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(MESS) c900 : Added notes, extra rom.

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This commit is contained in:
Robbbert 2013-09-15 12:48:27 +00:00
parent 32f1b6aa47
commit a5d4726978
1 changed files with 61 additions and 30 deletions
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91
src/mess/drivers/c900.c
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@ -1,4 +1,4 @@
/*
/******************************************************************************************
Commodore C900
UNIX prototype
@ -6,7 +6,14 @@
http://www.zimmers.net/cbmpics/c900.html
http://www.zimmers.net/cbmpics/cbm/900/c900-chips.txt
*/
Chips: Z8001 CPU, Z8010 MMU, Z8030 SCC, Z8036 CIO. Crystal: 12MHz
The Z8030 runs 2 serial ports. The Z8036 runs the IEEE interface and the speaker.
The FDC is an intelligent device that communicates with the main board via the MMU.
It has a 6508 CPU.
*******************************************************************************************/
#include "emu.h"
@ -18,38 +25,45 @@ class c900_state : public driver_device
{
public:
c900_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_terminal(*this, TERMINAL_TAG)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_terminal(*this, TERMINAL_TAG)
{ }
// UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
DECLARE_READ16_MEMBER(port1e_r);
DECLARE_READ16_MEMBER(key_r);
DECLARE_READ16_MEMBER(stat_r);
DECLARE_WRITE8_MEMBER(kbd_put);
private:
UINT8 m_term_data;
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
};
static ADDRESS_MAP_START(c900_mem, AS_PROGRAM, 16, c900_state)
AM_RANGE(0x0000, 0x7fff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0x8000, 0xffff) AM_RAM
AM_RANGE(0x00000, 0x07fff) AM_ROM AM_REGION("roms", 0)
ADDRESS_MAP_END
static ADDRESS_MAP_START(c900_data, AS_DATA, 16, c900_state)
AM_RANGE(0x00000, 0x07fff) AM_ROM AM_REGION("roms", 0)
AM_RANGE(0x08000, 0x6ffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(c900_io, AS_IO, 16, c900_state)
AM_RANGE(0x100, 0x101) AM_READ(stat_r)
AM_RANGE(0x110, 0x111) AM_READ(key_r) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0x00ff)
AM_RANGE(0x0010, 0x0011) AM_READ(stat_r)
AM_RANGE(0x001A, 0x001B) AM_READ(key_r)
AM_RANGE(0x001E, 0x001F) AM_READ(port1e_r)
AM_RANGE(0x0100, 0x0101) AM_READ(stat_r)
AM_RANGE(0x0110, 0x0111) AM_READ(key_r) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0x00ff)
ADDRESS_MAP_END
static INPUT_PORTS_START( c900 )
INPUT_PORTS_END
//UINT32 c900_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
//{
// return 0;
//}
READ16_MEMBER( c900_state::port1e_r )
{
return 0;
}
READ16_MEMBER( c900_state::key_r )
{
@ -60,7 +74,7 @@ READ16_MEMBER( c900_state::key_r )
READ16_MEMBER( c900_state::stat_r )
{
return (m_term_data) ? 5 : 4;
return (m_term_data) ? 6 : 4;
}
WRITE8_MEMBER( c900_state::kbd_put )
@ -73,31 +87,48 @@ static GENERIC_TERMINAL_INTERFACE( terminal_intf )
DEVCB_DRIVER_MEMBER(c900_state, kbd_put)
};
/* F4 Character Displayer */
static const gfx_layout c900_charlayout =
{
8, 16, /* 8 x 16 characters */
256, /* 256 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 0, 1, 2, 3, 4, 5, 6, 7 },
/* y offsets */
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
8*16 /* every char takes 16 bytes */
};
static GFXDECODE_START( c900 )
GFXDECODE_ENTRY( "chargen", 0x0000, c900_charlayout, 0, 1 )
GFXDECODE_END
static MACHINE_CONFIG_START( c900, c900_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z8001, 4000000)
MCFG_CPU_ADD("maincpu", Z8001, XTAL_12MHz / 2)
MCFG_CPU_PROGRAM_MAP(c900_mem)
MCFG_CPU_DATA_MAP(c900_data)
MCFG_CPU_IO_MAP(c900_io)
/* video hardware */
// MCFG_SCREEN_ADD("screen", RASTER)
// MCFG_SCREEN_REFRESH_RATE(60)
// MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
// MCFG_SCREEN_SIZE(512, 256)
// MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1)
// MCFG_PALETTE_LENGTH(4)
// MCFG_SCREEN_UPDATE_DRIVER(c900_state, screen_update)
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
MCFG_GFXDECODE(c900)
MCFG_PALETTE_LENGTH(2)
MCFG_PALETTE_INIT_OVERRIDE(driver_device, black_and_white)
MACHINE_CONFIG_END
ROM_START( c900 )
ROM_REGION16_LE( 0x8000, "maincpu", 0 )
ROM_LOAD16_BYTE( "c 900 boot-h v 1.0.bin.u17", 0x0000, 0x4000, CRC(c3aa7fc1) SHA1(ff12dd100fa7b1e7e931e9a8ef4c4f5cc056e099) )
ROM_LOAD16_BYTE( "c 900 boot-l v 1.0.bin.u18", 0x0001, 0x4000, CRC(0aa39272) SHA1(b2c5da4586d38fc66bb33aafeae4dbda36080f1e) )
ROM_REGION16_LE( 0x8000, "roms", 0 )
ROM_LOAD16_BYTE( "c 900 boot-h v 1.0.bin.u17", 0x0001, 0x4000, CRC(c3aa7fc1) SHA1(ff12dd100fa7b1e7e931e9a8ef4c4f5cc056e099) )
ROM_LOAD16_BYTE( "c 900 boot-l v 1.0.bin.u18", 0x0000, 0x4000, CRC(0aa39272) SHA1(b2c5da4586d38fc66bb33aafeae4dbda36080f1e) )
ROM_REGION( 0x1000, "chargen", 0 )
ROM_REGION( 0x2000, "fdc", 0 )
ROM_LOAD( "s41_6-20-85.bin", 0x0000, 0x2000, CRC(ec245721) SHA1(4cc19014b4887833a56b1236dc5fe39cc5d7b5c3) )
ROM_REGION( 0x1000, "chargen", 0 ) // this must be for the c900 terminal as the mainframe has no video output
ROM_LOAD( "380217-01.u2", 0x0000, 0x1000, CRC(64cb4171) SHA1(e60d796170addfd27e2c33090f9c512c7e3f99f5) )
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1985, c900, 0, 0, c900, c900, driver_device, 0, "Commodore", "Commodore 900", GAME_IS_SKELETON | GAME_NOT_WORKING | GAME_NO_SOUND)
COMP( 1985, c900, 0, 0, c900, c900, driver_device, 0, "Commodore", "Commodore 900", GAME_IS_SKELETON )