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e9161: Add bus error handlers and enough RAM to push this a little further (nw)

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This commit is contained in:
AJR 2019-06-04 19:11:35 -04:00
parent f1e8b14979
commit 1f50920fbd
1 changed files with 21 additions and 1 deletions
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22
src/mame/drivers/e9161.cpp
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@ -27,6 +27,9 @@ public:
void e9161(machine_config &config);
private:
u16 berr_r();
void berr_w(u16 data);
void mem_map(address_map &map);
required_device<cpu_device> m_maincpu;
@ -34,11 +37,28 @@ private:
};
u16 e9161_state::berr_r()
{
if (!machine().side_effects_disabled())
m_maincpu->set_input_line(M68K_LINE_BUSERROR, ASSERT_LINE);
return 0xffff;
}
void e9161_state::berr_w(u16 data)
{
if (!machine().side_effects_disabled())
m_maincpu->set_input_line(M68K_LINE_BUSERROR, ASSERT_LINE);
}
void e9161_state::mem_map(address_map &map)
{
map(0x000000, 0x000007).rom().region("program", 0);
map(0x018000, 0x0187ff).ram();
map(0x000008, 0x01ffff).ram();
map(0x020000, 0x020001).w(FUNC(e9161_state::berr_w));
map(0xa00000, 0xa00001).mirror(0x1ffffe).r(FUNC(e9161_state::berr_r));
map(0xc00000, 0xc03fff).rom().region("program", 0);
map(0xe00000, 0xe03fff).ram();
map(0xffe000, 0xffe03f).rw(m_dmac, FUNC(hd63450_device::read), FUNC(hd63450_device::write));
}