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-rw-r--r--src/mess/machine/at.c313
1 files changed, 0 insertions, 313 deletions
diff --git a/src/mess/machine/at.c b/src/mess/machine/at.c
deleted file mode 100644
index ffc817fbaba..00000000000
--- a/src/mess/machine/at.c
+++ /dev/null
@@ -1,313 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Wilbert Pol, Miodrag Milanovic
-/***************************************************************************
-
- IBM AT Compatibles
-
-***************************************************************************/
-
-#include "includes/at.h"
-
-#define LOG_PORT80 0
-
-/*************************************************************
- *
- * pic8259 configuration
- *
- *************************************************************/
-READ8_MEMBER( at_state::get_slave_ack )
-{
- if (offset==2) // IRQ = 2
- return m_pic8259_slave->acknowledge();
-
- return 0x00;
-}
-
-/*************************************************************************
- *
- * PC Speaker related
- *
- *************************************************************************/
-
-void at_state::at_speaker_set_spkrdata(UINT8 data)
-{
- m_at_spkrdata = data ? 1 : 0;
- m_speaker->level_w(m_at_spkrdata & m_pit_out2);
-}
-
-
-
-/*************************************************************
- *
- * pit8254 configuration
- *
- *************************************************************/
-
-WRITE_LINE_MEMBER( at_state::at_pit8254_out0_changed )
-{
- m_pic8259_master->ir0_w(state);
-}
-
-
-WRITE_LINE_MEMBER( at_state::at_pit8254_out2_changed )
-{
- m_pit_out2 = state ? 1 : 0;
- m_speaker->level_w(m_at_spkrdata & m_pit_out2);
-}
-
-
-/*************************************************************************
- *
- * PC DMA stuff
- *
- *************************************************************************/
-
-READ8_MEMBER( at_state::at_page8_r )
-{
- UINT8 data = m_at_pages[offset % 0x10];
-
- switch(offset % 8)
- {
- case 1:
- data = m_dma_offset[BIT(offset, 3)][2];
- break;
- case 2:
- data = m_dma_offset[BIT(offset, 3)][3];
- break;
- case 3:
- data = m_dma_offset[BIT(offset, 3)][1];
- break;
- case 7:
- data = m_dma_offset[BIT(offset, 3)][0];
- break;
- }
- return data;
-}
-
-
-WRITE8_MEMBER( at_state::at_page8_w )
-{
- m_at_pages[offset % 0x10] = data;
-
- if (LOG_PORT80 && (offset == 0))
- {
- logerror(" at_page8_w(): Port 80h <== 0x%02x (PC=0x%08x)\n", data,
- (unsigned) m_maincpu->pc());
- }
-
- switch(offset % 8)
- {
- case 1:
- m_dma_offset[BIT(offset, 3)][2] = data;
- break;
- case 2:
- m_dma_offset[BIT(offset, 3)][3] = data;
- break;
- case 3:
- m_dma_offset[BIT(offset, 3)][1] = data;
- break;
- case 7:
- m_dma_offset[BIT(offset, 3)][0] = data;
- break;
- }
-}
-
-
-WRITE_LINE_MEMBER( at_state::pc_dma_hrq_changed )
-{
- m_maincpu->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);
-
- /* Assert HLDA */
- m_dma8237_2->hack_w(state);
-}
-
-READ8_MEMBER(at_state::pc_dma_read_byte)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM); // get the right address space
- if(m_dma_channel == -1)
- return 0xff;
- UINT8 result;
- offs_t page_offset = (((offs_t) m_dma_offset[0][m_dma_channel]) << 16) & 0xFF0000;
-
- result = prog_space.read_byte(page_offset + offset);
- return result;
-}
-
-
-WRITE8_MEMBER(at_state::pc_dma_write_byte)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM); // get the right address space
- if(m_dma_channel == -1)
- return;
- offs_t page_offset = (((offs_t) m_dma_offset[0][m_dma_channel]) << 16) & 0xFF0000;
-
- prog_space.write_byte(page_offset + offset, data);
-}
-
-
-READ8_MEMBER(at_state::pc_dma_read_word)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM); // get the right address space
- if(m_dma_channel == -1)
- return 0xff;
- UINT16 result;
- offs_t page_offset = (((offs_t) m_dma_offset[1][m_dma_channel & 3]) << 16) & 0xFE0000;
-
- result = prog_space.read_word(page_offset + ( offset << 1 ) );
- m_dma_high_byte = result & 0xFF00;
-
- return result & 0xFF;
-}
-
-
-WRITE8_MEMBER(at_state::pc_dma_write_word)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM); // get the right address space
- if(m_dma_channel == -1)
- return;
- offs_t page_offset = (((offs_t) m_dma_offset[1][m_dma_channel & 3]) << 16) & 0xFE0000;
-
- prog_space.write_word(page_offset + ( offset << 1 ), m_dma_high_byte | data);
-}
-
-READ8_MEMBER( at_state::pc_dma8237_0_dack_r ) { return m_isabus->dack_r(0); }
-READ8_MEMBER( at_state::pc_dma8237_1_dack_r ) { return m_isabus->dack_r(1); }
-READ8_MEMBER( at_state::pc_dma8237_2_dack_r ) { return m_isabus->dack_r(2); }
-READ8_MEMBER( at_state::pc_dma8237_3_dack_r ) { return m_isabus->dack_r(3); }
-READ8_MEMBER( at_state::pc_dma8237_5_dack_r ) { UINT16 ret = m_isabus->dack16_r(5); m_dma_high_byte = ret & 0xff00; return ret; }
-READ8_MEMBER( at_state::pc_dma8237_6_dack_r ) { UINT16 ret = m_isabus->dack16_r(6); m_dma_high_byte = ret & 0xff00; return ret; }
-READ8_MEMBER( at_state::pc_dma8237_7_dack_r ) { UINT16 ret = m_isabus->dack16_r(7); m_dma_high_byte = ret & 0xff00; return ret; }
-
-
-WRITE8_MEMBER( at_state::pc_dma8237_0_dack_w ){ m_isabus->dack_w(0, data); }
-WRITE8_MEMBER( at_state::pc_dma8237_1_dack_w ){ m_isabus->dack_w(1, data); }
-WRITE8_MEMBER( at_state::pc_dma8237_2_dack_w ){ m_isabus->dack_w(2, data); }
-WRITE8_MEMBER( at_state::pc_dma8237_3_dack_w ){ m_isabus->dack_w(3, data); }
-WRITE8_MEMBER( at_state::pc_dma8237_5_dack_w ){ m_isabus->dack16_w(5, m_dma_high_byte | data); }
-WRITE8_MEMBER( at_state::pc_dma8237_6_dack_w ){ m_isabus->dack16_w(6, m_dma_high_byte | data); }
-WRITE8_MEMBER( at_state::pc_dma8237_7_dack_w ){ m_isabus->dack16_w(7, m_dma_high_byte | data); }
-
-WRITE_LINE_MEMBER( at_state::at_dma8237_out_eop )
-{
- m_cur_eop = state == ASSERT_LINE;
- if(m_dma_channel != -1)
- m_isabus->eop_w(m_dma_channel, m_cur_eop ? ASSERT_LINE : CLEAR_LINE );
-}
-
-void at_state::pc_set_dma_channel(int channel, int state)
-{
- if(!state) {
- m_dma_channel = channel;
- if(m_cur_eop)
- m_isabus->eop_w(channel, ASSERT_LINE );
-
- } else if(m_dma_channel == channel) {
- m_dma_channel = -1;
- if(m_cur_eop)
- m_isabus->eop_w(channel, CLEAR_LINE );
- }
-}
-
-WRITE_LINE_MEMBER( at_state::pc_dack0_w ) { pc_set_dma_channel(0, state); }
-WRITE_LINE_MEMBER( at_state::pc_dack1_w ) { pc_set_dma_channel(1, state); }
-WRITE_LINE_MEMBER( at_state::pc_dack2_w ) { pc_set_dma_channel(2, state); }
-WRITE_LINE_MEMBER( at_state::pc_dack3_w ) { pc_set_dma_channel(3, state); }
-WRITE_LINE_MEMBER( at_state::pc_dack4_w ) { m_dma8237_1->hack_w(state ? 0 : 1); } // it's inverted
-WRITE_LINE_MEMBER( at_state::pc_dack5_w ) { pc_set_dma_channel(5, state); }
-WRITE_LINE_MEMBER( at_state::pc_dack6_w ) { pc_set_dma_channel(6, state); }
-WRITE_LINE_MEMBER( at_state::pc_dack7_w ) { pc_set_dma_channel(7, state); }
-
-READ8_MEMBER( at_state::at_portb_r )
-{
- UINT8 data = m_at_speaker;
- data &= ~0xd0; /* AT BIOS don't likes this being set */
-
- /* 0x10 is the dram refresh line bit, 15.085us. */
- data |= (machine().time().as_ticks(110000) & 1) ? 0x10 : 0;
-
- if (m_pit_out2)
- data |= 0x20;
- else
- data &= ~0x20; /* ps2m30 wants this */
-
- return data;
-}
-
-WRITE8_MEMBER( at_state::at_portb_w )
-{
- m_at_speaker = data;
- m_pit8254->write_gate2(BIT(data, 0));
- at_speaker_set_spkrdata( BIT(data, 1));
- m_channel_check = BIT(data, 3);
- m_isabus->set_nmi_state((m_nmi_enabled==0) && (m_channel_check==0));
-}
-
-READ8_MEMBER( at_state::ps2_portb_r )
-{
- UINT8 data = m_at_speaker;
- data &= ~0xd0; /* AT BIOS don't likes this being set */
-
- /* 0x10 is the dram refresh line bit, 15.085us. */
- data |= (machine().time().as_ticks(66291) & 1) ? 0x10 : 0;
-
- if (m_pit_out2)
- data |= 0x20;
- else
- data &= ~0x20; /* ps2m30 wants this */
-
- return data;
-}
-
-
-/**********************************************************
- *
- * Init functions
- *
- **********************************************************/
-
-void at_state::init_at_common(int xmsbase)
-{
- address_space& space = m_maincpu->space(AS_PROGRAM);
-
- /* MESS managed RAM */
- membank("bank10")->set_base(m_ram->pointer());
-
- if (m_ram->size() > xmsbase)
- {
- offs_t ram_limit = 0x100000 + m_ram->size() - xmsbase;
- space.install_read_bank(0x100000, ram_limit - 1, "bank1");
- space.install_write_bank(0x100000, ram_limit - 1, "bank1");
- membank("bank1")->set_base(m_ram->pointer() + xmsbase);
- }
-}
-
-DRIVER_INIT_MEMBER(at_state,atcga)
-{
- init_at_common(0xa0000);
-}
-
-DRIVER_INIT_MEMBER(at_state,atvga)
-{
- init_at_common(0xa0000);
-}
-
-DRIVER_INIT_MEMBER(at_state,atpci)
-{
- init_at_common(0x100000);
-}
-
-DRIVER_INIT_MEMBER(at586_state,at586)
-{
-}
-
-MACHINE_START_MEMBER(at_state,at)
-{
-}
-
-MACHINE_RESET_MEMBER(at_state,at)
-{
- m_at_spkrdata = 0;
- m_pit_out2 = 1;
- m_dma_channel = -1;
- m_cur_eop = false;
-}