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author Olivier Galibert <galibert@pobox.com>2012-11-06 16:27:39 +0000
committer Olivier Galibert <galibert@pobox.com>2012-11-06 16:27:39 +0000
commitfac1ca581b31525279ead471282c1eed1790daab (patch)
tree3870b4c93b8c72f54062dbe68a0cbd2750c9ec26 /src/emu/cpu/m6502/m6504.h
parent54b3c7a31dd607b734e55d9ca96254f0801abb6b (diff)
6502: Rewrite modern, cycle-exact and interruptible [O. Galibert]
Diffstat (limited to 'src/emu/cpu/m6502/m6504.h')
-rw-r--r--src/emu/cpu/m6502/m6504.h76
1 files changed, 76 insertions, 0 deletions
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