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// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
SacState 8008
2009-02-23 Skeleton driver.
http://www.digibarn.com/stories/bill-pentz-story/index.html
The year is listed as '1972/73'.
All input to be in lowercase.
The weird characters that show on screen are various escape sequences.
These are different depending on the terminal type chosen. The codes
need to be understood and emulated before this system makes sense.
Known Monitor commands: (from the disassembly)
! write buffer to AD000
* set RAM036 flag
+ increment AD000 by 1
+n increment AD000 by n
- decrement AD000 by 1
-n decrement AD000 by n
: clear RAM036 flag
= display AD000
=nnn set AD000 to nnn
@ fill buffer with 026
unknown commands: / & d e l r s t u z \ ^ | ~
Other input will either result in '!' message, or halt.
****************************************************************************/
#include "emu.h"
#include "cpu/i8008/i8008.h"
#include "machine/terminal.h"
class sacstate_state : public driver_device
{
public:
sacstate_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_terminal(*this, "terminal")
{ }
void sacstate(machine_config &config);
private:
virtual void machine_start() override;
virtual void machine_reset() override;
u8 port00_r();
u8 port01_r();
u8 port04_r();
void port08_w(u8 data);
void kbd_put(u8 data);
void sacstate_io(address_map &map);
void sacstate_mem(address_map &map);
u8 m_term_data = 0U;
u8 m_val = 0U;
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
};
u8 sacstate_state::port01_r()
{
u8 ret = m_val;
if (m_term_data)
ret |= 0x04; // data in
return ret;
}
u8 sacstate_state::port00_r()
{
u8 ret = m_term_data;
m_term_data = 0;
return ret;
}
u8 sacstate_state::port04_r()
{
logerror("unknown_r\n");
return 0;
}
void sacstate_state::port08_w(u8 data)
{
if (data == 0x40)
m_val = 0x40;
else
if (data == 0x04)
m_val = 0;
}
void sacstate_state::sacstate_mem(address_map &map)
{
map.unmap_value_high();
map(0x000, 0x7ff).rom();
map(0x800, 0xfff).ram();
}
void sacstate_state::sacstate_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0x1f);
map(0x00, 0x00).r(FUNC(sacstate_state::port00_r));
map(0x01, 0x01).r(FUNC(sacstate_state::port01_r));
map(0x04, 0x04).r(FUNC(sacstate_state::port04_r));
map(0x08, 0x08).w(FUNC(sacstate_state::port08_w));
map(0x16, 0x16).w(m_terminal, FUNC(generic_terminal_device::write));
map(0x17, 0x1f).nopw();
}
/* Input ports */
static INPUT_PORTS_START( sacstate )
PORT_START("CONFIG")
PORT_CONFNAME( 0x08, 0x08, "Terminal Type") // no idea of actual terminal types
PORT_CONFSETTING( 0x00, "A")
PORT_CONFSETTING( 0x08, "B")
INPUT_PORTS_END
void sacstate_state::kbd_put(u8 data)
{
m_term_data = data;
}
void sacstate_state::machine_reset()
{
m_term_data = 0;
m_val = ioport("CONFIG")->read();
}
void sacstate_state::machine_start()
{
save_item(NAME(m_term_data));
save_item(NAME(m_val));
}
void sacstate_state::sacstate(machine_config &config)
{
/* basic machine hardware */
I8008(config, m_maincpu, 800000);
m_maincpu->set_addrmap(AS_PROGRAM, &sacstate_state::sacstate_mem);
m_maincpu->set_addrmap(AS_IO, &sacstate_state::sacstate_io);
/* video hardware */
GENERIC_TERMINAL(config, m_terminal, 0);
m_terminal->set_keyboard_callback(FUNC(sacstate_state::kbd_put));
}
/* ROM definition */
ROM_START( sacstate )
ROM_REGION( 0x0800, "maincpu", 0 )
ROM_LOAD( "sacst1.bin", 0x0700, 0x0100, CRC(ba020160) SHA1(6337cdf65583808768664653c937e50040aec6d4))
ROM_LOAD( "sacst2.bin", 0x0600, 0x0100, CRC(26f3e505) SHA1(3526060dbd1bf885c2e686bc9a6082387630952a))
ROM_LOAD( "sacst3.bin", 0x0500, 0x0100, CRC(965b3474) SHA1(6d9142e68d375fb000fd6ea48369d0801274ded6))
ROM_LOAD( "sacst4.bin", 0x0400, 0x0100, CRC(3cd3e169) SHA1(75a99e8e4dbd6e054209a4979bb498f37e962697))
ROM_LOAD( "sacst5.bin", 0x0300, 0x0100, CRC(30619454) SHA1(cb498880bec27c9adc44dc1267858555000452c6))
ROM_LOAD( "sacst6.bin", 0x0200, 0x0100, CRC(a4cd2ff6) SHA1(3f4da5510c0778eb770c96c01f91f5cb7f5285fa))
ROM_LOAD( "sacst7.bin", 0x0100, 0x0100, CRC(33971d8b) SHA1(9e0bbeef6a6a15107f270e8b285300284ee7f63f))
ROM_LOAD( "sacst8.bin", 0x0000, 0x0100, CRC(931252ef) SHA1(e06ea6947f432f0a4ce944de74978d929920fb53))
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1973, sacstate, 0, 0, sacstate, sacstate, sacstate_state, empty_init, "SacState", "SacState 8008", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
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