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DIY-A586 v1.6 by piotr_go

piotr_go 42774 231
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  • TomekMierzwa
    Level 9  
    Is it possible to use both cores at the same time?
  • piotr_go
    DIY electronics designer
    Yes, but you have to edit (with some hexedit) the name of the * .A586 ROM if they require other versions.
  • TomekMierzwa
    Level 9  
    I made an a586 -auto and can't enter the menu.
    Can it be avoided somehow?
  • piotr_go
    DIY electronics designer
    Hold down reset while turning on.
  • TomekMierzwa
    Level 9  
    Thanks a lot.


    Was it possible to fix something with PFS?
    FFS often has validation problems.
  • piotr_go
    DIY electronics designer
    TomekMierzwa wrote:
    Was it possible to fix something with PFS?

    It will come down with it yet.
  • TomekMierzwa
    Level 9  
    I noticed a bug in your CORE.
    Sometimes the FDD doesn't work after the reset (I have gotek from Zaxon).
    He does not see it, the reset does not help, you need to reload the cora.
  • pombearman
    Level 9  
    Way to go. This 2.0 looks great when it comes to memory.
  • piotr_go
    DIY electronics designer
    When it comes to FAST, in 1.6 it would probably be able to increase, the paths are there. CHIP is another matter, the extra DMA logic in Spartan does not fit.
    Any ideas on how to use 8MB CHIP?
  • samowitsch
    Level 6  
    Can you make a video on YT of the mikan core and of board rev2.0? Regards

    Added after 2 [hours] 2 [minutes]:

    piotr_go wrote:
    ... and news 2.0:
    Not well tested yet.
    At the moment I have no plans to share.


    What are the improvements of rev2.0?
  • piotr_go
    DIY electronics designer
    samowitsch wrote:
    Can you make a YT movie with mikan core and rev2.0 disc?

    When I finish the AGA core. It will come down with it yet.
    In days I will release version v1.9 (I skipped a few numbers :) ).

    samowitsch wrote:
    What are the improvements in version 2.0?

    Larger FPGA, 32MB RAM, USB, Audio DAC.
  • piotr_go
    DIY electronics designer
    Mikan v0.1.4:
    I added the "auto switch" function. If a floppy disk is inserted into DF1 during reset, DF1 swaps with DF0.
    DIY-A586 v1.6 by piotr_go
    For the switch to work properly, both stations must generate the _RDY signal. LEDs for stations that do not generate _RDY.
    To DF0 we connect a regular station, to DF1 we connect an emulator (something that does not require a _MTR signal, v1.6 does not have _MTR1).

    MAIN v0.4.4 beta:
    I speeded up the boot.
  • Jaca
    Level 31  
    @piotr_go Is there any possibility to remap your project to the Digilent ZedBoard Zynq-7000 ARM evaluation board (XC7Z020)?
  • piotr_go
    DIY electronics designer
    No way. I already have these plates coming out sideways, I probably fired it on 9 or 10. different of their own :D
  • shafty
    Level 9  
    Hey, I finally managed to buy a chip for amiga_floppy_splitter. I therefore have two questions:
    1. You also need to solder two capacitors 100nf and 10uF on the board. Which is which ? There are no markings on the plates.

    2. How do you program this pic? I have a programmer for them, but are there outputs for mclr, pgd, pgc, gnd on any of the pins or do you have to solder the legs?
  • piotr_go
    DIY electronics designer
    1. closer to pica give 100nF
    2. all pins are connected
  • shafty
    Level 9  
    Thanks for the info on how to solder. Unfortunately, I'm lazy in programming. I'm using a PicKIT3 programmer, I hope it's ok, if not which one should I use? Photo of my programmer below. So far, I've used it without any problems programming a chip of another project according to the instructions https://speccy.pl/wiki/index.php?title=AmiPS2#Podpiecie_Programatora. Project also built on PIC processor, but bigger.
    Below are photos of my programmer and how I connected the cables. I suggested the scheme, but I don't know if I deciphered everything correctly.

    DIY-A586 v1.6 by piotr_go
    DIY-A586 v1.6 by piotr_go

    After connecting the wires of the cables, I get the message device not found.
    Can you suggest something? Maybe there is a better, more adequate instruction for flashing such a pica somewhere?
  • piotr_go
    DIY electronics designer
    ICSPDAT - _SEL1
    ICSPCLK - _MTR
    Vpp - _SEL0
    Programmer power supply and high voltage programming.