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+// license:BSD-3-Clause
+// copyright-holders:Joakim Larsson Edstrom
+/***************************************************************************
+ *
+ * Motorola MVME-350 6U Intelligent Tape Controller driver, initially derived
+ * from hk68v10.c
+ *
+ * 31/08/2015
+ *
+ * I baught this board from http://www.retrotechnology.com without documentation.
+ * It has a Motorola 68010 CPU @ 10MHz, 128 Mb RAM and two 2764 EPROMS with
+ * QIC-02 tape controller firmware. The board also populates a 68230 PIT and loads
+ * of descrete TTL components.
+ *
+ *
+ * ||
+ * || ||
+ * ||||--||
+ * ||||--||
+ * || ||__________________________________________________________ ___
+ * ||_______________________________________________________ |_| |
+ * || |74F74 | xxxxx | xxxxx | 74LS245 | 74ALS645| | | |
+ * || |______|________|_________|___________| ________| | | |
+ * || |74F74 | xxxxx | xxxxx | 74LS245 | 74ALS645| | | |
+ * || |______|________|_________|___________| ________| | | |
+ * || |74LS02| 74LS08||Am25LS251| 74S38 |74LS20|Jumpers | | |
+ * || |______|_______||_________|_______|______|______| | |VME|
+ * || |74F04 | 74LS32||74LS374 | 74LS374 |74S244 | | | |
+ * ||+---+ |______|_______||_________|___________|_________| | |P1 |
+ * |||CON| |74F04 | 74LS85||74S244 | 74S240 |PAL | | | |
+ * ||| | |______|_______||_________|___________|_________| | | |
+ * ||| | |74LS04| | |74S244 | | | |
+ * ||| | |______| | PIT |_________| | | |
+ * ||| | |74LS125 | MC68230L10 |74LS145 | | | |
+ * ||| | |______| __|_______________________|---------| | | |
+ * ||| | |74LS74| |25LS251 | | RAM |74S244 | |_| |
+ * ||+---+ ---------- |---------- | HM6264P-12 |---------| |___|
+ * || | PAL | | 74245 | |______________|74S244 | |
+ * || +--------- |_________| | U40 27128 |---------| |
+ * || | 74F32 | | || System ROM |74LS682 | |
+ * Red || +-------- | CPU || |-+-------| |
+ * FAIL ||LED | 74F138| | MC68010 |+--------------+ |DIPSW__| |
+ * Red || +-------- | || RAM | |74S38 | |
+ * HALT ||LED | 74F32 | |__________|| HM6264P-12 | |______ | |
+ * Green || +-------+ |74245 |+--------------+ |74F08 | |
+ * RUN ||LED |XTAL | |__________|| U47 27128 | |______ | |___
+ * ||+---+|20MHz | |74244 || System ROM | |74F00 | _| |
+ * |||CON|--------+___|__________|+--------------+_|_______| | | |
+ * ||| |74LS08 |74F74 |74LS148| |PAL | | PAL | | | |
+ * ||| |________|________|_______| |________|_|_________| | | |
+ * ||| | 74LS138|74F32 | PAL | |74F74 |Am29823 | | | |
+ * ||| |________|________|_______| |________|-+---------| | |VME|
+ * ||| | 74LS11 |74F04 |74LS374| |74LS374 | |74S240 | | | |
+ * ||| |________|________|_______| |________|_|---------| | |P2 |
+ * ||| | 74F138 |BLANK |74LS374| |74LS374 |74S240 | | | |
+ * ||| |________|________|_______| +----------+---------| | | |
+ * ||| | 74LS08 |74F32 |74LS11|74LS393|74LS393|resistors | | |
+ * ||| |________|________|______|______ |_______|________| | | |
+ * ||| |DM2585 |74F74 |DM2230| 74LS00| 74F02 |74F32 | | | |
+ * ||+---+--------+--------+------+-------+---------+------| | | |
+ * || |74LS74 |74F20 |74S260| 74S74 | 74F08 |74LS02| | | |
+ * || +------------------------------------------+------| | | |
+ * || |DM2353 |74F10 |74F32 | 74LS32| 74F08 |DM2353| |_| |
+ * || +------------------------------------------+------+-+ |___|
+ * || ||------------------------------------------------------------+-+
+ * ||||--||
+ * ||||--||
+ * ||
+ *
+ * History of Motorola VME division (https://en.wikipedia.org/wiki/VMEbus)
+ *---------------------------------
+ * When Motorola released the 68000 processor 1979 the ambition of the deisgners
+ * was also to standardize a versatile CPU bus to be able to build computer
+ * systems without constructing PCB:s from scratch. This become VersaBus but the
+ * boards was really too big and the computer world already saw the systems shrink
+ * in size. Motorola's design center in Munich proposed to use the smaller and
+ * already used Euroboard form factor and call it Versabus-E. This later became
+ * VME which was standardized in the VITA organization 1981
+ *
+ * Misc links about Motorola VME division and this board:
+ * http://bitsavers.trailing-edge.com/pdf/motorola/_dataBooks/1987_Microcomputer_Systems_and_Components.pdf
+ *
+ * Description
+ * ------------
+ * Streaming Tape Controller released 1984 with the following feature set
+ *
+ * - Double High (6U) VMEmodule
+ * - QIC-02 Streaming Tape Interface
+ * - Supports One 01C-02 compatible 1/4-inch Streaming Tape Drive
+ * - Standard VMEbus Interface
+ * - Supports 24- or 32-bit DMA Addressing/16-bit Data
+ * - Generates Seven Levels of VMEbus Interrupts with Programmable Interrupt Vector
+ * - 10 MHz MC68010 Microprocessor
+ * - 90Kb/s Continuous Transfer Rate for QIC-02 Interface, 200Kb/s Burst rate
+ * - Controls Tape Cartridges Offering 20Mb, 45Mb and 60Mb of Formatted Data Storage
+ * - MC68230 PIT-based Timer
+ * - 16Kb of Static RAM Provides Buffer Storage and CPU Workspace
+ * - Multitasking Kernel-based Firmware Package
+ * - Buffered Pipe Communication Protocol Allows Multiple Hosts to Oueue Commands Without Interlock
+ * - High Level Command/Status Packets offer efficient Operating System Support
+ * - Permits Chaining of Host Command
+ *
+ * Address Map
+ * --------------------------------------------------------------------------
+ * Local to VME Decscription
+ * --------------------------------------------------------------------------
+ * 0x000000 Up to 128Kb System ROM with RESET vector
+ * 0x020000 RAM with vectors
+ * 0x020500 RAM Top of stack
+ * 0x040000 PIT device?
+ * 0x060000 RAM?
+ * 0x080000 PIT device?
+ * --------------------------------------------------------------------------
+ *
+ * Interrupt sources MVME
+ * ----------------------------------------------------------
+ * Description Device Lvl IRQ VME board
+ * /Board Vector Address
+ * ----------------------------------------------------------
+ * On board Sources
+ *
+ * Off board Sources (other VME boards)
+ *
+ * ----------------------------------------------------------
+ *
+ * DMAC Channel Assignments
+ * ----------------------------------------------------------
+ * Channel M10 V10
+ * ----------------------------------------------------------
+ *
+ *
+ * TODO:
+ * - Dump the ROMs (DONE)
+ * - Setup a working address map (STARTED)
+ * - Get documentation for VME interface
+ * - Add VME bus driver
+ * - Hook up a CPU board that supports boot from tape (ie MVME-162, MVME 147)
+ * - Get a tape file with a bootable data on it.
+ *
+ ****************************************************************************/
+
+#include "emu.h"
+#include "cpu/m68000/m68000.h"
+#include "machine/68230pit.h"
+
+#define LOG(x) x
+
+class mvme350_state : public driver_device
+{
+public:
+mvme350_state(const machine_config &mconfig, device_type type, const char *tag) :
+ driver_device (mconfig, type, tag),
+ m_maincpu (*this, "maincpu"),
+ m_pit(*this, "pit")
+{
+}
+
+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 ();
+virtual void machine_reset ();
+protected:
+
+private:
+ required_device<cpu_device> m_maincpu;
+ required_device<pit68230_device> m_pit;
+
+};
+
+static ADDRESS_MAP_START (mvme350_mem, AS_PROGRAM, 16, mvme350_state)
+ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE (0x000000, 0x01ffff) AM_ROM /* 128 Mb ROM */
+ AM_RANGE (0x020000, 0x03ffff) AM_RAM /* 128 Mb RAM */
+#if 1
+ AM_RANGE(0x040000, 0x040035) AM_DEVREADWRITE8("pit", pit68230_device, read, write, 0x00ff) /* PIT ?*/
+ AM_RANGE(0x060000, 0x06001f) AM_RAM /* Area is cleared on start */
+ AM_RANGE(0x080000, 0x080035) AM_DEVREADWRITE8("pit", pit68230_device, read, write, 0x00ff) /* PIT ?*/
+#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 (mvme350)
+INPUT_PORTS_END
+
+/* Start it up */
+void mvme350_state::machine_start ()
+{
+ LOG (logerror ("machine_start\n"));
+}
+
+void mvme350_state::machine_reset ()
+{
+ LOG (logerror ("machine_reset\n"));
+}
+
+#if 0
+/* Dummy VME access methods until the VME bus device is ready for use */
+READ16_MEMBER (mvme350_state::vme_a24_r){
+ LOG (logerror ("vme_a24_r\n"));
+ return (uint16_t) 0;
+}
+
+WRITE16_MEMBER (mvme350_state::vme_a24_w){
+ LOG (logerror ("vme_a24_w\n"));
+}
+
+READ16_MEMBER (mvme350_state::vme_a16_r){
+ LOG (logerror ("vme_16_r\n"));
+ return (uint16_t) 0;
+}
+
+WRITE16_MEMBER (mvme350_state::vme_a16_w){
+ LOG (logerror ("vme_a16_w\n"));
+}
+#endif
+
+/*
+ * Machine configuration
+ */
+static MACHINE_CONFIG_START (mvme350, mvme350_state)
+ /* basic machine hardware */
+ MCFG_CPU_ADD ("maincpu", M68010, XTAL_10MHz)
+ MCFG_CPU_PROGRAM_MAP (mvme350_mem)
+ /* PIT Parallel Interface and Timer device, assuming strapped for on board clock */
+ MCFG_DEVICE_ADD("pit", PIT68230, XTAL_16MHz / 2)
+
+MACHINE_CONFIG_END
+
+/* ROM definitions */
+ROM_START (mvme350)
+ROM_REGION (0x1000000, "maincpu", 0)
+
+ROM_LOAD16_BYTE ("mvme350U40v2.3.bin", 0x0000, 0x4000, CRC (bcef82ef) SHA1 (e6fdf26e4714cbaeb3e97d7b5acf02d64d8ad744))
+ROM_LOAD16_BYTE ("mvme350U47v2.3.bin", 0x0001, 0x4000, CRC (582ce095) SHA1 (d0929dbfeb0cfda63df6b5bc29ee27fbf665def7))
+
+/*
+ * System ROM information
+ *
+ * The ROMs known commands from different sources:
+ *
+ * It communicates with the master through data buffers in shared memory and VME bus interrupts
+ * as desribed in
+ * http://bitsavers.trailing-edge.com/pdf/motorola/_dataBooks/1987_Microcomputer_Systems_and_Components.pdf
+ *
+ * The board is pretty boring as stand alone, it initializes everything and then executes a STOP instruction
+ * awaiting a CPU on the VME bus to request its services. However, it enables boot from tape devices, we just
+ * need a MVME-131 and a dump of a VersaDOS or Motorola UNIX System V system tape and some work.
+ */
+ROM_END
+
+/* Driver */
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP (1984, mvme350, 0, 0, mvme350, mvme350, driver_device, 0, "Motorola", "MVME-350", MACHINE_NO_SOUND_HW | MACHINE_TYPE_COMPUTER )