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https://github.com/holub/mame
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mikromik: Use LS259 device and add bankdev for MMU I/O block (nw)
This commit is contained in:
AJR
parent
9f6ea7b8cc
commit
70385ccc5a
@ -54,6 +54,7 @@
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#include "emu.h"
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#include "includes/mikromik.h"
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#include "machine/74259.h"
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#include "softlist.h"
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//#define VERBOSE 1
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@ -89,43 +90,7 @@ READ8_MEMBER( mm1_state::read )
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if (mmu & MMU_IOEN)
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{
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switch ((offset >> 4) & 0x07)
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{
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case 0:
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data = m_dmac->read(offset & 0x0f);
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break;
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case 1:
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data = m_mpsc->cd_ba_r(space, offset & 0x03);
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break;
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case 2:
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data = m_crtc->read(space, offset & 0x01);
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break;
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case 3:
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data = m_pit->read(offset & 0x03);
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break;
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case 4:
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data = m_iop->read(space, 0);
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break;
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case 5:
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if (BIT(offset, 0))
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{
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data = m_fdc->fifo_r();
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}
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else
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{
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data = m_fdc->msr_r();
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}
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break;
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case 7:
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data = m_hgdc->read(offset & 0x01);
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break;
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}
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data = m_io->read8(offset & 0x7f);
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}
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else
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{
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@ -158,43 +123,7 @@ WRITE8_MEMBER( mm1_state::write )
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if (mmu & MMU_IOEN)
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{
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switch ((offset >> 4) & 0x07)
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{
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case 0:
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m_dmac->write(offset & 0x0f, data);
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break;
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case 1:
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m_mpsc->cd_ba_w(space, offset & 0x03, data);
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break;
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case 2:
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m_crtc->write(space, offset & 0x01, data);
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break;
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case 3:
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m_pit->write(offset & 0x03, data);
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break;
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case 4:
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m_iop->write(space, 0, data);
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break;
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case 5:
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if (BIT(offset, 0))
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{
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m_fdc->fifo_w(data);
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}
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break;
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case 6:
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ls259_w(space, offset & 0x07, data);
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break;
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case 7:
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m_hgdc->write(offset & 0x01, data);
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break;
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}
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m_io->write8(offset & 0x7f, data);
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}
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else
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{
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@ -207,53 +136,88 @@ WRITE8_MEMBER( mm1_state::write )
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//-------------------------------------------------
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// ls259_w -
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// a8_w -
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//-------------------------------------------------
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WRITE8_MEMBER( mm1_state::ls259_w )
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WRITE_LINE_MEMBER( mm1_state::a8_w )
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{
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int d = BIT(data, 0);
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LOG("IC24 A8 %u\n", state);
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m_a8 = state;
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}
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switch (offset)
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{
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case 0: // IC24 A8
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LOG("IC24 A8 %u\n", d);
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m_a8 = d;
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break;
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case 1: // RECALL
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LOG("RECALL %u\n", d);
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m_recall = d;
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if (d) m_fdc->soft_reset();
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break;
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//-------------------------------------------------
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// recall_w -
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//-------------------------------------------------
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case 2: // _RV28/RX21
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m_rx21 = d;
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break;
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WRITE_LINE_MEMBER( mm1_state::recall_w )
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{
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LOG("RECALL %u\n", state);
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m_recall = state;
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if (state) m_fdc->soft_reset();
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}
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case 3: // _TX21
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m_tx21 = d;
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break;
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case 4: // _RCL
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m_rcl = d;
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break;
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//-------------------------------------------------
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// rx21_w -
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//-------------------------------------------------
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case 5: // _INTC
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m_intc = d;
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break;
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WRITE_LINE_MEMBER( mm1_state::rx21_w )
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{
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m_rx21 = state;
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}
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case 6: // LLEN
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LOG("LLEN %u\n", d);
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m_llen = d;
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break;
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case 7: // MOTOR ON
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LOG("MOTOR %u\n", d);
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m_floppy0->mon_w(!d);
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m_floppy1->mon_w(!d);
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break;
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}
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//-------------------------------------------------
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// tx21_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( mm1_state::tx21_w )
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{
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m_tx21 = state;
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}
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//-------------------------------------------------
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// rcl_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( mm1_state::rcl_w )
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{
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m_rcl = state;
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}
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//-------------------------------------------------
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// intc_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( mm1_state::intc_w )
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{
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m_intc = state;
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}
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//-------------------------------------------------
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// llen_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( mm1_state::llen_w )
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{
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LOG("LLEN %u\n", state);
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m_llen = state;
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}
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//-------------------------------------------------
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// motor_on_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( mm1_state::motor_on_w )
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{
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LOG("MOTOR %u\n", state);
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m_floppy0->mon_w(!state);
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m_floppy1->mon_w(!state);
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}
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@ -271,6 +235,18 @@ void mm1_state::mm1_map(address_map &map)
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map(0x0000, 0xffff).rw(FUNC(mm1_state::read), FUNC(mm1_state::write));
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}
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void mm1_state::mmu_io_map(address_map &map)
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{
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map(0x00, 0x0f).rw(m_dmac, FUNC(am9517a_device::read), FUNC(am9517a_device::write));
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map(0x10, 0x13).mirror(0x0c).rw(m_mpsc, FUNC(upd7201_device::cd_ba_r), FUNC(upd7201_device::cd_ba_w));
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map(0x20, 0x21).mirror(0x0e).rw(m_crtc, FUNC(i8275_device::read), FUNC(i8275_device::write));
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map(0x30, 0x33).mirror(0x0c).rw(m_pit, FUNC(pit8253_device::read), FUNC(pit8253_device::write));
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map(0x40, 0x40).mirror(0x0f).rw(m_iop, FUNC(i8212_device::read), FUNC(i8212_device::write));
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map(0x50, 0x51).mirror(0x0e).m(m_fdc, FUNC(upd765a_device::map));
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map(0x60, 0x67).mirror(0x08).w("outlatch", FUNC(ls259_device::write_d0));
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map(0x70, 0x71).mirror(0x0e).rw(m_hgdc, FUNC(upd7220_device::read), FUNC(upd7220_device::write));
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}
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//**************************************************************************
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@ -437,14 +413,6 @@ void mm1_state::machine_start()
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void mm1_state::machine_reset()
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{
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address_space &program = m_maincpu->space(AS_PROGRAM);
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// reset LS259
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for (int i = 0; i < 8; i++)
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{
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ls259_w(program, i, 0);
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}
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// reset FDC
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m_fdc->reset();
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}
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@ -470,10 +438,25 @@ void mm1_state::mm1(machine_config &config)
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config.m_perfect_cpu_quantum = subtag(I8085A_TAG);
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// peripheral hardware
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ADDRESS_MAP_BANK(config, m_io);
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m_io->set_addrmap(0, &mm1_state::mmu_io_map);
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m_io->set_data_width(8);
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m_io->set_addr_width(7);
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I8212(config, m_iop, 0);
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m_iop->int_wr_callback().set_inputline(m_maincpu, I8085_RST65_LINE);
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m_iop->di_rd_callback().set(KB_TAG, FUNC(mm1_keyboard_device::read));
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ls259_device &outlatch(LS259(config, "outlatch"));
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outlatch.q_out_cb<0>().set(FUNC(mm1_state::a8_w)); // IC24 A8
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outlatch.q_out_cb<1>().set(FUNC(mm1_state::recall_w)); // RECALL
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outlatch.q_out_cb<2>().set(FUNC(mm1_state::rx21_w)); // _RV28/RX21
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outlatch.q_out_cb<3>().set(FUNC(mm1_state::tx21_w)); // _TX21
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outlatch.q_out_cb<4>().set(FUNC(mm1_state::rcl_w)); // _RCL
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outlatch.q_out_cb<5>().set(FUNC(mm1_state::intc_w)); // _INTC
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outlatch.q_out_cb<6>().set(FUNC(mm1_state::llen_w)); // LLEN
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outlatch.q_out_cb<7>().set(FUNC(mm1_state::motor_on_w)); // MOTOR ON
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AM9517A(config, m_dmac, 6.144_MHz_XTAL/2);
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m_dmac->out_hreq_callback().set(FUNC(mm1_state::dma_hrq_w));
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m_dmac->out_eop_callback().set(FUNC(mm1_state::dma_eop_w));
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@ -10,6 +10,7 @@
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#include "formats/mm_dsk.h"
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#include "imagedev/floppy.h"
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#include "machine/am9517a.h"
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#include "machine/bankdev.h"
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#include "machine/i8212.h"
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#include "machine/mm1kb.h"
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#include "machine/pit8253.h"
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@ -40,6 +41,7 @@ public:
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mm1_state(const machine_config &mconfig, device_type type, const char *tag) :
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driver_device(mconfig, type, tag),
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m_maincpu(*this, I8085A_TAG),
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m_io(*this, "io"),
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m_iop(*this, I8212_TAG),
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m_dmac(*this, I8237_TAG),
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m_pit(*this, I8253_TAG),
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@ -76,6 +78,7 @@ protected:
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private:
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required_device<i8085a_cpu_device> m_maincpu;
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required_device<address_map_bank_device> m_io;
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required_device<i8212_device> m_iop;
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required_device<am9517a_device> m_dmac;
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required_device<pit8253_device> m_pit;
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@ -116,7 +119,14 @@ private:
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DECLARE_READ8_MEMBER( read );
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DECLARE_WRITE8_MEMBER( write );
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DECLARE_WRITE8_MEMBER( ls259_w );
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DECLARE_WRITE_LINE_MEMBER( a8_w );
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DECLARE_WRITE_LINE_MEMBER( recall_w );
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DECLARE_WRITE_LINE_MEMBER( rx21_w );
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DECLARE_WRITE_LINE_MEMBER( tx21_w );
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DECLARE_WRITE_LINE_MEMBER( rcl_w );
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DECLARE_WRITE_LINE_MEMBER( intc_w );
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DECLARE_WRITE_LINE_MEMBER( llen_w );
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DECLARE_WRITE_LINE_MEMBER( motor_on_w );
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DECLARE_WRITE_LINE_MEMBER( dma_hrq_w );
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DECLARE_READ8_MEMBER( mpsc_dack_r );
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DECLARE_WRITE8_MEMBER( mpsc_dack_w );
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@ -136,6 +146,7 @@ private:
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UPD7220_DISPLAY_PIXELS_MEMBER( hgdc_display_pixels );
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void mm1_palette(palette_device &palette) const;
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void mm1_map(address_map &map);
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void mmu_io_map(address_map &map);
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void mm1_upd7220_map(address_map &map);
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};
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