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author Robbbert <robbbert@users.noreply.github.com>2013-09-10 09:08:11 +0000
committer Robbbert <robbbert@users.noreply.github.com>2013-09-10 09:08:11 +0000
commiteaf58835d59b734ec9ffc32c023bccda72d7122a (patch)
treea37d688c882f38dbf402c130e961e097483875da
parent9112614335f1e1b2b684b4569703499c11e02c78 (diff)
(MESS) ccs : Last part (nw)
-rw-r--r--src/mess/drivers/ccs300.c93
1 files changed, 62 insertions, 31 deletions
diff --git a/src/mess/drivers/ccs300.c b/src/mess/drivers/ccs300.c
index 4e50c7e6036..1c5c17441b0 100644
--- a/src/mess/drivers/ccs300.c
+++ b/src/mess/drivers/ccs300.c
@@ -6,6 +6,15 @@
It requires a floppy disk to boot from.
+There's no info available on this system, however the bankswitching
+appears to be the same as their other systems.
+
+Early on, it does a read from port F2. If bit 3 is low, the system becomes
+a Model 400.
+
+Since IM2 is used, it is assumed there are Z80 peripherals on board.
+There's unknown usage of ports 11 thru 1B, 34, and F0 thru F2.
+
****************************************************************************/
#include "emu.h"
@@ -18,45 +27,27 @@ class ccs300_state : public driver_device
public:
ccs300_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
- , m_ccs_ram(*this, "ccs_ram")
, m_maincpu(*this, "maincpu")
, m_terminal(*this, TERMINAL_TAG)
{ }
+ DECLARE_DRIVER_INIT(ccs300);
+ DECLARE_MACHINE_RESET(ccs300);
DECLARE_READ8_MEMBER(port10_r);
DECLARE_READ8_MEMBER(port11_r);
DECLARE_WRITE8_MEMBER(port10_w);
+ DECLARE_WRITE8_MEMBER(port40_w);
DECLARE_WRITE8_MEMBER(kbd_put);
- required_shared_ptr<UINT8> m_ccs_ram;
private:
UINT8 m_term_data;
- virtual void machine_reset();
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
};
-
-READ8_MEMBER( ccs300_state::port10_r )
-{
- UINT8 ret = m_term_data;
- m_term_data = 0;
- return ret;
-}
-
-READ8_MEMBER( ccs300_state::port11_r )
-{
- return (m_term_data) ? 5 : 4;
-}
-
-WRITE8_MEMBER( ccs300_state::port10_w )
-{
- m_terminal->write(space, 0, data & 0x7f);
-}
-
static ADDRESS_MAP_START(ccs300_mem, AS_PROGRAM, 8, ccs300_state)
ADDRESS_MAP_UNMAP_HIGH
- AM_RANGE(0x0000, 0xefff) AM_RAM AM_SHARE("ccs_ram")
- AM_RANGE(0xf000, 0xf7ff) AM_ROM AM_REGION("user1", 0xf000)
+ AM_RANGE(0x0000, 0x07ff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
+ AM_RANGE(0x0800, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START( ccs300_io, AS_IO, 8, ccs300_state)
@@ -64,19 +55,33 @@ static ADDRESS_MAP_START( ccs300_io, AS_IO, 8, ccs300_state)
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x10, 0x10) AM_READWRITE(port10_r,port10_w)
AM_RANGE(0x11, 0x11) AM_READ(port11_r)
+ AM_RANGE(0x40, 0x40) AM_WRITE(port40_w)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( ccs300 )
INPUT_PORTS_END
+//*************************************
+//
+// Keyboard
+//
+//*************************************
+READ8_MEMBER( ccs300_state::port10_r )
+{
+ UINT8 ret = m_term_data;
+ m_term_data = 0;
+ return ret;
+}
-void ccs300_state::machine_reset()
+READ8_MEMBER( ccs300_state::port11_r )
{
- UINT8* user1 = memregion("user1")->base();
- memcpy((UINT8*)m_ccs_ram, user1, 0x0800);
+ return (m_term_data) ? 5 : 4;
+}
- // this should be rom/ram banking
+WRITE8_MEMBER( ccs300_state::port10_w )
+{
+ m_terminal->write(space, 0, data & 0x7f);
}
WRITE8_MEMBER( ccs300_state::kbd_put )
@@ -89,11 +94,37 @@ static GENERIC_TERMINAL_INTERFACE( terminal_intf )
DEVCB_DRIVER_MEMBER(ccs300_state, kbd_put)
};
+//*************************************
+//
+// Machine
+//
+//*************************************
+WRITE8_MEMBER( ccs300_state::port40_w )
+{
+ membank("bankr0")->set_entry( (data) ? 1 : 0);
+}
+
+MACHINE_RESET_MEMBER( ccs300_state, ccs300 )
+{
+ membank("bankr0")->set_entry(0); // point at rom
+ membank("bankw0")->set_entry(0); // always write to ram
+}
+
+DRIVER_INIT_MEMBER( ccs300_state, ccs300 )
+{
+ UINT8 *main = memregion("maincpu")->base();
+
+ membank("bankr0")->configure_entry(1, &main[0x0000]);
+ membank("bankr0")->configure_entry(0, &main[0x10000]);
+ membank("bankw0")->configure_entry(0, &main[0x0000]);
+}
+
static MACHINE_CONFIG_START( ccs300, ccs300_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
MCFG_CPU_PROGRAM_MAP(ccs300_mem)
MCFG_CPU_IO_MAP(ccs300_io)
+ MCFG_MACHINE_RESET_OVERRIDE(ccs300_state, ccs300)
/* video hardware */
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
@@ -101,11 +132,11 @@ MACHINE_CONFIG_END
/* ROM definition */
ROM_START( ccs300 )
- ROM_REGION( 0x10000, "user1", ROMREGION_ERASEFF )
- ROM_LOAD( "ccs300.rom", 0x0000, 0x0800, CRC(6cf22e31) SHA1(9aa3327cd8c23d0eab82cb6519891aff13ebe1d0))
+ ROM_REGION( 0x10800, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "ccs300.rom", 0x10000, 0x0800, CRC(6cf22e31) SHA1(9aa3327cd8c23d0eab82cb6519891aff13ebe1d0))
ROM_END
/* Driver */
-/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
-COMP( 19??, ccs300, ccs2810, 0, ccs300, ccs300, driver_device, 0, "California Computer Systems", "CCS Model 300", GAME_IS_SKELETON )
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP( 19??, ccs300, ccs2810, 0, ccs300, ccs300, ccs300_state, ccs300, "California Computer Systems", "CCS Model 300", GAME_IS_SKELETON )