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GNAT System 10 [Don Maslin Vintage Computer Archive, AJR]
This commit is contained in:
AJR 2020-06-08 14:29:35 -04:00
parent efb5a1a1ed
commit 2692066575
4 changed files with 89 additions and 0 deletions
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1
scripts/target/mame/mess.lua
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@ -4334,6 +4334,7 @@ files {
MAME_DIR .. "src/mame/drivers/gameking.cpp",
MAME_DIR .. "src/mame/drivers/gigatron.cpp",
MAME_DIR .. "src/mame/drivers/gimix.cpp",
MAME_DIR .. "src/mame/drivers/gnat10.cpp",
MAME_DIR .. "src/mame/drivers/goupil.cpp",
MAME_DIR .. "src/mame/drivers/grfd2301.cpp",
MAME_DIR .. "src/mame/drivers/hazeltin.cpp",

84
src/mame/drivers/gnat10.cpp Normal file
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@ -0,0 +1,84 @@
// license:BSD-3-Clause
// copyright-holders:AJR
/****************************************************************************
Skeleton driver for CP/M system by GNAT Computers.
For more information, visit the following link:
https://classictech.wordpress.com/computer-companies/gnat-computers-san-diego-calif/
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/wd_fdc.h"
#include "machine/z80sio.h"
class gnat10_state : public driver_device
{
public:
gnat10_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_fdc(*this, "fdc")
{
}
void gnat10(machine_config &config);
private:
u8 floppy_status_r();
void mem_map(address_map &map);
void io_map(address_map &map);
required_device<cpu_device> m_maincpu;
required_device<fd1797_device> m_fdc;
};
u8 gnat10_state::floppy_status_r()
{
return m_fdc->drq_r() << 7 | m_fdc->intrq_r();
}
void gnat10_state::mem_map(address_map &map)
{
map(0x0000, 0x0002).rom().region("boot", 0);
map(0x0003, 0xf7ff).ram();
map(0xf800, 0xffff).rom().region("boot", 0);
}
void gnat10_state::io_map(address_map &map)
{
map.global_mask(0xff);
map(0x60, 0x63).rw("sio1", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
map(0x70, 0x73).rw("sio2", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
map(0x80, 0x83).rw(m_fdc, FUNC(fd1797_device::read), FUNC(fd1797_device::write));
map(0xa0, 0xa0).r(FUNC(gnat10_state::floppy_status_r));
}
static INPUT_PORTS_START(gnat10)
INPUT_PORTS_END
void gnat10_state::gnat10(machine_config &config)
{
Z80(config, m_maincpu, 4'000'000);
m_maincpu->set_addrmap(AS_PROGRAM, &gnat10_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &gnat10_state::io_map);
Z80SIO(config, "sio1", 4'000'000); // type unknown
Z80SIO(config, "sio2", 4'000'000); // type unknown
FD1797(config, m_fdc, 1'000'000); // type unknown
// TODO: video screen, peripheral ports
}
ROM_START(gnat10)
ROM_REGION(0x800, "boot", 0)
ROM_LOAD("gnat-507", 0x000, 0x800, CRC(72baa750) SHA1(7b78324b90b8c6f78c88a7dde8d53ea612ea1f7f)) // LF patched back to CR/LF in four instances
ROM_END
COMP(1980, gnat10, 0, 0, gnat10, gnat10, gnat10_state, empty_init, "GNAT Computers", "GNAT System 10", MACHINE_IS_SKELETON)

3
src/mame/mame.lst
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@ -14910,6 +14910,9 @@ gluck2 // 1992 Yung Yu / CYE
@source:gmaster.cpp
gmaster // Hartung Gamemaster
@source:gnat.cpp
gnat10 // GNAT System 10
@source:gng.cpp
diamond // (c) 1989 KH Video (NOT A CAPCOM GAME but runs on GnG hardware)
gng // 9/1985 (c) 1985

1
src/mame/mess.flt
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@ -343,6 +343,7 @@ gizmondo.cpp
gkidabc.cpp
glcx.cpp
gmaster.cpp
gnat10.cpp
goupil.cpp
gp2x.cpp
gp32.cpp