From bbe75c8ea54a5f66328485783a5110ef7c68c730 Mon Sep 17 00:00:00 2001 From: AJR Date: Mon, 21 Jan 2019 17:04:29 -0500 Subject: freeway: Add UART and preliminary gfxdecode (nw) --- src/mame/drivers/freeway.cpp | 52 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 49 insertions(+), 3 deletions(-) diff --git a/src/mame/drivers/freeway.cpp b/src/mame/drivers/freeway.cpp index ae09ad2c498..38db5cdcc93 100644 --- a/src/mame/drivers/freeway.cpp +++ b/src/mame/drivers/freeway.cpp @@ -9,11 +9,14 @@ *********************************************************************/ #include "emu.h" +#include "bus/rs232/rs232.h" #include "cpu/i86/i86.h" +#include "machine/ins8250.h" #include "machine/pit8253.h" #include "machine/pic8259.h" #include "machine/timekpr.h" #include "video/mc6845.h" +#include "emupal.h" #include "screen.h" class freeway_state : public driver_device @@ -31,6 +34,8 @@ public: void freeway(machine_config &config); + DECLARE_WRITE_LINE_MEMBER(nmi_w); + protected: virtual void machine_start() override; @@ -66,6 +71,11 @@ void freeway_state::lamps_w(u8 data) m_lamps[n] = BIT(data, n); } +WRITE_LINE_MEMBER(freeway_state::nmi_w) +{ + m_maincpu->set_input_line(INPUT_LINE_NMI, state); +} + void freeway_state::mem_map(address_map &map) { map(0x00000, 0x07fff).ram(); @@ -79,6 +89,7 @@ void freeway_state::io_map(address_map &map) { map(0x0020, 0x0021).rw(m_pic, FUNC(pic8259_device::read), FUNC(pic8259_device::write)); map(0x0030, 0x0033).w("pit", FUNC(pit8254_device::write)); + map(0x0040, 0x0047).rw("uart", FUNC(ns16450_device::ins8250_r), FUNC(ns16450_device::ins8250_w)); map(0x00a3, 0x00a3).w(FUNC(freeway_state::lamps_w)); map(0x00d0, 0x00d0).portr("CONFIG"); map(0x03d0, 0x03d0).w("crtc", FUNC(mc6845_device::address_w)); @@ -89,11 +100,29 @@ static INPUT_PORTS_START(freeway) PORT_START("CONFIG") PORT_DIPNAME(0x01, 0x00, "Screen Format") PORT_DIPSETTING(0x00, "PAL") - PORT_DIPSETTING(0x01, "NTSC?") // 264 lines total, 58.3 Hz refresh + PORT_DIPSETTING(0x01, "NTSC?") // 268 lines total, 58.3 Hz refresh PORT_BIT(0x08, 0x08, IPT_UNKNOWN) PORT_BIT(0xf6, 0xf6, IPT_UNKNOWN) // probably unused + + PORT_START("RESET") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_MEMORY_RESET) PORT_WRITE_LINE_DEVICE_MEMBER(DEVICE_SELF, freeway_state, nmi_w) INPUT_PORTS_END +static const gfx_layout char_layout = +{ + 8,8, + RGN_FRAC(1,3), + 3, + { RGN_FRAC(2,3), RGN_FRAC(1,3), RGN_FRAC(0,3) }, + { 0, 1, 2, 3, 4, 5, 6, 7 }, + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, + 8*8, +}; + +static GFXDECODE_START(gfx_freeway) + GFXDECODE_ENTRY("gfx", 0, char_layout, 0x0, 1) +GFXDECODE_END + void freeway_state::freeway(machine_config &config) { I8088(config, m_maincpu, 10_MHz_XTAL / 2); // divider unknown @@ -113,12 +142,27 @@ void freeway_state::freeway(machine_config &config) screen.set_raw(10_MHz_XTAL / 2, 320, 0, 256, 312, 0, 256); screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update)); + PALETTE(config, "palette").set_entries(0x10); + GFXDECODE(config, "gfxdecode", "palette", gfx_freeway); + mc6845_device &crtc(MC6845(config, "crtc", 10_MHz_XTAL / 16)); crtc.set_char_width(8); crtc.set_show_border_area(false); crtc.set_screen("screen"); crtc.set_update_row_callback(FUNC(freeway_state::update_row), this); crtc.out_hsync_callback().set("pit", FUNC(pit8254_device::write_clk0)); // guess + + ns16450_device &uart(NS16450(config, "uart", 10_MHz_XTAL / 8)); // type unknown + uart.out_int_callback().set(m_pic, FUNC(pic8259_device::ir2_w)); + uart.out_tx_callback().set("rs232", FUNC(rs232_port_device::write_txd)); + uart.out_rts_callback().set("rs232", FUNC(rs232_port_device::write_rts)); + uart.out_dtr_callback().set("rs232", FUNC(rs232_port_device::write_dtr)); + + rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr)); + rs232.rxd_handler().set("uart", FUNC(ns16450_device::rx_w)); + rs232.cts_handler().set("uart", FUNC(ns16450_device::cts_w)); + rs232.dsr_handler().set("uart", FUNC(ns16450_device::dsr_w)); + rs232.dcd_handler().set("uart", FUNC(ns16450_device::dcd_w)); } // 8088 CPU @@ -134,11 +178,13 @@ ROM_START(freeway) ROM_REGION(0x10000, "program", 0) ROM_LOAD("vip88.bin", 0x00000, 0x10000, CRC(aeba6d5e) SHA1(bb84f7040bf1b6976cb2c50b1ffdc59ae88df223)) - ROM_REGION(0x20000, "gfx", 0) // loading might be wrong + ROM_REGION(0x18000, "gfx", 0) ROM_LOAD("sb_51.bin", 0x00000, 0x8000, CRC(d25bd328) SHA1(b8c692298f6dc5fd5ae2f9e7701e14b0436a95bb)) // xxx0xxxxxxxxxxx = 0xFF ROM_LOAD("sb_52.bin", 0x08000, 0x8000, CRC(f2b33acd) SHA1(e4786b4f00871d771aadacd9d6ec767691f4d939)) ROM_LOAD("sb_53.bin", 0x10000, 0x8000, CRC(50407ae6) SHA1(2c6c4803905bed5f27c6783f99a24f8dee62c19b)) - ROM_LOAD("sb_cor.bin", 0x18000, 0x8000, CRC(5f86a160) SHA1(f21b7e0e6a407371c252d6fde6fcb32a2682824c)) // 00000xxxxxxxxxx = 0xFF + + ROM_REGION(0x8000, "cor", 0) + ROM_LOAD("sb_cor.bin", 0x0000, 0x8000, CRC(5f86a160) SHA1(f21b7e0e6a407371c252d6fde6fcb32a2682824c)) // all 0xFF fill until 0x7C00; valid data is only 4 bits wide ROM_END -- cgit v1.2.3