// 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 () override; virtual void machine_reset () override; protected: private: required_device m_maincpu; required_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) 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) 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 )