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|
// license:BSD-3-Clause
// copyright-holders:Patrick Mackinlay
/*
* An emulation of systems designed and manufactured by MIPS Computer Systems,
* all of which use MIPS R2000, R3000 or R6000 CPUs, and run the RISC/os
* operating system.
*
* This driver is intended to eventually cover the following models:
*
* Model Board CPU Clock Slots Disk Package Other
* M/500 R2300 R2000 5MHz VME ESDI
* M/800 R2600 R2000 8MHz VME ESDI
* M/1000 R2800 R2000 10MHz VME ESDI
* M/120-3 R2400? R2000 12MHz PC-AT SCSI Deskside aka Intrepid?
* M/120-5 R2400? R2000 16MHz PC-AT SCSI Deskside
* M/180 R2400
* M/2000-6 R3200 R3000 20MHz VMEx13 SMD Rack Cabinet
* M/2000-8 R3200 R3000 25MHz VMEx13 SMD Rack Cabinet
* RC2030 I2000 R2000 16MHz SCSI Desktop aka M/12, Jupiter
* RS2030 I2000 R2000 16MHz SCSI Desktop aka M/12, Jupiter
* RC3230 R3030 R3000 25MHz PC-ATx1 SCSI Desktop
* RS3230 R3030 R3000 25MHz PC-ATx1 SCSI Desktop aka M/20, Magnum 3000, Pizazz
* RC3240 R3000 20MHz PC-ATx4 SCSI Deskside M/120 with CPU-board upgrade
* RC3330 R3000 33MHz PC-AT SCSI Desktop
* RS3330 R3000 33MHz PC-AT SCSI Desktop
* RC3260 R3000 25MHz VMEx7 SCSI Pedestal
* RC3360 RB3133 R3000 33MHz VME SCSI Pedestal
* RC3370 RB3133
* RC6260 R6300 R6000 66MHz VME SCSI Pedestal
* RC6280 R6300 R6000 66MHz VMEx6 SMD Data Center
* RC6380-100 R6000x1 66MHz VME SMD Data Center
* RC6380-200 R6000x2 66MHz VME SMD Data Center
* RC6380-400 R6000x4 66MHz VME SMD Data Center
*
* Sources:
*
* http://www.umips.net/
* http://www.geekdot.com/the-mips-rs2030/
* http://www.jp.netbsd.org/ports/mipsco/models.html
*
* TODO (rx2030)
* - remaining iop interface
* - figure out the brcond0 signal
* - keyboard controller and keyboard
* - buzzer
*
* TODO (rx3230)
* - verify/complete address maps
* - idprom
* - rambo device
*
* Ref Part Function
*
* System board:
*
* MIPS R2000A Main CPU
* PACEMIPS PR2010A Floating point unit
* 33.3330 MHz crystal CPU clock
* DL15CC200
* DDU7F-25 Delay line (10 taps @ 2.5ns per tap)
* VLSI VL85C30-08PC Serial port controller
* ST Z8038AB1 FIO Parallel port controller
* 1.8432 MHz crystal Serial clock
* NEC D70216L-10 I/O processor
* Adaptec AIC-6250DL SCSI controller
* AMD AM7990DCB/80 Ethernet controller
* 20 MHz crystal
* 2VP5U9 DC/DC converter (Ethernet transceiver power?)
* WDC WD37C65BJW Floppy controller
* Intel P8742AH Keyboard controller
* Dallas DS1287 RTC and NVRAM
* buzzer Connected to keyboard controller?
*
* P4C164-25PC Cache RAM? (8Kx8, total 112KiB)
* U?-U? 14 parts
*
* 27C512 64K EPROM V50 IPL (64Kx8, total 256KiB)
* U139-U142 4 parts
*
* M5M4464 V50 RAM (64Kx4, total 128KiB)
* U164-U167 4 parts
*
* Video board:
* Idt75C458 256x24 Color RAMDAC
* Bt438KC Clock generator
* 108.180 MHz crystal
*
* D41264V-12 Video RAM (64Kx4, total 1280KiB)
* U?-U? 40 parts
*/
/*
* WIP notes
*
* status: loads RISC/os, but dies probably due to missing R2000A TLB
*
* V50 internal peripherals:
* base = 0xfe00
* serial (sula): fe00
* timer (tula): fe08
* int (iula): fe10
* dma (dula): fe20
*
* V50 IPL diagnostic routines
* NVRAM f8dc4
* Ethernet ID f8b58
* Parallel f8c5c
* Keyboard f4cbc
* SCC ec0fc
* Floppy ee3ea
* SCSI f426e
* LANCE f8f68
*
* V50 interrupts:
* intp1 <- SCU
* intp2 <- CPU interface
* intp3 <- SCC
* intp4 <- FIO
* intp5 <- LANCE
* intp6 <- floppy?
* intp7 <- SCSI
*
* R2000 interrupts:
* int0 <- ?
* int1 <- iop keyboard
* int2 <- ?
* int4 <- iop clock
* int5 <- vblank
*/
#include "emu.h"
#include "includes/mips.h"
#include "debugger.h"
#define LOG_GENERAL (1U << 0)
#define LOG_MMU (1U << 1)
#define LOG_IOCB (1U << 2)
#define VERBOSE 0
#include "logmacro.h"
void rx2030_state::machine_start()
{
save_item(NAME(m_mmu));
save_item(NAME(m_iop_interface));
}
void rx2030_state::machine_reset()
{
m_cpu->set_input_line(INPUT_LINE_RESET, 1);
}
void rx2030_state::rx2030_init()
{
m_iop_interface = IOP_NERR | DBG_ABSENT;
// map the configured ram and vram
m_cpu->space(0).install_ram(0x00000000, m_ram->mask(), m_ram->pointer());
// page zero of prom space is mapped to ram page zero
m_cpu->space(0).install_rom(0x1fc00000, 0x1fc00fff, m_ram->pointer());
if (!m_vram)
m_iop_interface |= VID_ABSENT;
}
u16 rx2030_state::mmu_r(offs_t offset, u16 mem_mask)
{
offs_t const address = (m_mmu[(offset >> 11) & 0x1f] << 12) | ((offset << 1) & 0xfff);
u16 const data = (m_ram->read(BYTE4_XOR_BE(address + 1)) << 8) | m_ram->read(BYTE4_XOR_BE(address + 0));
LOGMASKED(LOG_MMU, "mmu_r offset 0x%06x reg %d page 0x%04x mapped 0x%06x data 0x%04x\n",
(offset << 1), (offset >> 11) & 0x1f, m_mmu[(offset >> 11) & 0x1f], address, data);
return data;
}
void rx2030_state::mmu_w(offs_t offset, u16 data, u16 mem_mask)
{
offs_t const address = (m_mmu[(offset >> 11) & 0x1f] << 12) | ((offset << 1) & 0xfff);
LOGMASKED(LOG_MMU, "mmu_w offset 0x%06x reg %d page 0x%04x mapped 0x%06x data 0x%04x\n",
(offset << 1), (offset >> 11) & 0x1f, m_mmu[(offset >> 11) & 0x1f], address, data);
if (ACCESSING_BITS_0_7)
m_ram->write(BYTE4_XOR_BE(address + 0), data);
if (ACCESSING_BITS_8_15)
m_ram->write(BYTE4_XOR_BE(address + 1), data >> 8);
}
void rx2030_state::iop_program_map(address_map &map)
{
// 00000:1ffff 128k ram (64kx4, 4 parts)
// 20000:3ffff 128k shared (32x4k mapped pages, bits 0-11 offset, bits 12-16 mmu register)
// 80000:fffff 512k eprom (256k x 2 copies)
map(0x00000, 0x1ffff).ram();
map(0x20000, 0x3ffff).rw(FUNC(rx2030_state::mmu_r), FUNC(rx2030_state::mmu_w));
map(0x80000, 0xbffff).rom().region("v50_ipl", 0).mirror(0x40000);
}
void rx2030_state::iop_io_map(address_map &map)
{
map(0x0000, 0x003f).lrw16("mmu",
[this](offs_t offset, u16 mem_mask)
{
return m_mmu[offset];
},
[this](offs_t offset, u16 data, u16 mem_mask)
{
m_mmu[offset] = data;
});
map(0x0040, 0x0043).m(m_fdc, FUNC(wd37c65c_device::map)).umask16(0xff);
map(0x0044, 0x0045).w(m_fdc, FUNC(wd37c65c_device::dor_w)).umask16(0xff);
map(0x0048, 0x0049).w(m_fdc, FUNC(wd37c65c_device::ccr_w)).umask16(0xff);
//map(0x004c, 0x004d).r(m_fdc, FUNC(?)).umask16(0xff);
map(0x0080, 0x0083).rw(m_scsi, FUNC(aic6250_device::read), FUNC(aic6250_device::write)).umask16(0xff);
map(0x00c0, 0x00c1).rw(m_kbdc, FUNC(at_keyboard_controller_device::data_r), FUNC(at_keyboard_controller_device::data_w)).umask16(0xff);
map(0x00c4, 0x00c5).rw(m_kbdc, FUNC(at_keyboard_controller_device::status_r), FUNC(at_keyboard_controller_device::command_w)).umask16(0xff);
map(0x0100, 0x0107).rw(m_scc, FUNC(z80scc_device::ba_cd_inv_r), FUNC(z80scc_device::ba_cd_inv_w)).umask16(0xff);
map(0x0140, 0x0143).rw(m_net, FUNC(am7990_device::regs_r), FUNC(am7990_device::regs_w));
map(0x0180, 0x018b).lr8("mac", [this](offs_t offset)
{
// Ethernet MAC address (LSB first)
static u8 const mac[] = { 0x00, 0x00, 0x6b, 0x12, 0x34, 0x56 };
return mac[offset];
}).umask16(0xff);
// iop tests bits 0x04, 0x10 and 0x20
map(0x01c0, 0x01c1).lr8("?", [this]() { return m_iop_interface; }); // maybe?
map(0x0200, 0x0201).rw(m_fio, FUNC(z8038_device::fifo_r<1>), FUNC(z8038_device::fifo_w<1>)).umask16(0xff);
map(0x0202, 0x0203).rw(m_fio, FUNC(z8038_device::reg_r<1>), FUNC(z8038_device::reg_w<1>)).umask16(0xff);
map(0x0240, 0x0241).lw8("rtc", [this](address_space &space, offs_t offset, u8 data) { m_rtc->write(space, 0, data); }).umask16(0xff00);
map(0x0280, 0x0281).lrw8("rtc",
[this](address_space &space, offs_t offset) { return m_rtc->read(space, 1); },
[this](address_space &space, offs_t offset, u8 data) { m_rtc->write(space, 1, data); }).umask16(0xff00);
map(0x02c0, 0x2c1).lw8("cpu_interface", [this](u8 data)
{
switch (data)
{
case 0: LOG("cpu interrupt 0 asserted\n"); m_cpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE); break;
case 1: LOG("cpu interrupt 1 asserted\n"); m_cpu->set_input_line(INPUT_LINE_IRQ1, ASSERT_LINE); break;
case 2: LOG("cpu interrupt 2 asserted\n"); m_cpu->set_input_line(INPUT_LINE_IRQ2, ASSERT_LINE); break;
case 3: LOG("cpu interrupt 4 asserted\n"); m_cpu->set_input_line(INPUT_LINE_IRQ4, ASSERT_LINE); break;
case 4:
if (m_cpu->suspended())
{
LOG("cpu reset released\n");
m_cpu->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
}
else
m_iop->set_input_line(INPUT_LINE_IRQ2, CLEAR_LINE);
m_iop_interface |= IOP_IACK;
m_iop_interface &= ~IOP_IRQ; // maybe?
break;
default:
LOG("cpu interface command 0x%02x\n", data);
break;
//case 5: break; // unknown
//case 6:
//case 7:
// something to do with shared memory access?
//break;
}
}).umask16(0xff);
map(0x0380, 0x0381).lw8("led", [this](u8 data) { logerror("led_w 0x%02x\n", data); }).umask16(0xff00);
}
void rx2030_state::rx2030_map(address_map &map)
{
map(0x02000000, 0x02000003).lrw8("iop_interface",
[this]() { return m_iop_interface; },
[this](u8 data)
{
switch (data)
{
case 0: LOG("cpu interrupt 0 cleared\n"); m_cpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE); break;
case 1: LOG("cpu interrupt 1 cleared\n"); m_cpu->set_input_line(INPUT_LINE_IRQ1, CLEAR_LINE); break;
case 2: LOG("cpu interrupt 2 cleared\n"); m_cpu->set_input_line(INPUT_LINE_IRQ2, CLEAR_LINE); break;
case 3: LOG("cpu interrupt 4 cleared\n"); m_cpu->set_input_line(INPUT_LINE_IRQ4, CLEAR_LINE); break;
break;
case 4:
if (VERBOSE & LOG_IOCB)
{
static char const *const iop_commands[] =
{
"IOP", "UART0", "UART1", "NVRAM", "LED", "CLOCK", "TOD", "SCSI0",
"SCSI1", "SCSI2", "SCSI3", "SCSI4", "SCSI5", "SCSI6", "SCSI7", "FLOPPY0",
"FLOPPY1", "LANCE", "PP", "KYBD", "MOUSE", "BUZZER", "UNK22", "UNK23"
};
static char const *const iop_lance[] =
{
"", "PROBE", "INIT", "STOP", "STRT", "RECV", "XMIT", "XMIT_DONE",
"STAT", "INIT_DONE", "RESET", "DBG_ON", "DBG_OFF", "MISS"
};
for (int iocb = 0; iocb < 24; iocb++)
{
// check if command semaphore set
if (m_ram->read(0x1000 + iocb * 16 + 10) || m_ram->read(0x1000 + iocb * 16 + 11))
{
u32 const iocb_cmdparam = m_ram->read(0x1000 + iocb * 16 + 0)
| (m_ram->read(0x1000 + iocb * 16 + 1) << 8)
| (m_ram->read(0x1000 + iocb * 16 + 2) << 16)
| (m_ram->read(0x1000 + iocb * 16 + 3) << 24);
u16 const iop_cmd = m_ram->read(0x1000 + iocb_cmdparam + 2) | (m_ram->read(0x1000 + iocb_cmdparam + 3) << 8);
switch (iocb)
{
case 5: // clock
LOGMASKED(LOG_IOCB, "iocb %s command 0x%04x (%s)\n",
iop_commands[iocb], m_ram->read(0x1000 + iocb_cmdparam + 6) | (m_ram->read(0x1000 + iocb_cmdparam + 7) << 8),
machine().describe_context());
break;
case 17: // lance
LOGMASKED(LOG_IOCB, "iocb %s command %s (%s)\n",
iop_commands[iocb], iop_lance[iocb_cmdparam],
machine().describe_context());
break;
case 19: // keyboard
LOGMASKED(LOG_IOCB, "iocb %s command 0x%04x data 0x%02x (%s)\n",
iop_commands[iocb], iop_cmd,
m_ram->read(0x1000 + iocb_cmdparam + 6),
machine().describe_context());
break;
default:
LOGMASKED(LOG_IOCB, "iocb %s command 0x%04x (%s)\n",
iop_commands[iocb], iop_cmd,
machine().describe_context());
break;
}
}
}
}
// interrupt the iop
m_iop_interface &= ~IOP_IACK;
m_iop_interface |= IOP_IRQ; // maybe?
m_iop->set_input_line(INPUT_LINE_IRQ2, ASSERT_LINE);
break;
case 6: LOG("led on\n"); break;
case 7: LOG("led off\n"); break;
default:
LOG("iop interface command 0x%02x (%s)\n", data, machine().describe_context());
break;
}
}
).umask32(0xff);
}
void rx2030_state::rs2030_map(address_map &map)
{
rx2030_map(map);
// video hardware
map(0x01000000, 0x011fffff).ram().share("vram");
map(0x01ffff00, 0x01ffffff).m(m_ramdac, FUNC(bt458_device::map)).umask32(0xff);
}
u16 rx2030_state::lance_r(offs_t offset, u16 mem_mask)
{
u16 const data =
(m_ram->read(BYTE4_XOR_BE(offset + 1)) << 8) |
m_ram->read(BYTE4_XOR_BE(offset + 0));
return data;
}
void rx2030_state::lance_w(offs_t offset, u16 data, u16 mem_mask)
{
if (ACCESSING_BITS_0_7)
m_ram->write(BYTE4_XOR_BE(offset + 0), data);
if (ACCESSING_BITS_8_15)
m_ram->write(BYTE4_XOR_BE(offset + 1), data >> 8);
}
static void mips_scsi_devices(device_slot_interface &device)
{
device.option_add("harddisk", NSCSI_HARDDISK);
device.option_add("cdrom", NSCSI_CDROM);
}
void rx2030_state::rx2030(machine_config &config)
{
R2000A(config, m_cpu, 33.333_MHz_XTAL / 2, 32768, 32768);
m_cpu->set_fpurev(0x0315); // 0x0315 == R2010A v1.5
m_cpu->in_brcond<0>().set([]() { return 1; }); // logerror("brcond0 sampled (%s)\n", machine().describe_context());
V50(config, m_iop, 20_MHz_XTAL / 2);
m_iop->set_addrmap(AS_PROGRAM, &rx2030_state::iop_program_map);
m_iop->set_addrmap(AS_IO, &rx2030_state::iop_io_map);
// general dma configuration
m_iop->out_hreq_cb().set(m_iop, FUNC(v50_device::hack_w));
m_iop->in_mem16r_cb().set(FUNC(rx2030_state::mmu_r));
m_iop->out_mem16w_cb().set(FUNC(rx2030_state::mmu_w));
// dma channel 1: scsi
m_iop->in_io16r_cb<1>().set(m_scsi, FUNC(aic6250_device::dma16_r));
m_iop->out_io16w_cb<1>().set(m_scsi, FUNC(aic6250_device::dma16_w));
m_iop->out_dack_cb<1>().set(m_scsi, FUNC(aic6250_device::back_w));
RAM(config, m_ram);
m_ram->set_default_size("16M");
m_ram->set_extra_options("4M,8M,12M");
m_ram->set_default_value(0);
// rtc and nvram
MC146818(config, m_rtc, 32.768_kHz_XTAL);
// parallel port
Z8038(config, m_fio, 0);
m_fio->out_int_cb<1>().set_inputline(m_iop, INPUT_LINE_IRQ4);
// keyboard
pc_kbdc_device &kbdc(PC_KBDC(config, "pc_kbdc", 0));
kbdc.out_clock_cb().set(m_kbdc, FUNC(at_keyboard_controller_device::kbd_clk_w));
kbdc.out_data_cb().set(m_kbdc, FUNC(at_keyboard_controller_device::kbd_data_w));
PC_KBDC_SLOT(config, m_kbd, 0);
pc_at_keyboards(*m_kbd);
m_kbd->set_pc_kbdc_slot(&kbdc);
AT_KEYBOARD_CONTROLLER(config, m_kbdc, 12_MHz_XTAL);
//m_kbdc->hot_res().set_inputline(m_maincpu, INPUT_LINE_RESET);
m_kbdc->kbd_clk().set(kbdc, FUNC(pc_kbdc_device::clock_write_from_mb));
m_kbdc->kbd_data().set(kbdc, FUNC(pc_kbdc_device::data_write_from_mb));
SCC85C30(config, m_scc, 1.8432_MHz_XTAL);
m_scc->configure_channels(m_scc->clock(), m_scc->clock(), m_scc->clock(), m_scc->clock());
m_scc->out_int_callback().set_inputline(m_iop, INPUT_LINE_IRQ3);
// scc channel A (tty0)
RS232_PORT(config, m_tty[0], default_rs232_devices, nullptr);
m_tty[0]->cts_handler().set(m_scc, FUNC(z80scc_device::ctsa_w));
m_tty[0]->dcd_handler().set(m_scc, FUNC(z80scc_device::dcda_w));
m_tty[0]->rxd_handler().set(m_scc, FUNC(z80scc_device::rxa_w));
m_scc->out_rtsa_callback().set(m_tty[0], FUNC(rs232_port_device::write_rts));
m_scc->out_txda_callback().set(m_tty[0], FUNC(rs232_port_device::write_txd));
// scc channel B (tty1)
RS232_PORT(config, m_tty[1], default_rs232_devices, nullptr);
m_tty[1]->cts_handler().set(m_scc, FUNC(z80scc_device::ctsb_w));
m_tty[1]->dcd_handler().set(m_scc, FUNC(z80scc_device::dcdb_w));
m_tty[1]->rxd_handler().set(m_scc, FUNC(z80scc_device::rxb_w));
m_scc->out_rtsb_callback().set(m_tty[1], FUNC(rs232_port_device::write_rts));
m_scc->out_txdb_callback().set(m_tty[1], FUNC(rs232_port_device::write_txd));
// floppy controller and drive
WD37C65C(config, m_fdc, 16_MHz_XTAL);
m_fdc->intrq_wr_callback().set_inputline(m_iop, INPUT_LINE_IRQ6);
//m_fdc->drq_wr_callback().set();
FLOPPY_CONNECTOR(config, "fdc:0", "35hd", FLOPPY_35_HD, true, &FLOPPY_PC_FORMAT).enable_sound(false);
// scsi bus and devices
NSCSI_BUS(config, m_scsibus, 0);
nscsi_connector &harddisk(NSCSI_CONNECTOR(config, "scsi:0", 0));
mips_scsi_devices(harddisk);
harddisk.set_default_option("harddisk");
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:1", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:2", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:3", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:4", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:5", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:6", 0));
// scsi host adapter
nscsi_connector &adapter(NSCSI_CONNECTOR(config, "scsi:7", 0));
adapter.option_add_internal("aic6250", AIC6250);
adapter.set_default_option("aic6250");
adapter.set_fixed(true);
adapter.set_option_machine_config("aic6250", [this](device_t *device)
{
aic6250_device &adapter = downcast<aic6250_device &>(*device);
adapter.set_clock(10_MHz_XTAL); // clock assumed
adapter.int_cb().set_inputline(m_iop, INPUT_LINE_IRQ7).invert();
adapter.breq_cb().set(m_iop, FUNC(v50_device::dreq_w<1>));
});
// ethernet
AM7990(config, m_net);
m_net->intr_out().set_inputline(m_iop, INPUT_LINE_IRQ5).invert();
m_net->dma_in().set(FUNC(rx2030_state::lance_r));
m_net->dma_out().set(FUNC(rx2030_state::lance_w));
// buzzer
SPEAKER(config, "mono").front_center();
SPEAKER_SOUND(config, m_buzzer);
m_buzzer->add_route(ALL_OUTPUTS, "mono", 0.50);
}
void rx2030_state::rc2030(machine_config &config)
{
rx2030(config);
m_cpu->set_addrmap(AS_PROGRAM, &rx2030_state::rx2030_map);
// no keyboard
m_kbd->set_default_option(nullptr);
m_tty[1]->set_default_option("terminal");
}
void rx2030_state::rs2030(machine_config &config)
{
rx2030(config);
m_cpu->set_addrmap(AS_PROGRAM, &rx2030_state::rs2030_map);
m_kbd->set_default_option(STR_KBD_MICROSOFT_NATURAL);
// video hardware (1280x1024x8bpp @ 60Hz), 40 parts vram
u32 const pixclock = 108'189'000;
// timing from VESA 1280x1024 @ 60Hz
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_raw(pixclock, 1688, 248, 1528, 1066, 38, 1062);
m_screen->set_screen_update(FUNC(rx2030_state::screen_update));
m_screen->screen_vblank().set_inputline(m_cpu, INPUT_LINE_IRQ5);
BT458(config, m_ramdac, pixclock);
}
u32 rx2030_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, rectangle const &cliprect)
{
/*
* The graphics board has 1280KiB of video ram fitted, which is organised
* such that each 1280 pixel line occupies 2048 bytes of the address space;
* the remaining 768 addresses are presumably not mapped to anything.
*/
u32 *pixel_pointer = m_vram;
for (int y = screen.visible_area().min_y; y <= screen.visible_area().max_y; y++)
{
for (int x = screen.visible_area().min_x; x <= screen.visible_area().max_x; x += 4)
{
u32 const pixel_data = *pixel_pointer++;
bitmap.pix(y, x + 0) = m_ramdac->pen_color((pixel_data >> 24) & 0xff);
bitmap.pix(y, x + 1) = m_ramdac->pen_color((pixel_data >> 16) & 0xff);
bitmap.pix(y, x + 2) = m_ramdac->pen_color((pixel_data >> 8) & 0xff);
bitmap.pix(y, x + 3) = m_ramdac->pen_color((pixel_data >> 0) & 0xff);
}
// compensate by 2048 - 1280 pixels per line
pixel_pointer += 0xc0;
}
return 0;
}
void rx3230_state::rx3230_map(address_map &map)
{
map(0x00000000, 0x07ffffff).noprw(); // silence ram
map(0x18000000, 0x1800003f).m(m_scsi, FUNC(ncr53c94_device::map)).umask32(0xff);
map(0x19000000, 0x19000003).rw(m_kbdc, FUNC(at_keyboard_controller_device::data_r), FUNC(at_keyboard_controller_device::data_w)).umask32(0xff);
map(0x19000004, 0x19000007).rw(m_kbdc, FUNC(at_keyboard_controller_device::status_r), FUNC(at_keyboard_controller_device::command_w)).umask32(0xff);
map(0x1a000000, 0x1a000007).rw(m_net, FUNC(am7990_device::regs_r), FUNC(am7990_device::regs_w)).umask32(0xffff);
map(0x1b000000, 0x1b00001f).rw(m_scc, FUNC(z80scc_device::ba_cd_inv_r), FUNC(z80scc_device::ba_cd_inv_w)).umask32(0xff); // TODO: order?
map(0x1c000000, 0x1c000fff).ram(); // MIPS RAMBO DMA engine
map(0x1d000000, 0x1d001fff).rw(m_rtc, FUNC(m48t02_device::read), FUNC(m48t02_device::write)).umask32(0xff);
map(0x1e000000, 0x1e000007).m(m_fdc, FUNC(i82072_device::map)).umask32(0xff);
//map(0x1e800000, 0x1e800003).umask32(0xff); // fdc tc
map(0x1ff00000, 0x1ff00003).lr8("boardtype", []() { return 0xa; }).umask32(0xff); // r? idprom boardtype?
//map(0x1ff00018, 0x1ff0001b).umask32(0x0000ff00); // r? idprom?
map(0x1fc00000, 0x1fc3ffff).rom().region("rx3230", 0);
}
void rx3230_state::rs3230_map(address_map &map)
{
rx3230_map(map);
map(0x10000000, 0x103fffff); // frame buffer, 4M?
map(0x14000000, 0x14000003).rw(m_ramdac, FUNC(bt459_device::address_lo_r), FUNC(bt459_device::address_lo_w)).umask32(0xff);
map(0x14080000, 0x14080003).rw(m_ramdac, FUNC(bt459_device::address_hi_r), FUNC(bt459_device::address_hi_w)).umask32(0xff);
map(0x14100000, 0x14100003).rw(m_ramdac, FUNC(bt459_device::register_r), FUNC(bt459_device::register_w)).umask32(0xff);
map(0x14180000, 0x14180003).rw(m_ramdac, FUNC(bt459_device::palette_r), FUNC(bt459_device::palette_w)).umask32(0xff);
}
void rx3230_state::machine_start()
{
}
void rx3230_state::machine_reset()
{
}
void rx3230_state::rx3230_init()
{
// map the configured ram
m_cpu->space(0).install_ram(0x00000000, m_ram->mask(), m_ram->pointer());
}
void rx3230_state::rx3230(machine_config &config)
{
R3000A(config, m_cpu, 50_MHz_XTAL / 2, 32768, 32768);
m_cpu->set_fpurev(0x0340); // 0x0340 == R3010A v4.0?
m_cpu->in_brcond<0>().set([]() { return 1; });
// 32 SIMM slots, 8-128MB memory, banks of 8 1MB or 4MB SIMMs
RAM(config, m_ram);
m_ram->set_default_size("16M");
m_ram->set_extra_options("32M,64M,128M");
m_ram->set_default_value(0);
// scsi bus and devices
NSCSI_BUS(config, m_scsibus, 0);
nscsi_connector &harddisk(NSCSI_CONNECTOR(config, "scsi:0", 0));
mips_scsi_devices(harddisk);
harddisk.set_default_option("harddisk");
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:1", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:2", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:3", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:4", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:5", 0));
mips_scsi_devices(NSCSI_CONNECTOR(config, "scsi:6", 0));
// scsi host adapter
nscsi_connector &adapter(NSCSI_CONNECTOR(config, "scsi:7", 0));
adapter.option_add_internal("ncr53c94", NCR53C94);
adapter.set_default_option("ncr53c94");
adapter.set_fixed(true);
adapter.set_option_machine_config("ncr53c94", [this](device_t *device)
{
ncr53c94_device &adapter = downcast<ncr53c94_device &>(*device);
adapter.set_clock(24_MHz_XTAL);
adapter.irq_handler_cb().set_inputline(m_cpu, INPUT_LINE_IRQ1);
//adapter.breq_cb().set(m_iop, FUNC(v50_device::dreq_w<1>));
});
// ethernet
AM7990(config, m_net);
//m_net->intr_out().set_inputline(m_iop, INPUT_LINE_IRQ5).invert(); // -> rambo
//m_net->dma_in().set(FUNC(rx3230_state::lance_r));
//m_net->dma_out().set(FUNC(rx3230_state::lance_w));
SCC85C30(config, m_scc, 1.8432_MHz_XTAL); // TODO: clock
//m_scc->configure_channels(m_scc->clock(), m_scc->clock(), m_scc->clock(), m_scc->clock());
//m_scc->out_int_callback().set_inputline(m_iop, INPUT_LINE_IRQ3); // -> rambo
// scc channel A (tty0)
RS232_PORT(config, m_tty[0], default_rs232_devices, nullptr);
m_tty[0]->cts_handler().set(m_scc, FUNC(z80scc_device::ctsa_w));
m_tty[0]->dcd_handler().set(m_scc, FUNC(z80scc_device::dcda_w));
m_tty[0]->rxd_handler().set(m_scc, FUNC(z80scc_device::rxa_w));
m_scc->out_rtsa_callback().set(m_tty[0], FUNC(rs232_port_device::write_rts));
m_scc->out_txda_callback().set(m_tty[0], FUNC(rs232_port_device::write_txd));
// scc channel B (tty1)
RS232_PORT(config, m_tty[1], default_rs232_devices, nullptr);
m_tty[1]->cts_handler().set(m_scc, FUNC(z80scc_device::ctsb_w));
m_tty[1]->dcd_handler().set(m_scc, FUNC(z80scc_device::dcdb_w));
m_tty[1]->rxd_handler().set(m_scc, FUNC(z80scc_device::rxb_w));
m_scc->out_rtsb_callback().set(m_tty[1], FUNC(rs232_port_device::write_rts));
m_scc->out_txdb_callback().set(m_tty[1], FUNC(rs232_port_device::write_txd));
M48T02(config, m_rtc);
// floppy controller and drive
I82072(config, m_fdc, 16_MHz_XTAL);
m_fdc->intrq_wr_callback().set_inputline(m_cpu, INPUT_LINE_IRQ4);
//m_fdc->drq_wr_callback().set();
FLOPPY_CONNECTOR(config, "fdc:0", "35hd", FLOPPY_35_HD, true, &FLOPPY_PC_FORMAT).enable_sound(false);
// keyboard
pc_kbdc_device &kbdc(PC_KBDC(config, "pc_kbdc", 0));
kbdc.out_clock_cb().set(m_kbdc, FUNC(at_keyboard_controller_device::kbd_clk_w));
kbdc.out_data_cb().set(m_kbdc, FUNC(at_keyboard_controller_device::kbd_data_w));
PC_KBDC_SLOT(config, m_kbd, 0);
pc_at_keyboards(*m_kbd);
m_kbd->set_pc_kbdc_slot(&kbdc);
AT_KEYBOARD_CONTROLLER(config, m_kbdc, 12_MHz_XTAL); // TODO: confirm
//m_kbdc->hot_res().set_inputline(m_maincpu, INPUT_LINE_RESET);
m_kbdc->kbd_clk().set(kbdc, FUNC(pc_kbdc_device::clock_write_from_mb));
m_kbdc->kbd_data().set(kbdc, FUNC(pc_kbdc_device::data_write_from_mb));
//m_kbdc->kbd_irq().set(); // -> rambo
}
void rx3230_state::rc3230(machine_config &config)
{
rx3230(config);
m_cpu->set_addrmap(AS_PROGRAM, &rx3230_state::rx3230_map);
m_tty[1]->set_default_option("terminal");
}
void rx3230_state::rs3230(machine_config &config)
{
rx3230(config);
m_cpu->set_addrmap(AS_PROGRAM, &rx3230_state::rs3230_map);
m_kbd->set_default_option(STR_KBD_MICROSOFT_NATURAL);
// video hardware (1280x1024x8bpp @ 60Hz), 16 parts vram
u32 const pixclock = 108'180'000;
// timing from VESA 1280x1024 @ 60Hz
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_raw(pixclock, 1688, 248, 1528, 1066, 38, 1062);
m_screen->set_screen_update(FUNC(rx3230_state::screen_update));
//m_screen->screen_vblank().set_inputline(m_cpu, INPUT_LINE_IRQ5);
BT459(config, m_ramdac, pixclock);
RAM(config, m_vram);
m_vram->set_default_size("2M");
m_vram->set_default_value(0);
}
u32 rx3230_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, rectangle const &cliprect)
{
m_ramdac->screen_update(screen, bitmap, cliprect, m_vram->pointer());
return 0;
}
ROM_START(rx2030)
ROM_REGION16_LE(0x40000, "v50_ipl", 0)
ROM_SYSTEM_BIOS(0, "v4.32", "Rx2030 v4.32, Jan 1991")
ROMX_LOAD("50-00121__005.u139", 0x00000, 0x10000, CRC(b2f42665) SHA1(81c83aa6b8865338fda5c03733ede91749997648), ROM_BIOS(0) | ROM_SKIP(1))
ROMX_LOAD("50-00120__005.u140", 0x00001, 0x10000, CRC(0ffa485e) SHA1(7cdfb81d1a547c5ccc88e1e0ef73d447cd03e9e2), ROM_BIOS(0) | ROM_SKIP(1))
ROMX_LOAD("50-00119__005.u141", 0x20001, 0x10000, CRC(68fb219d) SHA1(7161ad8e5e0207d8730e09753ca74bfec0e782f8), ROM_BIOS(0) | ROM_SKIP(1))
ROMX_LOAD("50-00118__005.u142", 0x20000, 0x10000, CRC(b59426d3) SHA1(3fc09b0368f731c2c07cf29b481f30c01e330929), ROM_BIOS(0) | ROM_SKIP(1))
ROM_SYSTEM_BIOS(1, "v4.30", "Rx2030 v4.30, Jul 1989")
ROMX_LOAD("50-00121__003.u139", 0x00000, 0x10000, CRC(ebc580ac) SHA1(63f9a1d344d53f32ee769f5137820faf64ffa291), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("50-00120__003.u140", 0x00001, 0x10000, CRC(e1991721) SHA1(028d33be271c95f198473b650f7800f9ca4a60b2), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("50-00119__003.u141", 0x20001, 0x10000, CRC(c8469906) SHA1(69bbf4b5c415b2e2156a4467bf9cb30e79f586ef), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("50-00118__003.u142", 0x20000, 0x10000, CRC(18cc001a) SHA1(198023e92e1e3ba2fc8637f5dd6f370e7e023fdd), ROM_BIOS(1) | ROM_SKIP(1))
ROM_REGION(0x800, "i8742_eprom", 0)
ROM_LOAD("keyboard_1.5.bin", 0x000, 0x800, CRC(f86ba0f7) SHA1(1ad475451db35a76d929824c035d582279fbe3a3))
/*
* The following isn't a real dump, but a hand-made nvram image that allows
* entry to the boot monitor. Variables can be adjusted via the monitor,
* and are laid out as follows:
*
* Offset Length Variable
* 0x0e 4 netaddr
* 0x12 1 lbaud
* 0x13 1 rbaud
* 0x14 20 bootfile
* 0x28 1 bootmode
* 0x29 1 console
* 0x2a 1 ponmask? or something similar
* 0x2b 3 unused?
* 0x2e 4 resetepc
* 0x32 4 resetra
* 0x36 1 keyswtch
* 0x37 1 flag
* 0x38 8 unused?
*
*/
ROM_REGION(0x40, "rtc", 0)
ROM_LOAD("ds1287.bin", 0x00, 0x40, CRC(28369bf3) SHA1(64f24e1d8fb7103ab0bd3023c66490447bdcbf89))
ROM_END
#define rom_rc2030 rom_rx2030
#define rom_rs2030 rom_rx2030
ROM_START(rx3230)
ROM_REGION32_BE(0x40000, "rx3230", 0)
ROM_SYSTEM_BIOS(0, "v5.40", "Rx3230 v5.40, Jun 1990")
ROMX_LOAD("50-314-003__3230_left.bin", 0x00002, 0x20000, CRC(77ce42c9) SHA1(b2d5e5a386ed0ff840646647ba90b3c36732a7fe), ROM_BIOS(0) | ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2))
ROMX_LOAD("50-314-003__3230_right.bin", 0x00000, 0x20000, CRC(5bc1ce2f) SHA1(38661234bf40b76395393459de49e48619b2b454), ROM_BIOS(0) | ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2))
ROM_SYSTEM_BIOS(1, "v5.42", "Rx3230 v5.42, Mar 1991")
ROMX_LOAD("unknown.bin", 0x00002, 0x20000, NO_DUMP, ROM_BIOS(1) | ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2))
ROMX_LOAD("unknown.bin", 0x00000, 0x20000, NO_DUMP, ROM_BIOS(1) | ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2))
//ROM_REGION(0x800, "i8042", 0)
//ROM_LOAD("unknown.bin", 0x000, 0x800, NO_DUMP)
//ROM_REGION(0x800, "rtc", 0)
//ROM_LOAD("m48t02.bin", 0x000, 0x800, NO_DUMP)
ROM_END
#define rom_rc3230 rom_rx3230
#define rom_rs3230 rom_rx3230
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP(1989, rc2030, 0, 0, rc2030, 0, rx2030_state, rx2030_init, "MIPS", "RC2030", MACHINE_NOT_WORKING)
COMP(1989, rs2030, 0, 0, rs2030, 0, rx2030_state, rx2030_init, "MIPS", "RS2030", MACHINE_NOT_WORKING)
COMP(1990, rc3230, 0, 0, rc3230, 0, rx3230_state, rx3230_init, "MIPS", "RC3230", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP(1990, rs3230, 0, 0, rs3230, 0, rx3230_state, rx3230_init, "MIPS", "RS3230", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
|