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// license:BSD-3-Clause
// copyright-holders:Ramiro Polla
/*
* E05A30 Gate Array (used in the Epson ActionPrinter 2000)
*
*/
#ifndef MAME_MACHINE_E05A30_H
#define MAME_MACHINE_E05A30_H
#pragma once
class e05a30_device : public device_t
{
public:
e05a30_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto printhead() { return m_write_printhead.bind(); }
auto pf_stepper() { return m_write_pf_stepper.bind(); }
auto cr_stepper() { return m_write_cr_stepper.bind(); }
auto ready() { return m_write_ready.bind(); }
auto centronics_ack() { return m_write_centronics_ack.bind(); }
auto centronics_busy() { return m_write_centronics_busy.bind(); }
auto centronics_perror() { return m_write_centronics_perror.bind(); }
auto centronics_fault() { return m_write_centronics_fault.bind(); }
auto centronics_select() { return m_write_centronics_select.bind(); }
auto cpu_reset() { return m_write_cpu_reset.bind(); }
auto ready_led() { return m_write_ready_led.bind(); }
void write(offs_t offset, uint8_t data);
uint8_t read(offs_t offset);
/* Centronics stuff */
DECLARE_WRITE_LINE_MEMBER( centronics_input_init );
DECLARE_WRITE_LINE_MEMBER( centronics_input_strobe );
DECLARE_WRITE_LINE_MEMBER( centronics_input_data0 ) { if (state) m_centronics_data |= 0x01; else m_centronics_data &= ~0x01; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data1 ) { if (state) m_centronics_data |= 0x02; else m_centronics_data &= ~0x02; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data2 ) { if (state) m_centronics_data |= 0x04; else m_centronics_data &= ~0x04; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data3 ) { if (state) m_centronics_data |= 0x08; else m_centronics_data &= ~0x08; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data4 ) { if (state) m_centronics_data |= 0x10; else m_centronics_data &= ~0x10; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data5 ) { if (state) m_centronics_data |= 0x20; else m_centronics_data &= ~0x20; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data6 ) { if (state) m_centronics_data |= 0x40; else m_centronics_data &= ~0x40; }
DECLARE_WRITE_LINE_MEMBER( centronics_input_data7 ) { if (state) m_centronics_data |= 0x80; else m_centronics_data &= ~0x80; }
int get_ready_led() { return !m_centronics_busy; }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
/* callbacks */
devcb_write16 m_write_printhead;
devcb_write8 m_write_pf_stepper;
devcb_write8 m_write_cr_stepper;
devcb_write_line m_write_ready;
devcb_write_line m_write_centronics_ack;
devcb_write_line m_write_centronics_busy;
devcb_write_line m_write_centronics_perror;
devcb_write_line m_write_centronics_fault;
devcb_write_line m_write_centronics_select;
devcb_write_line m_write_cpu_reset;
devcb_write_line m_write_ready_led;
void update_printhead(int pos, uint8_t data);
void update_pf_stepper(uint8_t data);
void update_cr_stepper(uint8_t data);
/* port 0x05 and 0x06 (9-bit) */
uint16_t m_printhead;
/* port 0x07 (4-bit) */
uint8_t m_pf_stepper;
/* port 0x08 (4-bit) */
uint8_t m_cr_stepper;
/* Centronics stuff */
uint8_t m_centronics_data;
int m_centronics_busy;
int m_centronics_nack;
uint8_t m_centronics_init;
uint8_t m_centronics_strobe;
uint8_t m_centronics_data_latch;
uint8_t m_centronics_data_latched;
uint32_t m_c000_shift_register;
};
DECLARE_DEVICE_TYPE(E05A30, e05a30_device)
#endif // MAME_MACHINE_E05A30_H
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