Tuesday, June 16, 2015

Amiga 500 14 MHz accelerator with DRAM (phase 2)

The 14 MHz accelerator card project has reached a stage when real speed measurements are made possible. Based on Sysinfo speedtest results, it produces exactly twice the speed of a real Fast RAM equipped Amiga 500. See the pictures below for the wonderful, long awaited results. :)



This is not a simple 14 MHz hack, which is available on aminet. An accelerator without 0 wait state RAM worths nothing, as the CPU is always waiting for the Chip RAM and register access. We can talk about a real accelerator if there is some 0 wait state RAM available.

This card contains a 68HC000 16 MHz CPU which is running at 14 MHz, 8 MB 0 wait state RAM, which is the maximum size of the real Fast RAM in an Amiga with 24 bit address bus.

The next version will be built on a complex PCB which will contain:

  • 14 MHz 68HC000 CPU
  • 8 MB RAM
  • IDE connector
  • CF card
  • Flashkick
  • NMI button etc.  
A500 68k turbo rev 2. (top)

A500 68k turbo rev 2. (bottom)
A500 68k turbo rev 2. (top)

A500 68k turbo rev 2. (bottom)

6 comments:

  1. Gratula!

    Fasza munka!

    ReplyDelete
  2. Hi, nice work ! Are you czech ? :)

    ReplyDelete
  3. Nice, nice, nice.... Big thanks for you work... Amiga is happy

    ReplyDelete
  4. Has this progressed any further?

    ReplyDelete
  5. Is there a reason why you choose to use the edge connector instead of a board that could sit in the DIP cpu socket?

    ReplyDelete