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Diffstat (limited to 'src/mame/drivers/falco5220.cpp')
-rw-r--r--src/mame/drivers/falco5220.cpp95
1 files 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<z80_device> m_maincpu;
+ required_device<address_map_bank_device> m_rambank;
required_device<screen_device> m_screen;
-
required_memory_bank m_rombank;
- //required_shared_ptr<u8> m_cram; // 1x or 2x NEC D43256C-10L
- //required_shared_ptr<u8> m_aram; // 1x or 2x NEC D43256C-10L
+ required_shared_ptr<u8> m_ram;
+ required_shared_ptr<u8> 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)