// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
P112 Single Board Computer
30/08/2010 Skeleton driver
The P112 is a stand-alone 8-bit CPU board. Typically running CP/M (tm) or a
similar operating system, it provides a Z80182 (Z-80 upgrade) CPU with up to
1MB of memory, serial, parallel and diskette IO, and realtime clock, in a
3.5-inch drive form factor. Powered solely from 5V, it draws 150mA (nominal:
not including disk drives) with a 16MHz CPU clock. Clock speeds up to 24.576MHz
are possible.
http://members.iinet.net.au/~daveb/p112/p112.html
Some of the parts:
32kHz crystal 1 Y2 (RTC crystal)
16MHz crystal 1 Y1 Parallel resonant (CPU clock)
24MHz crystal 1 Y3 Parallel resonant (IO chip clock)
28F256A 1 U4 (Intel Flash ROM, programmed)
74HCT00 1 U5
74ACT02 1 U8
74ACT139 1 U11
62256 2 U2 U3 (Static RAM, 32kB)
DS1202 1 U6 (Dallas RTC chip)
FDC37C665IR 1 U9 (SMC Super-IO chip)
LT1133 2 U7 U10 (Linear Technology RS232 Tx/Rx)
NMF0512S 1 U12 (Newport Components Flash ROM power)
TL7705ACP 1 U15 (Texas Insts. Reset genr.)
Z8018216 1 U1 (Zilog CPU chip)
****************************************************************************/
#include "emu.h"
#include "cpu/z180/z180.h"
#include "emupal.h"
#include "screen.h"
class p112_state : public driver_device
{
public:
p112_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) ,
m_maincpu(*this, "maincpu") { }
void p112(machine_config &config);
private:
virtual void machine_reset() override;
virtual void video_start() override;
uint32_t screen_update_p112(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
required_device<cpu_device> m_maincpu;
void p112_io(address_map &map);
void p112_mem(address_map &map);
};
void p112_state::p112_mem(address_map &map)
{
map.unmap_value_high();
map(0x00000, 0x07fff).rom();
map(0x08000, 0xfffff).ram();
}
void p112_state::p112_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
}
/* Input ports */
static INPUT_PORTS_START( p112 )
INPUT_PORTS_END
void p112_state::machine_reset()
{
}
void p112_state::video_start()
{
}
uint32_t p112_state::screen_update_p112(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
return 0;
}
MACHINE_CONFIG_START(p112_state::p112)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu",Z180, XTAL(16'000'000))
MCFG_DEVICE_PROGRAM_MAP(p112_mem)
MCFG_DEVICE_IO_MAP(p112_io)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(240, 320)
MCFG_SCREEN_VISIBLE_AREA(0, 240-1, 0, 320-1)
MCFG_SCREEN_UPDATE_DRIVER(p112_state, screen_update_p112)
MCFG_SCREEN_PALETTE("palette")
MCFG_PALETTE_ADD_MONOCHROME("palette")
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( p112 )
ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF )
ROM_SYSTEM_BIOS( 0, "960513", "ver 13-05-1996" )
ROMX_LOAD( "960513.bin", 0x00000, 0x8000, CRC(077c1c40) SHA1(c1e6b4b0de50bba90f0d4667f9344815bb578b9b), ROM_BIOS(0))
ROM_SYSTEM_BIOS( 1, "970308", "ver 08-03-1997" )
ROMX_LOAD( "970308.bin", 0x00000, 0x8000, CRC(15e61f0d) SHA1(66ba1af7da0450b69650086ab20230390ba23e17), ROM_BIOS(1))
ROM_SYSTEM_BIOS( 2, "4b1", "ver 4b1" )
ROMX_LOAD( "romv4b1.bin", 0x00000, 0x8000, CRC(15d79beb) SHA1(f971f75a717e3f6d59b257eb3af369d4d2e0f301), ROM_BIOS(2))
ROM_SYSTEM_BIOS( 3, "4b2", "ver 4b2" )
ROMX_LOAD( "romv4b2.bin", 0x00000, 0x8000, CRC(9b9a8a5e) SHA1(c40151ee654008b9f803d6a05d692a5a3619a726), ROM_BIOS(3))
ROM_SYSTEM_BIOS( 4, "4b3", "ver 4b3" )
ROMX_LOAD( "romv4b3.bin", 0x00000, 0x8000, CRC(734031ea) SHA1(2e5e5ac6bd17d15cab24a36bc3da42ca49cbde92), ROM_BIOS(4))
ROM_SYSTEM_BIOS( 5, "4b4", "ver 4b4" )
ROMX_LOAD( "romv4b4.bin", 0x00000, 0x8000, CRC(cd419c40) SHA1(6002130d874387c9ec23b4363fe9f0ca78208878), ROM_BIOS(5))
ROM_SYSTEM_BIOS( 6, "5", "ver 5" )
ROMX_LOAD( "051103.bin", 0x00000, 0x8000, CRC(6c47ec13) SHA1(24f5bf1524425186fe10e1d29d05f6efbd3366d9), ROM_BIOS(6))
ROM_SYSTEM_BIOS( 7, "5b1", "ver 5b1" )
ROMX_LOAD( "romv5b1.bin", 0x00000, 0x8000, CRC(047296f7) SHA1(380f8e4237525636c605b7e37d989ace8437beb4), ROM_BIOS(7))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1996, p112, 0, 0, p112, p112, p112_state, empty_init, "Dave Brooks", "P112", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)