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author AJR <ajrhacker@users.noreply.github.com>2020-03-04 14:20:05 -0500
committer AJR <ajrhacker@users.noreply.github.com>2020-03-04 14:20:05 -0500
commit30094c0abc79d86a4a34e60f0d15d92c25a78c54 (patch)
tree63f9bf42eec1e51bb3c8c812a0cc10e8b0e705f8 /src/devices
parentc641fe72db4cf7a7a90e8c8b58157d8092b05207 (diff)
upd7801, upd7807, upd7810, upd78c11: Divide internal clock by 2 or 3
Diffstat (limited to 'src/devices')
-rw-r--r--src/devices/cpu/upd7810/upd7810.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/devices/cpu/upd7810/upd7810.h b/src/devices/cpu/upd7810/upd7810.h
index 6e7a1464fa0..5905b931af1 100644
--- a/src/devices/cpu/upd7810/upd7810.h
+++ b/src/devices/cpu/upd7810/upd7810.h
@@ -131,6 +131,8 @@ protected:
virtual void device_reset() override;
// device_execute_interface overrides
+ virtual uint64_t execute_clocks_to_cycles(uint64_t clocks) const noexcept override { return (clocks + 3 - 1) / 3; }
+ virtual uint64_t execute_cycles_to_clocks(uint64_t cycles) const noexcept override { return (cycles * 3); }
virtual uint32_t execute_min_cycles() const noexcept override { return 1; }
virtual uint32_t execute_max_cycles() const noexcept override { return 40; }
virtual uint32_t execute_input_lines() const noexcept override { return 2; }
@@ -1374,6 +1376,8 @@ public:
protected:
virtual void device_reset() override;
+ virtual uint64_t execute_clocks_to_cycles(uint64_t clocks) const noexcept override { return (clocks + 2 - 1) / 2; }
+ virtual uint64_t execute_cycles_to_clocks(uint64_t cycles) const noexcept override { return (cycles * 2); }
virtual void execute_set_input(int inputnum, int state) override;
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
virtual void handle_timers(int cycles) override;