Re: [oc] T80 cpu version 0242 released

[Marko Mlinar <markom@opencores.org>]

On Wednesday 23 October 2002 17:27, jesus@opencores.org wrote:
> Hi,
> A lot of improvements have been made to T80's Z80 mode since the first
> release. Here are the most important:
>
> The size is now comparable to other commercial Z80 cores as it now
> compiles to about 10k gates.
>
> Thanks to MikeJ the instruction timing has been verified against a real
> Z80 and they now stay in sync indefinitely when they are compared in
> Mike's pacman implementation.
> From this short sequence:
> http://www.e.kth.se/~e93_daw/vhdl/download/Perfect.TIF
> it can be seen that the refresh address is also correct.
> Mike's pacman can be found at:
> http://www.fpgaarcade.com
>
> It has also successfully been used in zxgate's Spectrum implementation.
> A complete ZX Spectrum in one FPGA + ROM and RAM!
> As well as in the ZX81, Jupiter ACE and TRS80 at:
> http://zxgate.sourceforge.net
>
> The 8080 mode has been completed and verified in Space Invaders (Also
> at FPGA Arcade).
Great work!

Marko

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