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Diffstat (limited to 'src/mess/drivers/bitgraph.c')
-rw-r--r--src/mess/drivers/bitgraph.c622
1 files changed, 0 insertions, 622 deletions
diff --git a/src/mess/drivers/bitgraph.c b/src/mess/drivers/bitgraph.c
deleted file mode 100644
index 8209fe9f20c..00000000000
--- a/src/mess/drivers/bitgraph.c
+++ /dev/null
@@ -1,622 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Sergey Svishchev
-/***************************************************************************
-
- BBN BitGraph -- monochrome, raster graphics (768x1024), serial terminal.
-
- Apparently had at least four hardware revisions, A-D, but which ROM
- revisions support which hardware is unclear. A Versabus slot, and
- various hardware and software options are mentioned in the docs. Best
- guesses follow.
-
- Onboard hardware (common to all revisions) is
- - 32K ROM
- - 128K RAM (includes frame buffer)
- - 3 serial ports, each driven by 6850 ACIA
- - some kind of baud rate generator, possibly COM8016
- - sync serial port, driven by 6854 but apparently never supported by ROM
- - 682x PIA
- - AY-3-891x PSG
- - ER2055 EAROM
- - DEC VT100 keyboard interface
-
- Rev A has additional 4th serial port for mouse (not supported by ROM 1.25).
- Rev A has 40 hz realtime clock, the rest use 1040 hz.
- Rev A-C use AY-3-8912 (with one external PIO port, to connect the EAROM).
- Rev D uses AY-3-8913 (no external ports; EAROM is wired to TBD).
- Rev B-D have onboard 8035 to talk to parallel printer and mouse.
- Rev B-D have more memory (at least up to 512K).
-
- ROM 1.25 doesn't support mouse, setup mode, pixel data upload and autowrap.
-
- Missing/incorrect emulation:
- Bidirectional keyboard interface (to drive LEDs and speaker).
- 8035.
- EAROM.
- 1.25 only -- clksync() is dummied out -- causes watchdog resets.
- Selectable memory size.
- Video enable/reverse video switch.
-
-****************************************************************************/
-
-#include "emu.h"
-
-#include "bus/centronics/ctronics.h"
-#include "bus/rs232/rs232.h"
-#include "cpu/m68000/m68000.h"
-#include "cpu/mcs48/mcs48.h"
-#include "machine/6821pia.h"
-#include "machine/6850acia.h"
-#include "machine/clock.h"
-#include "machine/com8116.h"
-#include "machine/er2055.h"
-#include "machine/i8243.h"
-#include "machine/mc6854.h"
-#include "machine/ram.h"
-#include "sound/ay8910.h"
-
-#include "bitgrpha.lh"
-#include "bitgrphb.lh"
-
-#define M68K_TAG "maincpu"
-#define PPU_TAG "ppu"
-
-#define ACIA0_TAG "acia0"
-#define ACIA1_TAG "acia1"
-#define ACIA2_TAG "acia2"
-#define ACIA3_TAG "acia3"
-#define RS232_H_TAG "rs232host"
-#define RS232_K_TAG "rs232kbd"
-#define RS232_D_TAG "rs232debug"
-#define RS232_M_TAG "rs232mouse"
-#define COM8116_A_TAG "com8116_a"
-#define COM8116_B_TAG "com8116_b"
-#define ADLC_TAG "adlc"
-#define PIA_TAG "pia"
-#define PSG_TAG "psg"
-#define EAROM_TAG "earom"
-
-#define VERBOSE_DBG 1 /* general debug messages */
-
-#define DBG_LOG(N,M,A) \
- do { \
- if(VERBOSE_DBG>=N) \
- { \
- if( M ) \
- logerror("%11.6f at %s: %-24s",machine().time().as_double(),machine().describe_context(),(char*)M ); \
- logerror A; \
- } \
- } while (0)
-
-class bitgraph_state : public driver_device
-{
-public:
- bitgraph_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, M68K_TAG)
- , m_ram(*this, RAM_TAG)
- , m_acia0(*this, ACIA0_TAG)
- , m_acia1(*this, ACIA1_TAG)
- , m_acia2(*this, ACIA2_TAG)
- , m_acia3(*this, ACIA3_TAG)
- , m_adlc(*this, ADLC_TAG)
- , m_dbrga(*this, COM8116_A_TAG)
- , m_dbrgb(*this, COM8116_B_TAG)
- , m_pia(*this, PIA_TAG)
- , m_psg(*this, PSG_TAG)
- , m_earom(*this, EAROM_TAG)
- , m_centronics(*this, "centronics")
- , m_screen(*this, "screen")
- { }
-
- DECLARE_READ8_MEMBER( pia_r );
- DECLARE_WRITE8_MEMBER( pia_w );
- DECLARE_READ8_MEMBER( pia_pa_r );
- DECLARE_READ8_MEMBER( pia_pb_r );
- DECLARE_WRITE8_MEMBER( pia_pa_w );
- DECLARE_WRITE8_MEMBER( pia_pb_w );
- DECLARE_READ_LINE_MEMBER( pia_ca1_r );
- DECLARE_READ_LINE_MEMBER( pia_cb1_r );
- DECLARE_WRITE_LINE_MEMBER( pia_ca2_w );
- DECLARE_WRITE_LINE_MEMBER( pia_cb2_w );
-
- DECLARE_WRITE16_MEMBER( baud_write );
- DECLARE_WRITE_LINE_MEMBER( com8116_a_fr_w );
- DECLARE_WRITE_LINE_MEMBER( com8116_a_ft_w );
- DECLARE_WRITE_LINE_MEMBER( com8116_b_fr_w );
- DECLARE_WRITE_LINE_MEMBER( com8116_b_ft_w );
-
- DECLARE_READ8_MEMBER( adlc_r );
- DECLARE_WRITE8_MEMBER( adlc_w );
-
- DECLARE_WRITE8_MEMBER( earom_write );
- DECLARE_WRITE8_MEMBER( misccr_write );
- DECLARE_WRITE_LINE_MEMBER( system_clock_write );
-
- UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-
- DECLARE_READ8_MEMBER( ppu_read );
- DECLARE_WRITE8_MEMBER( ppu_write );
- DECLARE_WRITE8_MEMBER( ppu_i8243_w );
-
-private:
- virtual void machine_start();
- virtual void machine_reset();
- required_device<cpu_device> m_maincpu;
- required_device<ram_device> m_ram;
- required_device<acia6850_device> m_acia0;
- required_device<acia6850_device> m_acia1;
- required_device<acia6850_device> m_acia2;
- optional_device<acia6850_device> m_acia3;
- optional_device<mc6854_device> m_adlc;
- required_device<com8116_device> m_dbrga;
- required_device<com8116_device> m_dbrgb;
- required_device<pia6821_device> m_pia;
- required_device<ay8912_device> m_psg;
- required_device<er2055_device> m_earom;
- optional_device<centronics_device> m_centronics;
- required_device<screen_device> m_screen;
-
- UINT8 *m_videoram;
- UINT8 m_misccr;
- UINT8 m_pia_a;
- UINT8 m_pia_b;
- UINT8 m_ppu[4];
-};
-
-static ADDRESS_MAP_START(bitgrapha_mem, AS_PROGRAM, 16, bitgraph_state)
- ADDRESS_MAP_UNMAP_HIGH
- AM_RANGE(0x000000, 0x007fff) AM_ROM
- AM_RANGE(0x010000, 0x010001) AM_DEVREADWRITE8(ACIA0_TAG, acia6850_device, data_r, data_w, 0xff00) // HOST
- AM_RANGE(0x010002, 0x010003) AM_DEVREADWRITE8(ACIA0_TAG, acia6850_device, status_r, control_w, 0xff00)
- AM_RANGE(0x010008, 0x010009) AM_DEVREADWRITE8(ACIA1_TAG, acia6850_device, data_r, data_w, 0x00ff) // KEYBOARD
- AM_RANGE(0x01000a, 0x01000b) AM_DEVREADWRITE8(ACIA1_TAG, acia6850_device, status_r, control_w, 0x00ff)
- AM_RANGE(0x010010, 0x010011) AM_DEVREADWRITE8(ACIA2_TAG, acia6850_device, data_r, data_w, 0x00ff) // DEBUGGER
- AM_RANGE(0x010012, 0x010013) AM_DEVREADWRITE8(ACIA2_TAG, acia6850_device, status_r, control_w, 0x00ff)
- AM_RANGE(0x010018, 0x010019) AM_DEVREADWRITE8(ACIA3_TAG, acia6850_device, data_r, data_w, 0x00ff) // POINTER
- AM_RANGE(0x01001a, 0x01001b) AM_DEVREADWRITE8(ACIA3_TAG, acia6850_device, status_r, control_w, 0x00ff)
- AM_RANGE(0x010020, 0x010027) AM_READWRITE8(adlc_r, adlc_w, 0xff00)
- AM_RANGE(0x010028, 0x01002f) AM_READWRITE8(pia_r, pia_w, 0xff00) // EAROM, PSG
- AM_RANGE(0x010030, 0x010031) AM_WRITE(baud_write)
- AM_RANGE(0x3e0000, 0x3fffff) AM_RAM
-ADDRESS_MAP_END
-
-static ADDRESS_MAP_START(bitgraphb_mem, AS_PROGRAM, 16, bitgraph_state)
- ADDRESS_MAP_UNMAP_HIGH
- AM_RANGE(0x000000, 0x007fff) AM_ROM
- AM_RANGE(0x010000, 0x010001) AM_DEVREADWRITE8(ACIA0_TAG, acia6850_device, data_r, data_w, 0xff00) // HOST
- AM_RANGE(0x010002, 0x010003) AM_DEVREADWRITE8(ACIA0_TAG, acia6850_device, status_r, control_w, 0xff00)
- AM_RANGE(0x010008, 0x010009) AM_DEVREADWRITE8(ACIA1_TAG, acia6850_device, data_r, data_w, 0x00ff) // KEYBOARD
- AM_RANGE(0x01000a, 0x01000b) AM_DEVREADWRITE8(ACIA1_TAG, acia6850_device, status_r, control_w, 0x00ff)
- AM_RANGE(0x010010, 0x010011) AM_DEVREADWRITE8(ACIA2_TAG, acia6850_device, data_r, data_w, 0x00ff) // DEBUGGER
- AM_RANGE(0x010012, 0x010013) AM_DEVREADWRITE8(ACIA2_TAG, acia6850_device, status_r, control_w, 0x00ff)
- AM_RANGE(0x01001a, 0x01001b) AM_WRITE8(misccr_write, 0x00ff)
- AM_RANGE(0x010020, 0x010027) AM_READWRITE8(adlc_r, adlc_w, 0xff00)
- AM_RANGE(0x010028, 0x01002f) AM_READWRITE8(pia_r, pia_w, 0xff00) // EAROM, PSG
- AM_RANGE(0x010030, 0x010031) AM_WRITE(baud_write)
-// AM_RANGE(0x010030, 0x010037) AM_READ8(ppu_read, 0x00ff)
-// AM_RANGE(0x010038, 0x01003f) AM_WRITE8(ppu_write, 0x00ff)
- AM_RANGE(0x380000, 0x3fffff) AM_RAM
-ADDRESS_MAP_END
-
-static INPUT_PORTS_START(bitgraph)
-INPUT_PORTS_END
-
-READ8_MEMBER(bitgraph_state::pia_r)
-{
- DBG_LOG(3,"PIA", ("R %d\n", offset));
- return m_pia->read(space, 3-offset);
-}
-
-WRITE8_MEMBER(bitgraph_state::pia_w)
-{
- DBG_LOG(3,"PIA", ("W %d < %02X\n", offset, data));
- return m_pia->write(space, 3-offset, data);
-}
-
-READ_LINE_MEMBER(bitgraph_state::pia_ca1_r)
-{
- return m_screen->frame_number() & 1;
-}
-
-WRITE_LINE_MEMBER(bitgraph_state::pia_cb2_w)
-{
- // XXX shut up verbose log
-}
-
-READ8_MEMBER(bitgraph_state::pia_pa_r)
-{
- UINT8 data = BIT(m_pia_b, 3) ? m_earom->data() : m_pia_a;
- DBG_LOG(2,"PIA", ("A == %02X (%s)\n", data, BIT(m_pia_b, 3) ? "earom" : "pia"));
- return data;
-}
-
-WRITE8_MEMBER(bitgraph_state::pia_pa_w)
-{
- DBG_LOG(2,"PIA", ("A <- %02X\n", data));
- m_pia_a = data;
-}
-
-/*
- B0 O: BC1 to noisemaker.
- B1 O: BDIR to noisemaker.
- B2 O: Clock for EAROM.
- B3 O: CS1 for EAROM.
- B4 O: Enable HDLC Xmt interrupt.
- B5 O: Enable HDLC Rcv interrupt.
- B6 O: Clear Clock interrupt. Must write a 0 [clear interrupt], then a 1.
- B7 I: EVEN field ??
-*/
-READ8_MEMBER(bitgraph_state::pia_pb_r)
-{
- DBG_LOG(2,"PIA", ("B == %02X\n", m_pia_b));
- return m_pia_b;
-}
-
-WRITE8_MEMBER(bitgraph_state::pia_pb_w)
-{
- DBG_LOG(2,"PIA", ("B <- %02X\n", data));
- m_pia_b = data;
-
- switch (m_pia_b & 0x03) {
- case 2: m_psg->data_w(space, 0, m_pia_a); break;
- case 3: m_psg->address_w(space, 0, m_pia_a); break;
- }
-
- if (BIT(m_pia_b, 3)) {
- DBG_LOG(2,"EAROM", ("data <- %02X\n", m_pia_a));
- m_earom->set_data(m_pia_a);
- }
- // CS1, ~CS2, C1, C2, CK
- m_earom->set_control(BIT(m_pia_b, 3), BIT(m_pia_b, 3), BIT(m_pia_a, 6), BIT(m_pia_a, 7), BIT(m_pia_b, 2));
-
- if (!BIT(m_pia_b, 6)) {
- m_maincpu->set_input_line(M68K_IRQ_6, CLEAR_LINE);
- }
-}
-
-WRITE8_MEMBER(bitgraph_state::earom_write)
-{
- DBG_LOG(2,"EAROM", ("addr <- %02X (%02X)\n", data & 0x3f, data));
- m_earom->set_address(data & 0x3f);
-}
-
-// written once and never changed
-WRITE8_MEMBER(bitgraph_state::misccr_write)
-{
- DBG_LOG(1,"MISCCR", ("<- %02X (DTR %d MAP %d)\n", data, BIT(data, 3), (data & 3)));
- m_misccr = data;
-}
-
-WRITE_LINE_MEMBER(bitgraph_state::system_clock_write)
-{
- if (!BIT(m_pia_b, 6)) {
- m_maincpu->set_input_line(M68K_IRQ_6, CLEAR_LINE);
- return;
- }
- if (state) {
- m_maincpu->set_input_line_and_vector(M68K_IRQ_6, ASSERT_LINE, M68K_INT_ACK_AUTOVECTOR);
- } else {
- m_maincpu->set_input_line(M68K_IRQ_6, CLEAR_LINE);
- }
-}
-
-WRITE16_MEMBER(bitgraph_state::baud_write)
-{
- DBG_LOG(1,"Baud", ("%04X\n", data));
- m_dbrgb->str_w(data & 15); // 2 DBG
- m_dbrga->stt_w((data >> 4) & 15); // 1 KBD
- m_dbrgb->stt_w((data >> 8) & 15); // 3 PNT
- m_dbrga->str_w((data >> 12) & 15); // 0 HOST
-}
-
-WRITE_LINE_MEMBER(bitgraph_state::com8116_a_fr_w)
-{
- m_acia0->write_txc(state);
- m_acia0->write_rxc(state);
-}
-
-WRITE_LINE_MEMBER(bitgraph_state::com8116_a_ft_w)
-{
- m_acia1->write_txc(state);
- m_acia1->write_rxc(state);
-}
-
-WRITE_LINE_MEMBER(bitgraph_state::com8116_b_fr_w)
-{
- m_acia2->write_txc(state);
- m_acia2->write_rxc(state);
-}
-
-WRITE_LINE_MEMBER(bitgraph_state::com8116_b_ft_w)
-{
- if (m_acia3) {
- m_acia3->write_txc(state);
- m_acia3->write_rxc(state);
- }
-}
-
-READ8_MEMBER(bitgraph_state::adlc_r)
-{
- DBG_LOG(1,"ADLC", ("R %d\n", offset));
- return m_adlc ? m_adlc->read(space, 3-offset) : 0xff;
-}
-
-WRITE8_MEMBER(bitgraph_state::adlc_w)
-{
- DBG_LOG(1,"ADLC", ("W %d < %02X\n", offset, data));
- if (m_adlc) return m_adlc->write(space, 3-offset, data);
-}
-
-UINT32 bitgraph_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- UINT8 gfx=0;
- int x,y;
-
- for (y = 0; y < 768; y++)
- {
- UINT16 *p = &bitmap.pix16(y);
-
- for (x = 0; x < 1024/8; x+=2)
- {
- gfx = m_videoram[ (x+1) | (y<<7)];
-
- *p++ = BIT(gfx, 7);
- *p++ = BIT(gfx, 6);
- *p++ = BIT(gfx, 5);
- *p++ = BIT(gfx, 4);
- *p++ = BIT(gfx, 3);
- *p++ = BIT(gfx, 2);
- *p++ = BIT(gfx, 1);
- *p++ = BIT(gfx, 0);
-
- gfx = m_videoram[ x | (y<<7)];
-
- *p++ = BIT(gfx, 7);
- *p++ = BIT(gfx, 6);
- *p++ = BIT(gfx, 5);
- *p++ = BIT(gfx, 4);
- *p++ = BIT(gfx, 3);
- *p++ = BIT(gfx, 2);
- *p++ = BIT(gfx, 1);
- *p++ = BIT(gfx, 0);
- }
- }
- return 0;
-}
-
-READ8_MEMBER(bitgraph_state::ppu_read)
-{
- UINT8 data = m_ppu[offset];
- DBG_LOG(1,"PPU", ("%d == %02X\n", offset, data));
- return data;
-}
-
-WRITE8_MEMBER(bitgraph_state::ppu_write)
-{
- DBG_LOG(1,"PPU", ("%d <- %02X\n", offset, data));
- m_ppu[offset] = data;
-}
-
-#ifdef UNUSED_FUNCTION
-static ADDRESS_MAP_START(ppu_io, AS_IO, 8, bitgraph_state)
-// AM_RANGE(0x00, 0x00) AM_READ(ppu_irq)
-// AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1)
-// AM_RANGE(MCS48_PORT_T0, MCS48_PORT_T0) AM_READ(ppu_t0_r)
- AM_RANGE(MCS48_PORT_PROG, MCS48_PORT_PROG) AM_DEVWRITE("i8243", i8243_device, i8243_prog_w)
-ADDRESS_MAP_END
-#endif
-
-/*
- p4 O: Centronics data 3..0
- p5 O: Centronics data 7..4
- p6 O: Centronics control
- p7 I: Centronics status
-*/
-WRITE8_MEMBER(bitgraph_state::ppu_i8243_w)
-{
- DBG_LOG(1,"PPU", ("8243 %d <- %02X\n", offset + 4, data));
- switch (offset) {
- case 0:
- m_centronics->write_data0(BIT(data, 0));
- m_centronics->write_data1(BIT(data, 1));
- m_centronics->write_data2(BIT(data, 2));
- m_centronics->write_data3(BIT(data, 3));
- break;
- case 1:
- m_centronics->write_data4(BIT(data, 0));
- m_centronics->write_data5(BIT(data, 1));
- m_centronics->write_data6(BIT(data, 2));
- m_centronics->write_data7(BIT(data, 3));
- break;
- case 2:
- m_centronics->write_strobe(BIT(data, 0));
- // 1: Paper instruction
- m_centronics->write_init(BIT(data, 2));
- break;
- case 3:
- m_centronics->write_ack(BIT(data, 0));
- m_centronics->write_busy(BIT(data, 1));
- m_centronics->write_perror(BIT(data, 2));
- m_centronics->write_select(BIT(data, 3));
- break;
- }
-}
-
-
-void bitgraph_state::machine_start()
-{
- m_videoram = (UINT8 *)m_maincpu->space(AS_PROGRAM).get_write_ptr(0x3e0000);
-}
-
-void bitgraph_state::machine_reset()
-{
- m_maincpu->reset();
- m_misccr = 0;
- m_pia_a = 0;
- m_pia_b = 0;
- memset(m_ppu, 0, sizeof(m_ppu));
-}
-
-
-static MACHINE_CONFIG_FRAGMENT( bg_motherboard )
- MCFG_SCREEN_ADD("screen", RASTER)
- MCFG_SCREEN_REFRESH_RATE(40)
- MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
- MCFG_SCREEN_SIZE(1024, 768)
- MCFG_SCREEN_VISIBLE_AREA(0, 1024-1, 0, 768-1)
- MCFG_SCREEN_UPDATE_DRIVER(bitgraph_state, screen_update)
-
- MCFG_SCREEN_PALETTE("palette")
- MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
-
- MCFG_DEVICE_ADD(ACIA0_TAG, ACIA6850, 0)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE(RS232_H_TAG, rs232_port_device, write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE(RS232_H_TAG, rs232_port_device, write_rts))
- MCFG_ACIA6850_IRQ_HANDLER(DEVWRITELINE(M68K_TAG, m68000_device, write_irq1))
-
- MCFG_RS232_PORT_ADD(RS232_H_TAG, default_rs232_devices, "null_modem")
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE(ACIA0_TAG, acia6850_device, write_rxd))
- MCFG_RS232_DCD_HANDLER(DEVWRITELINE(ACIA0_TAG, acia6850_device, write_dcd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE(ACIA0_TAG, acia6850_device, write_cts))
-
- MCFG_DEVICE_ADD(ACIA1_TAG, ACIA6850, 0)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE(RS232_K_TAG, rs232_port_device, write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE(RS232_K_TAG, rs232_port_device, write_rts))
- MCFG_ACIA6850_IRQ_HANDLER(DEVWRITELINE(M68K_TAG, m68000_device, write_irq1))
-
- MCFG_RS232_PORT_ADD(RS232_K_TAG, default_rs232_devices, "keyboard")
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE(ACIA1_TAG, acia6850_device, write_rxd))
- MCFG_RS232_DCD_HANDLER(DEVWRITELINE(ACIA1_TAG, acia6850_device, write_dcd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE(ACIA1_TAG, acia6850_device, write_cts))
-
- MCFG_DEVICE_ADD(ACIA2_TAG, ACIA6850, 0)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE(RS232_D_TAG, rs232_port_device, write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE(RS232_D_TAG, rs232_port_device, write_rts))
- MCFG_ACIA6850_IRQ_HANDLER(DEVWRITELINE(M68K_TAG, m68000_device, write_irq1))
-
- MCFG_RS232_PORT_ADD(RS232_D_TAG, default_rs232_devices, NULL)
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE(ACIA2_TAG, acia6850_device, write_rxd))
- MCFG_RS232_DCD_HANDLER(DEVWRITELINE(ACIA2_TAG, acia6850_device, write_dcd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE(ACIA2_TAG, acia6850_device, write_cts))
-
- // XXX actual part may be something else
- MCFG_DEVICE_ADD(COM8116_A_TAG, COM8116, XTAL_5_0688MHz)
- MCFG_COM8116_FR_HANDLER(WRITELINE(bitgraph_state, com8116_a_fr_w))
- MCFG_COM8116_FT_HANDLER(WRITELINE(bitgraph_state, com8116_a_ft_w))
-
- MCFG_DEVICE_ADD(COM8116_B_TAG, COM8116, XTAL_5_0688MHz)
- MCFG_COM8116_FR_HANDLER(WRITELINE(bitgraph_state, com8116_b_fr_w))
- MCFG_COM8116_FT_HANDLER(WRITELINE(bitgraph_state, com8116_b_ft_w))
-
- MCFG_DEVICE_ADD(PIA_TAG, PIA6821, 0)
- MCFG_PIA_READCA1_HANDLER(READLINE(bitgraph_state, pia_ca1_r))
- MCFG_PIA_CB2_HANDLER(WRITELINE(bitgraph_state, pia_cb2_w))
- MCFG_PIA_READPA_HANDLER(READ8(bitgraph_state, pia_pa_r))
- MCFG_PIA_WRITEPA_HANDLER(WRITE8(bitgraph_state, pia_pa_w))
- MCFG_PIA_READPB_HANDLER(READ8(bitgraph_state, pia_pb_r))
- MCFG_PIA_WRITEPB_HANDLER(WRITE8(bitgraph_state, pia_pb_w))
-
- MCFG_ER2055_ADD(EAROM_TAG)
-
- MCFG_SPEAKER_STANDARD_MONO("mono")
- MCFG_SOUND_ADD(PSG_TAG, AY8912, XTAL_1_2944MHz)
- MCFG_AY8910_PORT_A_WRITE_CB(WRITE8(bitgraph_state, earom_write))
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
-MACHINE_CONFIG_END
-
-#ifdef UNUSED_FUNCTION
-static MACHINE_CONFIG_FRAGMENT( bg_ppu )
- MCFG_CPU_ADD(PPU_TAG, I8035, XTAL_6_9MHz)
- MCFG_CPU_IO_MAP(ppu_io)
-
- MCFG_I8243_ADD("i8243", NOOP, WRITE8(bitgraph_state, ppu_i8243_w))
-
- MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer")
- MCFG_CENTRONICS_ACK_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit6))
- MCFG_CENTRONICS_BUSY_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit7))
- MCFG_CENTRONICS_FAULT_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit4))
- MCFG_CENTRONICS_PERROR_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit5))
-
- MCFG_DEVICE_ADD("cent_status_in", INPUT_BUFFER, 0)
-
- MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")
-MACHINE_CONFIG_END
-#endif
-
-static MACHINE_CONFIG_START( bitgrpha, bitgraph_state )
- MCFG_CPU_ADD(M68K_TAG, M68000, XTAL_6_9MHz)
- MCFG_CPU_PROGRAM_MAP(bitgrapha_mem)
-
- MCFG_FRAGMENT_ADD(bg_motherboard)
-
- MCFG_DEVICE_ADD("system_clock", CLOCK, 40)
- MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(bitgraph_state, system_clock_write))
-
- MCFG_DEVICE_ADD(ACIA3_TAG, ACIA6850, 0)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE(RS232_M_TAG, rs232_port_device, write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE(RS232_M_TAG, rs232_port_device, write_rts))
- MCFG_ACIA6850_IRQ_HANDLER(DEVWRITELINE(M68K_TAG, m68000_device, write_irq1))
-
- MCFG_RS232_PORT_ADD(RS232_M_TAG, default_rs232_devices, NULL)
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE(ACIA3_TAG, acia6850_device, write_rxd))
- MCFG_RS232_DCD_HANDLER(DEVWRITELINE(ACIA3_TAG, acia6850_device, write_dcd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE(ACIA3_TAG, acia6850_device, write_cts))
-
- MCFG_DEFAULT_LAYOUT(layout_bitgrpha)
-
- MCFG_RAM_ADD(RAM_TAG)
- MCFG_RAM_DEFAULT_SIZE("128K")
-MACHINE_CONFIG_END
-
-static MACHINE_CONFIG_START( bitgrphb, bitgraph_state )
- MCFG_CPU_ADD(M68K_TAG, M68000, XTAL_6_9MHz)
- MCFG_CPU_PROGRAM_MAP(bitgraphb_mem)
-
- MCFG_FRAGMENT_ADD(bg_motherboard)
-// MCFG_FRAGMENT_ADD(bg_ppu)
-
- MCFG_DEVICE_ADD("system_clock", CLOCK, 1040)
- MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(bitgraph_state, system_clock_write))
-
- MCFG_DEFAULT_LAYOUT(layout_bitgrphb)
-
- MCFG_RAM_ADD(RAM_TAG)
- MCFG_RAM_DEFAULT_SIZE("512K")
-MACHINE_CONFIG_END
-
-/* ROM definition */
-ROM_START( bitgrpha )
- ROM_REGION16_BE( 0x8000, M68K_TAG, 0 )
- ROM_LOAD( "bg125.rom", 0x000000, 0x008000, CRC(b86c974e) SHA1(5367db80a856444c2a55de22b69a13f97a62f602))
- ROM_FILL( 0x38e4, 1, 0x4e ) // disable clksync()
- ROM_FILL( 0x38e5, 1, 0x75 )
-ROM_END
-
-ROM_START( bitgrphb )
- ROM_REGION16_BE( 0x8000, M68K_TAG, 0 )
- ROM_DEFAULT_BIOS("2.33A")
-
- ROM_SYSTEM_BIOS(0, "2.33A", "rev 2.33 Alpha' ROM")
- ROMX_LOAD( "bg2.32lo_u10.bin", 0x004001, 0x002000, CRC(6a702a96) SHA1(acdf1ba34038b4ccafb5b8069e70ae57a3b8a7e0), ROM_BIOS(1)|ROM_SKIP(1))
- ROMX_LOAD( "bg2.32hi_u12.bin", 0x004000, 0x002000, CRC(a282a2c8) SHA1(ea7e4d4e197201c8944acef54479d5c2b26d409f), ROM_BIOS(1)|ROM_SKIP(1))
- ROMX_LOAD( "bg2.32lo_u11.bin", 0x000001, 0x002000, CRC(46912afd) SHA1(c1f771adc1ef62b1fb1b904ed1d2a61009e24f55), ROM_BIOS(1)|ROM_SKIP(1))
- ROMX_LOAD( "bg2.32hi_u13.bin", 0x000000, 0x002000, CRC(731df44f) SHA1(8c238b5943b8864e539f92891a0ffa6ddd4fc779), ROM_BIOS(1)|ROM_SKIP(1))
-
- ROM_SYSTEM_BIOS(1, "3.0P", "rev 3.0P ROM")
- ROMX_LOAD( "bg5173_u10.bin", 0x004001, 0x002000, CRC(40014850) SHA1(ef0b7da58a5183391a3a03947882197f25694518), ROM_BIOS(2)|ROM_SKIP(1))
- ROMX_LOAD( "bg5175_u12.bin", 0x004000, 0x002000, CRC(c2c4cc6c) SHA1(dbbce7cb58b4cef1557a834cbb07b3ace298cb8b), ROM_BIOS(2)|ROM_SKIP(1))
- ROMX_LOAD( "bg5174_u11.bin", 0x000001, 0x002000, CRC(639768b9) SHA1(68f623bcf3bb75390ba2b17efc067cf25f915ec0), ROM_BIOS(2)|ROM_SKIP(1))
- ROMX_LOAD( "bg5176_u13.bin", 0x000000, 0x002000, CRC(984e7e8c) SHA1(dd13cbaff96a8b9936ae8cb07205c6abe8b27b6e), ROM_BIOS(2)|ROM_SKIP(1))
-
- ROM_SYSTEM_BIOS(2, "ramtest", "RAM test")
- ROMX_LOAD( "ramtest.rom", 0x000000, 0x004000, CRC(fabe3b34) SHA1(4d892a2ed2b7ea12d83843609981be9069611d43), ROM_BIOS(3))
-
- ROM_REGION( 0x800, PPU_TAG, 0 )
- ROM_LOAD( "bg_mouse_u9.bin", 0x0000, 0x0800, CRC(fd827ff5) SHA1(6d4a8e9b18c7610c5cfde40464826d144d387601))
-ROM_END
-
-/* Driver */
-/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
-COMP( 1981, bitgrpha, 0, 0, bitgrpha, bitgraph, driver_device, 0, "BBN", "BitGraph rev A", MACHINE_IMPERFECT_KEYBOARD)
-COMP( 1982, bitgrphb, 0, 0, bitgrphb, bitgraph, driver_device, 0, "BBN", "BitGraph rev B", MACHINE_NOT_WORKING|MACHINE_IMPERFECT_KEYBOARD)