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Re: FPGA motherboard for 80386 CPU

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On Friday, November 10, 2017 at 10:35:44 AM UTC-5, Rick C. Hodgin wrote:
> The 80386DX CPU had 132 pins:
> 
>     80386DX and 80386SX pinouts:
>     http://www.rfwireless-world.com/images/80386-pin-diagram.jpg
>     https://image.slidesharecdn.com/salientfeatursof80386-140822084001-phpapp02/95/salient-featurs-of-80386-14-638.jpg?cb=1408709884
> 
>     General architecture:
>     http://www.nptel.ac.in/courses/Webcourse-contents/IISc-BANG/Microprocessors%20and%20Microcontrollers/pdf/Teacher_Slides/mod8/M8L1.pdf
> 
> Of these pins on the DX variant:
> 
>     32 pins -- data
>     30 pins -- address
>      4 pins -- byte enables in 32-bit writes
>      1 pin  -- Read/write
>      1 pin  -- Data/Control
>      1 pin  -- Memory/IO
>      1 pin  -- Bus mastering lock issued by CPU
>      1 pin  -- Bus16 size (16-bit when asserted, normally 32-bit)
>      1 pin  -- Next address (for pipelining)
>      1 pin  -- Address valid signal
>     --
>     73 pins -- For basic I/O
> 
>      3 pins -- Math-coprocessor support
>      1 pin  -- Ready (or Wait, for bus cycles to complete)
>      2 pins -- Hold and Hold Acknowledge (for bus mastering)
>      2 pins -- Interrupt and Non-masktable Interrupt
>     --
>      8 pins -- General coordination with external peripherals
> 
>      1 pin  -- Reset
>      1 pin  -- Double-pumped clock
>     --
>      2 pins -- System input
> 
> The rest of the pins are unused, go to VSS or VCC.  This means that for a
> full 80386 "motherboard" only 83 pins are required to fully support its
> operation, 67 of which are address, data, and data type, leaving really
> only 15 pins of complex operation for a state machine.
> 
> -----
> Would anybody be able to help me create this 80386 motherboard using an
> AMD Am386 CPU, which is a static CPU operating from 0 to 40 MHz?  I would
> like to get it working with a single-step operation for design validation,
> and then to begin ramping it up.
> 
> I figure I'll have an area of ROM which the CPU boots to load, which is a
> tiny real mode program, which begins computing something that can be exam-
> ined by the FPGA to test successful operation.  And then move on to more
> complex operations, including a custom microkernel.

What is a reliable provider for me to download design tools and make
this board?  And are there providers that can do the soldering for me
as part of the price?

-- 
Rick C. Hodgin

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FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-10 07:35 -0800
  Re: FPGA motherboard for 80386 CPU rickman <gnuarm@gmail.com> - 2017-11-10 14:46 -0500
    Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-10 12:19 -0800
      Re: FPGA motherboard for 80386 CPU rickman <gnuarm@gmail.com> - 2017-11-10 16:11 -0500
        Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-10 14:14 -0800
          Re: FPGA motherboard for 80386 CPU rickman <gnuarm@gmail.com> - 2017-11-10 18:31 -0500
            Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-10 15:59 -0800
              Re: FPGA motherboard for 80386 CPU rickman <gnuarm@gmail.com> - 2017-11-10 22:15 -0500
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-10 20:16 -0800
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-11 10:43 -0800
      Re: FPGA motherboard for 80386 CPU lasselangwadtchristensen@gmail.com - 2017-11-10 13:15 -0800
        Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-10 14:02 -0800
          Re: FPGA motherboard for 80386 CPU lasselangwadtchristensen@gmail.com - 2017-11-13 08:28 -0800
            Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-13 08:49 -0800
              Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-13 09:33 -0800
              Re: FPGA motherboard for 80386 CPU lasselangwadtchristensen@gmail.com - 2017-11-13 11:47 -0800
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-13 11:54 -0800
                Re: FPGA motherboard for 80386 CPU lasselangwadtchristensen@gmail.com - 2017-11-13 12:06 -0800
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-13 12:15 -0800
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-21 01:33 -0800
                Re: FPGA motherboard for 80386 CPU Richard Damon <Richard@Damon-Family.org> - 2017-12-22 19:23 -0500
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-24 14:04 -0800
                Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-20 05:49 -0800
  Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-12 12:10 -0800
    Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-14 06:29 -0800
  Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-28 07:32 -0800
    Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-30 09:54 -0800
      Re: FPGA motherboard for 80386 CPU Richard Damon <Richard@Damon-Family.org> - 2017-12-30 15:18 -0500
        Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-31 00:20 -0800
          Re: FPGA motherboard for 80386 CPU Emilian Miron <emilian.miron@gmail.com> - 2017-12-31 07:20 -0800
            Re: FPGA motherboard for 80386 CPU "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-12-31 13:52 -0800

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