65C02 emulation

[jedeoric]

Hello, i would like to add 65C02 emulation in oricutron (WDC version).

Anyway, what is the best way to code ? I started something but i prefer to ask before i finished it.

I did like this :
in 6502 struct, i added :
SDL_bool wdccmosversion;

Line 1943 of 6502.c, i did this (i added also cycles to this new opcode.

case 0xFA:  // PLX
	if (cpu->wdccmosversion)
	{
		cpu->x = POPB;
		FLAG_ZN(cpu->x);
		break;
            }

if you think, that it's not the best way let me know, but it's easier than switching to C++ to inherit object, or to duplicate 6502 emulation in order to manage 2 files.

Let me know !

[polluks]

You may look at cc65's sim65, we use two opcode tables.