1 // license:BSD-3-Clause
2 // copyright-holders:Miodrag Milanovic, Robbbert
3 /********************************************************************************
4
5 EC-65 (also known as Octopus)
6
7 2009-07-16 Initial driver.
8
9 No sound. Storage is floppy disk. No software has been found.
10 Modules are constructed on separate eurocards and plug into a common backplane.
11
12 EC65 - Disk controller module uses 6821 and 6850. Needs to be emulated.
13 When done, .b to boot disk
14
15 EC65K - To be developed from scratch. Similar design to EC65, but 6522
16 replaced with 6821. Contains extra RTC. Particulars of video and
17 universal FDC not known.
18 - Extra 256KB card
19 - Extra Z80 card with ROM, 2x PIA, 64 or 256KB RAM, for CP/M use.
20 - Currently runs into the weeds soon after start, at F070
21
22
23 ********************************************************************************/
24
25 #include "emu.h"
26 #include "cpu/m6502/m6502.h"
27 #include "cpu/g65816/g65816.h"
28 #include "video/mc6845.h"
29 #include "machine/6821pia.h"
30 #include "machine/6522via.h"
31 #include "machine/mos6551.h"
32 #include "machine/6850acia.h"
33 #include "machine/keyboard.h"
34 #include "machine/mc146818.h"
35 #include "emupal.h"
36 #include "screen.h"
37
38
39 class ec65_common : public driver_device
40 {
41 public:
ec65_common(const machine_config & mconfig,device_type type,const char * tag)42 ec65_common(const machine_config &mconfig, device_type type, const char *tag)
43 : driver_device(mconfig, type, tag)
44 , m_vram(*this, "videoram")
45 , m_p_chargen(*this, "chargen")
46 , m_maincpu(*this, "maincpu")
47 , m_palette(*this, "palette")
48 { }
49
50 MC6845_UPDATE_ROW(crtc_update_row);
51
52 protected:
53 required_shared_ptr<u8> m_vram;
54 required_region_ptr<u8> m_p_chargen;
55 required_device<cpu_device> m_maincpu;
56 required_device<palette_device> m_palette;
57
58 };
59
60 class ec65_state : public ec65_common
61 {
62 public:
ec65_state(const machine_config & mconfig,device_type type,const char * tag)63 ec65_state(const machine_config &mconfig, device_type type, const char *tag)
64 : ec65_common(mconfig, type, tag)
65 , m_via0(*this, "via0")
66 , m_via1(*this, "via1")
67 { }
68
69 void ec65(machine_config &config);
70
71 private:
72 void machine_reset() override;
73 void ec65_mem(address_map &map);
74 void kbd_put(u8 data);
75 required_device<via6522_device> m_via0;
76 required_device<via6522_device> m_via1;
77 };
78
79 class ec65k_state : public ec65_common
80 {
81 public:
ec65k_state(const machine_config & mconfig,device_type type,const char * tag)82 ec65k_state(const machine_config &mconfig, device_type type, const char *tag)
83 : ec65_common(mconfig, type, tag)
84 , m_rtc(*this, "rtc")
85 , m_pia0(*this, "pia0")
86 , m_pia1(*this, "pia1")
87 { }
88
89 void ec65k(machine_config &config);
90
91 private:
92 void ec65k_mem(address_map &map);
93 void kbd_put(u8 data);
94 required_device<mc146818_device> m_rtc;
95 required_device<pia6821_device> m_pia0;
96 required_device<pia6821_device> m_pia1;
97 };
98
ec65_mem(address_map & map)99 void ec65_state::ec65_mem(address_map &map)
100 {
101 map.unmap_value_high();
102 map(0x0000, 0xdfff).ram();
103 map(0xe000, 0xe003).rw("pia", FUNC(pia6821_device::read), FUNC(pia6821_device::write)); // FDC card
104 map(0xe010, 0xe011).rw("fdc", FUNC(acia6850_device::read), FUNC(acia6850_device::write)); // FDC card
105 map(0xe100, 0xe10f).m(m_via0, FUNC(via6522_device::map));
106 map(0xe110, 0xe11f).m(m_via1, FUNC(via6522_device::map));
107 map(0xe130, 0xe133).rw("uart", FUNC(mos6551_device::read), FUNC(mos6551_device::write));
108 map(0xe140, 0xe140).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
109 map(0xe141, 0xe141).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
110 map(0xe400, 0xe7ff).ram(); // 1KB on-board RAM
111 map(0xe800, 0xefff).ram().share("videoram");
112 map(0xf000, 0xffff).rom().region("maincpu",0);
113 }
114
ec65k_mem(address_map & map)115 void ec65k_state::ec65k_mem(address_map &map)
116 {
117 map.unmap_value_high();
118 map(0x000000, 0x00dfff).ram(); // D000-DFFF = System RAM
119 map(0x00e000, 0x00e003).rw("pia", FUNC(pia6821_device::read), FUNC(pia6821_device::write)); // old FDC card
120 map(0x00e010, 0x00e011).rw("fdc", FUNC(acia6850_device::read), FUNC(acia6850_device::write)); // old FDC card
121 //map(0x00e150, colorator CRTC (no info)
122 //map(0x00e280, basicode interface (no info)
123 //map(0x00e300, Z80 board
124 map(0x00e400, 0x00e403).rw(m_pia0, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); // PIA0 porta=keyboard; portb=parallel port
125 map(0x00e410, 0x00e413).rw("uart", FUNC(mos6551_device::read), FUNC(mos6551_device::write));
126 map(0x00e420, 0x00e423).rw(m_pia1, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); // PIA1 porta=centronics control; portb=centronics data
127 map(0x00e430, 0x00e430).lw8(NAME([this] (u8 data) { m_rtc->write(0, data); })); // RTC 146818 - has battery backup
128 map(0x00e431, 0x00e431).lr8(NAME([this] () { return m_rtc->read(1); }));
129 map(0x00e431, 0x00e431).lw8(NAME([this] (u8 data) { m_rtc->write(1, data); }));
130 //map(0x00e500, 0x00e5ff) universal disk controller (no info)
131 map(0x00e800, 0x00efff).ram().share("videoram");
132 map(0x00f000, 0x00ffff).rom().region("maincpu",0);
133 map(0x010000, 0x0fffff).ram();
134 }
135
136 /* Input ports */
INPUT_PORTS_START(ec65)137 static INPUT_PORTS_START( ec65 )
138 INPUT_PORTS_END
139
140 void ec65_state::kbd_put(u8 data)
141 {
142 if (data)
143 {
144 m_via0->write_pa(data);
145 m_via0->write_ca1(1);
146 m_via0->write_ca1(0);
147 }
148 }
149
kbd_put(u8 data)150 void ec65k_state::kbd_put(u8 data)
151 {
152 if (data)
153 {
154 m_pia0->porta_w(data);
155 m_pia0->ca1_w(1);
156 m_pia0->ca1_w(0);
157 }
158 }
159
machine_reset()160 void ec65_state::machine_reset()
161 {
162 m_via1->write_pb(0xff);
163 }
164
MC6845_UPDATE_ROW(ec65_common::crtc_update_row)165 MC6845_UPDATE_ROW( ec65_common::crtc_update_row )
166 {
167 rgb_t const *const palette = m_palette->palette()->entry_list_raw();
168 u32 *p = &bitmap.pix(y);
169
170 for (u16 x = 0; x < x_count; x++)
171 {
172 u8 const inv = (x == cursor_x) ? 0xff : 0;
173 u16 const mem = (ma + x) & 0x7ff;
174 u8 const chr = m_vram[mem];
175
176 /* get pattern of pixels for that character scanline */
177 u8 const gfx = m_p_chargen[(chr<<4) | (ra & 0x0f)] ^ inv;
178
179 /* Display a scanline of a character */
180 *p++ = palette[BIT(gfx, 7)];
181 *p++ = palette[BIT(gfx, 6)];
182 *p++ = palette[BIT(gfx, 5)];
183 *p++ = palette[BIT(gfx, 4)];
184 *p++ = palette[BIT(gfx, 3)];
185 *p++ = palette[BIT(gfx, 2)];
186 *p++ = palette[BIT(gfx, 1)];
187 *p++ = palette[BIT(gfx, 0)];
188 }
189 }
190
191 /* F4 Character Displayer */
192 static const gfx_layout charlayout =
193 {
194 8, 8, /* 8 x 8 characters */
195 256, /* 256 characters */
196 1, /* 1 bits per pixel */
197 { 0 }, /* no bitplanes */
198 /* x offsets */
199 { 0, 1, 2, 3, 4, 5, 6, 7 },
200 /* y offsets */
201 { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
202 8*16 /* every char takes 16 bytes */
203 };
204
205 static GFXDECODE_START( gfx_ec65 )
206 GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 )
207 GFXDECODE_END
208
ec65(machine_config & config)209 void ec65_state::ec65(machine_config &config)
210 {
211 /* basic machine hardware */
212 M6502(config, m_maincpu, XTAL(4'000'000) / 4);
213 m_maincpu->set_addrmap(AS_PROGRAM, &ec65_state::ec65_mem);
214
215 /* video hardware */
216 screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
217 screen.set_refresh_hz(60);
218 screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
219 screen.set_size(640, 200);
220 screen.set_visarea_full();
221 screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update));
222
223 GFXDECODE(config, "gfxdecode", m_palette, gfx_ec65);
224 PALETTE(config, "palette", palette_device::MONOCHROME);
225
226 mc6845_device &crtc(MC6845(config, "crtc", XTAL(16'000'000) / 8));
227 crtc.set_screen("screen");
228 crtc.set_show_border_area(false);
229 crtc.set_char_width(8); /*?*/
230 crtc.set_update_row_callback(FUNC(ec65_state::crtc_update_row));
231
232 /* devices */
233 ACIA6850(config, "fdc", 0); // used as a FDC on separate card
234 PIA6821(config, "pia", 0); // assists 6850
235
236 VIA6522(config, m_via0, XTAL(4'000'000) / 4);
237
238 VIA6522(config, m_via1, XTAL(4'000'000) / 4);
239
240 mos6551_device &uart(MOS6551(config, "uart", 0));
241 uart.set_xtal(XTAL(1'843'200));
242
243 generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0));
244 keyboard.set_keyboard_callback(FUNC(ec65_state::kbd_put));
245 }
246
ec65k(machine_config & config)247 void ec65k_state::ec65k(machine_config &config)
248 {
249 /* basic machine hardware */
250 g65816_device &maincpu(G65816(config, "maincpu", XTAL(4'000'000))); // can use 4,2 or 1 MHz
251 maincpu.set_addrmap(AS_PROGRAM, &ec65k_state::ec65k_mem);
252
253 /* video hardware */
254 screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
255 screen.set_refresh_hz(60);
256 screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
257 screen.set_size(640, 200);
258 screen.set_visarea_full();
259 screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update));
260
261 GFXDECODE(config, "gfxdecode", "palette", gfx_ec65);
262 PALETTE(config, "palette", palette_device::MONOCHROME);
263
264 mc6845_device &crtc(MC6845(config, "crtc", XTAL(16'000'000) / 8));
265 crtc.set_screen("screen");
266 crtc.set_show_border_area(false);
267 crtc.set_char_width(8); /*?*/
268 crtc.set_update_row_callback(FUNC(ec65k_state::crtc_update_row));
269
270 /* devices */
271 ACIA6850(config, "fdc", 0); // used as a FDC on separate card
272 PIA6821(config, "pia", 0); // assists 6850
273
274 MC146818(config, m_rtc, 32.768_kHz_XTAL);
275 //m_rtc->irq().set(FUNC(micronic_state::mc146818_irq)); Connects to common irq line used by below PIAs and UART
276
277 PIA6821(config, m_pia0, 0);
278 PIA6821(config, m_pia1, 0);
279
280 mos6551_device &uart(MOS6551(config, "uart", 0));
281 uart.set_xtal(XTAL(1'843'200));
282
283 generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0));
284 keyboard.set_keyboard_callback(FUNC(ec65k_state::kbd_put));
285 }
286
287 /* ROM definition */
288 ROM_START( ec65 )
289 ROM_REGION( 0x1000, "maincpu", 0 )
290 ROM_LOAD( "ec65.ic6", 0x0000, 0x1000, CRC(acd928ed) SHA1(e02a688a057ff77294717cf7b887425fed0b1153))
291
292 ROM_REGION( 0x1000, "chargen", 0 )
293 ROM_LOAD( "chargen.ic19", 0x0000, 0x1000, CRC(9b56a28d) SHA1(41c04fd9fb542c50287bc0e366358a61fc4b0cd4)) // Located on VDU card
294 ROM_END
295
296 ROM_START( ec65k )
297 ROM_REGION( 0x1000, "maincpu", 0 )
298 ROM_LOAD( "ec65k.ic19", 0x0000, 0x1000, CRC(5e5a890a) SHA1(daa006f2179fd156833e11c73b37881cafe5dede))
299
300 ROM_REGION( 0x1000, "chargen", 0 )
301 ROM_LOAD( "chargen.ic19", 0x0000, 0x1000, CRC(9b56a28d) SHA1(41c04fd9fb542c50287bc0e366358a61fc4b0cd4)) // Located on VDU card
302 ROM_END
303 /* Driver */
304
305 /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
306 COMP( 1985, ec65, 0, 0, ec65, ec65, ec65_state, empty_init, "Elektor", "EC-65", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
307 COMP( 1986, ec65k, ec65, 0, ec65k, ec65, ec65k_state, empty_init, "Elektor", "EC-65K", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
308