diff options
Diffstat (limited to 'src/devices/machine/6821pia.h')
-rw-r--r-- | src/devices/machine/6821pia.h | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/src/devices/machine/6821pia.h b/src/devices/machine/6821pia.h index 156d1d65b0c..8c017b786fb 100644 --- a/src/devices/machine/6821pia.h +++ b/src/devices/machine/6821pia.h @@ -112,8 +112,8 @@ public: DECLARE_WRITE_LINE_MEMBER( ca1_w ); DECLARE_WRITE_LINE_MEMBER( ca2_w ); - int ca2_output(); - int ca2_output_z(); + bool ca2_output(); + bool ca2_output_z(); DECLARE_WRITE8_MEMBER( portb_w ) { portb_w(data); } void portb_w(uint8_t data); @@ -122,8 +122,8 @@ public: DECLARE_WRITE_LINE_MEMBER( cb1_w ); DECLARE_WRITE_LINE_MEMBER( cb2_w ); - int cb2_output(); - int cb2_output_z(); + bool cb2_output(); + bool cb2_output_z(); int irq_a_state() const { return m_irq_a_state; } int irq_b_state() const { return m_irq_b_state; } @@ -168,6 +168,21 @@ private: void control_a_w(uint8_t data); void control_b_w(uint8_t data); + static bool irq1_enabled(uint8_t c); + static bool c1_low_to_high(uint8_t c); + static bool c1_high_to_low(uint8_t c); + static bool output_selected(uint8_t c); + static bool irq2_enabled(uint8_t c); + static bool strobe_e_reset(uint8_t c); + static bool strobe_c1_reset(uint8_t c); + static bool c2_set(uint8_t c); + static bool c2_low_to_high(uint8_t c); + static bool c2_high_to_low(uint8_t c); + static bool c2_set_mode(uint8_t c); + static bool c2_strobe_mode(uint8_t c); + static bool c2_output(uint8_t c); + static bool c2_input(uint8_t c); + devcb_read8 m_in_a_handler; devcb_read8 m_in_b_handler; devcb_read_line m_in_ca1_handler; |