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rt1715w: use CAS decode PROM (nw)

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This commit is contained in:
Sergey Svishchev 2020-05-23 12:42:11 +03:00
parent d9138cb8e0
commit b2052931ec
1 changed files with 154 additions and 69 deletions
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223
src/mame/drivers/rt1715.cpp
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@ -25,7 +25,6 @@
#include "emu.h"
#include "cpu/z80/z80.h"
#include "imagedev/floppy.h"
#include "machine/bankdev.h"
#include "machine/ram.h"
#include "machine/upd765.h"
#include "machine/z80ctc.h"
@ -33,10 +32,23 @@
#include "machine/z80dma.h"
#include "machine/z80pio.h"
#include "video/i8275.h"
#include "bus/rs232/rs232.h"
#include "machine/keyboard.h"
#include "emupal.h"
#include "screen.h"
#define LOG_BANK (1U << 1)
#define VERBOSE (LOG_GENERAL)
//#define LOG_OUTPUT_FUNC printf
#include "logmacro.h"
#define LOGBANK(format, ...) LOGMASKED(LOG_BANK, "%11.6f at %s: " format, machine().time().as_double(), machine().describe_context(), __VA_ARGS__)
class rt1715_state : public driver_device
{
public:
@ -44,9 +56,9 @@ public:
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_ram(*this, RAM_TAG)
, m_bankdev(*this, "bankdev%u", 0U)
, m_sio0(*this, "sio0")
, m_ctc0(*this, "ctc0")
, m_rs232(*this, "rs232")
, m_fdc(*this, "i8272")
, m_floppy(*this, "i8272:%u", 0U)
, m_dma(*this, "z80dma")
@ -55,7 +67,8 @@ public:
, m_palette(*this, "palette")
, m_crtc(*this, "i8275")
, m_p_chargen(*this, "gfx")
, m_p_videoram(*this, "videoram")
, m_videoram(*this, "videoram")
, m_p_cas(*this, "prom")
{
}
@ -89,8 +102,6 @@ private:
void rt1715w_io(address_map &map);
void rt1715_mem(address_map &map);
void rt1715w_mem(address_map &map);
void rt1715w_m1(address_map &map);
void rt1715w_banked_mem(address_map &map);
DECLARE_MACHINE_START(rt1715);
DECLARE_MACHINE_RESET(rt1715);
@ -99,9 +110,9 @@ private:
required_device<z80_device> m_maincpu;
required_device<ram_device> m_ram;
optional_device_array<address_map_bank_device, 3> m_bankdev;
required_device<z80sio_device> m_sio0;
required_device<z80ctc_device> m_ctc0;
required_device<rs232_port_device> m_rs232;
optional_device<i8272a_device> m_fdc;
optional_device_array<floppy_connector, 2> m_floppy;
optional_device<z80dma_device> m_dma;
@ -110,7 +121,8 @@ private:
required_device<palette_device> m_palette;
required_device<i8275_device> m_crtc;
required_region_ptr<uint8_t> m_p_chargen;
optional_shared_ptr<uint8_t> m_p_videoram;
optional_device<ram_device> m_videoram;
optional_region_ptr<uint8_t> m_p_cas;
int m_led1_val;
int m_led2_val;
@ -126,12 +138,12 @@ private:
WRITE8_MEMBER(rt1715_state::rt1715_floppy_enable)
{
logerror("%s: rt1715_floppy_enable %02x\n", machine().describe_context(), data);
LOG("%s: rt1715_floppy_enable %02x\n", machine().describe_context(), data);
}
WRITE8_MEMBER(rt1715_state::rt1715w_floppy_motor)
{
logerror("%s: rt1715w_floppy_motor %02x\n", machine().describe_context(), data);
LOG("%s: rt1715w_floppy_motor %02x\n", machine().describe_context(), data);
if (m_floppy[0]->get_device()) m_floppy[0]->get_device()->mon_w(data & 0x80 ? 1 : 0);
if (m_floppy[1]->get_device()) m_floppy[1]->get_device()->mon_w(data & 0x08 ? 1 : 0);
@ -139,7 +151,7 @@ WRITE8_MEMBER(rt1715_state::rt1715w_floppy_motor)
WRITE8_MEMBER(rt1715_state::rt1715w_krfd_w)
{
logerror("%s: rt1715w_krfd_w %02x\n", machine().describe_context(), data);
LOG("%s: rt1715w_krfd_w %02x\n", machine().describe_context(), data);
m_krfd = data;
}
@ -156,7 +168,7 @@ WRITE_LINE_MEMBER(rt1715_state::tc_w)
READ8_MEMBER(rt1715_state::k7658_led1_r)
{
m_led1_val ^= 1;
logerror("%s: k7658_led1_r %02x\n", machine().describe_context(), m_led1_val);
LOG("%s: k7658_led1_r %02x\n", machine().describe_context(), m_led1_val);
return 0xff;
}
@ -164,7 +176,7 @@ READ8_MEMBER(rt1715_state::k7658_led1_r)
READ8_MEMBER(rt1715_state::k7658_led2_r)
{
m_led2_val ^= 1;
logerror("%s: k7658_led2_r %02x\n", machine().describe_context(), m_led2_val);
LOG("%s: k7658_led2_r %02x\n", machine().describe_context(), m_led2_val);
return 0xff;
}
@ -193,7 +205,7 @@ READ8_MEMBER(rt1715_state::k7658_data_r)
/* serial output on D0 */
WRITE8_MEMBER(rt1715_state::k7658_data_w)
{
logerror("%s: k7658_data_w %02x\n", machine().describe_context(), BIT(data, 0));
LOG("%s: k7658_data_w %02x\n", machine().describe_context(), BIT(data, 0));
}
@ -215,7 +227,7 @@ MACHINE_RESET_MEMBER(rt1715_state, rt1715)
WRITE8_MEMBER(rt1715_state::rt1715_rom_disable)
{
logerror("%s: rt1715_set_bank %02x\n", machine().describe_context(), data);
LOGBANK("%s: rt1715_set_bank %02x\n", machine().describe_context(), data);
/* disable ROM, enable RAM */
membank("bank1")->set_base(m_ram->pointer());
@ -223,8 +235,6 @@ WRITE8_MEMBER(rt1715_state::rt1715_rom_disable)
MACHINE_START_MEMBER(rt1715_state, rt1715w)
{
membank("bank2")->set_base(m_ram->pointer() + 0x4000);
membank("bank3")->set_base(m_ram->pointer());
}
MACHINE_RESET_MEMBER(rt1715_state, rt1715w)
@ -234,13 +244,11 @@ MACHINE_RESET_MEMBER(rt1715_state, rt1715w)
m_dma_adr = 0;
m_r = 0;
m_w = 0;
m_bankdev[0]->set_bank(m_r);
m_bankdev[1]->set_bank(m_w);
m_bankdev[2]->set_bank(m_r);
}
/*
BR (A62, A63)
b2..0 = AB18..16
0 - Hintergrundbank (Bildschirm, Zeichengeneratoren)
@ -252,14 +260,10 @@ MACHINE_RESET_MEMBER(rt1715_state, rt1715w)
*/
WRITE8_MEMBER(rt1715_state::rt1715w_set_bank)
{
int r = data >> 4;
int w = data & 15;
int w = (data >> 4) & 7;
int r = data & 7;
logerror("%s: rt1715w_set_bank target %x source %x%s\n", machine().describe_context(), w, r, r == w ? "" : " DIFF");
m_bankdev[0]->set_bank(r);
m_bankdev[1]->set_bank(w);
if (r < 2) m_bankdev[2]->set_bank(r);
LOGBANK("%s: rt1715w_set_bank target %x source %x%s\n", machine().describe_context(), w, r, r == w ? "" : " DIFF");
m_r = r;
m_w = w;
@ -272,15 +276,55 @@ uint8_t rt1715_state::memory_read_byte(offs_t offset)
switch (m_r)
{
case 0:
data = m_maincpu->space(AS_PROGRAM).read_byte(offset);
switch (offset >> 12)
{
case 0:
data = memregion("ipl")->base()[offset & 0x7ff];
break;
case 1:
break;
case 2:
data = m_p_chargen[offset & 0xfff];
break;
case 3:
data = m_videoram->pointer()[offset & 0xfff];
break;
default:
data = m_ram->pointer()[offset];
break;
}
LOGBANK("mem r %04x bank %d == %02x\n", offset, m_r, data);
break;
case 1:
data = m_ram->pointer()[offset];
break;
default:
uint8_t cas_addr = 128 + (m_r << 4) + ((offset >> 12) & 15);
uint8_t cas_data = m_p_cas[cas_addr] ^ 15;
switch (cas_data)
{
case 1:
data = m_ram->pointer()[offset];
break;
case 2: case 3: case 4: case 5:
data = m_ram->pointer()[offset + (m_r - 2) * 0x10000];
case 2:
data = m_ram->pointer()[offset + 0x10000];
break;
case 4:
data = m_ram->pointer()[offset + 0x20000];
break;
case 8:
data = m_ram->pointer()[offset + 0x30000];
break;
default:
break;
}
LOGBANK("mem r %04x bank %d cas %d(%02x) == %02x\n", offset, m_r, cas_data, cas_addr, data);
break;
}
return data;
@ -291,15 +335,52 @@ void rt1715_state::memory_write_byte(offs_t offset, uint8_t data)
switch (m_w)
{
case 0:
m_maincpu->space(AS_PROGRAM).write_byte(offset, data);
switch (offset >> 12)
{
case 0:
case 1:
break;
case 2:
m_p_chargen[offset & 0xfff] = data;
break;
case 3:
m_videoram->pointer()[offset & 0xfff] = data;
break;
default:
m_ram->pointer()[offset] = data;
break;
}
LOGBANK("mem w %04x bank %d <- %02x\n", offset, m_w, data);
break;
case 1:
m_ram->pointer()[offset] = data;
break;
default:
uint8_t cas_addr = 128 + (m_w << 4) + ((offset >> 12) & 15);
uint8_t cas_data = m_p_cas[cas_addr] ^ 15;
switch (cas_data)
{
case 1:
m_ram->pointer()[offset] = data;
break;
case 2: case 3: case 4: case 5:
m_ram->pointer()[offset + (m_w - 2) * 0x10000] = data;
case 2:
m_ram->pointer()[offset + 0x10000] = data;
break;
case 4:
m_ram->pointer()[offset + 0x20000] = data;
break;
case 8:
m_ram->pointer()[offset + 0x30000] = data;
break;
default:
break;
}
LOGBANK("mem w %04x bank %d cas %d(%02x) <- %02x\n", offset, m_w, cas_data, cas_addr, data);
break;
}
}
@ -331,7 +412,7 @@ WRITE_LINE_MEMBER(rt1715_state::crtc_drq_w)
{
if (state)
{
m_crtc->dack_w(m_p_videoram[m_dma_adr++]);
m_crtc->dack_w(m_videoram->pointer()[m_dma_adr++]);
m_dma_adr %= (80 * 24);
}
}
@ -342,7 +423,7 @@ I8275_DRAW_CHARACTER_MEMBER(rt1715_state::crtc_display_pixels)
u8 gfx = (lten) ? 0xff : 0;
if (!vsp)
gfx = m_p_chargen[linecount << 7 | charcode];
gfx = m_p_chargen[((gpa & 1) << 11) | (linecount << 7) | charcode];
if (rvv)
gfx ^= 0xff;
@ -398,9 +479,10 @@ void rt1715_state::rt1715_base_io(address_map &map)
map.unmap_value_high();
map.global_mask(0xff);
map(0x08, 0x0b).rw(m_ctc0, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0x0c, 0x0f).rw(m_sio0, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
map(0x0c, 0x0f).rw(m_sio0, FUNC(z80sio_device::cd_ba_r), FUNC(z80sio_device::cd_ba_w));
map(0x10, 0x17).noprw();
// map(0x10, 0x13).rw(m_ctc1, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
// map(0x14, 0x17).rw(m_sio1, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
// map(0x14, 0x17).rw(m_sio1, FUNC(z80sio_device::cd_ba_r), FUNC(z80sio_device::cd_ba_w));
map(0x18, 0x19).rw(m_crtc, FUNC(i8275_device::read), FUNC(i8275_device::write));
// map(0x2c, 0x2f) // LT107CS -- serial DSR?
// map(0x30, 0x33) // LT111CS -- serial SEL? (data rate selector)
@ -420,24 +502,7 @@ void rt1715_state::rt1715_io(address_map &map)
void rt1715_state::rt1715w_mem(address_map &map)
{
map(0x0000, 0xffff).r(m_bankdev[0], FUNC(address_map_bank_device::read8)).w(m_bankdev[1], FUNC(address_map_bank_device::write8));
}
void rt1715_state::rt1715w_m1(address_map &map)
{
map(0x0000, 0xffff).r(m_bankdev[2], FUNC(address_map_bank_device::read8)).w(m_bankdev[2], FUNC(address_map_bank_device::write8));
}
void rt1715_state::rt1715w_banked_mem(address_map &map)
{
// map 0
map(0x00000, 0x007ff).rom().region("ipl", 0);
map(0x02000, 0x02fff).ram().region("gfx", 0);
map(0x03000, 0x03fff).ram().share("videoram");
map(0x04000, 0x0ffff).bankrw("bank2");
// maps 1-5
map(0x10000, 0x1ffff).bankrw("bank3");
map(0x20000, 0x5ffff).bankrw("bank3");
map(0x0000, 0xffff).rw(FUNC(rt1715_state::memory_read_byte), FUNC(rt1715_state::memory_write_byte));
}
// rt1715w -- decoders A13, A14, page C
@ -547,6 +612,16 @@ static INPUT_PORTS_START( k7658 )
PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END
static DEVICE_INPUT_DEFAULTS_START( kbd_rs232_defaults )
DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 )
DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE )
DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
DEVICE_INPUT_DEFAULTS( "FLOW_CONTROL", 0x01, 0x00 )
DEVICE_INPUT_DEFAULTS_END
/***************************************************************************
MACHINE DRIVERS
@ -564,7 +639,6 @@ static const z80_daisy_config rt1715_daisy_chain[] =
static const z80_daisy_config rt1715w_daisy_chain[] =
{
{ "ctc0" },
{ "sio0" },
{ nullptr }
};
@ -607,11 +681,25 @@ void rt1715_state::rt1715(machine_config &config)
/* keyboard */
Z80SIO(config, m_sio0, 9.832_MHz_XTAL / 4);
m_sio0->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_sio0->out_txda_callback().set(m_rs232, FUNC(rs232_port_device::write_txd));
m_sio0->out_dtra_callback().set(m_rs232, FUNC(rs232_port_device::write_dtr));
m_sio0->out_rtsa_callback().set(m_rs232, FUNC(rs232_port_device::write_rts));
Z80CTC(config, m_ctc0, 9.832_MHz_XTAL / 4);
m_ctc0->zc_callback<0>().set(m_sio0, FUNC(z80sio_device::txca_w));
Z80CTC(config, m_ctc0, 15.9744_MHz_XTAL / 4);
m_ctc0->zc_callback<0>().set(m_sio0, FUNC(z80sio_device::rxca_w));
m_ctc0->zc_callback<2>().set(m_sio0, FUNC(z80sio_device::rxtxcb_w));
// X3 connector on motherboard
RS232_PORT(config, m_rs232, default_rs232_devices, "keyboard");
m_rs232->rxd_handler().set(m_sio0, FUNC(z80sio_device::rxa_w));
m_rs232->cts_handler().set(m_sio0, FUNC(z80sio_device::ctsa_w));
m_rs232->dsr_handler().set(m_sio0, FUNC(z80sio_device::synca_w));
m_rs232->set_option_device_input_defaults("keyboard", DEVICE_INPUT_DEFAULTS_NAME(kbd_rs232_defaults));
// X4 connector -- printer
// X5 connector -- V24 port
/* floppy */
Z80PIO(config, "a71", 9.832_MHz_XTAL / 4);
Z80PIO(config, "a72", 9.832_MHz_XTAL / 4);
@ -625,14 +713,10 @@ void rt1715_state::rt1715w(machine_config &config)
rt1715(config);
m_maincpu->set_clock(15.9744_MHz_XTAL / 4);
m_maincpu->set_addrmap(AS_PROGRAM, &rt1715_state::rt1715w_m1);
m_maincpu->set_addrmap(AS_PROGRAM, &rt1715_state::rt1715w_mem);
m_maincpu->set_addrmap(AS_IO, &rt1715_state::rt1715w_io);
m_maincpu->set_daisy_config(rt1715w_daisy_chain);
ADDRESS_MAP_BANK(config, "bankdev0").set_map(&rt1715_state::rt1715w_banked_mem).set_options(ENDIANNESS_BIG, 8, 19, 0x10000);
ADDRESS_MAP_BANK(config, "bankdev1").set_map(&rt1715_state::rt1715w_banked_mem).set_options(ENDIANNESS_BIG, 8, 19, 0x10000);
ADDRESS_MAP_BANK(config, "bankdev2").set_map(&rt1715_state::rt1715w_banked_mem).set_options(ENDIANNESS_BIG, 8, 19, 0x10000);
MCFG_MACHINE_START_OVERRIDE(rt1715_state, rt1715w)
MCFG_MACHINE_RESET_OVERRIDE(rt1715_state, rt1715w)
@ -658,6 +742,7 @@ void rt1715_state::rt1715w(machine_config &config)
Z80CTC(config, m_ctc2, 15.9744_MHz_XTAL / 4);
m_ram->set_default_size("256K");
RAM(config, m_videoram).set_default_size("4K").set_default_value(0x00);
}