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Diffstat (limited to 'src/devices/machine/7400.h')
-rw-r--r-- | src/devices/machine/7400.h | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/src/devices/machine/7400.h b/src/devices/machine/7400.h deleted file mode 100644 index 40ac9280cd3..00000000000 --- a/src/devices/machine/7400.h +++ /dev/null @@ -1,85 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Ryan Holtz -/***************************************************************************** - - 7400 Quad 2-Input NAND Gate - -*********************************************************************** - - Connection Diagram: - ___ ___ - 1A 1 |* u | 14 Vcc - 1B 2 | | 13 4B - 1Y 3 | | 12 4A - 2A 4 | | 11 4Y - 2B 5 | | 10 3B - 2Y 6 | | 9 3A - GND 7 |_______| 8 3Y - - Truth Table: - ___________ - | A | B | Y | - |---|---|---| - | 0 | 0 | 0 | - | 0 | 1 | 0 | - | 1 | 0 | 0 | - | 1 | 1 | 1 | - |___|___|___| - -**********************************************************************/ - -#ifndef MAME_MACHINE_7400_H -#define MAME_MACHINE_7400_H - -#pragma once - -class ttl7400_device : public device_t -{ -public: - // construction/destruction - ttl7400_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); - - template <std::size_t Bit> auto y_cb() { return m_y_func[Bit].bind(); } - - // public interfaces - DECLARE_WRITE_LINE_MEMBER( a1_w ); - DECLARE_WRITE_LINE_MEMBER( a2_w ); - DECLARE_WRITE_LINE_MEMBER( a3_w ); - DECLARE_WRITE_LINE_MEMBER( a4_w ); - DECLARE_WRITE_LINE_MEMBER( b1_w ); - DECLARE_WRITE_LINE_MEMBER( b2_w ); - DECLARE_WRITE_LINE_MEMBER( b3_w ); - DECLARE_WRITE_LINE_MEMBER( b4_w ); - - DECLARE_READ_LINE_MEMBER( y1_r ); - DECLARE_READ_LINE_MEMBER( y2_r ); - DECLARE_READ_LINE_MEMBER( y3_r ); - DECLARE_READ_LINE_MEMBER( y4_r ); - -protected: - void a_w(uint8_t line, uint8_t state); - void b_w(uint8_t line, uint8_t state); - uint8_t y_r(uint8_t line); - - // device-level overrides - virtual void device_start() override; - virtual void device_reset() override; - -private: - void update(); - - // callbacks - devcb_write_line m_y_func[4]; - - // inputs - uint8_t m_a; // pins 1,4,9,12 - uint8_t m_b; // pins 2,5,10,13 - - // outputs - uint8_t m_y; // pins 3,6,8,11 -}; - -// device type definition -DECLARE_DEVICE_TYPE(TTL7400, ttl7400_device) - -#endif // MAME_MACHINE_7400_H |