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diff --git a/src/mame/drivers/aussiebyte.cpp b/src/mame/drivers/aussiebyte.cpp
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-// license:BSD-3-Clause
-// copyright-holders:Robbbert
-/*************************************************************************************************
-
- The Aussie Byte II Single-Board Computer, created by SME Systems, Melbourne, Australia.
- Also known as the Knight 2000 Microcomputer.
-
- Status:
- Boots up from floppy.
- Output to serial terminal and to 6545 are working. Serial keyboard works.
-
- Developed in conjunction with members of the MSPP. Written in July, 2015.
-
- ToDo:
- - CRT8002 attributes controller
- - Graphics
- - Hard drive controllers and drives
- - Test Centronics printer
- - PIO connections
-
- Note of MAME restrictions:
- - Votrax doesn't sound anything like the real thing
- - WD1001/WD1002 device is not emulated
- - CRT8002 device is not emulated
-
-**************************************************************************************************/
-
-/***********************************************************
-
- Includes
-
-************************************************************/
-#include "emu.h"
-#include "includes/aussiebyte.h"
-
-#include "screen.h"
-#include "speaker.h"
-
-
-/***********************************************************
-
- Address Maps
-
-************************************************************/
-
-void aussiebyte_state::aussiebyte_map(address_map &map)
-{
- map(0x0000, 0x3fff).bankr("bankr0").bankw("bankw0");
- map(0x4000, 0x7fff).bankrw("bank1");
- map(0x8000, 0xbfff).bankrw("bank2");
- map(0xc000, 0xffff).ram().region("mram", 0x0000);
-}
-
-void aussiebyte_state::aussiebyte_io(address_map &map)
-{
- map.global_mask(0xff);
- map.unmap_value_high();
- map(0x00, 0x03).rw("sio1", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
- map(0x04, 0x07).rw(m_pio1, FUNC(z80pio_device::read), FUNC(z80pio_device::write));
- map(0x08, 0x0b).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
- map(0x0c, 0x0f).noprw(); // winchester interface
- map(0x10, 0x13).rw(m_fdc, FUNC(wd2797_device::read), FUNC(wd2797_device::write));
- map(0x14, 0x14).rw(m_dma, FUNC(z80dma_device::bus_r), FUNC(z80dma_device::bus_w));
- map(0x15, 0x15).w(FUNC(aussiebyte_state::port15_w)); // boot rom disable
- map(0x16, 0x16).w(FUNC(aussiebyte_state::port16_w)); // fdd select
- map(0x17, 0x17).w(FUNC(aussiebyte_state::port17_w)); // DMA mux
- map(0x18, 0x18).w(FUNC(aussiebyte_state::port18_w)); // fdc select
- map(0x19, 0x19).r(FUNC(aussiebyte_state::port19_r)); // info port
- map(0x1a, 0x1a).w(FUNC(aussiebyte_state::port1a_w)); // membank
- map(0x1b, 0x1b).w(FUNC(aussiebyte_state::port1b_w)); // winchester control
- map(0x1c, 0x1f).w(FUNC(aussiebyte_state::port1c_w)); // gpebh select
- map(0x20, 0x23).rw(m_pio2, FUNC(z80pio_device::read), FUNC(z80pio_device::write));
- map(0x24, 0x27).rw("sio2", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
- map(0x28, 0x28).r(FUNC(aussiebyte_state::port28_r)).w(m_votrax, FUNC(votrax_sc01_device::write));
- map(0x2c, 0x2c).w(m_votrax, FUNC(votrax_sc01_device::inflection_w));
- map(0x30, 0x30).w(FUNC(aussiebyte_state::address_w));
- map(0x31, 0x31).r(m_crtc, FUNC(mc6845_device::status_r));
- map(0x32, 0x32).w(FUNC(aussiebyte_state::register_w));
- map(0x33, 0x33).r(FUNC(aussiebyte_state::port33_r));
- map(0x34, 0x34).w(FUNC(aussiebyte_state::port34_w)); // video control
- map(0x35, 0x35).w(FUNC(aussiebyte_state::port35_w)); // data to vram and aram
- map(0x36, 0x36).r(FUNC(aussiebyte_state::port36_r)); // data from vram and aram
- map(0x37, 0x37).r(FUNC(aussiebyte_state::port37_r)); // read dispen flag
- map(0x40, 0x4f).rw(FUNC(aussiebyte_state::rtc_r), FUNC(aussiebyte_state::rtc_w));
-}
-
-/***********************************************************
-
- Keyboard
-
-************************************************************/
-static INPUT_PORTS_START( aussiebyte )
-INPUT_PORTS_END
-
-/***********************************************************
-
- I/O Ports
-
-************************************************************/
-WRITE8_MEMBER( aussiebyte_state::port15_w )
-{
- membank("bankr0")->set_entry(m_port15); // point at ram
- m_port15 = true;
-}
-
-/* FDD select
-0 Drive Select bit O
-1 Drive Select bit 1
-2 Drive Select bit 2
-3 Drive Select bit 3
- - These bits connect to a 74LS145 binary to BCD converter.
- - Drives 0 to 3 are 5.25 inch, 4 to 7 are 8 inch, 9 and 0 are not used.
- - Currently we only support drive 0.
-4 Side Select to Disk Drives.
-5 Disable 5.25 inch floppy spindle motors.
-6 Unused.
-7 Enable write precompensation on WD2797 controller. */
-WRITE8_MEMBER( aussiebyte_state::port16_w )
-{
- floppy_image_device *m_floppy = nullptr;
- if ((data & 15) == 0)
- m_floppy = m_floppy0->get_device();
- else
- if ((data & 15) == 1)
- m_floppy = m_floppy1->get_device();
-
- m_fdc->set_floppy(m_floppy);
-
- if (m_floppy)
- {
- m_floppy->mon_w(BIT(data, 5));
- m_floppy->ss_w(BIT(data, 4));
- }
-}
-
-/* DMA select
-0 - FDC
-1 - SIO Ch A
-2 - SIO Ch B
-3 - Winchester bus
-4 - SIO Ch C
-5 - SIO Ch D
-6 - Ext ready 1
-7 - Ext ready 2 */
-WRITE8_MEMBER( aussiebyte_state::port17_w )
-{
- m_port17 = data & 7;
- m_dma->rdy_w(BIT(m_port17_rdy, data));
-}
-
-/* FDC params
-2 EXC: WD2797 clock frequency. H = 5.25"; L = 8"
-3 WIEN: WD2797 Double density select. */
-WRITE8_MEMBER( aussiebyte_state::port18_w )
-{
- m_fdc->set_unscaled_clock(BIT(data, 2) ? 1e6 : 2e6);
- m_fdc->dden_w(BIT(data, 3));
-}
-
-READ8_MEMBER( aussiebyte_state::port19_r )
-{
- return m_port19;
-}
-
-// Memory banking
-WRITE8_MEMBER( aussiebyte_state::port1a_w )
-{
- data &= 7;
- switch (data)
- {
- case 0:
- case 1:
- case 2:
- case 3:
- case 4:
- m_port1a = data*3+1;
- if (m_port15)
- membank("bankr0")->set_entry(data*3+1);
- membank("bankw0")->set_entry(data*3+1);
- membank("bank1")->set_entry(data*3+2);
- membank("bank2")->set_entry(data*3+3);
- break;
- case 5:
- m_port1a = 1;
- if (m_port15)
- membank("bankr0")->set_entry(1);
- membank("bankw0")->set_entry(1);
- membank("bank1")->set_entry(2);
- membank("bank2")->set_entry(13);
- break;
- case 6:
- m_port1a = 14;
- if (m_port15)
- membank("bankr0")->set_entry(14);
- membank("bankw0")->set_entry(14);
- membank("bank1")->set_entry(15);
- //membank("bank2")->set_entry(0); // open bus
- break;
- case 7:
- m_port1a = 1;
- if (m_port15)
- membank("bankr0")->set_entry(1);
- membank("bankw0")->set_entry(1);
- membank("bank1")->set_entry(4);
- membank("bank2")->set_entry(13);
- break;
- }
-}
-
-// Winchester control
-WRITE8_MEMBER( aussiebyte_state::port1b_w )
-{
-}
-
-// GPEHB control
-WRITE8_MEMBER( aussiebyte_state::port1c_w )
-{
-}
-
-WRITE8_MEMBER( aussiebyte_state::port20_w )
-{
- m_speaker->level_w(BIT(data, 7));
- m_rtc->cs_w(BIT(data, 0));
- m_rtc->hold_w(BIT(data, 0));
-}
-
-READ8_MEMBER( aussiebyte_state::port28_r )
-{
- return m_port28;
-}
-
-/***********************************************************
-
- RTC
-
-************************************************************/
-READ8_MEMBER( aussiebyte_state::rtc_r )
-{
- m_rtc->read_w(1);
- m_rtc->address_w(offset);
- uint8_t data = m_rtc->data_r();
- m_rtc->read_w(0);
- return data;
-}
-
-WRITE8_MEMBER( aussiebyte_state::rtc_w )
-{
- m_rtc->address_w(offset);
- m_rtc->data_w(data);
- m_rtc->write_w(1);
- m_rtc->write_w(0);
-}
-
-/***********************************************************
-
- DMA
-
-************************************************************/
-READ8_MEMBER( aussiebyte_state::memory_read_byte )
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM);
- return prog_space.read_byte(offset);
-}
-
-WRITE8_MEMBER( aussiebyte_state::memory_write_byte )
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM);
- prog_space.write_byte(offset, data);
-}
-
-READ8_MEMBER( aussiebyte_state::io_read_byte )
-{
- address_space& prog_space = m_maincpu->space(AS_IO);
- return prog_space.read_byte(offset);
-}
-
-WRITE8_MEMBER( aussiebyte_state::io_write_byte )
-{
- address_space& prog_space = m_maincpu->space(AS_IO);
- prog_space.write_byte(offset, data);
-}
-
-WRITE_LINE_MEMBER( aussiebyte_state::busreq_w )
-{
-// since our Z80 has no support for BUSACK, we assume it is granted immediately
- m_maincpu->set_input_line(Z80_INPUT_LINE_BUSRQ, state);
- m_dma->bai_w(state); // tell dma that bus has been granted
-}
-
-/***********************************************************
-
- DMA selector
-
-************************************************************/
-WRITE_LINE_MEMBER( aussiebyte_state::sio1_rdya_w )
-{
- m_port17_rdy = (m_port17_rdy & 0xfd) | (uint8_t)(state << 1);
- if (m_port17 == 1)
- m_dma->rdy_w(state);
-}
-
-WRITE_LINE_MEMBER( aussiebyte_state::sio1_rdyb_w )
-{
- m_port17_rdy = (m_port17_rdy & 0xfb) | (uint8_t)(state << 2);
- if (m_port17 == 2)
- m_dma->rdy_w(state);
-}
-
-WRITE_LINE_MEMBER( aussiebyte_state::sio2_rdya_w )
-{
- m_port17_rdy = (m_port17_rdy & 0xef) | (uint8_t)(state << 4);
- if (m_port17 == 4)
- m_dma->rdy_w(state);
-}
-
-WRITE_LINE_MEMBER( aussiebyte_state::sio2_rdyb_w )
-{
- m_port17_rdy = (m_port17_rdy & 0xdf) | (uint8_t)(state << 5);
- if (m_port17 == 5)
- m_dma->rdy_w(state);
-}
-
-
-/***********************************************************
-
- Video
-
-************************************************************/
-
-/* F4 Character Displayer */
-static const gfx_layout crt8002_charlayout =
-{
- 8, 12, /* 7 x 11 characters */
- 128, /* 128 characters */
- 1, /* 1 bits per pixel */
- { 0 }, /* no bitplanes */
- /* x offsets */
- { 0, 1, 2, 3, 4, 5, 6, 7 },
- /* y offsets */
- { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8 },
- 8*16 /* every char takes 16 bytes */
-};
-
-static GFXDECODE_START( gfx_crt8002 )
- GFXDECODE_ENTRY( "chargen", 0x0000, crt8002_charlayout, 0, 1 )
-GFXDECODE_END
-
-/***************************************************************
-
- Daisy Chain
-
-****************************************************************/
-
-static const z80_daisy_config daisy_chain_intf[] =
-{
- { "dma" },
- { "pio2" },
- { "sio1" },
- { "sio2" },
- { "pio1" },
- { "ctc" },
- { nullptr }
-};
-
-
-/***********************************************************
-
- CTC
-
-************************************************************/
-
-// baud rate generator. All inputs are 1.2288MHz.
-WRITE_LINE_MEMBER( aussiebyte_state::ctc_z2_w )
-{
- m_ctc->trg3(1);
- m_ctc->trg3(0);
-}
-
-/***********************************************************
-
- Centronics ack
-
-************************************************************/
-WRITE_LINE_MEMBER( aussiebyte_state::write_centronics_busy )
-{
- m_centronics_busy = state;
-}
-
-/***********************************************************
-
- Speech ack
-
-************************************************************/
-WRITE_LINE_MEMBER( aussiebyte_state::votrax_w )
-{
- m_port28 = state;
-}
-
-
-/***********************************************************
-
- Floppy Disk
-
-************************************************************/
-
-WRITE_LINE_MEMBER( aussiebyte_state::fdc_intrq_w )
-{
- uint8_t data = (m_port19 & 0xbf) | (state ? 0x40 : 0);
- m_port19 = data;
-}
-
-WRITE_LINE_MEMBER( aussiebyte_state::fdc_drq_w )
-{
- uint8_t data = (m_port19 & 0x7f) | (state ? 0x80 : 0);
- m_port19 = data;
- state ^= 1; // inverter on pin38 of fdc
- m_port17_rdy = (m_port17_rdy & 0xfe) | (uint8_t)state;
- if (m_port17 == 0)
- m_dma->rdy_w(state);
-}
-
-static void aussiebyte_floppies(device_slot_interface &device)
-{
- device.option_add("525qd", FLOPPY_525_QD);
-}
-
-
-/***********************************************************
-
- Quickload
-
- This loads a .COM file to address 0x100 then jumps
- there. Sometimes .COM has been renamed to .CPM to
- prevent windows going ballistic. These can be loaded
- as well.
-
-************************************************************/
-
-QUICKLOAD_LOAD_MEMBER(aussiebyte_state::quickload_cb)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM);
-
- if (quickload_size >= 0xfd00)
- return image_init_result::FAIL;
-
- /* RAM must be banked in */
- m_port15 = true; // disable boot rom
- m_port1a = 4;
- membank("bankr0")->set_entry(m_port1a); /* enable correct program bank */
- membank("bankw0")->set_entry(m_port1a);
-
- /* Avoid loading a program if CP/M-80 is not in memory */
- if ((prog_space.read_byte(0) != 0xc3) || (prog_space.read_byte(5) != 0xc3))
- {
- machine_reset();
- return image_init_result::FAIL;
- }
-
- /* Load image to the TPA (Transient Program Area) */
- for (uint16_t i = 0; i < quickload_size; i++)
- {
- uint8_t data;
- if (image.fread( &data, 1) != 1)
- return image_init_result::FAIL;
- prog_space.write_byte(i+0x100, data);
- }
-
- /* clear out command tail */
- prog_space.write_byte(0x80, 0); prog_space.write_byte(0x81, 0);
-
- /* Roughly set SP basing on the BDOS position */
- m_maincpu->set_state_int(Z80_SP, 256 * prog_space.read_byte(7) - 0x400);
- m_maincpu->set_pc(0x100); // start program
-
- return image_init_result::PASS;
-}
-
-/***********************************************************
-
- Machine Driver
-
-************************************************************/
-void aussiebyte_state::machine_reset()
-{
- m_port15 = false;
- m_port17 = 0;
- m_port17_rdy = 0;
- m_port1a = 1;
- m_alpha_address = 0;
- m_graph_address = 0;
- membank("bankr0")->set_entry(16); // point at rom
- membank("bankw0")->set_entry(1); // always write to ram
- membank("bank1")->set_entry(2);
- membank("bank2")->set_entry(3);
- m_maincpu->reset();
-}
-
-void aussiebyte_state::aussiebyte(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, 16_MHz_XTAL / 4);
- m_maincpu->set_addrmap(AS_PROGRAM, &aussiebyte_state::aussiebyte_map);
- m_maincpu->set_addrmap(AS_IO, &aussiebyte_state::aussiebyte_io);
- m_maincpu->set_daisy_config(daisy_chain_intf);
-
- /* video hardware */
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
- screen.set_raw(16_MHz_XTAL, 952, 0, 640, 336, 0, 288);
- screen.set_screen_update("crtc", FUNC(sy6545_1_device::screen_update));
-
- GFXDECODE(config, "gfxdecode", "palette", gfx_crt8002);
- PALETTE(config, m_palette, palette_device::MONOCHROME);
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
- SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50);
- VOTRAX_SC01(config, m_votrax, 720000); // 720kHz? needs verify
- m_votrax->ar_callback().set(FUNC(aussiebyte_state::votrax_w));
- m_votrax->add_route(ALL_OUTPUTS, "mono", 1.00);
-
- /* devices */
- CENTRONICS(config, m_centronics, centronics_devices, "printer");
- m_centronics->set_data_input_buffer("cent_data_in");
- m_centronics->busy_handler().set(FUNC(aussiebyte_state::write_centronics_busy));
- INPUT_BUFFER(config, "cent_data_in");
- output_latch_device &cent_data_out(OUTPUT_LATCH(config, "cent_data_out"));
- m_centronics->set_output_latch(cent_data_out);
-
- Z80CTC(config, m_ctc, 16_MHz_XTAL / 4);
- m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_ctc->set_clk<0>(4.9152_MHz_XTAL / 4);
- m_ctc->set_clk<1>(4.9152_MHz_XTAL / 4);
- m_ctc->set_clk<2>(4.9152_MHz_XTAL / 4);
- m_ctc->zc_callback<0>().set("sio1", FUNC(z80sio_device::rxca_w));
- m_ctc->zc_callback<0>().append("sio1", FUNC(z80sio_device::txca_w));
- m_ctc->zc_callback<1>().set("sio1", FUNC(z80sio_device::rxtxcb_w));
- m_ctc->zc_callback<1>().append("sio2", FUNC(z80sio_device::rxca_w));
- m_ctc->zc_callback<1>().append("sio2", FUNC(z80sio_device::txca_w));
- m_ctc->zc_callback<2>().set(FUNC(aussiebyte_state::ctc_z2_w)); // SIO2 Ch B, CTC Ch 3
- m_ctc->zc_callback<2>().append("sio2", FUNC(z80sio_device::rxtxcb_w));
-
- Z80DMA(config, m_dma, 16_MHz_XTAL / 4);
- m_dma->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_dma->out_busreq_callback().set(FUNC(aussiebyte_state::busreq_w));
- // BAO, not used
- m_dma->in_mreq_callback().set(FUNC(aussiebyte_state::memory_read_byte));
- m_dma->out_mreq_callback().set(FUNC(aussiebyte_state::memory_write_byte));
- m_dma->in_iorq_callback().set(FUNC(aussiebyte_state::io_read_byte));
- m_dma->out_iorq_callback().set(FUNC(aussiebyte_state::io_write_byte));
-
- Z80PIO(config, m_pio1, 16_MHz_XTAL / 4);
- m_pio1->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_pio1->out_pa_callback().set("cent_data_out", FUNC(output_latch_device::bus_w));
- m_pio1->in_pb_callback().set("cent_data_in", FUNC(input_buffer_device::bus_r));
- m_pio1->out_ardy_callback().set(m_centronics, FUNC(centronics_device::write_strobe)).invert();
-
- Z80PIO(config, m_pio2, 16_MHz_XTAL / 4);
- m_pio2->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_pio2->out_pa_callback().set(FUNC(aussiebyte_state::port20_w));
-
- z80sio_device& sio1(Z80SIO(config, "sio1", 16_MHz_XTAL / 4));
- sio1.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- sio1.out_wrdya_callback().set(FUNC(aussiebyte_state::sio1_rdya_w));
- sio1.out_wrdyb_callback().set(FUNC(aussiebyte_state::sio1_rdyb_w));
-
- z80sio_device& sio2(Z80SIO(config, "sio2", 16_MHz_XTAL / 4));
- sio2.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- sio2.out_wrdya_callback().set(FUNC(aussiebyte_state::sio2_rdya_w));
- sio2.out_wrdyb_callback().set(FUNC(aussiebyte_state::sio2_rdyb_w));
- sio2.out_txda_callback().set("rs232", FUNC(rs232_port_device::write_txd));
- sio2.out_dtra_callback().set("rs232", FUNC(rs232_port_device::write_dtr));
- sio2.out_rtsa_callback().set("rs232", FUNC(rs232_port_device::write_rts));
-
- RS232_PORT(config, m_rs232, default_rs232_devices, "keyboard");
- m_rs232->rxd_handler().set("sio2", FUNC(z80sio_device::rxa_w));
-
- WD2797(config, m_fdc, 16_MHz_XTAL / 16);
- m_fdc->intrq_wr_callback().set(FUNC(aussiebyte_state::fdc_intrq_w));
- m_fdc->drq_wr_callback().set(FUNC(aussiebyte_state::fdc_drq_w));
- FLOPPY_CONNECTOR(config, "fdc:0", aussiebyte_floppies, "525qd", floppy_image_device::default_floppy_formats).enable_sound(true);
- FLOPPY_CONNECTOR(config, "fdc:1", aussiebyte_floppies, "525qd", floppy_image_device::default_floppy_formats).enable_sound(true);
-
- /* devices */
- SY6545_1(config, m_crtc, 16_MHz_XTAL / 8);
- m_crtc->set_screen("screen");
- m_crtc->set_show_border_area(false);
- m_crtc->set_char_width(8);
- m_crtc->set_update_row_callback(FUNC(aussiebyte_state::crtc_update_row));
- m_crtc->set_on_update_addr_change_callback(FUNC(aussiebyte_state::crtc_update_addr));
-
- MSM5832(config, m_rtc, 32.768_kHz_XTAL);
-
- /* quickload */
- QUICKLOAD(config, "quickload", "com,cpm", attotime::from_seconds(3)).set_load_callback(FUNC(aussiebyte_state::quickload_cb));
-}
-
-
-void aussiebyte_state::machine_start()
-{
- // Main ram is divided into 16k blocks (0-15). The boot rom is block number 16.
- // For convenience, bank 0 is permanently assigned to C000-FFFF
- uint8_t *main = memregion("roms")->base();
- uint8_t *ram = memregion("mram")->base();
-
- membank("bankr0")->configure_entries(0, 16, &ram[0x0000], 0x4000);
- membank("bankw0")->configure_entries(0, 16, &ram[0x0000], 0x4000);
- membank("bank1")->configure_entries(0, 16, &ram[0x0000], 0x4000);
- membank("bank2")->configure_entries(0, 16, &ram[0x0000], 0x4000);
- membank("bankr0")->configure_entry(16, &main[0x0000]);
-}
-
-
-/***********************************************************
-
- Game driver
-
-************************************************************/
-
-
-ROM_START(aussieby)
- ROM_REGION(0x4000, "roms", 0) // Size of bank 16
- ROM_LOAD( "knight_boot_0000.u27", 0x0000, 0x1000, CRC(1f200437) SHA1(80d1d208088b325c16a6824e2da605fb2b00c2ce) )
-
- ROM_REGION(0x800, "chargen", 0)
- ROM_LOAD( "8002.bin", 0x0000, 0x0800, CRC(fdd6eb13) SHA1(a094d416e66bdab916e72238112a6265a75ca690) )
-
- ROM_REGION(0x40000, "mram", ROMREGION_ERASE00) // main ram, 256k dynamic
- ROM_REGION(0x10000, "vram", ROMREGION_ERASEFF) // video ram, 64k dynamic
- ROM_REGION(0x00800, "aram", ROMREGION_ERASEFF) // attribute ram, 2k static
-ROM_END
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1984, aussieby, 0, 0, aussiebyte, aussiebyte, aussiebyte_state, empty_init, "SME Systems", "Aussie Byte II", MACHINE_IMPERFECT_GRAPHICS )