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np600: Map a few I/O registers (nw)

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This commit is contained in:
AJR 2019-01-26 15:45:13 -05:00
parent 3f9fef78a3
commit dfbefcfd78
2 changed files with 18 additions and 0 deletions
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15
src/devices/bus/isa/np600.cpp
View File

@ -10,6 +10,7 @@
#include "np600.h"
#include "cpu/i86/i186.h"
#include "machine/74259.h"
//#include "machine/i82586.h"
DEFINE_DEVICE_TYPE(NP600A3, np600a3_device, "np600a3", "InterLan NP600A-3 Intelligent Protocol Processor")
@ -25,16 +26,30 @@ void np600a3_device::device_start()
{
}
u16 np600a3_device::status_r()
{
return 0;
}
void np600a3_device::mem_map(address_map &map)
{
map(0x00000, 0x7ffff).ram(); // GM71256-12 x16
map(0xfc000, 0xfffff).rom().region("npcpu", 0);
}
void np600a3_device::io_map(address_map &map)
{
map(0x0070, 0x007f).w("latch70", FUNC(ls259_device::write_a0));
map(0x0080, 0x0081).r(FUNC(np600a3_device::status_r));
}
void np600a3_device::device_add_mconfig(machine_config &config)
{
I80186(config, m_npcpu, 16_MHz_XTAL);
m_npcpu->set_addrmap(AS_PROGRAM, &np600a3_device::mem_map);
m_npcpu->set_addrmap(AS_IO, &np600a3_device::io_map);
LS259(config, "latch70"); // U28
//I82586(config, "enet", 20_MHz_XTAL);
}

3
src/devices/bus/isa/np600.h
View File

@ -26,7 +26,10 @@ protected:
virtual const tiny_rom_entry *device_rom_region() const override;
private:
u16 status_r();
void mem_map(address_map &map);
void io_map(address_map &map);
required_device<cpu_device> m_npcpu;
};