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Diffstat (limited to 'src/devices/cpu/m6502/g65sc02.h')
-rw-r--r--src/devices/cpu/m6502/g65sc02.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/devices/cpu/m6502/g65sc02.h b/src/devices/cpu/m6502/g65sc02.h
new file mode 100644
index 00000000000..e98f068b60d
--- /dev/null
+++ b/src/devices/cpu/m6502/g65sc02.h
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+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/***************************************************************************
+
+ g65sc02.h
+
+ 65c02 with internal static registers, making clock stoppable?
+
+***************************************************************************/
+
+#ifndef MAME_CPU_M6502_G65SC02_H
+#define MAME_CPU_M6502_G65SC02_H
+
+#include "w65c02.h"
+
+class g65sc02_device : public w65c02_device {
+public:
+ g65sc02_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+ g65sc02_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
+};
+
+class g65sc12_device : public g65sc02_device {
+public:
+ g65sc12_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+};
+
+class g65sc102_device : public g65sc02_device {
+public:
+ g65sc102_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+ virtual uint64_t execute_clocks_to_cycles(uint64_t clocks) const noexcept override { return (clocks + 4 - 1) / 4; }
+ virtual uint64_t execute_cycles_to_clocks(uint64_t cycles) const noexcept override { return (cycles * 4); }
+};
+
+class g65sc112_device : public g65sc02_device {
+public:
+ g65sc112_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+};
+
+enum {
+ G65SC02_IRQ_LINE = m6502_device::IRQ_LINE,
+ G65SC02_NMI_LINE = m6502_device::NMI_LINE,
+ G65SC02_SET_OVERFLOW = m6502_device::V_LINE
+};
+
+DECLARE_DEVICE_TYPE(G65SC02, g65sc02_device)
+DECLARE_DEVICE_TYPE(G65SC12, g65sc12_device)
+DECLARE_DEVICE_TYPE(G65SC102, g65sc102_device)
+DECLARE_DEVICE_TYPE(G65SC112, g65sc112_device)
+
+#endif // MAME_CPU_M6502_G65SC02_H