemble also on board socket for SD (to emulate an HD) e la da 512KB RAM…

    #4631

    Amilcare
    Keymaster

    I am following with interest and a touch of envy your progress
    Good, keep going this way

    #4680
    Just4Fun
    Just4Fun
    Participant

    I tested another softcore which also uses the external RAM and SD. The softcore implements a SOC with Z80, 64KB RAM, VDU Color, PS / 2 keyboard, 16HD emulation of SD, CP / M operating system 2.2:

    Now I can move on to assemble a second PCB this time using a socket for micro SD, to prove it can also “configuration”…

    • This reply was modified 7 months, 3 weeks ago by Just4Fun Just4Fun.
    • This reply was modified 7 months, 3 weeks ago by Just4Fun Just4Fun.
    #4703
    Just4Fun
    Just4Fun
    Participant

    For those interested I have created a page on hackaday.io with more details.

    • This reply was modified 7 months, 2 weeks ago by Just4Fun Just4Fun.
    • This reply was modified 7 months, 2 weeks ago by Just4Fun Just4Fun.
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