1 // license:BSD-3-Clause
2 // copyright-holders:Patrick Mackinlay
3
4 /*
5 * An emulation of systems based on the Jazz computer architecture, originally
6 * developed by Microsoft. Specific systems which implemented this architecture
7 * include the MIPS Magnum/Millenium 4000 and Olivetti M700-10.
8 *
9 * References:
10 *
11 * https://www.linux-mips.org/wiki/Jazz
12 * http://gunkies.org/wiki/MIPS_Magnum
13 * http://www.sensi.org/~alec/mips/mips-history.html
14 *
15 * TODO
16 * - big-endian support for RISC/os
17 * - EISA bus and slots
18 * - slotify and improve graphics board
19 * - other models/variants
20 * - sound and other loose ends
21 *
22 * Unconfirmed parts lists from ARCSystem reference design (which appears to
23 * be very similar or identical to the Jazz system) taken from:
24 * https://www.linux-mips.org/archives/riscy/1993-12/msg00013.html
25 *
26 * Ref Part Function
27 *
28 * System board:
29 *
30 * Dallas DS1287 RTC and NVRAM
31 * Dallas DS1225Y 8k non-volatile SRAM
32 * WD16C552 Dual serial and parallel port controller
33 * Intel N82077A Floppy drive controller
34 * National DP83932BFV Ethernet controller
35 * Intel 82358 EISA Bus Controller
36 * Intel 82357 EISA Integrated System Peripheral (ISP)
37 * Intel 82352 x 2 EISA Bus Buffer (EBB)
38 * Emulex FAS216 SCSI controller
39 * 27C01 128k EPROM
40 * 28F020 256k flash memory
41 * NEC μPD31432 ARC address path ASIC
42 * NEC μPD31431 x 2 ARC data path ASIC
43 * NEC μPD30400 R4000PC/50 CPU
44 *
45 * Audio board:
46 *
47 * Crystal CS4215 Audio codec
48 * Altera FPGA x 4 Audio DMA
49 *
50 * Video board:
51 *
52 * 27C010 128k EPROM
53 * IMS G364-11S Video controller
54 * NEC μPD42274V-80 x 16 256kx4 VRAM (2MiB)
55 */
56
57 #include "emu.h"
58
59 #include "cpu/mips/r4000.h"
60
61 // memory
62 #include "machine/ram.h"
63 #include "machine/nvram.h"
64 #include "machine/28fxxx.h"
65
66 // various hardware
67 #include "machine/mct_adr.h"
68 #include "machine/dp83932c.h"
69 #include "machine/mc146818.h"
70 #include "machine/ins8250.h"
71 #include "machine/ncr5390.h"
72 #include "machine/upd765.h"
73 #include "machine/at_keybc.h"
74 #include "machine/pc_lpt.h"
75 #include "machine/i82357.h"
76
77 // video
78 #include "screen.h"
79 #include "video/ims_cvc.h"
80
81 // audio
82 #include "sound/spkrdev.h"
83 #include "speaker.h"
84
85 // busses and connectors
86 #include "machine/nscsi_bus.h"
87 #include "bus/nscsi/cd.h"
88 #include "bus/nscsi/hd.h"
89 #include "bus/rs232/rs232.h"
90 #include "bus/pc_kbd/pc_kbdc.h"
91 #include "bus/pc_kbd/keyboards.h"
92
93 #include "imagedev/floppy.h"
94 #include "formats/pc_dsk.h"
95 #include "softlist.h"
96
97 #include "debugger.h"
98
99 #include "jazz.lh"
100
101 #define VERBOSE 0
102 #include "logmacro.h"
103
104 namespace {
105
106 class jazz_state : public driver_device
107 {
108 public:
jazz_state(const machine_config & mconfig,device_type type,const char * tag)109 jazz_state(const machine_config &mconfig, device_type type, const char *tag)
110 : driver_device(mconfig, type, tag)
111 , m_cpu(*this, "cpu")
112 , m_ram(*this, "ram")
113 , m_vram(*this, "vram")
114 , m_mct_adr(*this, "mct_adr")
115 , m_scsibus(*this, "scsi")
116 , m_scsi(*this, "scsi:7:ncr53c94")
117 , m_fdc(*this, "fdc")
118 , m_rtc(*this, "rtc")
119 , m_nvram(*this, "nvram")
120 , m_flash(*this, "flash")
121 , m_kbdc(*this, "kbdc")
122 , m_net(*this, "net")
123 , m_screen(*this, "screen")
124 , m_cvc(*this, "g364")
125 , m_ace(*this, "ace%u", 0)
126 , m_lpt(*this, "lpt")
127 , m_isp(*this, "isp")
128 , m_buzzer(*this, "buzzer")
129 , m_softlist(*this, "softlist")
130 , m_led(*this, "led0")
131 {
132 }
133
134 protected:
135 // driver_device overrides
136 virtual void machine_start() override;
137 virtual void machine_reset() override;
138
139 // address maps
140 void cpu_map(address_map &map);
141 void mct_map(address_map &map);
142
143 // machine config
144 void jazz(machine_config &config);
145
146 void led_w(u8 data);
147
148 public:
149 void mmr4000be(machine_config &config);
150 void mmr4000le(machine_config &config);
151
152 void init_common();
153
154 DECLARE_FLOPPY_FORMATS(floppy_formats);
155
156 protected:
157 // devices
158 required_device<r4000_device> m_cpu;
159 required_device<ram_device> m_ram;
160 required_device<ram_device> m_vram;
161 required_device<mct_adr_device> m_mct_adr;
162 required_device<nscsi_bus_device> m_scsibus;
163 required_device<ncr53c94_device> m_scsi;
164 required_device<n82077aa_device> m_fdc;
165 required_device<mc146818_device> m_rtc;
166 required_device<nvram_device> m_nvram;
167 required_device<amd_28f020_device> m_flash;
168 required_device<ps2_keyboard_controller_device> m_kbdc;
169 required_device<dp83932c_device> m_net;
170 required_device<screen_device> m_screen;
171 required_device<g364_device> m_cvc;
172 required_device_array<ns16550_device, 2> m_ace;
173 required_device<pc_lpt_device> m_lpt;
174 required_device<i82357_device> m_isp;
175 required_device<speaker_sound_device> m_buzzer;
176 required_device<software_list_device> m_softlist;
177
178 output_finder<> m_led;
179 };
180
machine_start()181 void jazz_state::machine_start()
182 {
183 m_led.resolve();
184 }
185
machine_reset()186 void jazz_state::machine_reset()
187 {
188 // HACK: make sure the RTC is running
189 m_rtc->write_direct(0x0a, 0x20);
190 }
191
init_common()192 void jazz_state::init_common()
193 {
194 // map the configured ram and vram
195 m_mct_adr->space(0).install_ram(0x00000000, 0x00000000 | m_ram->mask(), m_ram->pointer());
196 m_mct_adr->space(0).install_ram(0x40000000, 0x40000000 | m_vram->mask(), m_vram->pointer());
197 }
198
cpu_map(address_map & map)199 void jazz_state::cpu_map(address_map &map)
200 {
201 map(0x00000000, 0xffffffff).rw(m_mct_adr, FUNC(mct_adr_device::r4k_r), FUNC(mct_adr_device::r4k_w));
202 }
203
mct_map(address_map & map)204 void jazz_state::mct_map(address_map &map)
205 {
206 map(0x1fc00000, 0x1fc3ffff).r(m_flash, FUNC(amd_28f020_device::read));
207
208 // VDR1
209 //map(0x60000000, 0x60001fff).m(m_cvc, FUNC(g364_device::map));
210 //map(0x60010000, 0x60010000); // id (r/w)
211 //map(0x60020000, 0x60020000); // reset
212
213 // VDR1F "Fission"
214 map(0x60000000, 0x6007ffff).rom().region("graphics", 0);
215 map(0x60080000, 0x60081fff).m(m_cvc, FUNC(g364_device::map));
216 map(0x60100000, 0x60100000).lw8([this] (u8 data) { m_cvc->set_swapped(ENDIANNESS_NATIVE == ENDIANNESS_BIG); }, "little_endian");
217 map(0x60102000, 0x60102000).lw8([this] (u8 data) { m_cvc->set_swapped(ENDIANNESS_NATIVE == ENDIANNESS_LITTLE); }, "big_endian");
218 map(0x60180000, 0x60180000).lw8([this] (u8 data) { m_cvc->reset(); }, "g364_reset");
219 //map(0x60182000, 0x60182000); // TODO: monitor
220
221 // VDR2
222 //map(0x60000000, 0x60000fff).m(m_cvc, FUNC(g300_device::map));
223 //map(0x60008000, 0x60008fff).m(m_cursor, FUNC(bt431_device::map)).umask32(0x000000ff);
224
225 map(0x80000000, 0x80000fff).m(m_mct_adr, FUNC(mct_adr_device::map));
226
227 map(0x80001000, 0x800010ff).m(m_net, FUNC(dp83932c_device::map)).umask32(0x0000ffff);
228 map(0x80002000, 0x8000200f).m(m_scsi, FUNC(ncr53c94_device::map));
229 map(0x80003000, 0x8000300f).m(m_fdc, FUNC(n82077aa_device::map));
230
231 // LE: only reads 4000
232 // BE: read 400d, write 400d, write 400c
233 map(0x80004000, 0x8000400f).lrw8(
234 NAME([this] (offs_t offset) { return m_rtc->read(1); }),
235 NAME([this] (offs_t offset, u8 data) { m_rtc->write(1, data); }));
236 map(0x80005000, 0x80005000).rw(m_kbdc, FUNC(ps2_keyboard_controller_device::data_r), FUNC(ps2_keyboard_controller_device::data_w));
237 map(0x80005001, 0x80005001).rw(m_kbdc, FUNC(ps2_keyboard_controller_device::status_r), FUNC(ps2_keyboard_controller_device::command_w));
238 map(0x80006000, 0x80006007).rw(m_ace[0], FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w));
239 map(0x80007000, 0x80007007).rw(m_ace[1], FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w));
240 map(0x80008000, 0x80008003).rw(m_lpt, FUNC(pc_lpt_device::read), FUNC(pc_lpt_device::write));
241 map(0x80009000, 0x8000afff).ram().share("nvram");
242 map(0x8000b000, 0x8000b007).lr8(
243 [] (offs_t offset)
244 {
245 // mac address and checksum
246 static u8 const mac[] = { 0x00, 0x00, 0x6b, 0x12, 0x34, 0x56, 0x00, 0xf7 };
247
248 return mac[offset];
249 },
250 "mac");
251
252 //map(0x8000c000, 0x8000cfff) // sound
253 //map(0x8000d000, 0x8000dfff).noprw(); // dummy dma device?
254 map(0x8000d600, 0x8000d607).nopw();
255
256 map(0x8000f000, 0x8000f000).w(FUNC(jazz_state::led_w));
257
258 // lots of byte data written to 800
259 //map(0x800e0000, 0x800fffff).m() // dram config
260
261 map(0x90000000, 0x90ffffff).m(m_isp, FUNC(i82357_device::map));
262
263 // HACK: empty eisa slots
264 map(0x90001c80, 0x90001c87).ram();
265 map(0x90002c80, 0x90002c87).ram();
266 map(0x90003c80, 0x90003c87).ram();
267 map(0x90004c80, 0x90004c87).ram();
268
269 //map(0x91000000, 0x91ffffff).m();
270 //map(0x92000000, 0x92ffffff).m(); // EISA I/O ports?
271 //map(0x93000000, 0x93ffffff).m(); // EISA memory
272
273 map(0xf0000000, 0xf0000001).r(m_mct_adr, FUNC(mct_adr_device::isr_r));
274 map(0xf0000002, 0xf0000003).rw(m_mct_adr, FUNC(mct_adr_device::imr_r), FUNC(mct_adr_device::imr_w));
275
276 map(0xfff00000, 0xfff3ffff).r(m_flash, FUNC(amd_28f020_device::read)); // mirror?
277 }
278
jazz_scsi_devices(device_slot_interface & device)279 static void jazz_scsi_devices(device_slot_interface &device)
280 {
281 device.option_add("harddisk", NSCSI_HARDDISK);
282 device.option_add("cdrom", NSCSI_CDROM);
283 }
284
FLOPPY_FORMATS_MEMBER(jazz_state::floppy_formats)285 FLOPPY_FORMATS_MEMBER(jazz_state::floppy_formats)
286 FLOPPY_PC_FORMAT
287 FLOPPY_FORMATS_END
288
289 void jazz_state::jazz(machine_config &config)
290 {
291 // FIXME: slow the cpu clock to get past session manager bugcheck
292 R4000(config, m_cpu, 50_MHz_XTAL / 5);
293 m_cpu->set_addrmap(0, &jazz_state::cpu_map);
294
295 RAM(config, m_ram);
296 m_ram->set_default_size("16M");
297 m_ram->set_extra_options("32M,64M,128M,256M");
298 m_ram->set_default_value(0);
299
300 RAM(config, m_vram);
301 m_vram->set_default_size("2M");
302 m_vram->set_default_value(0);
303
304 // local bus dma, timer and interrupt controller
305 MCT_ADR(config, m_mct_adr, 0);
306 m_mct_adr->set_addrmap(0, &jazz_state::mct_map);
307 m_mct_adr->out_int_dma_cb().set_inputline(m_cpu, INPUT_LINE_IRQ0);
308 m_mct_adr->out_int_device_cb().set_inputline(m_cpu, INPUT_LINE_IRQ1);
309 m_mct_adr->out_int_timer_cb().set_inputline(m_cpu, INPUT_LINE_IRQ4);
310 m_mct_adr->eisa_iack_cb().set(m_isp, FUNC(i82357_device::eisa_irq_ack));
311
312 // scsi bus and devices
313 NSCSI_BUS(config, m_scsibus);
314 NSCSI_CONNECTOR(config, "scsi:0", jazz_scsi_devices, "harddisk");
315 NSCSI_CONNECTOR(config, "scsi:1", jazz_scsi_devices, nullptr);
316 NSCSI_CONNECTOR(config, "scsi:2", jazz_scsi_devices, nullptr);
317 NSCSI_CONNECTOR(config, "scsi:3", jazz_scsi_devices, nullptr);
318 NSCSI_CONNECTOR(config, "scsi:4", jazz_scsi_devices, nullptr);
319 NSCSI_CONNECTOR(config, "scsi:5", jazz_scsi_devices, nullptr);
320 NSCSI_CONNECTOR(config, "scsi:6", jazz_scsi_devices, "cdrom");
321
322 // scsi host adapter
323 NSCSI_CONNECTOR(config, "scsi:7").option_set("ncr53c94", NCR53C94).clock(24_MHz_XTAL).machine_config(
324 [this] (device_t *device)
325 {
326 ncr53c94_device &adapter = downcast<ncr53c94_device &>(*device);
327
328 adapter.irq_handler_cb().set(m_mct_adr, FUNC(mct_adr_device::irq<5>));
329 adapter.drq_handler_cb().set(m_mct_adr, FUNC(mct_adr_device::drq<0>));
330
331 subdevice<mct_adr_device>(":mct_adr")->dma_r_cb<0>().set(adapter, FUNC(ncr53c94_device::dma_r));
332 subdevice<mct_adr_device>(":mct_adr")->dma_w_cb<0>().set(adapter, FUNC(ncr53c94_device::dma_w));
333 });
334
335 // floppy controller and drive
336 N82077AA(config, m_fdc, 24_MHz_XTAL);
337 m_fdc->intrq_wr_callback().set(m_mct_adr, FUNC(mct_adr_device::irq<1>));
338 m_fdc->drq_wr_callback().set(m_mct_adr, FUNC(mct_adr_device::drq<1>));
339 FLOPPY_CONNECTOR(config, "fdc:0", "35hd", FLOPPY_35_HD, true, jazz_state::floppy_formats).enable_sound(false);
340 m_mct_adr->dma_r_cb<1>().set(m_fdc, FUNC(n82077aa_device::dma_r));
341 m_mct_adr->dma_w_cb<1>().set(m_fdc, FUNC(n82077aa_device::dma_w));
342
343 MC146818(config, m_rtc, 32.768_kHz_XTAL);
344 m_rtc->set_epoch(1980);
345
346 NVRAM(config, m_nvram, nvram_device::DEFAULT_ALL_0);
347
348 AMD_28F020(config, m_flash);
349
350 // pc keyboard connector
351 pc_kbdc_device &kbd_con(PC_KBDC(config, "kbd_con", 0));
352 kbd_con.out_clock_cb().set(m_kbdc, FUNC(ps2_keyboard_controller_device::kbd_clk_w));
353 kbd_con.out_data_cb().set(m_kbdc, FUNC(ps2_keyboard_controller_device::kbd_data_w));
354
355 // keyboard port
356 pc_kbdc_slot_device &kbd(PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_MICROSOFT_NATURAL));
357 kbd.set_pc_kbdc_slot(&kbd_con);
358
359 // auxiliary connector
360 pc_kbdc_device &aux_con(PC_KBDC(config, "aux_con", 0));
361 aux_con.out_clock_cb().set(m_kbdc, FUNC(ps2_keyboard_controller_device::aux_clk_w));
362 aux_con.out_data_cb().set(m_kbdc, FUNC(ps2_keyboard_controller_device::aux_data_w));
363
364 // auxiliary port
365 pc_kbdc_slot_device &aux(PC_KBDC_SLOT(config, "aux", ps2_mice, STR_HLE_PS2_MOUSE));
366 aux.set_pc_kbdc_slot(&aux_con);
367
368 // keyboard controller
369 PS2_KEYBOARD_CONTROLLER(config, m_kbdc, 12_MHz_XTAL);
370 // FIXME: reset is probably routed through the MCT-ADR
371 m_kbdc->hot_res().set([this] (int state) { machine().schedule_soft_reset(); });
372 m_kbdc->kbd_clk().set(kbd_con, FUNC(pc_kbdc_device::clock_write_from_mb));
373 m_kbdc->kbd_data().set(kbd_con, FUNC(pc_kbdc_device::data_write_from_mb));
374 m_kbdc->kbd_irq().set(m_mct_adr, FUNC(mct_adr_device::irq<6>));
375 m_kbdc->aux_clk().set(aux_con, FUNC(pc_kbdc_device::clock_write_from_mb));
376 m_kbdc->aux_data().set(aux_con, FUNC(pc_kbdc_device::data_write_from_mb));
377 m_kbdc->aux_irq().set(m_mct_adr, FUNC(mct_adr_device::irq<7>));
378
379 SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
380 m_screen->set_raw(78643200, 1280, 0, 1280, 1024, 0, 1024);
381 m_screen->set_screen_update(m_cvc, FUNC(g364_device::screen_update));
382 m_screen->screen_vblank().set(m_mct_adr, FUNC(mct_adr_device::irq<3>)); // maybe?
383
384 G364(config, m_cvc, 5_MHz_XTAL); // FIXME: guessed clock
385 m_cvc->set_screen(m_screen);
386 m_cvc->set_vram(m_vram);
387
388 // WD16C552 (two 16550 + pc_lpt)
389 NS16550(config, m_ace[0], 4233600);
390 rs232_port_device &serial0(RS232_PORT(config, "serial0", default_rs232_devices, nullptr));
391
392 m_ace[0]->out_dtr_callback().set(serial0, FUNC(rs232_port_device::write_dtr));
393 m_ace[0]->out_rts_callback().set(serial0, FUNC(rs232_port_device::write_rts));
394 m_ace[0]->out_tx_callback().set(serial0, FUNC(rs232_port_device::write_txd));
395 m_ace[0]->out_int_callback().set(m_mct_adr, FUNC(mct_adr_device::irq<8>));
396
397 serial0.cts_handler().set(m_ace[0], FUNC(ns16550_device::cts_w));
398 serial0.dcd_handler().set(m_ace[0], FUNC(ns16550_device::dcd_w));
399 serial0.dsr_handler().set(m_ace[0], FUNC(ns16550_device::dsr_w));
400 serial0.ri_handler().set(m_ace[0], FUNC(ns16550_device::ri_w));
401 serial0.rxd_handler().set(m_ace[0], FUNC(ns16550_device::rx_w));
402
403 NS16550(config, m_ace[1], 8_MHz_XTAL);
404 rs232_port_device &serial1(RS232_PORT(config, "serial1", default_rs232_devices, nullptr));
405
406 m_ace[1]->out_dtr_callback().set(serial1, FUNC(rs232_port_device::write_dtr));
407 m_ace[1]->out_rts_callback().set(serial1, FUNC(rs232_port_device::write_rts));
408 m_ace[1]->out_tx_callback().set(serial1, FUNC(rs232_port_device::write_txd));
409 m_ace[1]->out_int_callback().set(m_mct_adr, FUNC(mct_adr_device::irq<9>));
410
411 serial1.cts_handler().set(m_ace[1], FUNC(ns16550_device::cts_w));
412 serial1.dcd_handler().set(m_ace[1], FUNC(ns16550_device::dcd_w));
413 serial1.dsr_handler().set(m_ace[1], FUNC(ns16550_device::dsr_w));
414 serial1.ri_handler().set(m_ace[1], FUNC(ns16550_device::ri_w));
415 serial1.rxd_handler().set(m_ace[1], FUNC(ns16550_device::rx_w));
416
417 PC_LPT(config, m_lpt, 0);
418 m_lpt->irq_handler().set(m_mct_adr, FUNC(mct_adr_device::irq<0>));
419
420 // TODO: sound, interrupt 2, drq 2(l) & 3(r)
421
422 // buzzer
423 SPEAKER(config, "mono").front_center();
424 SPEAKER_SOUND(config, m_buzzer);
425 m_buzzer->add_route(ALL_OUTPUTS, "mono", 0.50);
426
427 DP83932C(config, m_net, 20_MHz_XTAL);
428 m_net->out_int_cb().set(m_mct_adr, FUNC(mct_adr_device::irq<4>));
429 m_net->set_bus(m_mct_adr, 1);
430
431 I82357(config, m_isp, 14.318181_MHz_XTAL);
432 m_isp->out_rtc_cb().set(m_rtc, FUNC(mc146818_device::write));
433 m_isp->out_int_cb().set_inputline(m_cpu, INPUT_LINE_IRQ2);
434 m_isp->out_nmi_cb().set_inputline(m_cpu, INPUT_LINE_IRQ3);
435 m_isp->out_spkr_cb().set(m_buzzer, FUNC(speaker_sound_device::level_w));
436
437 // TODO: 4 EISA slots
438
439 config.set_default_layout(layout_jazz);
440
441 // software list
442 SOFTWARE_LIST(config, m_softlist).set_original("jazz");
443 }
444
led_w(u8 data)445 void jazz_state::led_w(u8 data)
446 {
447 // 7-segment diagnostic led
448 static u8 const patterns[16] =
449 {
450 // test output
451 0x3f, // mct-adr 0
452 0x06, // network 1
453 0x5b, // scsi 2
454 0x4f, // floppy 3
455 0x66, // isp/rtc 4
456 0x6d, // keyboard 5
457 0x7d, // serial 6
458 0x07, // nvram 7
459 0x7f, // 8?
460 0x6f, // video 9
461 0x77, // memory A
462 0x40, // -
463 0x39, // flash C
464 0x00, // (blank)
465 0x79, // cpu E
466 0x71, // F?
467 };
468
469 m_led = patterns[data & 0xf] | (BIT(data, 4) ? 0x80 : 0);
470 }
471
mmr4000be(machine_config & config)472 void jazz_state::mmr4000be(machine_config &config)
473 {
474 jazz(config);
475
476 m_cpu->set_config(r4000_device::CONFIG_BE, r4000_device::CONFIG_BE);
477 }
478
mmr4000le(machine_config & config)479 void jazz_state::mmr4000le(machine_config &config)
480 {
481 jazz(config);
482
483 m_cpu->set_config(0, r4000_device::CONFIG_BE);
484 }
485
486 ROM_START(mmr4000be)
487 ROM_REGION32_LE(0x40000, "flash", 0)
488 ROM_SYSTEM_BIOS(0, "riscos", "R4000 RISC/os PROM")
489 ROMX_LOAD("riscos.bin", 0x00000, 0x40000, CRC(cea6bc8f) SHA1(3e47b4ad5d1a0c7aac649e6aef3df1bf86fc938b), ROM_BIOS(0))
490
491 ROM_REGION32_LE(0x800000, "graphics", 0)
492 ROM_LOAD64_BYTE("mips_g364.bin", 0x000000, 0x020000, CRC(be6a726e) SHA1(225c198f6a7f8445dac3de052ecceecbb5be6bc7) BAD_DUMP)
493 ROM_END
494
495 ROM_START(mmr4000le)
496 ROM_REGION32_LE(0x40000, "flash", 0)
497 ROM_SYSTEM_BIOS(0, "ntprom", "R4000 Windows NT PROM")
498 ROMX_LOAD("ntprom.bin", 0x00000, 0x40000, CRC(d91018d7) SHA1(316de17820192c89b8ee6d9936ab8364a739ca53), ROM_BIOS(0))
499
500 ROM_REGION32_LE(0x800000, "graphics", 0)
501 // Jazz G300 (8.125MHz video clock, Bt431)
502 //ROM_LOAD64_BYTE("jazz_g300.bin", 0x00, 0x40, CRC(258eb00a) SHA1(6e3fd0272957524de82e7042d6e36aca492c4d26) BAD_DUMP)
503 // Jazz G364 (8.125MHz video clock)
504 //ROM_LOAD64_BYTE("jazz_g364.bin", 0x000000, 0x020000, CRC(495fb417) SHA1(c341f3d498822ec1ee07a70076d7bbbf7aa60cb5) BAD_DUMP)
505 // Jazz VXL (aka Jaguar, part number 09-00184, Bt484 or Bt485)
506 //ROM_LOAD64_BYTE("jazz_vxl.bin", 0x000000, 0x010000, CRC(8edf1a62) SHA1(7750833eac0708ee79f01f36523554d29a094692) BAD_DUMP)
507 // MIPS G364 (5MHz video clock, part number 09-00176)
508 ROM_LOAD64_BYTE("mips_g364.bin", 0x000000, 0x020000, CRC(be6a726e) SHA1(225c198f6a7f8445dac3de052ecceecbb5be6bc7) BAD_DUMP)
509 ROM_END
510
511 }
512
513 /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
514 COMP(1992, mmr4000be, 0, 0, mmr4000be, 0, jazz_state, init_common, "MIPS", "Magnum R4000 (be)", MACHINE_NO_SOUND)
515 COMP(1992, mmr4000le, 0, 0, mmr4000le, 0, jazz_state, init_common, "MIPS", "Magnum R4000 (le)", MACHINE_NO_SOUND)
516