summaryrefslogtreecommitdiffstats
path: root/src/mame/includes/pc1512.h
blob: fd585b8b25146838701f12200c379e91a40b1318 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
// license:BSD-3-Clause
// copyright-holders:Curt Coder
#ifndef MAME_INCLUDES_PC1512_H
#define MAME_INCLUDES_PC1512_H

#pragma once

#include "bus/centronics/ctronics.h"
#include "bus/isa/isa.h"
#include "bus/isa/isa_cards.h"
#include "bus/isa/pc1640_iga.h"
#include "bus/pc1512/mouse.h"
#include "cpu/i86/i86.h"
#include "cpu/mcs48/mcs48.h"
#include "imagedev/floppy.h"
#include "machine/am9517a.h"
#include "machine/buffer.h"
#include "machine/ins8250.h"
#include "machine/mc146818.h"
#include "machine/pic8259.h"
#include "machine/pit8253.h"
#include "machine/pc1512kb.h"
#include "machine/upd765.h"
#include "machine/ram.h"
#include "sound/spkrdev.h"
#include "video/ams40041.h"

#include "formats/pc_dsk.h"

#define I8086_TAG       "ic120"
#define I8087_TAG       "ic119"
#define I8048_TAG       "i8048"
#define I8237A5_TAG     "ic130"
#define I8259A2_TAG     "ic109"
#define I8253_TAG       "ic114"
#define MC146818_TAG    "ic134"
#define UPD765A_TAG     "ic112"
#define INS8250_TAG     "ic106"
#define AMS40041_TAG    "ic126"
#define CENTRONICS_TAG  "centronics"
#define ISA_BUS_TAG     "isa"
#define RS232_TAG       "rs232"
#define SCREEN_TAG      "screen"

class pc1512_base_state : public driver_device
{
public:
	pc1512_base_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, I8086_TAG),
		m_dmac(*this, I8237A5_TAG),
		m_pic(*this, I8259A2_TAG),
		m_pit(*this, I8253_TAG),
		m_rtc(*this, MC146818_TAG),
		m_fdc(*this, UPD765A_TAG),
		m_uart(*this, INS8250_TAG),
		m_centronics(*this, CENTRONICS_TAG),
		m_cent_data_out(*this, "cent_data_out"),
		m_speaker(*this, "speaker"),
		m_kb(*this, PC1512_KEYBOARD_TAG),
		m_ram(*this, RAM_TAG),
		m_floppy(*this, UPD765A_TAG ":%u", 0U),
		m_bus(*this, ISA_BUS_TAG),
		m_lk(*this, "LK"),
		m_pit1(0),
		m_pit2(0),
		m_status1(0),
		m_status2(0),
		m_port61(0),
		m_nmi_enable(0),
		m_kb_bits(0),
		m_kbclk(1),
		m_kbdata(1),
		m_dreq0(0),
		m_nden(1),
		m_dint(0),
		m_ddrq(0),
		m_fdc_dsr(0),
		m_neop(0),
		m_ack_int_enable(1),
		m_centronics_ack(0),
		m_speaker_drive(0)
	{ }

	required_device<cpu_device> m_maincpu;
	required_device<am9517a_device> m_dmac;
	required_device<pic8259_device> m_pic;
	required_device<pit8253_device> m_pit;
	required_device<mc146818_device> m_rtc;
	required_device<upd765a_device> m_fdc;
	required_device<ins8250_device> m_uart;
	required_device<centronics_device> m_centronics;
	required_device<output_latch_device> m_cent_data_out;
	required_device<speaker_sound_device> m_speaker;
	required_device<pc1512_keyboard_device> m_kb;
	required_device<ram_device> m_ram;
	required_device_array<floppy_connector, 2> m_floppy;
	required_device<isa8_device> m_bus;
	required_ioport m_lk;

	virtual void machine_start() override;
	virtual void machine_reset() override;

	void update_speaker();
	void update_fdc_int();
	void update_fdc_drq();
	void update_fdc_tc();
	void update_ack();

	uint8_t system_r(offs_t offset);
	void system_w(offs_t offset, uint8_t data);
	uint8_t mouse_r(offs_t offset);
	void mouse_w(offs_t offset, uint8_t data);
	void dma_page_w(offs_t offset, uint8_t data);
	void nmi_mask_w(uint8_t data);
	uint8_t printer_r(offs_t offset);
	void printer_w(offs_t offset, uint8_t data);
	DECLARE_WRITE_LINE_MEMBER( kbdata_w );
	DECLARE_WRITE_LINE_MEMBER( kbclk_w );
	DECLARE_WRITE_LINE_MEMBER( pit1_w );
	DECLARE_WRITE_LINE_MEMBER( pit2_w );
	DECLARE_WRITE_LINE_MEMBER( hrq_w );
	DECLARE_WRITE_LINE_MEMBER( eop_w );
	uint8_t memr_r(offs_t offset);
	void memw_w(offs_t offset, uint8_t data);
	uint8_t ior1_r();
	uint8_t ior2_r();
	uint8_t ior3_r();
	void iow0_w(uint8_t data);
	void iow1_w(uint8_t data);
	void iow2_w(uint8_t data);
	void iow3_w(uint8_t data);
	DECLARE_WRITE_LINE_MEMBER( dack0_w );
	DECLARE_WRITE_LINE_MEMBER( dack1_w );
	DECLARE_WRITE_LINE_MEMBER( dack2_w );
	DECLARE_WRITE_LINE_MEMBER( dack3_w );
	DECLARE_WRITE_LINE_MEMBER( fdc_int_w );
	DECLARE_WRITE_LINE_MEMBER( fdc_drq_w );
	void drive_select_w(uint8_t data);
	DECLARE_WRITE_LINE_MEMBER( write_centronics_ack );
	DECLARE_WRITE_LINE_MEMBER( write_centronics_busy );
	DECLARE_WRITE_LINE_MEMBER( write_centronics_perror );
	DECLARE_WRITE_LINE_MEMBER( write_centronics_select );
	DECLARE_WRITE_LINE_MEMBER( write_centronics_fault );
	void mouse_x_w(uint8_t data);
	void mouse_y_w(uint8_t data);

	// system status register
	int m_pit1;
	int m_pit2;
	uint8_t m_status1;
	uint8_t m_status2;
	uint8_t m_port61;

	// interrupt state
	int m_nmi_enable;

	// keyboard state
	uint8_t m_kbd = 0;
	int m_kb_bits;
	int m_kbclk;
	int m_kbdata;

	// mouse state
	uint8_t m_mouse_x_old = 0;
	uint8_t m_mouse_y_old = 0;
	uint8_t m_mouse_x = 0;
	uint8_t m_mouse_y = 0;

	// DMA state
	uint8_t m_dma_page[4]{};
	int m_dma_channel = 0;
	int m_dreq0;

	// floppy state
	int m_nden;
	int m_dint;
	int m_ddrq;
	uint8_t m_fdc_dsr;
	int m_neop;

	// printer state
	int m_ack_int_enable;
	int m_centronics_ack;
	int m_centronics_busy = 0;
	int m_centronics_perror = 0;
	int m_centronics_select = 0;
	int m_centronics_fault = 0;
	uint8_t m_printer_data = 0;
	uint8_t m_printer_control = 0;

	// sound state
	int m_speaker_drive;
};

class pc1512_state : public pc1512_base_state
{
public:
	pc1512_state(const machine_config &mconfig, device_type type, const char *tag)
		: pc1512_base_state(mconfig, type, tag)
		, m_vdu(*this, AMS40041_TAG)
	{ }

	virtual void machine_start() override;
	virtual void machine_reset() override;

	void pc1512hd(machine_config &config);
	void pc1512(machine_config &config);
	void pc1512dd(machine_config &config);
	void pc1512_io(address_map &map);
	void pc1512_mem(address_map &map);

	required_device<ams40041_device> m_vdu;
};

class pc1640_state : public pc1512_base_state
{
public:
	pc1640_state(const machine_config &mconfig, device_type type, const char *tag)
		: pc1512_base_state(mconfig, type, tag)
		, m_sw(*this, "SW")
		, m_opt(0)
	{ }

	virtual void machine_start() override;

	uint8_t io_r(offs_t offset);
	uint8_t printer_r(offs_t offset);

	required_ioport m_sw;

	int m_opt;
	void pc1640hd(machine_config &config);
	void pc1640(machine_config &config);
	void pc1640dd(machine_config &config);
	void pc1640_io(address_map &map);
	void pc1640_mem(address_map &map);
};

#endif // MAME_INCLUDES_PC1512_H