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mips: rx2030 boots RISC/os

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Rx2030 systems now boot RISC/os (with FPU disabled) from an existing hard disk image, but require an unimplemented MIPS keyboard emulation to log in. Clean installation requires either SCSI tape emulation or support for a MIPS-only network boot protocol.
This commit is contained in:
Patrick Mackinlay 2019-01-03 14:02:52 +07:00
parent 15c9d80813
commit 4215166070
1 changed files with 10 additions and 7 deletions
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17
src/mame/drivers/mips.cpp
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@ -43,13 +43,13 @@
* https://web.archive.org/web/20140518203135/http://no-l.org/pages/riscos.html
*
* TODO (rx2030)
* - remaining iop interface
* - figure out the brcond0 signal
* - keyboard controller and keyboard
* - buzzer
*
* TODO (rx3230)
* - verify/complete address maps
* - keyboard controller and interrupts
* - isa slot and colour graphics board
* - idprom
*
* Ref Part Function
@ -133,7 +133,7 @@
/*
* Rx2030 WIP
*
* status: loads RISC/os, but panics
* status: boots RISC/os, requires unimplemented MIPS keyboard
*
* V50 internal peripherals:
* base = 0xfe00
@ -171,7 +171,7 @@
/*
* Rx3230 WIP
*
* status: boots to monitor
* status: boots RISC/os from network, panics during installation
*
* R3000 interrupts
* 0 <- lance, scc, slot, keyboard
@ -477,7 +477,8 @@ static void mips_scsi_devices(device_slot_interface &device)
void rx2030_state::rx2030(machine_config &config)
{
R2000A(config, m_cpu, 33.333_MHz_XTAL / 2, 32768, 32768);
m_cpu->set_fpurev(mips1_device_base::MIPS_R2010A);
// TODO: FPU disabled until properly emulated
//m_cpu->set_fpurev(mips1_device_base::MIPS_R2010A);
m_cpu->in_brcond<0>().set([]() { return 1; }); // writeback complete
V50(config, m_iop, 20_MHz_XTAL / 2);
@ -756,7 +757,8 @@ void rx3230_state::rx3230(machine_config &config)
{
R3000A(config, m_cpu, 50_MHz_XTAL / 2, 32768, 32768);
m_cpu->set_addrmap(AS_PROGRAM, &rx3230_state::rx3230_map);
m_cpu->set_fpurev(mips1_device_base::MIPS_R3010A);
// TODO: FPU disabled until properly emulated
//m_cpu->set_fpurev(mips1_device_base::MIPS_R3010A);
m_cpu->in_brcond<0>().set([]() { return 1; }); // writeback complete
// 32 SIMM slots, 8-128MB memory, banks of 8 1MB or 4MB SIMMs
@ -767,6 +769,7 @@ void rx3230_state::rx3230(machine_config &config)
MIPS_RAMBO(config, m_rambo, 25_MHz_XTAL / 4);
m_rambo->timer_out().set_inputline(m_cpu, INPUT_LINE_IRQ2);
m_rambo->irq_out().set_inputline(m_cpu, INPUT_LINE_IRQ1);
m_rambo->parity_out().set_inputline(m_cpu, INPUT_LINE_IRQ5);
//m_rambo->buzzer_out().set(m_buzzer, FUNC(speaker_sound_device::level_w));
m_rambo->set_ram(m_ram);
@ -847,7 +850,7 @@ void rx3230_state::rx3230(machine_config &config)
AT_KEYBOARD_CONTROLLER(config, m_kbdc, 12_MHz_XTAL); // TODO: confirm
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(FUNC(rx3230_state::irq_w<INT_KBD>));
//m_kbdc->kbd_irq().set(FUNC(rx3230_state::irq_w<INT_KBD>));
// buzzer
SPEAKER(config, "mono").front_center();