From fac1ca581b31525279ead471282c1eed1790daab Mon Sep 17 00:00:00 2001 From: Olivier Galibert Date: Tue, 6 Nov 2012 16:27:39 +0000 Subject: 6502: Rewrite modern, cycle-exact and interruptible [O. Galibert] --- src/emu/cpu/m6502/m6504.h | 76 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) (limited to 'src/emu/cpu/m6502/m6504.h') diff --git a/src/emu/cpu/m6502/m6504.h b/src/emu/cpu/m6502/m6504.h index e69de29bb2d..73ddccde2ef 100644 --- a/src/emu/cpu/m6502/m6504.h +++ b/src/emu/cpu/m6502/m6504.h @@ -0,0 +1,76 @@ +/*************************************************************************** + + m6504.h + + Mostek 6502, NMOS variant with reduced address bus + +**************************************************************************** + + Copyright Olivier Galibert + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name 'MAME' nor the names of its contributors may be + used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY OLIVIER GALIBERT ''AS IS'' AND ANY EXPRESS OR + IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, + INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + +***************************************************************************/ + +#ifndef __M6504_H__ +#define __M6504_H__ + +#include "m6502.h" + +class m6504_device : public m6502_device { +public: + m6504_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + +protected: + class mi_6504_normal : public memory_interface { + public: + virtual UINT8 read(UINT16 adr); + virtual UINT8 read_direct(UINT16 adr); + virtual UINT8 read_decrypted(UINT16 adr); + virtual void write(UINT16 adr, UINT8 val); + }; + + class mi_6504_nd : public mi_6504_normal { + public: + virtual UINT8 read_direct(UINT16 adr); + virtual UINT8 read_decrypted(UINT16 adr); + }; + + virtual void device_start(); +}; + + +enum { + M6504_IRQ_LINE = m6502_device::IRQ_LINE, + M6504_NMI_LINE = m6502_device::NMI_LINE, + M6504_SET_OVERFLOW = m6502_device::V_LINE, +}; + +extern const device_type M6504; + +#endif -- cgit v1.2.3-70-g09d2