Re: 6510 CPU extensions

From: Hársfalvi Levente (
Date: 2002-04-22 09:31:31

  • Next message: Gideon Zweijtzer: "RE: 6510 CPU extensions"
    Gideon Zweijtzer wrote:
    > Last weekend I implemented an extra feature to the 6510 FPGA. It is now
    > possible to connect the 6510 board to the PC by means of a serial cable. A
    > simple UART inside the CPU (that runs at a fixed bitrate of approx. 115200)
    > gives access to the CPU-bus by means of a simple protocol. This hardware
    > protocol-block is capable of generating internal DMA cycles. In other words,
    > it is now possible to look in the C-64's memory or write into the C-64's
    > memory while the C-64 is running.
    In other words, you made the first in-circuit emulator for the C64,
    right? ;-)
    BTW: what's your opinion, should it be possible to modify your design
    for emulating a 8501 CPU (the heart of C16 / C116 / Plus/4)?
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