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Diffstat (limited to 'src/devices/cpu/upd777/upd777dasm.h')
-rw-r--r--src/devices/cpu/upd777/upd777dasm.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/src/devices/cpu/upd777/upd777dasm.h b/src/devices/cpu/upd777/upd777dasm.h
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+++ b/src/devices/cpu/upd777/upd777dasm.h
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+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb
+
+#ifndef MAME_CPU_UPD777_UPD777DASM_H
+#define MAME_CPU_UPD777_UPD777DASM_H
+
+#pragma once
+
+
+class upd777_disassembler : public util::disasm_interface
+{
+public:
+ // construction/destruction
+ upd777_disassembler();
+
+protected:
+ // disassembler overrides
+ virtual u32 opcode_alignment() const override { return 1; }
+ virtual u32 interface_flags() const override { return NONLINEAR_PC | PAGED; }
+ virtual u32 page_address_bits() const override { return 7; }
+ virtual offs_t pc_linear_to_real(offs_t pc) const override { return (pc & ~0x7f) | m_l2r[pc & 0x7f]; }
+ virtual offs_t pc_real_to_linear(offs_t pc) const override { return (pc & ~0x7f) | m_r2l[pc & 0x7f]; }
+ virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params) override;
+
+private:
+ u8 m_l2r[0x80];
+ u8 m_r2l[0x80];
+
+ std::string get_300optype_name(int optype);
+ std::string get_200optype_name(int optype);
+ std::string get_reg_name(int reg);
+};
+
+#endif // MAME_CPU_UPD777_UPD777DASM_H