Viewing 8 posts - 1 through 8 (of 15 total)
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  • #3499
    Just4FunJust4Fun
    Participant

    Lately I have had time to complete the PCB “successor” of the Z80-MBC, which of course could only be called Z80-MBC2:

    Like its predecessor uses a Atmega32A as EPROM (that requires no EPROM programmer), universal emulator I / O and clock generator. Plus utilizes a RAM Memory Bank 128KB, OS and how you can use the CP / M 2.2 or the CP / M 3 (taking advantage of the RAM in benches).
    The Atmega32A has the Arduino bootloader and everything FW was developed with the Arduino IDE.
    As disk uses a SD, and it is also present an RTC and an expansion from 16 optional GPIO.
    Obviously there is still much to develop, and as soon as I prepared this page “official” I'll put the link here, so that those who may be concerned may follow developments…

    • This topic was modified right now by Just4FunJust4Fun.
    • This topic was modified right now by Just4FunJust4Fun.
    #3510
    Just4FunJust4Fun
    Participant

    And now the first tests…:

    #3549
    Avatargianmagna
    Participant

    hello Just4Fun
    This I would not have waited, we are in 2018 and I hear of CP / M 2.2 and CP / M 3, I used them on computers with Z80 between 78 e 83
    and to think that's not much you or thrown manuals and diskettes 5″ del CP/M3 .
    and add that especially the CP / M 3 It was a great OS .
    A question arises as you've driven on a microSD CPM .
    The thing I sconfiffera I look forward to further developments.
    ciao
    Gianfranco

    Ps: I still in the garage with a NorthStar diskettes with CP / M 2.2 ,but I fear that nothing will work nn.

    #3565
    Just4FunJust4Fun
    Participant

    hello Gianfranco,
    to tell the truth I do not even know how I ended up doing these things… probably because I enjoy it…
    However, there is a large circle of fans and Z80 CP / M around the world, so much so that the predecessor Z80-MBC has won an award in the USA and is sold as a kit in Japan.
    The Z80-MBC2 is a “ongoing project” and much development needs to be done. When I prepared the web page for the Z80-MBC2 will post the link here, so if you're interested you can follow it up with all the details of the case.
    If you want you can take a look at its predecessor, the Z80-MBC, which is the CP / M 2.2 the QP / M 2.71, with two virtual floppy disk emulated with two eeprom:

    Ciao.
    J4F

    • This reply was modified right now by Just4FunJust4Fun.
    • This reply was modified right now by Just4FunJust4Fun.
    #3570
    Avatargianmagna
    Participant

    I saw the video and even a bit of throwback.


    It is the same as I have in the garage.
    I have a homebuilt of 77 with the 6502 , that graphic characters had to get even basic games ,output to tape to save programs was made using the card OHIO scientific C1P
    then modified to have twice the number of rows and also twice the clock speed,
    let's say that I enjoyed it enough to change course and use it ,It was the predecessor of the commodore Vic20
    I also have two Apple II , amiga 500 ,amiga 1000, floppy commodore ,msx with z80 ,between 78 e 83 I was doing the maintenance repair machines in CP / M
    different brands Altos, Horizon Northstar, and altre.poi came the PC with the dos and gradually the various windows.
    I can say that the first Intel 4004 the 8080 z80 and then I learned the ropes .
    I'm going to PIC and some Atmel for fun or almost ,let's say you try to stay up to date with technology
    I still z80 CPU and peripherals Sio Pius maybe DMA ,EPROM ram and so on and so forth.
    I will follow you to view your web pages
    Meanwhile, I salute you
    Ciao
    Gianfranco

    #3661
    Just4FunJust4Fun
    Participant

    For those interested, I have just published the web page related to the Z80-MBC2.

    #3672
    Just4FunJust4Fun
    Participant

    For those who want to easily create a “batch” PCB for the Z80-MBC2 have prepared an order ready for use who.
    Just press the button “Add to cart” and proceed to the order (obviously you need to be registered to the PCB manufacturer site).

    #3678
    Just4FunJust4Fun
    Participant

    E’ just released an article on Hackaday Z80-MBC2! who!

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