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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
i8x9x.h
MCS96, 8x9x branch, the original version
***************************************************************************/
#ifndef __I8X9X_H__
#define __I8X9X_H__
#include "mcs96.h"
class i8x9x_device : public mcs96_device {
public:
enum {
A0, A1, A2, A3, A4, A5, A6, A7,
SERIAL,
P0, P1, P2
};
i8x9x_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
void serial_w(UINT8 val);
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const override;
static const disasm_entry disasm_entries[0x100];
virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options) override;
virtual void do_exec_full() override;
virtual void do_exec_partial() override;
virtual void internal_update(UINT64 current_time) override;
virtual void io_w8(UINT8 adr, UINT8 data) override;
virtual void io_w16(UINT8 adr, UINT16 data) override;
virtual UINT8 io_r8(UINT8 adr) override;
virtual UINT16 io_r16(UINT8 adr) override;
private:
enum {
IRQ_TIMER = 0x01,
IRQ_AD = 0x02,
IRQ_HSI = 0x04,
IRQ_HSO = 0x08,
IRQ_HSI0 = 0x10,
IRQ_SOFT = 0x20,
IRQ_SERIAL = 0x40,
IRQ_EXTINT = 0x80
};
struct hso_cam_entry {
bool active;
UINT8 command;
UINT16 time;
};
address_space_config io_config;
address_space *io;
hso_cam_entry hso_info[8];
hso_cam_entry hso_cam_hold;
UINT64 base_timer2, ad_done;
UINT8 hso_command, ad_command;
UINT16 hso_time, ad_result;
UINT8 ios0, ios1, ioc0, ioc1;
UINT8 sbuf, sp_stat;
UINT8 serial_send_buf;
UINT64 serial_send_timer;
UINT16 timer_value(int timer, UINT64 current_time) const;
UINT64 timer_time_until(int timer, UINT64 current_time, UINT16 timer_value) const;
void commit_hso_cam();
void trigger_cam(int id, UINT64 current_time);
void ad_start(UINT64 current_time);
void serial_send(UINT8 data);
void serial_send_done();
};
class c8095_device : public i8x9x_device {
public:
c8095_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
class p8098_device : public i8x9x_device {
public:
p8098_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type C8095;
extern const device_type P8098;
#endif
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