/********************************************************************** * * Adaptec AHA-1542{,C,CF} SCSI Controller * * Copyright MESS Team. * Visit http://mamedev.org for licensing and usage restrictions. * **********************************************************************/ /* PCB layout ---------- Floppy SCSI +-----------+ +------------------+ +- +-----+-----------+-+------------------+--+ | | | DIPSW DS1 |\ | +-----+ | | | | | Y1 +---+ TRM TRM | | | | U3 | |U5 | |S| | U8 +-----+ +---+ |C| | +---+ +------+ +-------+ |S| | |U13| |U15 | Y2 | | |I| | +---+ +------+ | | | | | |U16 | |U17 | | | | +------+ +-------+ |/ +-----------------------------------------+ ||||||||| ||||||||||||||||||||||||| | DIPSW sw1 - sw8 U3 Intel chip labelled "AHA-1542CF/552800-01 D/9346", probably FDC (82077) U5 Z84C0010VEC U8 EEPROM(?) labelled 545120A U13 CXK5864CM-10LL (64kbit SRAM) U15 M27C256B labelled "ADAPTEC INC/553801-00 C/MCODE 563D/(C) 1993" U16 M27C256B labelled "ADAPTEC INC/553601-00 C/BIOS C38D/(C) 1993" U17 AIC-7970Q Y1 XTAL SRX4054 93-38 Y2 XTAL SRX4053 93-40 TRM Dallas DS2107AS (SCSI termination) DS1 LED */ /* * The PCB has a couple of DIP switches: * * sw1 on enable termination * off software-controlled termination * * sw2 sw3 sw4 I/O Port * off off off 0x330 - 0x333 (default) * on off off 0x334 - 0x337 * off on off 0x230 - 0x233 * on on off 0x234 - 0x237 * off off on 0x130 - 0x133 * on off on 0x134 - 0x137 * off on on reserved * on on on reserved * * sw5 on disable floppy interface * off enable floppy interface * * sw6 sw7 sw8 BIOS base address * off off off 0xdc000 (default) * on off off 0xd8000 * off on off 0xd4000 * on on off 0xd0000 * off off on 0xcc000 * on off on 0xc8000 * off on on reserved * on on on BIOS disabled * * source: http://download.adaptec.com/pdfs/installation_guides/1540cfig.pdf */ #include "isa_aha1542.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 const device_type AHA1542 = &device_creator; #define Z84C0010_TAG "u5" READ8_MEMBER( aha1542_device::aha1542_r ) { printf("aha1542_r(): pc=0x%08x offset=%d\n", (unsigned) machine().firstcpu->pc(), offset); return 0xff; } WRITE8_MEMBER( aha1542_device::aha1542_w ) { printf("aha1542_w(): pc=0x%08x offset=%d data=0x%02x\n", (unsigned) machine().firstcpu->pc(), offset, data); } //------------------------------------------------- // ROM( aha1542 ) //------------------------------------------------- ROM_START( aha1542 ) ROM_REGION( 0x8000, "aha1542", 0 ) ROM_LOAD( "553601-00.u16", 0x0000, 0x8000, CRC(AB22FC02) SHA1(f9f783e0272fc14ba3de32316997f1f6cadc67d0) ) /* Adaptec 1540CF/1542CF BIOS v2.01 */ ROM_REGION( 0x8000, Z84C0010_TAG, 0 ) ROM_LOAD( "553801-00.u15", 0x0000, 0x8000, CRC(7824397E) SHA1(35bc2c8fab31aad3190a478f2dc8f3a72958cf04) ) /* ADAPTEC, INC MCODE */ ROM_END static ADDRESS_MAP_START( z84c0010_mem, AS_PROGRAM, 8, aha1542_device ) AM_RANGE(0x0000, 0x7fff) AM_ROM AM_REGION(Z84C0010_TAG, 0) AM_RANGE(0x8000, 0x800f) AM_NOP // something is mapped there AM_RANGE(0x9000, 0xafff) AM_RAM // 2kb RAM chip AM_RANGE(0xe000, 0xe0ff) AM_RAM // probably PC<->Z80 communication area AM_RANGE(0xb000, 0xb000) AM_NOP // something? ADDRESS_MAP_END static MACHINE_CONFIG_FRAGMENT( aha1542 ) MCFG_CPU_ADD(Z84C0010_TAG, Z80, XTAL_12MHz) MCFG_CPU_PROGRAM_MAP( z84c0010_mem ) MACHINE_CONFIG_END const rom_entry *aha1542_device::device_rom_region() const { return ROM_NAME( aha1542 ); } machine_config_constructor aha1542_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( aha1542 ); } aha1542_device::aha1542_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, AHA1542, "AHA1542 SCSI Controller", tag, owner, clock), device_isa16_card_interface(mconfig, *this) { } void aha1542_device::device_config_complete() { m_shortname = "aha1542"; } void aha1542_device::device_start() { set_isa_device(); m_isa->install_rom(this, 0xdc000, 0xdffff, 0, 0, "aha1542", "aha1542"); m_isa->install_device(0x330, 0x333, 0, 0, read8_delegate(FUNC( aha1542_device::aha1542_r ), this), write8_delegate(FUNC( aha1542_device::aha1542_w ), this) ); } void aha1542_device::device_reset() { }