From 940d6b61dbf1978cf300c29852e85c9f6e6f8566 Mon Sep 17 00:00:00 2001 From: Dirk Best Date: Sat, 20 Jul 2019 11:13:43 +0200 Subject: falco5220: Various improvements - Add RAM banking - Crude screen rendering, set amber screen color - Add RAM based gfxdecode - Identify keyboard addresses --- src/mame/drivers/falco5220.cpp | 95 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 91 insertions(+), 4 deletions(-) diff --git a/src/mame/drivers/falco5220.cpp b/src/mame/drivers/falco5220.cpp index a90fa022edd..d94a872ef7b 100644 --- a/src/mame/drivers/falco5220.cpp +++ b/src/mame/drivers/falco5220.cpp @@ -27,9 +27,11 @@ #include "emu.h" //#include "bus/rs232/rs232.h" #include "cpu/z80/z80.h" +#include "machine/bankdev.h" #include "machine/nvram.h" #include "machine/z80ctc.h" #include "machine/z80sio.h" +#include "emupal.h" #include "screen.h" class falco5220_state : public driver_device @@ -38,8 +40,12 @@ public: falco5220_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") + , m_rambank(*this, "rambank") , m_screen(*this, "screen") , m_rombank(*this, "rombank") + , m_ram(*this, "ram") + , m_charram(*this, "charram") + , m_5a(0) { } @@ -53,40 +59,94 @@ private: u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void rombank_w(u8 data); + void rambank_w(u8 data); + void unk5a_w(u8 data); void mem_map(address_map &map); + void bank_map(address_map &map); void io_map(address_map &map); required_device m_maincpu; + required_device m_rambank; required_device m_screen; - required_memory_bank m_rombank; - //required_shared_ptr m_cram; // 1x or 2x NEC D43256C-10L - //required_shared_ptr m_aram; // 1x or 2x NEC D43256C-10L + required_shared_ptr m_ram; + required_shared_ptr m_charram; + + u8 m_5a; }; u32 falco5220_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { + offs_t start = m_5a ? 0x0000 : 0x2000; + + for (int col = 0; col < 25; col++) + { + for (int row = 0; row < 80; row++) + { + u8 code = m_ram[start + col * 80 + row]; + u8 attr = m_ram[start + 0x1000 + col * 80 + row]; + + for (int y = 0; y < 16; y++) + { + u8 gfx = m_charram[code << 4 | y]; + + // underline + if (BIT(attr, 0) && y == 15) + gfx = 0xff; + + for (int x = 0; x < 8; x++) + bitmap.pix32(col*16 + y, row*8 + x) = BIT(gfx, x) ? rgb_t::white() : rgb_t::black(); + } + } + } + return 0; } +void falco5220_state::rambank_w(u8 data) +{ + if (data < 9) + m_rambank->set_bank(data); + else + logerror("rambank_w: %02x\n", data); +} + void falco5220_state::rombank_w(u8 data) { m_rombank->set_entry(data & 3); } +void falco5220_state::unk5a_w(u8 data) +{ + logerror("5a = %02x\n", data); + m_5a = data; +} + void falco5220_state::mem_map(address_map &map) { map(0x0000, 0x7fff).rom().region("roms", 0); map(0x8000, 0xbfff).bankr("rombank"); map(0xc000, 0xdfff).ram().share("nvram"); - map(0xe000, 0xffff).ram(); + map(0xe000, 0xffff).m(m_rambank, FUNC(address_map_bank_device::amap8)); +} + +void falco5220_state::bank_map(address_map &map) +{ + map(0x00000, 0x0ffff).ram().share("ram"); // 2x NEC D43256C-10L? (5220s only has 2x HY6264P-10) + map(0x10000, 0x11fff).ram().share("charram"); // CXK5864AP-10L / HY6264LP-12? } void falco5220_state::io_map(address_map &map) { map.global_mask(0xff); map(0x00, 0x00).w(FUNC(falco5220_state::rombank_w)); +// map(0x50, 0x50).r // keyboard data +// map(0x51, 0x51).r // keyboard status + map(0x52, 0x52).w(FUNC(falco5220_state::rambank_w)); +// map(0x54, 0x54).w // vram address (low)? +// map(0x55, 0x55).w // vram address (high)? + map(0x5a, 0x5a).w(FUNC(falco5220_state::unk5a_w)); // 5220s only? map(0x60, 0x63).rw("sio", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); map(0x70, 0x73).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); map(0x88, 0x8b).nopw(); // second SIO? @@ -101,11 +161,27 @@ void falco5220_state::machine_start() void falco5220_state::machine_reset() { m_rombank->set_entry(0); + m_rambank->set_bank(0); } static INPUT_PORTS_START(falco5220) INPUT_PORTS_END +static const gfx_layout char_layout = +{ + 8,16, + 512, + 1, + { 0 }, + { 7, 6, 5, 4, 3, 2, 1, 0 }, + { STEP16(0, 8) }, + 8*16 +}; + +static GFXDECODE_START(chars) + GFXDECODE_RAM("charram", 0, char_layout, 0, 1) +GFXDECODE_END + static const z80_daisy_config daisy_chain[] = { { "ctc" }, @@ -120,6 +196,12 @@ void falco5220_state::falco5220(machine_config &config) m_maincpu->set_addrmap(AS_IO, &falco5220_state::io_map); m_maincpu->set_daisy_config(daisy_chain); + ADDRESS_MAP_BANK(config, m_rambank); + m_rambank->set_map(&falco5220_state::bank_map); + m_rambank->set_data_width(8); + m_rambank->set_addr_width(17); + m_rambank->set_stride(0x2000); + NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // CXK5864AP-10L + battery z80ctc_device &ctc(Z80CTC(config, "ctc", 12.288_MHz_XTAL / 2)); // Z0843006PSC @@ -131,8 +213,13 @@ void falco5220_state::falco5220(machine_config &config) sio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); + screen.set_color(rgb_t::amber()); screen.set_raw(37.98_MHz_XTAL, 1500, 0, 1320, 422, 0, 400); // 25.32 kHz/60 Hz confirmed screen.set_screen_update(FUNC(falco5220_state::screen_update)); + + PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT); + + GFXDECODE(config, "gfxdecode", "palette", chars); } ROM_START(falco5220e) -- cgit v1.2.3