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https://github.com/holub/mame
synced 2025-04-22 08:22:15 +03:00
(PC-ISA): Add Lba enhancer card (28 bit LBA) (#3465)
* Create lbaenhancer.cpp * Create lbaenhancer (header file) * Update isa_cards.cpp (storage section) * Update isa_cards (lba_gen added to SLOT_INTERFACE) * Update bus.lua * Update lbaenhancer.cpp * Update isa_cards.cpp * Update lbaenhancer.h * Update lbaenhancer.cpp * Update lbaenhancer.cpp * Update lbaenhancer.cpp * Update lbaenhancer.cpp device_reset() changed to make sure ROM is installed only once. Old solution used a static variable and was unsafe. * Update lbaenhancer.h Add variable to ensure ROM is only installed once per session. * Update lbaenhancer.cpp * Update lbaenhancer: CONFNAME jumpers, not DIPs. * Update lbaenhancer (spacing)
This commit is contained in:
Bavarese
R. Belmont
parent
1e94c67dd9
commit
88b77caea7
@ -1136,6 +1136,8 @@ if (BUSES["ISA"]~=null) then
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MAME_DIR .. "src/devices/bus/isa/myb3k_fdc.h",
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MAME_DIR .. "src/devices/bus/isa/eis_sad8852.cpp",
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MAME_DIR .. "src/devices/bus/isa/eis_sad8852.h",
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MAME_DIR .. "src/devices/bus/isa/lbaenhancer.cpp",
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MAME_DIR .. "src/devices/bus/isa/lbaenhancer.h",
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}
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end
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@ -34,6 +34,7 @@
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#include "aha1542.h"
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#include "wd1002a_wx1.h"
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#include "mcd.h"
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#include "lbaenhancer.h"
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// sound
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#include "adlib.h"
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@ -106,6 +107,7 @@ SLOT_INTERFACE_START( pc_isa8_cards )
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SLOT_INTERFACE("wd1002a_wx1", ISA8_WD1002A_WX1)
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SLOT_INTERFACE("dectalk", ISA8_DECTALK)
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SLOT_INTERFACE("pds", ISA8_PDS)
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SLOT_INTERFACE("lba_enhancer", ISA8_LBA_ENHANCER)
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SLOT_INTERFACE_END
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SLOT_INTERFACE_START( pc_isa16_cards )
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@ -141,6 +143,7 @@ SLOT_INTERFACE_START( pc_isa16_cards )
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SLOT_INTERFACE("fdcsmc", ISA8_FDC_SMC)
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SLOT_INTERFACE("dectalk", ISA8_DECTALK)
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SLOT_INTERFACE("pds", ISA8_PDS)
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SLOT_INTERFACE("lba_enhancer", ISA8_LBA_ENHANCER)
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// 16-bit
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SLOT_INTERFACE("ide", ISA16_IDE)
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SLOT_INTERFACE("ne2000", NE2000)
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150
src/devices/bus/isa/lbaenhancer.cpp
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150
src/devices/bus/isa/lbaenhancer.cpp
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@ -0,0 +1,150 @@
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// license:BSD-3-Clause
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// copyright-holders:Bavarese
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/**********************************************************************
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VS Systems LBA Enhancer (ISA; 1995).
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***********************************************************************
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Generic BIOS extension card. Adds 28 bit LBA mode to any pre-1994
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board with an empty ISA slot.
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Supports 1 to 4 large hard disks. Bios boot remains possible.
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Check date code of Ami BIOS (at bottom of boot screen):
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40-0100-001139-00101111-111192-486ABC-F (111192 will not support LBA)
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50-0100-001292-00101111-072594-ABCDEF-F (072594 will support LBA)
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See: ftp://ami.com/archive/utility/LBA.TXT
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Usage:
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select type 47 for each LBA drive and set C,H,S (params) to '8',
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then repartition and reformat (Fdisk and Format). Data is lost.
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Other notes: ROM bank should be excluded in EMM386.
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C8000 - CBFFF is sometimes occupied (by graphics).
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Changes to the ROM location require a hard reset!
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Requirements:
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Compatible OS (DOS >= 6.22) and LBA capable drive(s).
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***********************************************************************
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PCB Layout
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----------
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|-------------------------------------------|
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| EPROM CD74LS245 |
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| J3,J2,J1 |
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| PAL16V8 |
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|---| |---|
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|-----------------------------------|
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Notes:
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J3, J2, J1 set BIOS (start) address to C800, CC00, D000, D400, D800 or DC00
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- one CD74LS245
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- one PALCE16V8H-25
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- one 32 K EPROM : 27C256 (STM) (mirrored after 16 K)
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*/
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#include "emu.h"
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#include "lbaenhancer.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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DEFINE_DEVICE_TYPE(ISA8_LBA_ENHANCER, lba_enhancer_device, "lba_enhancer", "VS Systems LBA Enhancer BIOS 1995")
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//-------------------------------------------------
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// ROM( lba_enhancer )
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//-------------------------------------------------
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ROM_START( lbabios )
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ROM_REGION( 0xc8000, "lbabios", 0 )
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ROM_LOAD( "lbaenhancer.bin", 0x0000, 0x04000, CRC(39d4566d) SHA1(d275193a870250f212dc29768d4e68fb43770e95) )
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ROM_END
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const tiny_rom_entry *lba_enhancer_device::device_rom_region() const
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{
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return ROM_NAME( lbabios );
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}
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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MACHINE_CONFIG_START( lba_enhancer_device::device_add_mconfig )
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// MCFG_DEVICE_ADD("lba_enhancer", lba_enhancer, 0)
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MACHINE_CONFIG_END
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//-------------------------------------------------
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// jumpers
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//-------------------------------------------------
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static INPUT_PORTS_START( lba_enhancer_dsw )
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PORT_START("ROM_ADDRESS")
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PORT_CONFNAME( 0x07, 0x00, "16 K ROM bank")
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PORT_CONFSETTING( 0, "C8000 - CBFFF" )
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PORT_CONFSETTING( 1, "CC000 - CFFFF" )
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PORT_CONFSETTING( 2, "D0000 - D3FFF" )
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PORT_CONFSETTING( 3, "D4000 - D7FFF" )
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PORT_CONFSETTING( 4, "D8000 - DBFFF" )
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PORT_CONFSETTING( 5, "DC000 - DFFFF" )
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INPUT_PORTS_END
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//-------------------------------------------------
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// isa8_areplay_device - constructor
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//-------------------------------------------------
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ioport_constructor lba_enhancer_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME( lba_enhancer_dsw );
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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// Byte 3 in extra BIOS specifies 8 blocks of 512 byte (4K)
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void lba_enhancer_device::device_start()
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{
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set_isa_device();
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void lba_enhancer_device::device_reset()
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{
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if(m_current_rom_start == 0)
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{
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m_current_rom_start = 0xc8000 + (ioport("ROM_ADDRESS")->read()* 0x4000);
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uint32_t current_rom_end = m_current_rom_start + 0x04000 - 1;
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m_isa->install_rom(this, m_current_rom_start, current_rom_end, "lbabios", "lbabios");
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logerror("LBA enhancer (for 28 bit LBA) located at BIOS address %x - %x\n", m_current_rom_start, current_rom_end);
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}
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}
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//-------------------------------------------------
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// lba_enhancer_device - constructor
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//-------------------------------------------------
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lba_enhancer_device::lba_enhancer_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, ISA8_LBA_ENHANCER, tag, owner, clock)
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, device_isa8_card_interface(mconfig, *this)
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{
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m_current_rom_start = 0;
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}
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44
src/devices/bus/isa/lbaenhancer.h
Normal file
44
src/devices/bus/isa/lbaenhancer.h
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@ -0,0 +1,44 @@
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// license:BSD-3-Clause
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// copyright-holders:Bavarese
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/**********************************************************************
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VS Systems LBA Enhancer (ISA; 1995).
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**********************************************************************/
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#ifndef MAME_BUS_ISA_LBA_ENHANCER_H
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#define MAME_BUS_ISA_LBA_ENHANCER_H
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#pragma once
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#include "isa.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class lba_enhancer_device : public device_t,
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public device_isa8_card_interface
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{
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public:
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// construction/destruction
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lba_enhancer_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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protected:
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// device-level overrides
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virtual void device_start() override;
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virtual void device_reset() override;
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// optional information overrides
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virtual void device_add_mconfig(machine_config &config) override;
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virtual ioport_constructor device_input_ports() const override;
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virtual const tiny_rom_entry *device_rom_region() const override;
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private:
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uint32_t m_current_rom_start;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(ISA8_LBA_ENHANCER, lba_enhancer_device)
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#endif // MAME_BUS_ISA_LBA_ENHANCER_H
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