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Add Monkey King 3B SoC skeleton and RS-70 system (#6906)
New machines marked as NOT_WORKING ---------------------------------- RS-70 648-in-1 [David Shah] -mk3b: Added a skeleton driver for the Monkey King 3B SoC. [David Shah]
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David Shah
GitHub
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commit
edd20eaf70
@ -4016,6 +4016,7 @@ files {
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MAME_DIR .. "src/mame/drivers/actions_atj2279b.cpp",
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MAME_DIR .. "src/mame/drivers/pubint_storyreader.cpp",
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MAME_DIR .. "src/mame/drivers/magiceyes_pollux_vr3520f.cpp",
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MAME_DIR .. "src/mame/drivers/monkey_king_3b.cpp",
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}
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createMESSProjects(_target, _subtarget, "ultimachine")
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252
src/mame/drivers/monkey_king_3b.cpp
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252
src/mame/drivers/monkey_king_3b.cpp
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@ -0,0 +1,252 @@
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// license:BSD-3-Clause
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// copyright-holders:David Shah
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/*
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Monkey King SoCs (currently only 3B is supported)
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Presumably-custom ARM-based system-on-chips by Digital Media Cartridge (DMC).
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Intended to run NES and Genesis emulators, primarily for ATgames systems.
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Sometimes abbreviated MK. It is a successor of the Titan SoC used in previous
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emulation based ATgames systems.
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Monkey King and Monkey 2: Presumed custom. Used in some ATgames/Blaze
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Genesis systems and the Atari Flashback Portable.
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Monkey King 3 and Monkey King 3B: Presumed custom. Used in the ATgames
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BLAST system and the RS-70 648-in-1 "PS1 form factor" clone. Supports
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HDMI output.
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Monkey King 3.6: not a custom part but a rebranded RK3036, usually
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running a cut-down Android based OS. Used in newer ATgames systems.
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The typical configuration of the Monkey King SoCs (other than the
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3.6) is with 8/16MB of SDRAM, NOR flash for the firmware and
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built-in games, and a SD card for additional games.
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The RS-70 is notable for having a debug UART on the USB port
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(serial TX on D+, 115200). It prints the following messages on boot:
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EXEC: Executing 'boot' with 0 args (ZLib ON)...
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EXEC: Loading 'boot' at 0x18000000...
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EXEC: Loaded 372272 bytes of 2097152 available.
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This is different from the serial output that this emulation model
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currently produces. Perhaps one of the unimplemented IO is causing
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it to go into some kind of debug mode. The log output produced by
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this machine is:
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Modes:0x00000000
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PUT: Setting joystick to mode 0x0, timer to 250us
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******************************************************
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MK FIRMWARE INFORMATION
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Mode: 0xB4
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Build Time: May 8 2019 14:09:21
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CPU Clock: 240MHz
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TFS Start: 0x8070000
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Video Buf: 0x6000000
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Stack Top: 0x3001EE8
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IWRAM Size: 32kB
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EVRAM Size: 16384kB
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Heap Size: 6144kB at 0x18200000
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Video Mode: 0
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Video Size: 1280x720x16bpp
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******************************************************
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There are other strings in the ROM that imply there may be more serial
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debug possibilities.
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TODO:
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implement everything
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add dumps of more Monkey King systems
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*/
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#include "emu.h"
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#include "cpu/arm7/arm7.h"
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#include "cpu/arm7/arm7core.h"
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#include "emupal.h"
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#include "screen.h"
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class mk3b_soc_state : public driver_device
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{
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public:
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mk3b_soc_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_iram0(*this, "iram0"),
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m_iram3(*this, "iram3"),
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m_sdram(*this, "sdram"),
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m_maincpu(*this, "maincpu"),
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m_screen(*this, "screen")
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{ }
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void mk3b_soc(machine_config &config);
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void init_rs70();
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private:
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required_shared_ptr<uint32_t> m_iram0, m_iram3;
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required_shared_ptr<uint32_t> m_sdram;
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required_device<cpu_device> m_maincpu;
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required_device<screen_device> m_screen;
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virtual void machine_reset() override;
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virtual void video_start() override;
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uint32_t io4_r(offs_t offset, uint32_t mem_mask = ~0);
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void io4_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
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uint32_t io7_r(offs_t offset, uint32_t mem_mask = ~0);
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void io7_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
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uint32_t io10_r(offs_t offset, uint32_t mem_mask = ~0);
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void io10_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
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uint32_t screen_update_mk3b_soc(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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void map(address_map &map);
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std::string debug_buf;
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};
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void mk3b_soc_state::map(address_map &map)
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{
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// 64MB external NOR flash
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map(0x08000000, 0x0BFFFFFF).rom().share("norflash").region("norflash", 0x0);;
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// unknown amount and configuration of internal RAM
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map(0x00000000, 0x0000FFFF).ram().share("iram0");
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// This section of RAM seems to contain the stack
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map(0x03000000, 0x0300FFFF).ram().share("iram3");
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// 16MB of external SDRAM
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map(0x18000000, 0x18FFFFFF).ram().share("sdram");
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// IO is totally unknown for now
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map(0x04000000, 0x0400FFFF).rw(FUNC(mk3b_soc_state::io4_r), FUNC(mk3b_soc_state::io4_w));
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map(0x07000000, 0x0700FFFF).rw(FUNC(mk3b_soc_state::io7_r), FUNC(mk3b_soc_state::io7_w));
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map(0x10000000, 0x1000FFFF).rw(FUNC(mk3b_soc_state::io10_r), FUNC(mk3b_soc_state::io10_w));
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}
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static INPUT_PORTS_START( mk3b_soc )
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INPUT_PORTS_END
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void mk3b_soc_state::video_start()
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{
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}
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void mk3b_soc_state::machine_reset()
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{
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// In practice, this will probably be done by a small
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// internal boot ROM.
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m_iram0[0] = 0xe59f0000; // ldr r0, [pc]
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m_iram0[1] = 0xe12fff10; // bx, r0
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m_iram0[2] = 0x08000000; // target address
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}
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uint32_t mk3b_soc_state::screen_update_mk3b_soc(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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{
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return 0;
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}
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void mk3b_soc_state::mk3b_soc(machine_config &config)
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{
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// type unknown (should actually have VFP?)
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// debug output suggests 240MHz clock
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ARM920T(config, m_maincpu, 240000000);
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m_maincpu->set_addrmap(AS_PROGRAM, &mk3b_soc_state::map);
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SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
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m_screen->set_refresh_hz(60);
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m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500) /* not accurate */);
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m_screen->set_size(1280, 720);
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m_screen->set_visarea(0, 1280-1, 0, 720-1);
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m_screen->set_screen_update(FUNC(mk3b_soc_state::screen_update_mk3b_soc));
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}
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uint32_t mk3b_soc_state::io4_r(offs_t offset, uint32_t mem_mask)
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{
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switch (offset) {
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case 0x01:
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return (m_screen->vblank() << 27) | m_screen->vblank(); // who knows? seems to need to toggle between 0 and 1
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default:
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logerror("%s: IO 0x04 read 0x%04X\n", machine().describe_context(), offset);
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return 0x00;
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}
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}
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void mk3b_soc_state::io4_w(offs_t offset, uint32_t data, uint32_t mem_mask)
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{
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logerror("%s: IO 0x04 write 0x%04X 0x%08X & 0x%08X\n", machine().describe_context(), offset, data, mem_mask);
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}
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uint32_t mk3b_soc_state::io7_r(offs_t offset, uint32_t mem_mask)
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{
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switch (offset) {
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case 0x21: // video size
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return (1280 << 16) | (720);
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default:
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logerror("%s: IO 0x07 read 0x%04X\n", machine().describe_context(), offset);
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return 0x00;
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}
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}
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void mk3b_soc_state::io7_w(offs_t offset, uint32_t data, uint32_t mem_mask)
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{
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logerror("%s: IO 0x07 write 0x%04X 0x%08X & 0x%08X\n", machine().describe_context(), offset, data, mem_mask);
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}
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uint32_t mk3b_soc_state::io10_r(offs_t offset, uint32_t mem_mask)
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{
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switch (offset) {
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// Definitely not correct, but toggling somehow keeps things moving
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case 0x148:
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case 0x149:
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return m_screen->vblank() ? 0x00000000 : 0xFFFFFFFF;
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default:
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logerror("%s: IO 0x10 read 0x%04X\n", machine().describe_context(), offset);
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return 0x00;
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}
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}
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void mk3b_soc_state::io10_w(offs_t offset, uint32_t data, uint32_t mem_mask)
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{
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switch (offset) {
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case 0x148: { // debug UART
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char c = data & 0xFF;
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logerror("%s: UART W: %c\n", machine().describe_context(), c);
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if (c == '\n') {
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logerror("%s: [DEBUG] %s\n", machine().describe_context(), debug_buf.c_str());
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debug_buf.clear();
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} else if (c != '\r') {
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debug_buf += c;
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}
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break;
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}
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default:
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logerror("%s: IO 0x10 write 0x%04X 0x%08X & 0x%08X\n", machine().describe_context(), offset, data, mem_mask);
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}
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}
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void mk3b_soc_state::init_rs70()
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{
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// Uppermost address bit seems to be inverted
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uint8_t *ROM = memregion("norflash")->base();
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int size = memregion("norflash")->bytes();
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for (int i = 0; i < (size / 2); i++) {
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std::swap(ROM[i], ROM[i + (size / 2)]);
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}
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// FIXME: Work around missing FPU for now
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ROM[0x32f24] = 0x00;
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ROM[0x32f25] = 0x00;
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ROM[0x32f26] = 0x00;
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ROM[0x32f27] = 0x00;
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}
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ROM_START( rs70_648 )
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ROM_REGION(0x04000000, "norflash", 0)
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ROM_LOAD("s29gl512p.bin", 0x000000, 0x04000000, CRC(cb452bd7) SHA1(0b19a13a3d0b829725c10d64d7ff852ff5202ed0) )
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ROM_END
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CONS( 2019, rs70_648, 0, 0, mk3b_soc, mk3b_soc, mk3b_soc_state, init_rs70, "<unknown>", "RS-70 648-in-1", MACHINE_IS_SKELETON )
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@ -23148,6 +23148,9 @@ momokoe // (c) 1986 Jaleco (English text)
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monacogp // (c) 1980 Sega
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monacogpa // (c) 1980 Sega
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@source:monkey_king_3b.cpp
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rs70_648 //
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@source:monon_color.cpp
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mononcol // (c) 2011 M&D
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@ -587,6 +587,7 @@ mmd2.cpp
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mod8.cpp
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modellot.cpp
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molecular.cpp
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monkey_king_3b.cpp
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monon_color.cpp
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monty.cpp
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mpc3000.cpp
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