Re: Apple clone on an FPGA

[Dan Foster <usenet@evilphb.org>]

In article <1119578552.946309.299420@f14g2000cwb.googlegroups.com>, aiiadict@gmail.com <aiiadict@gmail.com> wrote:
> Yeah, would be extra great to eliminate
> the 6502 emulation in FPGA, and put
> a 14Mhz 65816 on the board.  There
> would be a ton of extra gates left (that
> the 6502 emu took) to add extra hardware,
> like clock card, echo card, parallel port,
> serial port, Z80 card, extra RAM, RGB
> output, etc etc.

Only tricky thing might be to reverse-engineer certain stuff.

Especially the Mega II, VGC, FPI, Slotmaker, IWM, and other unique ASICs.

In particular, the Mega II, which was much like a black box. Some of its
design can be guessed at, based on documented results... but likely
would require a fair amount of logic analyzer debugging on a real IIGS.

-Dan