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tv990/995: Add save state support and PC-style LPT port. [R. Belmont]
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arbee
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@ -3,10 +3,10 @@
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/***************************************************************************
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TeleVideo 990/995 terminal
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Driver by Carl and R. Belmont
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Thanks to Al Kossow.
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H/W:
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68000-P16 CPU (clock unknown, above 10 MHz it outruns the AT keyboard controller)
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16C452 dual 16450 (PC/AT standard) UART + PC-compatible Centronics (integrated into
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@ -14,7 +14,7 @@
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AMI MEGA-KBD-H-Q PS/2 keyboard interface on 990, PS/2 8042 on 995
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Televideo ASIC marked "134446-00 TVI1111-0 427"
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3x AS7C256 (32K x 8 SRAM)
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IRQs:
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2 = PS/2 keyboard
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3 = Centronics
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@ -24,7 +24,7 @@
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Video modes include 80 or 132 wide by 24, 25, 42, 43, 48, or 49 lines high plus an
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optional status bar
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Modes include TeleVideo 990, 950, and 955, Wyse WY-60, WY-150/120/50+/50, ANSI,
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Modes include TeleVideo 990, 950, and 955, Wyse WY-60, WY-150/120/50+/50, ANSI,
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DEC VT320/220, VT100/52, SCO Console, and PC TERM.
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****************************************************************************/
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@ -34,13 +34,15 @@
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#include "machine/ins8250.h"
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#include "machine/8042kbdc.h"
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#include "bus/rs232/rs232.h"
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#include "machine/pc_lpt.h"
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#include "machine/nvram.h"
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#include "sound/beep.h"
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#define UART0_TAG "ns16450_0"
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#define UART1_TAG "ns16450_1"
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#define UART0_TAG "ns16450_0"
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#define UART1_TAG "ns16450_1"
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#define RS232A_TAG "rs232a"
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#define RS232B_TAG "rs232b"
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#define LPT_TAG "lpt"
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class tv990_state : public driver_device
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{
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@ -71,16 +73,18 @@ public:
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virtual void machine_reset() override;
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virtual void machine_start() override;
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virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
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virtual void device_post_load() override;
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UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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DECLARE_READ16_MEMBER(tvi1111_r);
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DECLARE_WRITE16_MEMBER(tvi1111_w);
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DECLARE_READ8_MEMBER(kbdc_r);
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DECLARE_WRITE8_MEMBER(kbdc_w);
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WRITE_LINE_MEMBER(uart0_irq);
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WRITE_LINE_MEMBER(uart1_irq);
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DECLARE_WRITE_LINE_MEMBER(uart0_irq);
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DECLARE_WRITE_LINE_MEMBER(uart1_irq);
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DECLARE_WRITE_LINE_MEMBER(lpt_irq);
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INTERRUPT_GEN_MEMBER(vblank);
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DECLARE_INPUT_CHANGED_MEMBER(color);
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@ -100,7 +104,7 @@ INTERRUPT_GEN_MEMBER(tv990_state::vblank)
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void tv990_state::machine_start()
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{
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m_rowtimer = timer_alloc();
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save_item(NAME(tvi1111_regs));
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save_item(NAME(m_rowh));
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save_item(NAME(m_width));
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@ -124,11 +128,16 @@ WRITE_LINE_MEMBER(tv990_state::uart1_irq)
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m_maincpu->set_input_line(M68K_IRQ_4, state);
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}
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WRITE_LINE_MEMBER(tv990_state::lpt_irq)
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{
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m_maincpu->set_input_line(M68K_IRQ_3, state);
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}
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READ16_MEMBER(tv990_state::tvi1111_r)
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{
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if (offset == (0x32/2))
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{
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tvi1111_regs[offset] |= 8; // loop at 109ca wants this set
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tvi1111_regs[offset] |= 8; // loop at 109ca wants this set
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}
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else if(offset == 0x1d)
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{
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@ -230,7 +239,7 @@ UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
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attr ^= attrchg;
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}
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if (attr & 0x4) // inverse video?
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if (attr & 0x4) // inverse video?
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{
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palette[1] = m_palette->pen(0);
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palette[0] = (attr & 0x10) ? m_palette->pen(1) : m_palette->pen(2);
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@ -295,13 +304,14 @@ WRITE8_MEMBER(tv990_state::kbdc_w)
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static ADDRESS_MAP_START(tv990_mem, AS_PROGRAM, 16, tv990_state)
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AM_RANGE(0x000000, 0x03ffff) AM_ROM AM_REGION("maincpu", 0)
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AM_RANGE(0x060000, 0x06ffff) AM_RAM AM_SHARE("vram") // character/attribute RAM
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AM_RANGE(0X080000, 0X087fff) AM_RAM AM_SHARE("fontram") // font RAM
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AM_RANGE(0x060000, 0x06ffff) AM_RAM AM_SHARE("vram") // character/attribute RAM
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AM_RANGE(0X080000, 0X087fff) AM_RAM AM_SHARE("fontram") // font RAM
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AM_RANGE(0x090000, 0x0900ff) AM_READWRITE(tvi1111_r, tvi1111_w)
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AM_RANGE(0x0a0000, 0x0a000f) AM_DEVREADWRITE8(UART0_TAG, ns16450_device, ins8250_r, ins8250_w, 0x00ff)
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AM_RANGE(0x0a0010, 0x0a001f) AM_DEVREADWRITE8(UART1_TAG, ns16450_device, ins8250_r, ins8250_w, 0x00ff)
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AM_RANGE(0x0a0028, 0x0a002d) AM_DEVREADWRITE8(LPT_TAG, pc_lpt_device, read, write, 0x00ff)
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AM_RANGE(0x0b0000, 0x0b0003) AM_READWRITE8(kbdc_r, kbdc_w, 0x00ff)
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AM_RANGE(0x0c0000, 0x0c7fff) AM_RAM AM_SHARE("nvram")// work RAM
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AM_RANGE(0x0c0000, 0x0c7fff) AM_RAM AM_SHARE("nvram")// work RAM
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ADDRESS_MAP_END
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/* Input ports */
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@ -339,19 +349,24 @@ INPUT_CHANGED_MEMBER(tv990_state::color)
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void tv990_state::machine_reset()
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{
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m_rowtimer->adjust(m_screen->time_until_pos(0));
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memset(tvi1111_regs, 0, sizeof(tvi1111_regs));
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m_rowh = 16;
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m_width = 80;
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m_height = 50;
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}
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void tv990_state::device_post_load()
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{
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m_screen->set_visible_area(0, m_width * 16 - 1, 0, m_height * m_rowh - 1);
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}
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static MACHINE_CONFIG_START( tv990, tv990_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", M68000, 14967500) // verified (59.86992/4)
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MCFG_CPU_ADD("maincpu", M68000, 14967500) // verified (59.86992/4)
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MCFG_CPU_PROGRAM_MAP(tv990_mem)
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MCFG_CPU_VBLANK_INT_DRIVER("screen", tv990_state, vblank)
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MCFG_SCREEN_ADD_MONOCHROME("screen", RASTER, rgb_t::green)
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MCFG_SCREEN_UPDATE_DRIVER(tv990_state, screen_update)
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MCFG_SCREEN_SIZE(132*16, 50*16)
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@ -370,6 +385,9 @@ static MACHINE_CONFIG_START( tv990, tv990_state )
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MCFG_INS8250_OUT_RTS_CB(DEVWRITELINE(RS232B_TAG, rs232_port_device, write_rts))
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MCFG_INS8250_OUT_TX_CB(DEVWRITELINE(RS232B_TAG, rs232_port_device, write_txd))
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MCFG_INS8250_OUT_INT_CB(WRITELINE(tv990_state, uart1_irq))
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MCFG_DEVICE_ADD(LPT_TAG, PC_LPT, 0)
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MCFG_PC_LPT_IRQ_HANDLER(WRITELINE(tv990_state, lpt_irq))
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MCFG_RS232_PORT_ADD(RS232A_TAG, default_rs232_devices, nullptr)
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MCFG_RS232_RXD_HANDLER(DEVWRITELINE(UART0_TAG, ns16450_device, rx_w))
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@ -380,7 +398,7 @@ static MACHINE_CONFIG_START( tv990, tv990_state )
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MCFG_RS232_RXD_HANDLER(DEVWRITELINE(UART1_TAG, ns16450_device, rx_w))
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MCFG_RS232_DCD_HANDLER(DEVWRITELINE(UART1_TAG, ns16450_device, dcd_w))
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MCFG_RS232_CTS_HANDLER(DEVWRITELINE(UART1_TAG, ns16450_device, cts_w))
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MCFG_DEVICE_ADD("pc_kbdc", KBDC8042, 0)
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MCFG_KBDC8042_KEYBOARD_TYPE(KBDC8042_AT386)
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MCFG_KBDC8042_INPUT_BUFFER_FULL_CB(INPUTLINE("maincpu", M68K_IRQ_2))
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@ -395,16 +413,16 @@ MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( tv990 )
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ROM_REGION( 0x40000, "maincpu", 0 )
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ROM_LOAD16_BYTE( "180003-89_u3.bin", 0x000000, 0x010000, CRC(0465fc55) SHA1(b8874ce54bf2bf4f77664194d2f23c0e4e6ccbe9) )
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ROM_LOAD16_BYTE( "180003-90_u4.bin", 0x000001, 0x010000, CRC(fad7d77d) SHA1(f1114a4a07c8b4ffa0323a2e7ce03d82a386f7d3) )
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ROM_LOAD16_BYTE( "180003-89_u3.bin", 0x000000, 0x010000, CRC(0465fc55) SHA1(b8874ce54bf2bf4f77664194d2f23c0e4e6ccbe9) )
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ROM_LOAD16_BYTE( "180003-90_u4.bin", 0x000001, 0x010000, CRC(fad7d77d) SHA1(f1114a4a07c8b4ffa0323a2e7ce03d82a386f7d3) )
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ROM_END
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ROM_START( tv995 )
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ROM_REGION( 0x40000, "maincpu", 0 )
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ROM_LOAD16_BYTE( "995-65_u3.bin", 0x000000, 0x020000, CRC(2d71b6fe) SHA1(a2a3406c19308eb9232db319ea8f151949b2ac74) )
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ROM_LOAD16_BYTE( "995-65_u4.bin", 0x000001, 0x020000, CRC(dc002af2) SHA1(9608e7a729c5ac0fc58f673eaf441d2f4f591ec6) )
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ROM_LOAD16_BYTE( "995-65_u3.bin", 0x000000, 0x020000, CRC(2d71b6fe) SHA1(a2a3406c19308eb9232db319ea8f151949b2ac74) )
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ROM_LOAD16_BYTE( "995-65_u4.bin", 0x000001, 0x020000, CRC(dc002af2) SHA1(9608e7a729c5ac0fc58f673eaf441d2f4f591ec6) )
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ROM_END
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/* Driver */
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COMP( 1992, tv990, 0, 0, tv990, tv990, driver_device, 0, "TeleVideo", "TeleVideo 990", 0)
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COMP( 1994, tv995, 0, 0, tv990, tv990, driver_device, 0, "TeleVideo", "TeleVideo 995-65", 0)
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COMP( 1992, tv990, 0, 0, tv990, tv990, driver_device, 0, "TeleVideo", "TeleVideo 990", MACHINE_SUPPORTS_SAVE)
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COMP( 1994, tv995, 0, 0, tv990, tv990, driver_device, 0, "TeleVideo", "TeleVideo 995-65", MACHINE_SUPPORTS_SAVE)
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