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CHAOS2: Added notes.

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This commit is contained in:
Robbbert 2016-08-22 01:24:19 +10:00
parent c6ee1b1b21
commit 805c265435
1 changed files with 18 additions and 17 deletions
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35
src/mame/drivers/chaos.cpp
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@ -21,11 +21,12 @@
end, exec, execute, fill, find, goto, if, input, let, list, load, lowercase,
memdis, memset, open, port, read, reboot, runhex, run, save, type, typesl,
verify.
An example is: memdis 0 f
An example is: memdis 0 8 (memory dump starting at 0, show 8 lines)
Don't try 'fill' - it fills all memory with zeroes, crashing the system.
ToDo:
- Connect up floppy disk (no info available on this)
- Connect up floppy disk (WD1771 fdc, 5.25", single density,
no other info available)
****************************************************************************/
@ -33,16 +34,15 @@
#include "cpu/s2650/s2650.h"
#include "machine/terminal.h"
#define TERMINAL_TAG "terminal"
class chaos_state : public driver_device
{
public:
chaos_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_terminal(*this, TERMINAL_TAG),
m_p_ram(*this, "p_ram") ,
m_maincpu(*this, "maincpu")
: driver_device(mconfig, type, tag)
, m_terminal(*this, "terminal")
, m_p_ram(*this, "ram")
, m_maincpu(*this, "maincpu")
{
}
@ -51,6 +51,7 @@ public:
DECLARE_READ8_MEMBER(port90_r);
DECLARE_READ8_MEMBER(port91_r);
DECLARE_WRITE8_MEMBER(kbd_put);
private:
UINT8 m_term_data;
virtual void machine_reset() override;
required_device<generic_terminal_device> m_terminal;
@ -61,7 +62,7 @@ public:
static ADDRESS_MAP_START( chaos_mem, AS_PROGRAM, 8, chaos_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x7fff) AM_RAM AM_SHARE("p_ram")
AM_RANGE(0x0000, 0x7fff) AM_RAM AM_SHARE("ram")
ADDRESS_MAP_END
static ADDRESS_MAP_START( chaos_io, AS_IO, 8, chaos_state )
@ -70,7 +71,7 @@ static ADDRESS_MAP_START( chaos_io, AS_IO, 8, chaos_state )
AM_RANGE(0x1f, 0x1f) AM_READWRITE(port90_r, port1f_w)
AM_RANGE(0x90, 0x90) AM_READ(port90_r)
AM_RANGE(0x91, 0x91) AM_READ(port91_r)
AM_RANGE(0x92, 0x92) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
AM_RANGE(0x92, 0x92) AM_DEVWRITE("terminal", generic_terminal_device, write)
AM_RANGE(0x101, 0x103) AM_NOP // stops error log filling up while using debug
ADDRESS_MAP_END
@ -132,32 +133,32 @@ WRITE8_MEMBER( chaos_state::kbd_put )
void chaos_state::machine_reset()
{
// copy the roms into ram
UINT8* ROM = memregion("maincpu")->base();
UINT8* ROM = memregion("roms")->base();
memcpy(m_p_ram, ROM, 0x3000);
memcpy(m_p_ram+0x7000, ROM+0x7000, 0x1000);
memcpy(m_p_ram+0x7000, ROM+0x3000, 0x1000);
}
static MACHINE_CONFIG_START( chaos, chaos_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",S2650, XTAL_1MHz)
MCFG_CPU_ADD("maincpu", S2650, XTAL_1MHz)
MCFG_CPU_PROGRAM_MAP(chaos_mem)
MCFG_CPU_IO_MAP(chaos_io)
/* video hardware */
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
MCFG_DEVICE_ADD("terminal", GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(chaos_state, kbd_put))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( chaos )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_REGION( 0x4000, "roms", ROMREGION_ERASEFF )
ROM_LOAD( "chaos.001", 0x0000, 0x1000, CRC(3b433e72) SHA1(5b487337d71253d0e64e123f405da9eaf20e87ac))
ROM_LOAD( "chaos.002", 0x1000, 0x1000, CRC(8b0b487f) SHA1(0d167cf3004a81c87446f2f1464e3debfa7284fe))
ROM_LOAD( "chaos.003", 0x2000, 0x1000, CRC(5880db81) SHA1(29b8f1b03c83953f66464ad1fbbfe2e019637ce1))
ROM_LOAD( "chaos.004", 0x7000, 0x1000, CRC(5d6839d6) SHA1(237f52f0780ac2e29d57bf06d0f7a982eb523084))
ROM_LOAD( "chaos.004", 0x3000, 0x1000, CRC(5d6839d6) SHA1(237f52f0780ac2e29d57bf06d0f7a982eb523084))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1983, chaos, 0, 0, chaos, chaos, driver_device, 0, "<unknown>", "Chaos 2", MACHINE_NO_SOUND_HW )
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1983, chaos, 0, 0, chaos, chaos, driver_device, 0, "David Greaves", "Chaos 2", MACHINE_NO_SOUND_HW )