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Diffstat (limited to 'src/mame/drivers/mzr8105.cpp')
-rw-r--r--src/mame/drivers/mzr8105.cpp363
1 files changed, 12 insertions, 351 deletions
diff --git a/src/mame/drivers/mzr8105.cpp b/src/mame/drivers/mzr8105.cpp
index 295436fbbea..129146b6e7e 100644
--- a/src/mame/drivers/mzr8105.cpp
+++ b/src/mame/drivers/mzr8105.cpp
@@ -1,378 +1,42 @@
// license:BSD-3-Clause
// copyright-holders:Joakim Larsson Edstrom
-/***************************************************************************
- *
- * Mizar VME8105 rev D 3U SBC driver, initially derived from force68k.c
- *
- * 19/08/2015
- *
- * I baught this board from http://www.retrotechnology.com without documentation.
- * It has a Motorola 68000 CPU @ 10MHz and two 27128 EPROMS with OS9 DEBUG labels
- * and not much more except 16 or so TTLs, 2 PALs and a VME P1 connector. It is a
- * 2 sided design so it shold be possible to trace the schematics quite easily.
- * There is a date on the P1 Connector: "Feb 20 1987"
- *
- * ||
- * ||
- * ||
- * ||
- * ||____________________________________________________________ ___
- * || --------------K2|U6-7432|U7-7474|U14-7405|U21-74645 | |_| |
- * || | 2764 - low |-+-------+-------+--------+-----------+ | | |
- * || | OS9 DEBUG U4| +---------+ +--------+---------+ | | |
- * || -------------- | | |U13-7474|U20-74645| | | |
- * || ______________ | | +--------+---------+ | | |
- * || | | | | ______________K4____ | | |
- * || | U3| | | |U12-7438|U19-74244| | |VME|
- * || -------------- | |+------K6---------K3---+ | | |
- * || ______________ | ||U11-PAL20L10|U18-74244| | |P1 |
- * || | 2764 - high | | |+-----021102-+---------+ | | |
- * || | OS9 DEBUG U2| |MC68000L10+------------+---------+ | | |
- * || |______________| | ||U10-PAL14L4 |U17-74244| | | |
- * || | |+-----021001-+---------+ | | |
- * || -------------- | |+----+_______|U16-74244|+--+| | |
- * || | | | |XTAL |U9-7410+---------+| || | |
- * ||K1 | U1| | |FOX100-------+---------+|K5||_| |
- * || -------------- |_________|10MHz|U8-7404|U15-74148|| || |___|
- * ||--||--------------------------------+----+-------+---------++--+
- * ||--||
- * ||
- *
- * PAL:s
- *------
- * The board has two PAL:s, a PAL20L10 and a PAL14L4.
- *
- * _____ _____
- * OD/CLK 1 |* \_/ | 20 VCC
- * CPU A13 I0 2 | | 19 O0/LR A23
- * U9 7410p12 I1 3 | | 18 O1/A0 A22
- * CPU *AS I2 4 | | 17 02/A1 U2/U4 2764p22 *OE
- * GND I3 5 | | 16 03/A2 U11 PAL20L10p6 I4
- * CPU A14 I4 6 | U10 | 15 A0/O0 U11 PAL20L10p7 I5
- * CPU A15 I5 7 | PAL14L4 | 14 A1/O1 U19 74LS244p11 I0b
- * CPU A16 I6 8 | | 13 A2/O2 A18
- * CPU A17 I7 9 | | 12 LR/O3 A20
- * GND 10 |_____________| 11 CLK/OD A21
- *
- * _____ _____
- * OD/CLK 1 |* \_/ | 24 VCC
- * I0 2 | | 23 O0/LR
- * CPU *AS I1 3 | | 22 O1/A0
- * U10 PAL14L4p3 I2 4 | | 21 02/A1
- * I3 5 | | 20 03/A2
- * U10 PAL14L4p16 I4 6 | U10 | 19 04/NC
- * U10 PAL14L4p15 I5 7 | PAL20L10 | 18 NC/O0
- * I6 8 | | 17 A2/O1
- * I7 9 | | 16 A1/O2
- * I8 10 | | 15 A0/O3
- * I9 11 | | 14 LR/O4
- * GND 12 |_____________| 13 CLK/OD
- *
- * Trace is not fully completed and validated.
- *
- * History of Mizar
- *-------------------
- * Mizar was one of the first companies that released VME boards in 1982-3 together with
- * Force Computers and Motorola. Their systems was often supported by OS9/68000 from Microware.
- * In 1993 Mizar discontinued their OS9/CPU board product range and focused entirely on DSP
- * boards. RTSI was founded by Mizar employees preserving the knowledge in OS9 as consultants.
- * In 1998 Blue Wave resulted from the merger of Mizar and Loughborough Sound Images.
- * Not much tech information availabe but I found some quotes about Mizar on the internet:
- *
- * From http://archive.org/stream/68micro-vol-11-num-02/V11N02_Feb1989_djvu.txt :
- *--------------------------------------------------------------------------------
- * " Mizar provides complete OS-9 solutions for the VMEbus. Mizar's VME CPUs
- * offer (he functions and performance your application demands. Our single
- * height (3U) VME processors are uniquely configurable computing engines,
- * Through Mizar's unique MXbus expansion interface, standard and custom side
- * modules can be added to basic processors to create double-height (6U) boards
- * tor specific applications, 3U CPU options include 68010, 66020, and 63030
- * microprocessors, up to one MB of DRAM, serial I/O, real-time clock, and
- * mailbox interrupt support. Standard MXbus side modules include additional DRAM.
- * SRAM, and I/O.
- *
- * Mizar's standard double- height (6U) processors provide additional features such
- * as a high-speed cache to enhance 68030 performance, floating, point coprocessor
- * support, up to four MB dual ported DRAM, VSB memory interface, Ethernet, and SCSI.
- *
- * Mizar also supports OS-9 with completely configured OS9 development systems and
- * OS-9 application server systems. For more information, call Mizar today
- *
- * 800-635-0200 MIZAR 1419 Dunn Drive CarrolHon, TX 75006 214-446-2664"
- *
- * Known boards from Mizar:
- *
- * MZX 414
- * MZ 7122
- * MZ 7132
- * MZ 7300 Serial I/O Board (Z8530)
- * EMX 7320 Serial I/O Board
- * MZ 7400 Disk Controller Board (WD 2010; WD 1772)
- * MZ 7500 IEEE-488 (GPIB) Interface Board
- * EMX 7550 Ethernet Controller Board (AMD 7990 Lance) MAC: 00:80:F8 MIZAR, INC.
- * MZ 7772
- * MZ 7810 I/O Expansion Module (6681 DUART)
- * MZ 7831 SCSI Expansion Module (WD 33C93A)
- * MZ 7850 Ethernet Expansion Module (WD 83C690)
- * MZ 8000 ??
- * MZ 8105 3U 68000 CPU board
- * MZ 8115
- * MZ 8300 3U serial board, 2 NEC 7201 and 1 AMD CTS9513 5 x 16 bit Counter/Timer
- * MZ 8310 timing module 2 x AM9513
- * MZ 8505 IEEE-488 (GPIB) Interface Board"
- *
- * From http://www.megalextoria.com/forum2/index.php?t=msg&goto=73945&
- *--------------------------------------------------------------------
- * Aug 20 1984 a report by James Jones from the OS/9 conferance in Des Moines:
- * "...
- * Mizar: is selling VME bus 68010 boards, running OS-9/68000; they also make
- * various memory and I/O boards, disk controller boards, and and a NEC 7220-based
- * graphics controller board...."
- *
- * Misc links about Mizar:
- * http://www.vita.com/History
- * http://www.verycomputer.com/154_e272024804bbe203_1.htm
- * https://www.aihitdata.com/company/00814595/RTSI/overview
- *
- * Address Map
- * --------------------------------------------------------------------------
- * Address Range Description/Assumption
- * --------------------------------------------------------------------------
- * 0x000000 0x01ffff ROM because of fixed vectors
- * 0x020000 0x03ffff RAM because bootvector stack starts at 0x21000
- * -- VME adresses---
- * 0xff0000 0xff0003 Bootstrap expects to find a UPD7201 serial device here
- * --------------------------------------------------------------------------
- *
- * Interrupt sources
- * ----------------------------------------------------------
- * Description Device Lvl IRQ VME board
- * /Board Vector Address
- * ----------------------------------------------------------
- * On board Sources
- * TBD
- * Off board Sources (other VME boards)
- * TBD
- * ----------------------------------------------------------
- *
- * TODO:
- * - Dump the ROMs (DONE)
- * - Setup a working address map (DONE)
- * - Add VME bus driver (Faked one)
- * - understand what other device is expected in VME space ff0011-13
- *
- ****************************************************************************/
#include "emu.h"
+#include "includes/mzr8105.h"
+#include "bus/vme/mzr8300.h"
#include "cpu/m68000/m68000.h"
-#include "bus/rs232/rs232.h"
#include "machine/clock.h"
-#include "softlist.h"
-
-// The board needs a SIO board to get a user interface so lets fake one until the VME devices is done
-#define FAKEVME 1
-
-// There are two user prom sockets
-#define CARDSLOT 0
-
-#if FAKEVME
-#include "machine/z80sio.h"
-#endif
-
-#if CARDSLOT // Awaiting info on how to boot the user eproms
-#include "bus/generic/slot.h"
-#include "bus/generic/carts.h"
-#endif
-
-#define VERBOSE 0
-
-#define LOGPRINT(x) { do { if (VERBOSE) logerror x; } while (0); }
-#define LOG(x) {} LOGPRINT(x)
-#define LOGR(x) {} LOGPRINT(x)
-#define LOGSETUP(x) {} LOGPRINT(x)
-#define LOGINT(x) {} LOGPRINT(x)
-
-#if VERBOSE >= 2
-#define logerror printf
-#endif
-
-#ifdef _MSC_VER
-#define LLFORMAT "%I64%"
-#define FUNCNAME __func__
-#else
-#define LLFORMAT "%lld"
-#define FUNCNAME __PRETTY_FUNCTION__
-#endif
-
-/* These values are borrowed just to get the terminal going and should be replaced
- * once a proper serial board hardware (ie MZ 8300) is found and emulated. */
-#define BAUDGEN_CLOCK XTAL_19_6608MHz /* fake */
-#define UPD_CLOCK (BAUDGEN_CLOCK / 128) /* This will give prompt */
-
-class mzr8105_state : public driver_device
-{
-public:
-mzr8105_state(const machine_config &mconfig, device_type type, const char *tag) :
- driver_device (mconfig, type, tag)
- ,m_maincpu (*this, "maincpu")
- ,m_updterm(*this, "upd")
-#if CARDSLOT
- ,m_cart(*this, "exp_rom1")
-#endif
-{
-}
-
- DECLARE_READ16_MEMBER (vme_a24_r);
- DECLARE_WRITE16_MEMBER (vme_a24_w);
- DECLARE_READ16_MEMBER (vme_a16_r);
- DECLARE_WRITE16_MEMBER (vme_a16_w);
- virtual void machine_start () override;
- DECLARE_WRITE_LINE_MEMBER (write_updterm_clock);
-
-#if CARDSLOT
- // User EPROM/SRAM slot(s)
- int mzr8105_load_cart(device_image_interface &image, generic_slot_device *slot);
- DECLARE_DEVICE_IMAGE_LOAD_MEMBER (exp1_load) { return mzr8105_load_cart(image, m_cart); }
- DECLARE_READ16_MEMBER (read16_rom);
-#endif
-
-protected:
-
-private:
- required_device<cpu_device> m_maincpu;
- required_device<upd7201N_device> m_updterm;
-
-#if CARDSLOT
- uint16_t *m_usrrom;
- required_device<generic_slot_device> m_cart;
-#endif
-};
static ADDRESS_MAP_START (mzr8105_mem, AS_PROGRAM, 16, mzr8105_state)
ADDRESS_MAP_UNMAP_HIGH
+/* The ROMs contains an OS9 bootloader. It is position independent but reset vector suggests that it sits flat on adress 0 (zero) */
AM_RANGE (0x000000, 0x003fff) AM_ROM AM_REGION("roms", 0x000000) /* System EPROM Area 16Kb OS9 DEBUG - not verified */
AM_RANGE (0x004000, 0x01ffff) AM_ROM AM_REGION("roms", 0x004000)/* System EPROM Area 112Kb for System ROM - not verified */
AM_RANGE (0x020000, 0x03ffff) AM_RAM /* Not verified */
-// AM_RANGE (0x0a0000, 0x0bffff) AM_ROM /* User EPROM/SRAM Area, max 128Kb mapped by a cartslot */
-// AM_RANGE(0x100000, 0xfeffff) AM_READWRITE(vme_a24_r, vme_a24_w) /* VMEbus Rev B addresses (24 bits) - not verified */
-// AM_RANGE(0xff0000, 0xffffff) AM_READWRITE(vme_a16_r, vme_a16_w) /* VMEbus Rev B addresses (16 bits) - not verified */
-#if FAKEVME
-// Faking a Mizar 8300 SIO UPD7201 BOARD in VME A16 adress space
- AM_RANGE (0xFF0000, 0xFF0001) AM_DEVREADWRITE8("upd", upd7201N_device, db_r, db_w, 0x00ff)
- AM_RANGE (0xFF0002, 0xFF0003) AM_DEVREADWRITE8("upd", upd7201N_device, cb_r, cb_w, 0x00ff)
- AM_RANGE (0xFF0004, 0xFF0005) AM_DEVREADWRITE8("upd", upd7201N_device, da_r, da_w, 0x00ff)
- AM_RANGE (0xFF0006, 0xFF0007) AM_DEVREADWRITE8("upd", upd7201N_device, ca_r, ca_w, 0x00ff)
-#endif
+// AM_RANGE (0x100000, 0xfeffff) AM_READWRITE(vme_a24_r, vme_a24_w) /* VMEbus Rev B addresses (24 bits) - not verified */
+// AM_RANGE (0xff0000, 0xffffff) AM_READWRITE(vme_a16_r, vme_a16_w) /* VMEbus Rev B addresses (16 bits) - not verified */
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START (mzr8105)
INPUT_PORTS_END
-/* Start it up */
-void mzr8105_state::machine_start ()
-{
- LOG(("%s()\n", FUNCNAME));
-
-#if CARDSLOT
- /* Map user ROM/RAM socket(s) */
- if (m_cart->exists())
- {
- m_usrrom = (uint16_t*)m_cart->get_rom_base();
- m_maincpu->space(AS_PROGRAM).install_read_handler(0xa0000, 0xbffff, read16_delegate(FUNC(generic_slot_device::read16_rom), (generic_slot_device*)m_cart));
- }
-#endif
-}
-
-/* Dummy VME access methods until the VME bus device is ready for use */
-READ16_MEMBER (mzr8105_state::vme_a24_r){
- LOG(("%s()\n", FUNCNAME));
- return (uint16_t) 0;
-}
-
-WRITE16_MEMBER (mzr8105_state::vme_a24_w){
- LOG(("%s()\n", FUNCNAME));
-}
-
-READ16_MEMBER (mzr8105_state::vme_a16_r){
- LOG(("%s()\n", FUNCNAME));
- return (uint16_t) 0;
-}
-
-WRITE16_MEMBER (mzr8105_state::vme_a16_w){
- LOG(("%s()\n", FUNCNAME));
-}
-
-#if CARDSLOT
-/*
- * The USER EPROM Area
- */
-// Implementation of static 2 x 64K EPROM in sockets U1/U3 as 16 bit wide cartridge for easier
-// software handling. TODO: make configurable according to table above.
-static MACHINE_CONFIG_FRAGMENT( mzr8105_eprom_sockets )
- MCFG_GENERIC_CARTSLOT_ADD("exp_rom1", generic_plain_slot, "mzr8105_cart")
- MCFG_GENERIC_EXTENSIONS("bin,rom")
- MCFG_GENERIC_WIDTH(GENERIC_ROM16_WIDTH)
- MCFG_GENERIC_ENDIAN(ENDIANNESS_BIG)
- MCFG_GENERIC_LOAD(mzr8105_state, exp1_load)
-// MCFG_SOFTWARE_LIST_ADD("cart_list", "mzr8105_cart")
-MACHINE_CONFIG_END
-
-/***************************
- Rom loading functions
-****************************/
-int mzr8105_state::mzr8105_load_cart(device_image_interface &image, generic_slot_device *slot)
-{
- uint32_t size = slot->common_get_size("rom");
-
- if (size > 0x20000) // Max 128Kb - not verified
- {
- LOG(("Cartridge size exceeding max size (128Kb): %d\n", size) );
- image.seterror(IMAGE_ERROR_UNSPECIFIED, "Cartridge size exceeding max size (128Kb)");
- return IMAGE_INIT_FAIL;
- }
-
- slot->rom_alloc(size, GENERIC_ROM16_WIDTH, ENDIANNESS_BIG);
- slot->common_load_rom(slot->get_rom_base(), size, "rom");
-
- return IMAGE_INIT_PASS;
-}
-#endif
-
-WRITE_LINE_MEMBER (mzr8105_state::write_updterm_clock){
- m_updterm->txcb_w (state);
- m_updterm->rxcb_w (state);
-}
+static SLOT_INTERFACE_START(mzr8105_vme_cards)
+ SLOT_INTERFACE("mzr8300", VME_MZR8300)
+SLOT_INTERFACE_END
/*
* Machine configuration
*/
-static MACHINE_CONFIG_START (mzr8105, mzr8105_state)
+MACHINE_CONFIG_START (mzr8105, mzr8105_state)
MCFG_CPU_ADD ("maincpu", M68000, XTAL_10MHz)
MCFG_CPU_PROGRAM_MAP (mzr8105_mem)
-
-/* Terminal Port config */
- MCFG_UPD7201_ADD("upd", XTAL_4MHz, 0, 0, 0, 0 )
- MCFG_Z80SIO_OUT_TXDB_CB(DEVWRITELINE("rs232trm", rs232_port_device, write_txd))
- MCFG_Z80SIO_OUT_DTRB_CB(DEVWRITELINE("rs232trm", rs232_port_device, write_dtr))
- MCFG_Z80SIO_OUT_RTSB_CB(DEVWRITELINE("rs232trm", rs232_port_device, write_rts))
-
- MCFG_RS232_PORT_ADD ("rs232trm", default_rs232_devices, "terminal")
- MCFG_RS232_RXD_HANDLER (DEVWRITELINE ("upd", upd7201N_device, rxb_w))
- MCFG_RS232_CTS_HANDLER (DEVWRITELINE ("upd", upd7201N_device, ctsb_w))
-
- MCFG_DEVICE_ADD ("updterm_clock", CLOCK, UPD_CLOCK)
- MCFG_CLOCK_SIGNAL_HANDLER (WRITELINE (mzr8105_state, write_updterm_clock))
-
-#if CARDSLOT
-// EPROM sockets
- MCFG_FRAGMENT_ADD(mzr8105_eprom_sockets)
-#endif
-
+ MCFG_VME_P1_DEVICE_ADD("vme")
+ MCFG_VME_P1_SLOT_ADD ("vme", "slot1", mzr8105_vme_cards, nullptr)
MACHINE_CONFIG_END
/* ROM definitions */
-/* UPD7201 init sequence
+/* mzr8300 UPD7201 init sequence
* :upd B Reg 02 <- 04 Interrupt vector
* :upd B Reg 06 <- 00 Sync byte
* :upd B Reg 07 <- 00 Sync byte
@@ -382,11 +46,8 @@ MACHINE_CONFIG_END
*/
ROM_START (mzr8105)
ROM_REGION (0x20000, "roms", 0)
-
-/* The ROMs contains an OS9 bootloader. It is position independent but reset vector suggests that it sits flat on adress 0 (zero) */
ROM_LOAD16_BYTE ("mzros9LB.bin", 0x000000, 0x2000, CRC (7c6a354d) SHA1 (2721eb649c8046dbcb517a36a97dc0816cd133f2))
ROM_LOAD16_BYTE ("mzros9HB.bin", 0x000001, 0x2000, CRC (d18e69a6) SHA1 (a00b68f4d649bcc09a29361f8692e52be12b3792))
-
ROM_END
/* Driver */