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bus/isa/np600: More findings (nw)

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This commit is contained in:
AJR 2019-04-29 22:42:11 -04:00
parent fa8d5aa902
commit 5b062625c5
3 changed files with 14 additions and 2 deletions
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14
src/devices/bus/isa/np600.cpp
View File

@ -11,6 +11,7 @@
#include "cpu/i86/i186.h"
#include "machine/74259.h"
#include "machine/gen_latch.h"
DEFINE_DEVICE_TYPE(NP600A3, np600a3_device, "np600a3", "InterLan NP600A-3 Intelligent Protocol Processor")
@ -32,6 +33,11 @@ void np600a3_device::lcc_ca_w(u16 data)
m_lcc->ca(1);
}
WRITE_LINE_MEMBER(np600a3_device::host_int_w)
{
logerror("%s: Host interrupt %s\n", machine().describe_context(), state ? "asserted" : "cleared");
}
u16 np600a3_device::status_r()
{
return 0;
@ -40,6 +46,8 @@ u16 np600a3_device::status_r()
void np600a3_device::mem_map(address_map &map)
{
map(0x00000, 0x7ffff).ram().share("netram"); // GM71256-12 x16
map(0xc0000, 0xc0001).mirror(0xfffe).r("fromhost", FUNC(generic_latch_16_device::read));
map(0xc0000, 0xc0001).mirror(0xfffe).w("tohost", FUNC(generic_latch_16_device::write));
map(0xfc000, 0xfffff).rom().region("npcpu", 0);
}
@ -63,9 +71,13 @@ void np600a3_device::device_add_mconfig(machine_config &config)
m_npcpu->set_addrmap(AS_IO, &np600a3_device::io_map);
ls259_device &bitlatch(LS259(config, "bitlatch")); // U28
bitlatch.q_out_cb<1>().set(FUNC(np600a3_device::host_int_w));
bitlatch.q_out_cb<4>().set(m_lcc, FUNC(i82586_device::reset_w)).invert();
I82586(config, m_lcc, 20_MHz_XTAL);
GENERIC_LATCH_16(config, "fromhost");
GENERIC_LATCH_16(config, "tohost");
I82586(config, m_lcc, 16_MHz_XTAL / 2); // clock presumed (20 MHz XTAL also present for SEEQ DQ8023A transceiver)
m_lcc->set_addrmap(0, &np600a3_device::lcc_map);
m_lcc->out_irq_cb().set(m_npcpu, FUNC(i80186_cpu_device::tmrin1_w));
}

1
src/devices/bus/isa/np600.h
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@ -28,6 +28,7 @@ protected:
private:
void lcc_ca_w(u16 data);
DECLARE_WRITE_LINE_MEMBER(host_int_w);
u16 status_r();
void mem_map(address_map &map);

1
src/devices/machine/i82586.cpp
View File

@ -38,7 +38,6 @@
#define LOG_FILTER (1U << 2)
#define LOG_CONFIG (1U << 3)
#define VERBOSE LOG_GENERAL
//#define VERBOSE (LOG_GENERAL | LOG_FRAMES | LOG_FILTER | LOG_CONFIG)
#include "logmacro.h"