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(MESS) fc100 : connected unknown ports to bankswitching

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This commit is contained in:
Robbbert 2014-04-30 10:58:03 +00:00
parent bd369b2212
commit d2740189a8
1 changed files with 34 additions and 5 deletions
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39
src/mess/drivers/fc100.c
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@ -64,8 +64,11 @@ public:
DECLARE_WRITE8_MEMBER(port31_w);
DECLARE_WRITE8_MEMBER(port33_w);
DECLARE_WRITE8_MEMBER(port43_w);
DECLARE_WRITE8_MEMBER(port60_w);
DECLARE_WRITE8_MEMBER(port70_w);
DECLARE_WRITE_LINE_MEMBER(txdata_callback);
DECLARE_WRITE_LINE_MEMBER(uart_clock_w);
DECLARE_DRIVER_INIT(fc100);
TIMER_DEVICE_CALLBACK_MEMBER(timer_c);
TIMER_DEVICE_CALLBACK_MEMBER(timer_p);
TIMER_DEVICE_CALLBACK_MEMBER(timer_k);
@ -93,6 +96,7 @@ private:
bool m_cass_state;
bool m_cassold;
UINT8 m_key_pressed;
bool m_banksw_unlocked;
required_device<cpu_device> m_maincpu;
required_device<mc6847_base_device> m_vdg;
@ -107,7 +111,8 @@ private:
static ADDRESS_MAP_START( fc100_mem, AS_PROGRAM, 8, fc100_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x0000, 0x5fff ) AM_ROM AM_REGION("roms", 0)
AM_RANGE( 0x6000, 0x7fff ) AM_ROM AM_REGION("cart", 0)
AM_RANGE( 0x6000, 0x77ff ) AM_ROM AM_REGION("cart", 0)
AM_RANGE( 0x7800, 0x7fff ) AM_READ_BANK("bankr") AM_WRITE_BANK("bankw") // Banked RAM/ROM
AM_RANGE( 0x8000, 0xBFFF ) AM_RAM // expansion ram pack - if omitted you get a 'Pages?' prompt at boot
AM_RANGE( 0xc000, 0xffff ) AM_RAM AM_SHARE("videoram")
ADDRESS_MAP_END
@ -126,9 +131,8 @@ static ADDRESS_MAP_START( fc100_io, AS_IO, 8, fc100_state )
AM_RANGE(0x42, 0x42) AM_WRITENOP // bit 0 could be printer select
AM_RANGE(0x43, 0x43) AM_WRITE(port43_w)
AM_RANGE(0x44, 0x44) AM_DEVREAD("cent_status_in", input_buffer_device, read)
// AM_RANGE(0x60, 0x61) banking, details unknown
AM_RANGE(0x70, 0x70) AM_WRITENOP // banking, details unknown
// AM_RANGE(0x71, 0x71) banking, details unknown
AM_RANGE(0x60, 0x61) AM_WRITE(port60_w)
AM_RANGE(0x70, 0x71) AM_WRITE(port70_w)
AM_RANGE(0xb0, 0xb0) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
AM_RANGE(0xb8, 0xb8) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
ADDRESS_MAP_END
@ -511,6 +515,29 @@ void fc100_state::machine_reset()
m_cass_state = 0;
m_cassold = 0;
m_key_pressed = 0;
membank("bankr")->set_entry(0);
membank("bankw")->set_entry(0);
}
WRITE8_MEMBER( fc100_state::port60_w )
{
if (m_banksw_unlocked)
membank("bankr")->set_entry(offset);
}
WRITE8_MEMBER( fc100_state::port70_w )
{
m_banksw_unlocked = (bool)offset;
}
DRIVER_INIT_MEMBER( fc100_state, fc100 )
{
UINT8 *ram = memregion("ram")->base();
UINT8 *cgen = memregion("chargen")->base()+0x800;
membank("bankr")->configure_entry(0, &cgen[0]);
membank("bankw")->configure_entry(0, &ram[0]);
membank("bankr")->configure_entry(1, &ram[0]);
}
static MACHINE_CONFIG_START( fc100, fc100_state )
@ -557,6 +584,8 @@ ROM_START( fc100 )
ROM_LOAD( "08-02.u49", 0x2000, 0x2000, CRC(e14fc7e9) SHA1(9c5821e65c1efe698e25668d24c36929ea4c3ad7) )
ROM_LOAD( "06-03.u50", 0x4000, 0x2000, CRC(d783c84e) SHA1(6d1bf53995e08724d5ecc24198cdda4442eb2eb9) )
ROM_REGION( 0x800, "ram", ROMREGION_ERASE00 )
ROM_REGION( 0x1000, "chargen", 0 )
ROM_LOAD( "cg-04-01.u53", 0x0000, 0x1000, CRC(2de75b7f) SHA1(464369d98cbae92ffa322ebaa4404cf5b26825f1) )
@ -567,4 +596,4 @@ ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
CONS( 1982, fc100, 0, 0, fc100, fc100, driver_device, 0, "Goldstar", "FC-100", GAME_NOT_WORKING )
CONS( 1982, fc100, 0, 0, fc100, fc100, fc100_state, fc100, "Goldstar", "FC-100", GAME_NOT_WORKING )