summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/machine/pp01.c
blob: 6ad4f5639fffd8d2218ea80a6603d673ab9ce2a4 (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
/***************************************************************************

        PP-01 driver by Miodrag Milanovic

        08/09/2008 Preliminary driver.

****************************************************************************/


#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "includes/pp01.h"
#include "machine/ram.h"


WRITE8_MEMBER(pp01_state::pp01_video_write_mode_w)
{
	m_video_write_mode = data & 0x0f;
}

static void pp01_video_w(running_machine &machine,UINT8 block,UINT16 offset,UINT8 data,UINT8 part)
{
	pp01_state *state = machine.driver_data<pp01_state>();
	UINT16 addroffset = part ? 0x1000  : 0x0000;
	UINT8 *ram = machine.device<ram_device>(RAM_TAG)->pointer();

	if (BIT(state->m_video_write_mode,3)) {
		// Copy mode
		if(BIT(state->m_video_write_mode,0)) {
			ram[0x6000+offset+addroffset] = data;
		} else {
			ram[0x6000+offset+addroffset] = 0;
		}
		if(BIT(state->m_video_write_mode,1)) {
			ram[0xa000+offset+addroffset] = data;
		} else {
			ram[0xa000+offset+addroffset] = 0;
		}
		if(BIT(state->m_video_write_mode,2)) {
			ram[0xe000+offset+addroffset] = data;
		} else {
			ram[0xe000+offset+addroffset] = 0;
		}
	} else {
		if (block==0) {
			ram[0x6000+offset+addroffset] = data;
		}
		if (block==1) {
			ram[0xa000+offset+addroffset] = data;
		}
		if (block==2) {
			ram[0xe000+offset+addroffset] = data;
		}
	}
}

WRITE8_MEMBER(pp01_state::pp01_video_r_1_w)
{
	pp01_video_w(machine(),0,offset,data,0);
}
WRITE8_MEMBER(pp01_state::pp01_video_g_1_w)
{
	pp01_video_w(machine(),1,offset,data,0);
}
WRITE8_MEMBER(pp01_state::pp01_video_b_1_w)
{
	pp01_video_w(machine(),2,offset,data,0);
}

WRITE8_MEMBER(pp01_state::pp01_video_r_2_w)
{
	pp01_video_w(machine(),0,offset,data,1);
}
WRITE8_MEMBER(pp01_state::pp01_video_g_2_w)
{
	pp01_video_w(machine(),1,offset,data,1);
}
WRITE8_MEMBER(pp01_state::pp01_video_b_2_w)
{
	pp01_video_w(machine(),2,offset,data,1);
}


static void pp01_set_memory(running_machine &machine,UINT8 block, UINT8 data)
{
	pp01_state *state = machine.driver_data<pp01_state>();
	UINT8 *mem = state->memregion("maincpu")->base();
	address_space &space = machine.device("maincpu")->memory().space(AS_PROGRAM);
	UINT16 startaddr = block*0x1000;
	UINT16 endaddr   = ((block+1)*0x1000)-1;
	UINT8  blocknum  = block + 1;
	char bank[10];
	sprintf(bank,"bank%d",blocknum);
	if (data>=0xE0 && data<=0xEF) {
		// This is RAM
		space.install_read_bank (startaddr, endaddr, bank);
		switch(data) {
			case 0xe6 :
					space.install_write_handler(startaddr, endaddr, write8_delegate(FUNC(pp01_state::pp01_video_r_1_w),state));
					break;
			case 0xe7 :
					space.install_write_handler(startaddr, endaddr, write8_delegate(FUNC(pp01_state::pp01_video_r_2_w),state));
					break;
			case 0xea :
					space.install_write_handler(startaddr, endaddr, write8_delegate(FUNC(pp01_state::pp01_video_g_1_w),state));
					break;
			case 0xeb :
					space.install_write_handler(startaddr, endaddr, write8_delegate(FUNC(pp01_state::pp01_video_g_2_w),state));
					break;
			case 0xee :
					space.install_write_handler(startaddr, endaddr, write8_delegate(FUNC(pp01_state::pp01_video_b_1_w),state));
					break;
			case 0xef :
					space.install_write_handler(startaddr, endaddr, write8_delegate(FUNC(pp01_state::pp01_video_b_2_w),state));
					break;

			default :
					space.install_write_bank(startaddr, endaddr, bank);
					break;
		}

		state->membank(bank)->set_base(machine.device<ram_device>(RAM_TAG)->pointer() + (data & 0x0F)* 0x1000);
	} else if (data>=0xF8) {
		space.install_read_bank (startaddr, endaddr, bank);
		space.unmap_write(startaddr, endaddr);
		state->membank(bank)->set_base(mem + ((data & 0x0F)-8)* 0x1000+0x10000);
	} else {
		logerror("%02x %02x\n",block,data);
		space.unmap_readwrite (startaddr, endaddr);
	}
}

void pp01_state::machine_reset()
{
	int i;
	memset(m_memory_block,0xff,16);
	for(i=0;i<16;i++) {
		m_memory_block[i] = 0xff;
		pp01_set_memory(machine(), i, 0xff);
	}
}

WRITE8_MEMBER(pp01_state::pp01_mem_block_w)
{
	m_memory_block[offset] = data;
	pp01_set_memory(machine(), offset, data);
}

READ8_MEMBER(pp01_state::pp01_mem_block_r)
{
	return	m_memory_block[offset];
}

void pp01_state::machine_start()
{
}


WRITE_LINE_MEMBER(pp01_state::pp01_pit_out0)
{
}

WRITE_LINE_MEMBER(pp01_state::pp01_pit_out1)
{
}

const struct pit8253_config pp01_pit8253_intf =
{
	{
		{
			0,
			DEVCB_NULL,
			DEVCB_DRIVER_LINE_MEMBER(pp01_state,pp01_pit_out0)
		},
		{
			2000000,
			DEVCB_NULL,
			DEVCB_DRIVER_LINE_MEMBER(pp01_state,pp01_pit_out1)
		},
		{
			2000000,
			DEVCB_NULL,
			DEVCB_DEVICE_LINE("pit8253", pit8253_clk0_w)
		}
	}
};

READ8_MEMBER(pp01_state::pp01_8255_porta_r)
{
	return m_video_scroll;
}
WRITE8_MEMBER(pp01_state::pp01_8255_porta_w)
{
	m_video_scroll = data;
}

READ8_MEMBER(pp01_state::pp01_8255_portb_r)
{
	static const char *const keynames[] = {
		"LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7",
		"LINE8", "LINE9", "LINEA", "LINEB", "LINEC", "LINED", "LINEE", "LINEF"
	};

	return (machine().root_device().ioport(keynames[m_key_line])->read() & 0x3F) | (machine().root_device().ioport("LINEALL")->read() & 0xC0);
}
WRITE8_MEMBER(pp01_state::pp01_8255_portb_w)
{
	//logerror("pp01_8255_portb_w %02x\n",data);

}

WRITE8_MEMBER(pp01_state::pp01_8255_portc_w)
{
	m_key_line = data & 0x0f;
}

READ8_MEMBER(pp01_state::pp01_8255_portc_r)
{
	return 0xff;
}



I8255A_INTERFACE( pp01_ppi8255_interface )
{
	DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_porta_r),
	DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_porta_w),
	DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_portb_r),
	DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_portb_w),
	DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_portc_r),
	DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_portc_w)
};