Tuesday, September 15, 2015

HC508 Amiga 500 accelerator card

Finally, the project has reached a stage when complete system tests are possible The integrated CF + IDE allows running the complete OS 3.1 with WHDLoad.

Key features:
  • 68HC000 CPU running at 50 MHz (100% MC68000 compatible)
  • 40 pin IDE connector for HDD, CD ROM etc.
  • Integrated CF card connector
  • 8 MB Fast RAM (1 wait state)
  • 512k FlashROM for Kickstart (1 wait state)
  • Utility for disabling / enabling every module separately (XCPU, XRAM, XROM, IDE)

The HDD read rate is really great: with an IDE HDD it produces 4.8-5 MB/s, while the CF card's transfer rate varies around 3.2 MB/s. On the picture below the IDE HDD read speed is shown.


As before, this (3rd) prototype board is also home made. Top and bottom views are available below:


And a small video which demonstrates the system performance. The complete OS 3.1 boots in 2 seconds from a CF card. Frontier is running with 40-50 FPS. Who needs more? :)

30 comments:

  1. Wow! I think I still have my A500 somewhere in the garage bunker. Fantastic project, my hat's off very deeply.

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  2. got your board art and code up anywhere?

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  3. Thank You guys for the moral support. :)

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  4. Very nice, I enjoy for finaly product.

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  5. this is it, maximum respect.
    just trying to revive a rusty a500... if i succeed, i'm looking forward to build this!

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  6. That's pretty cool. What's the second chip there, a CPLD to generate the RAS/CAS or does it do a bit more?

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  7. It is a XC95144XL, the "heart" of the whole system. It controls the:

    -RAM access, refresh
    -external CPU
    -Flash ROM
    -Autoconfig
    -IDE

    etc.

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  8. Impressive. Sell it as a DIY solder kit and I'd buy one :)

    Is that '000 overclocked from 16MHz?

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  9. Yes, an overclocked 68HC000FN16

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  10. Not yet available, still in testing phase.

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  11. Excellent! Will it be available for sale ?

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  12. Shut up and take my money!

    ;-)))

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  13. Hi, any news on this or is the project dead?

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  14. Really impressive work!
    It's a lot of work to build such clean multi-layer PCB's with SMD components and home made connectors.
    Good luck with the project.

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  15. Hi, any news on this or is the project dead?

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  16. 2 prototypes exist, both are running fine. ;)

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  17. 1. Hello, would this be a direct replacement for my Kipper2k A508HD card, which already has a CF card hard disk running my A500? In other words, would it allow me to run my existing CF card and boot as normal (only faster)?

    2. Where may I sign up to know when it is officially released so you can STFU and take my money? ;)

    –Starglider

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  18. Hello Starglider, thank You for the message.

    Yes, any Amiga formatted CF card can be used with it, like in A1200 / A600. The CF performance is very good (3-4 MB/s read rate).

    I'll never accept payment in advance while there are no cards available for sale. You can use the contact form on the right side to send a PM.

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  19. Hi, have you something new???

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  20. Waiting for components from China...

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  21. Hi mc68, I have been googling for an open project amiga 500 ide controller but I found something much much better. :D. You did a wonderful job. :)
    What is that header near cpu for?

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  22. Hi, You are using a scandoubler? Or this monitor is capable to work with Amiga mhz?

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  23. Using scandoubler, of course. ;)

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  24. Why didn't you tell him that scandoubler is your own product? ;-)

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  25. Absolutely stunning. I've been hoping to come across something like this for awhile now. Consider this site bookmarked!

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  26. Hello, more than 6 months passed after last post, is this project still alive? Where can i buy one?

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  27. Dear Juri,

    I have a few units for sale. Please PM me for the details.

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