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+// license:BSD-3-Clause
+// copyright-holders:Darkstar
+/**********************************************************************
+ *
+ * Adaptec AHA-1542{C,CF,CP} SCSI Controller
+ *
+ **********************************************************************/
+
+/*
+Hardware info by Guru
+
+Adaptec 1993
+
+PCB Layout
+----------
+
+Adaptec AHA-1542CF/1542CF
+FCC ID: FGT1542CF
+FAB 545107-00 REV C
+ASSY 545106-00
+
+|-------|---------------|---|-------------------|--|
+| J1 | FLOPPY34 | | SCSI50 | |
+| |---------------| |-------------------| |
+| S1 DS1 |
+| |
+| |------| DS2107AS DS2107AS |--|
+| |PC8477| 24MHz Z84C0010 | |
+| PAL |BV-1 | |S |
+| | | |----------| | |
+| |------| | | |C |
+| 93C46.U11 20MHz | | | |
+| UM6264 MCODE.U15 |ADAPTEC | |S |
+| |AIC-7970Q | | |
+| BIOS.U16 | | |I |
+| | | | |
+| |----------| |--|
+| |
+|-| |--| |----|
+ |--------------| |-------------------------|
+
+Notes:
+ J1 - 4-position header for drive activity external LED connection
+ S1 - 8-position DIP Switch (See Table A)
+ PC8477BV-1 - National Semiconductor PC8477BV-1 'SuperFDC' Advanced Floppy Disk Controller (PLCC68)
+ This is software compatible with NEC uPD765 and pin compatible with Intel 82077AA
+ Labelled "AHA-1542CF/552800-01 F/9513"
+ Clock input 24.000MHz
+ SCSI - 50-pin Centronics style external SCSI connector (DDK 57AE-40500-21D)
+ Z84C0010 - Zilog Z84C0010VEC Z80 CPU. Clock input 20/2 [10.000MHz] sourced from AIC-7970Q (PLCC44)
+ 93C46.U11 - Atmel 93C46 128b x8-bit / 64b x16-bit (1kB) EEPROM labelled '545120A' (SOIC8)
+ 6264 - Unicorn Microelectronics UM6264BM-10L 8k x8-bit Static RAM (SOJ28)
+ MCODE.U15 - ST Microelectronics M27C256B 32k x8-bit EPROM labelled 'ADAPTEC INC 553801-00 E MCODE 4B81' (DIP28)
+ BIOS.U16 - ST Microelectronics M27C256B 32k x8-bit EPROM labelled 'ADAPTEC INC 553601-00 E BIOS 7600' (DIP28)
+ BIOS 0x7600h is revision 2.10
+ PAL - AMD PALCE16V8H-15JC/4 PAL (SOJ20)
+ AIC-7970Q - Adaptec AIC-7970Q Fast SCSI Controller IC. Clock input 20.000MHz (QFP144)
+ DS2107AS - Dallas DS2107AS SCSI Active Terminator (SOIC16)
+ DS1 - Internal Drive Activity LED
+ SCSI50 - 50-pin Right Angled Flat Cable Connector With Support For Up To 7 SCSI Drives
+ FLOPPY34 - 34-pin Right Angled Flat Cable Connector With Support For Up To 2 Floppy Drives (360kb,720kb,1.2MB,1.44MB)
+
+
+Table A - S1 DIP Switch Description
+-----------------------------------
+
+Default: All DIP Switches OFF (i.e. Settings changed via BIOS and saved in EEPROM)
+Software Defaults = *
+----------------------+-----+-----+-----+-----+-----+-----+-----+-----+
+ | SW1 | SW2 | SW3 | SW4 | SW5 | SW6 | SW7 | SW8 |
+----------------------|-----+-----+-----+-----+-----+-----+-----+-----+
+Termination Enabled | ON | | | | | | | |
+ Set In BIOS*| OFF | | | | | | | |
+----------------------+-----+-----+-----+-----+ | | | |
+I/O Port 330H*| | OFF | OFF | OFF | | | | |
+ 334H | | ON | OFF | OFF | | | | |
+ 230H | | OFF | ON | OFF | | | | |
+ 234H | | ON | ON | OFF | | | | |
+ 130H | | OFF | OFF | ON | | | | |
+ 134H | | ON | OFF | ON | | | | |
+ Reserved | | OFF | ON | ON | | | | |
+ Reserved | | ON | ON | ON | | | | |
+----------------------+-----+-----+-----+-----+-----+ | | |
+Enable Floppy Yes*| | OFF | | | |
+ No | | ON | | | |
+----------------------+-----------------------+-----+-----+-----+-----+
+BIOS Address DC000H*| | OFF | OFF | OFF |
+ D8000H | | ON | OFF | OFF |
+ D4000H | | OFF | ON | OFF |
+ D0000H | | ON | ON | OFF |
+ CC000H | | OFF | OFF | ON |
+ C8000H | | ON | OFF | ON |
+ Reserved | | OFF | ON | ON |
+ BIOS Disabled | | ON | ON | ON |
+----------------------+-----------------------------+-----+-----+-----+
+
+Documentation:
+Adaptec AHA-1540CF/1542CF Installation Guide
+http://download.adaptec.com/pdfs/installation_guides/aha1540cf_ig.pdf
+ */
+
+#include "emu.h"
+#include "aha1542c.h"
+#include "cpu/z80/z80.h"
+
+// I/O Port interface
+// READ Port x+0: STATUS
+// WRITE Port x+0: CONTROL
+//
+// READ Port x+1: DATA
+// WRITE Port x+1: COMMAND
+//
+// READ Port x+2: INTERRUPT STATUS
+// WRITE Port x+2: (undefined?)
+//
+// R/W Port x+3: (undefined)
+
+// READ STATUS flags
+#define STAT_STST 0x80 // self-test in progress
+#define STAT_DIAGF 0x40 // internal diagnostic failure
+#define STAT_INIT 0x20 // mailbox initialization required
+#define STAT_IDLE 0x10 // HBA is idle
+#define STAT_CDFULL 0x08 // Command/Data output port is full
+#define STAT_DFULL 0x04 // Data input port is full
+#define STAT_INVCMD 0x01 // Invalid command
+
+// READ INTERRUPT STATUS flags
+#define INTR_ANY 0x80 // any interrupt
+#define INTR_SRCD 0x08 // SCSI reset detected
+#define INTR_HACC 0x04 // HA command complete
+#define INTR_MBOA 0x02 // MBO empty
+#define INTR_MBIF 0x01 // MBI full
+
+// WRITE CONTROL commands
+#define CTRL_HRST 0x80 // Hard reset
+#define CTRL_SRST 0x40 // Soft reset
+#define CTRL_IRST 0x20 // interrupt reset
+#define CTRL_SCRST 0x10 // SCSI bus reset
+
+// READ/WRITE DATA commands
+#define CMD_NOP 0x00 // No operation
+#define CMD_MBINIT 0x01 // mailbox initialization
+#define CMD_START_SCSI 0x02 // Start SCSI command
+#define CMD_BIOSCMD 0x03 // undocumented BIOS conmmand (shadow RAM etc.)
+#define CMD_INQUIRY 0x04 // Adapter inquiry
+#define CMD_EMBOI 0x05 // enable Mailbox Out Interrupt
+#define CMD_SELTIMEOUT 0x06 // Set SEL timeout
+#define CMD_BUSON_TIME 0x07 // set bus-On time
+#define CMD_BUSOFF_TIME 0x08 // set bus-off time
+#define CMD_DMASPEED 0x09 // set ISA DMA speed
+#define CMD_RETDEVS 0x0a // return installed devices
+#define CMD_RETCONF 0x0b // return configuration data
+#define CMD_TARGET 0x0c // set HBA to target mode
+#define CMD_RETSETUP 0x0d // return setup data
+#define CMD_ECHO 0x1f // ECHO command data (NetBSD says it is 0x1e)
+
+// these are for 1541C only:
+#define CMD_RETDEVSHI 0x23 // return devices 8-15 (from NetBSD)
+#define CMD_EXTBIOS 0x28 // return extended BIOS information
+#define CMD_MBENABLE 0x29 // set mailbox interface enable
+
+DEFINE_DEVICE_TYPE(AHA1542C, aha1542c_device, "aha1542c", "AHA-1542C SCSI Controller")
+DEFINE_DEVICE_TYPE(AHA1542CF, aha1542cf_device, "aha1542cf", "AHA-1542CF SCSI Controller")
+DEFINE_DEVICE_TYPE(AHA1542CP, aha1542cp_device, "aha1542cp", "AHA-1542CP SCSI Controller")
+
+#define Z84C0010_TAG "z84c0010"
+
+READ8_MEMBER( aha1542c_device::aha1542_r )
+{
+ logerror("%s aha1542_r(): offset=%d\n", machine().describe_context(), offset);
+ return 0xff;
+}
+
+WRITE8_MEMBER( aha1542c_device::aha1542_w )
+{
+ logerror("%s aha1542_w(): offset=%d data=0x%02x\n", machine().describe_context(), offset, data);
+}
+
+
+ROM_START( aha1542c )
+ ROM_REGION( 0x8000, "aha1542", 0 )
+ ROM_SYSTEM_BIOS( 0, "v101", "AHA-1540C/1542C BIOS v1.01" )
+ ROMX_LOAD( "adaptec_inc_534201-00_d_bios_144c_1993.u15", 0x0000, 0x8000, CRC(35178004) SHA1(2b38f2e40cd02a1b32966ead7b202b0fca130cb8), ROM_BIOS(0) )
+ ROM_SYSTEM_BIOS( 1, "v102", "AHA-1540C/1542C BIOS v1.02" )
+ ROMX_LOAD( "b_91c5.bin", 0x0000, 0x8000, CRC(076ac252) SHA1(d640b980e85d07029d8ce11a52fa26ba0f93c5de), ROM_BIOS(1) )
+
+ ROM_REGION( 0x8000, Z84C0010_TAG, 0 )
+ ROMX_LOAD( "adaptec_inc_534001-00_d_mcode_a3c2_1993.u5", 0x0000, 0x8000, CRC(220dd5a2) SHA1(4fc51c9dd63b45a50edcd56baa706d61decbef38), ROM_BIOS(0) )
+ ROMX_LOAD( "m_866a.bin", 0x0000, 0x8000, CRC(ef09053a) SHA1(ae7900653357d5f32a2734bc13d9ec63bd805597), ROM_BIOS(1) )
+ROM_END
+
+ROM_START( aha1542cf )
+ ROM_REGION( 0x8000, "aha1542", 0 )
+ ROM_SYSTEM_BIOS( 0, "v201", "Adaptec 1540CF/1542CF BIOS v2.01" )
+ ROMX_LOAD( "adaptec_inc_553601-00_c_bios_c38d_1993.u16", 0x0000, 0x8000, CRC(ab22fc02) SHA1(f9f783e0272fc14ba3de32316997f1f6cadc67d0), ROM_BIOS(0) )
+ ROM_SYSTEM_BIOS( 1, "v210", "Adaptec 1540CF/1542CF BIOS v2.10" )
+ ROMX_LOAD( "adaptec_inc_553601-00_e_bios_7600_1994.u16", 0x0000, 0x8000, CRC(8f3a2692) SHA1(b9dbd49baeec55098195131d0ed1a9bfe8463640), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS( 2, "v211", "Adaptec 1540CF/1542CF BIOS v2.11" )
+ ROMX_LOAD( "adaptec_inc_553601-00_g_bios_b402_1995.u16", 0x0000, 0x8000, CRC(fddd0b83) SHA1(aabd227cb338d8812e0bb5c17c08ea06c5aedd36), ROM_BIOS(2) )
+
+ ROM_REGION( 0x8000, Z84C0010_TAG, 0 )
+ ROMX_LOAD( "adaptec_inc_553801-00_c_mcode_563d_1993.u15", 0x0000, 0x8000, CRC(7824397e) SHA1(35bc2c8fab31aad3190a478f2dc8f3a72958cf04), ROM_BIOS(0) )
+ ROMX_LOAD( "adaptec_inc_553801-00_e_mcode_4b81_1994.u15", 0x0000, 0x8000, CRC(dd651476) SHA1(cda508281302be53ebdcf8daa61754c89ad12111), ROM_BIOS(1) )
+ ROMX_LOAD( "adaptec_inc_553801-00_g_mcode_2cde_1995.u15", 0x0000, 0x8000, CRC(896873cd) SHA1(6edbdd9b0b15ef31ca0741cac31556d2d5266b6e), ROM_BIOS(2) )
+ROM_END
+
+ROM_START( aha1542cp )
+ ROM_REGION( 0x8000, "aha1542", 0 )
+ ROM_LOAD( "adaptec_inc_908501-00_d_bios_a91e_1995.u7", 0x0000, 0x8000, CRC(0646c35e) SHA1(3a7c2731abd8295438cfa1f2a525be53e9512b1a) )
+
+ ROM_REGION( 0x8000, Z84C0010_TAG, 0 )
+ ROM_LOAD( "908301-00_f_mcode_17c9.u12", 0x0000, 0x8000, CRC(04494022) SHA1(431dfc26312556ddd24fccc429b2b3e93bac5c2f) )
+ROM_END
+
+
+u8 aha1542c_device::local_status_r()
+{
+ return m_eeprom->do_read() << 7;
+}
+
+void aha1542c_device::local_latch_w(u8 data)
+{
+ m_eeprom->cs_write(BIT(data, 2));
+ m_eeprom->clk_write(BIT(data, 1));
+ m_eeprom->di_write(BIT(data, 0));
+ // TODO: several other bits are used
+}
+
+void aha1542c_device::z84c0010_mem(address_map &map)
+{
+ map(0x0000, 0x7fff).rom().region(Z84C0010_TAG, 0);
+ map(0x8000, 0x9fff).ram(); // 2kb RAM chip
+ map(0xa000, 0xa000).r(FUNC(aha1542c_device::local_status_r));
+ map(0xb000, 0xb000).w(FUNC(aha1542c_device::local_latch_w));
+ map(0xe000, 0xe0ff).ram(); // probably PC<->Z80 communication area
+ map(0xe003, 0xe003).lr8("e003_r", []() { return 0x20; });
+}
+
+u8 aha1542cp_device::eeprom_r()
+{
+ return m_eeprom->do_read();
+}
+
+void aha1542cp_device::eeprom_w(u8 data)
+{
+ m_eeprom->cs_write(BIT(data, 2));
+ m_eeprom->clk_write(BIT(data, 1));
+ m_eeprom->di_write(BIT(data, 0));
+}
+
+void aha1542cp_device::local_mem(address_map &map)
+{
+ map(0x0000, 0x7fff).rom().region(Z84C0010_TAG, 0);
+ map(0x8000, 0x9fff).ram();
+ map(0xc001, 0xc001).rw(FUNC(aha1542cp_device::eeprom_r), FUNC(aha1542cp_device::eeprom_w));
+ map(0xe003, 0xe003).nopr();
+}
+
+const tiny_rom_entry *aha1542c_device::device_rom_region() const
+{
+ return ROM_NAME( aha1542c );
+}
+
+const tiny_rom_entry *aha1542cf_device::device_rom_region() const
+{
+ return ROM_NAME( aha1542cf );
+}
+
+const tiny_rom_entry *aha1542cp_device::device_rom_region() const
+{
+ return ROM_NAME( aha1542cp );
+}
+
+void aha1542c_device::device_add_mconfig(machine_config &config)
+{
+ z80_device &cpu(Z80(config, Z84C0010_TAG, 10'000'000));
+ cpu.set_addrmap(AS_PROGRAM, &aha1542c_device::z84c0010_mem);
+
+ EEPROM_93C46_16BIT(config, m_eeprom);
+}
+
+void aha1542cp_device::device_add_mconfig(machine_config &config)
+{
+ z80_device &cpu(Z80(config, Z84C0010_TAG, 10'000'000));
+ cpu.set_addrmap(AS_PROGRAM, &aha1542cp_device::local_mem);
+
+ EEPROM_93C46_16BIT(config, m_eeprom);
+}
+
+aha1542c_device::aha1542c_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, type, tag, owner, clock)
+ , device_isa16_card_interface(mconfig, *this)
+ , m_eeprom(*this, "eeprom")
+{
+}
+
+aha1542c_device::aha1542c_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : aha1542c_device(mconfig, AHA1542C, tag, owner, clock)
+{
+}
+
+aha1542cf_device::aha1542cf_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : aha1542c_device(mconfig, AHA1542CF, tag, owner, clock)
+{
+}
+
+aha1542cp_device::aha1542cp_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : aha1542c_device(mconfig, AHA1542CP, tag, owner, clock)
+{
+}
+
+void aha1542c_device::device_start()
+{
+ set_isa_device();
+ m_isa->install_rom(this, 0xdc000, 0xdffff, "aha1542", "aha1542");
+ m_isa->install_device(0x330, 0x333, read8_delegate(FUNC( aha1542cf_device::aha1542_r ), this),
+ write8_delegate(FUNC( aha1542cf_device::aha1542_w ), this) );
+}
+
+
+void aha1542c_device::device_reset()
+{
+}