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Diffstat (limited to 'src/mame/drivers/cdc721.cpp')
-rw-r--r--src/mame/drivers/cdc721.cpp44
1 files changed, 21 insertions, 23 deletions
diff --git a/src/mame/drivers/cdc721.cpp b/src/mame/drivers/cdc721.cpp
index 14de1b9c3a3..dc0c2c16462 100644
--- a/src/mame/drivers/cdc721.cpp
+++ b/src/mame/drivers/cdc721.cpp
@@ -27,9 +27,10 @@ public:
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_bank_16k(*this, {"block0", "block4", "block8", "blockc"})
- , m_p_chargen(*this, "chargen")
- , m_p_videoram(*this, "videoram")
- , m_p_nvram(*this, "nvram")
+ , m_rom_chargen(*this, "chargen")
+ , m_ram_chargen(*this, "chargen")
+ , m_videoram(*this, "videoram")
+ , m_nvram(*this, "nvram")
{ }
void cdc721(machine_config &config);
@@ -56,9 +57,10 @@ private:
required_device<cpu_device> m_maincpu;
required_device_array<address_map_bank_device, 4> m_bank_16k;
- required_region_ptr<u8> m_p_chargen;
- required_shared_ptr<u8> m_p_videoram;
- required_shared_ptr<u8> m_p_nvram;
+ required_region_ptr<u8> m_rom_chargen;
+ required_shared_ptr<u8> m_ram_chargen;
+ required_shared_ptr<u8> m_videoram;
+ required_shared_ptr<u8> m_nvram;
};
WRITE8_MEMBER(cdc721_state::interrupt_mask_w)
@@ -88,7 +90,7 @@ WRITE8_MEMBER(cdc721_state::bank_select_w)
WRITE8_MEMBER(cdc721_state::nvram_w)
{
- m_p_nvram[offset] = data & 0x0f;
+ m_nvram[offset] = data & 0x0f;
}
void cdc721_state::mem_map(address_map &map)
@@ -108,13 +110,14 @@ void cdc721_state::block0_map(address_map &map)
void cdc721_state::block4_map(address_map &map)
{
map(0x0000, 0x00ff).ram().share("nvram").w(this, FUNC(cdc721_state::nvram_w));
- map(0x0800, 0x0bff).ram();
- map(0x8000, 0xbfff).rom().region("rompack", 0);
+ map(0x0800, 0x0bff).ram().share("chargen"); // 2x P2114AL-2
+ map(0x8000, 0xbfff).rom().region("16krom", 0);
map(0xc000, 0xffff).ram();
}
void cdc721_state::block8_map(address_map &map)
{
+ map(0x0000, 0x3fff).rom().region("rompack", 0);
map(0x4000, 0x7fff).ram();
}
@@ -149,11 +152,6 @@ void cdc721_state::machine_reset()
void cdc721_state::machine_start()
{
-// uint8_t *main = memregion("maincpu")->base();
-
-// membank("bankr0")->configure_entry(1, &main[0x14000]);
-// membank("bankr0")->configure_entry(0, &main[0x4000]);
-// membank("bankw0")->configure_entry(0, &main[0x4000]);
}
/* F4 Character Displayer */
@@ -190,7 +188,7 @@ uint32_t cdc721_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap
for (y = 0; y < 30; y++)
{
- uint16_t ma = m_p_videoram[y * 2] | m_p_videoram[y * 2 + 1] << 8;
+ uint16_t ma = m_videoram[y * 2] | m_videoram[y * 2 + 1] << 8;
for (ra = 0; ra < 16; ra++)
{
@@ -199,9 +197,9 @@ uint32_t cdc721_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap
for (x = 0; x < 160; x+=2)
{
pen = 1;
- chr = m_p_videoram[(x + ma) & 0x1fff];
- attr = m_p_videoram[(x + ma + 1) & 0x1fff];
- gfx = m_p_chargen[chr | (ra << 8) ];
+ chr = m_videoram[(x + ma) & 0x1fff];
+ attr = m_videoram[(x + ma + 1) & 0x1fff];
+ gfx = m_rom_chargen[chr | (ra << 8) ];
if (BIT(attr, 0)) // blank
pen = 0;
if (BIT(attr, 1) && (ra == 14)) // underline
@@ -239,7 +237,7 @@ MACHINE_CONFIG_START(cdc721_state::cdc721)
MCFG_CPU_ADD("maincpu", Z80, 6_MHz_XTAL) // Zilog Z8400B (Z80B)
MCFG_CPU_PROGRAM_MAP(mem_map)
MCFG_CPU_IO_MAP(io_map)
- MCFG_Z80_DAISY_CHAIN(cdc721_daisy_chain)
+ MCFG_Z80_DAISY_CHAIN(cdc721_daisy_chain) // FIXME: vector is independently generated
MCFG_DEVICE_ADD("block0", ADDRESS_MAP_BANK, 0)
MCFG_DEVICE_ADDRESS_MAP(0, block0_map)
@@ -300,15 +298,15 @@ ROM_START( cdc721 )
ROM_LOAD( "66315359", 0x0000, 0x2000, CRC(20ff3eb4) SHA1(5f15cb14893d75a46dc66d3042356bb054d632c2) )
ROM_LOAD( "66315361", 0x2000, 0x2000, CRC(21d59d09) SHA1(9c087537d68c600ddf1eb9b009cf458231c279f4) )
- ROM_REGION( 0x4000, "rompack", 0 )
+ ROM_REGION( 0x4000, "16krom", 0 )
ROM_LOAD( "66315360", 0x0000, 0x1000, CRC(feaa0fc5) SHA1(f06196553a1f10c07b2f7e495823daf7ea26edee) )
//ROM_FILL(0x0157,1,0xe0)
- ROM_REGION( 0x1000, "keyboard", 0 )
- ROM_LOAD( "66307828", 0x0000, 0x1000, CRC(ac97136f) SHA1(0d280e1aa4b9502bd390d260f83af19bf24905cd) ) // keyboard lookup
+ ROM_REGION( 0x4000, "rompack", ROMREGION_ERASE00 )
- ROM_REGION( 0x1000, "chargen", 0 )
+ ROM_REGION( 0x2000, "chargen", 0 )
ROM_LOAD( "66315039", 0x0000, 0x1000, CRC(5c9aa968) SHA1(3ec7c5f25562579e6ed3fda7562428ff5e6b9550) )
+ ROM_LOAD( "66307828", 0x1000, 0x1000, CRC(ac97136f) SHA1(0d280e1aa4b9502bd390d260f83af19bf24905cd) ) // foreign character ROM
ROM_END
COMP( 1981, cdc721, 0, 0, cdc721, cdc721, cdc721_state, 0, "Control Data Corporation", "721 Display Terminal", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )