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-rw-r--r--src/devices/bus/rc2014/romram.cpp226
1 files changed, 226 insertions, 0 deletions
diff --git a/src/devices/bus/rc2014/romram.cpp b/src/devices/bus/rc2014/romram.cpp
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+++ b/src/devices/bus/rc2014/romram.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/***************************************************************************
+
+ RC2014 ROM/RAM Module
+
+****************************************************************************/
+
+#include "emu.h"
+#include "romram.h"
+#include "machine/intelfsh.h"
+
+namespace {
+
+//**************************************************************************
+// RC2014 512K RAM / 512K Flash
+// Module author: Spencer Owen
+//**************************************************************************
+
+class rom_ram_512k_device : public device_t, public device_rc2014_card_interface
+{
+public:
+ // construction/destruction
+ rom_ram_512k_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+ // device-level overrides
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+ virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
+ virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
+
+ void page_w(offs_t offset, uint8_t data) { m_page_reg[offset & 3] = data & 0x3f; }
+ void page_en_w(offs_t, uint8_t data) { m_page_en = data & 1; }
+
+private:
+ template<uint8_t Bank> void mem_w(offs_t offset, uint8_t data);
+ template<uint8_t Bank> uint8_t mem_r(offs_t offset);
+
+ uint8_t m_page_reg[4];
+ uint8_t m_page_en;
+ std::unique_ptr<u8[]> m_ram;
+ required_device<sst_39sf040_device> m_flash;
+};
+
+rom_ram_512k_device::rom_ram_512k_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, RC2014_ROM_RAM_512, tag, owner, clock)
+ , device_rc2014_card_interface(mconfig, *this)
+ , m_page_reg{0,0,0,0}
+ , m_page_en(0)
+ , m_ram(nullptr)
+ , m_flash(*this, "flash")
+{
+}
+
+void rom_ram_512k_device::device_start()
+{
+ m_ram = std::make_unique<u8[]>(0x80000);
+ std::fill_n(m_ram.get(), 0x80000, 0xff);
+ save_pointer(NAME(m_ram), 0x80000);
+ save_item(NAME(m_page_en));
+ save_item(NAME(m_page_reg));
+
+ m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x0000, 0x3fff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<0>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<0>)));
+ m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x4000, 0x7fff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<1>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<1>)));
+ m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x8000, 0xbfff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<2>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<2>)));
+ m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0xc000, 0xffff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<3>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<3>)));
+}
+
+void rom_ram_512k_device::device_reset()
+{
+ m_page_en = 0;
+ m_page_reg[0] = 0;
+ m_page_reg[1] = 0;
+ m_page_reg[2] = 0;
+ m_page_reg[3] = 0;
+
+ // A15-A8 and A3 not connected
+ m_bus->installer(AS_IO)->install_write_handler(0x70, 0x73, 0, 0xff08, 0, write8sm_delegate(*this, FUNC(rom_ram_512k_device::page_w)));
+ // A15-A8, A3, A1 and A0 not connected
+ m_bus->installer(AS_IO)->install_write_handler(0x74, 0x74, 0, 0xff0b, 0, write8sm_delegate(*this, FUNC(rom_ram_512k_device::page_en_w)));
+}
+
+void rom_ram_512k_device::device_add_mconfig(machine_config &config)
+{
+ SST_39SF040(config, m_flash);
+}
+
+template<uint8_t Bank>
+void rom_ram_512k_device::mem_w(offs_t offset, uint8_t data)
+{
+ if (m_page_en)
+ {
+ if (m_page_reg[Bank] & 0x20) {
+ m_ram[offset + ((m_page_reg[Bank] & 0x1f) << 14)] = data;
+ } else {
+ m_flash->write(offset + (m_page_reg[Bank] << 14), data);
+ }
+ }
+ else
+ {
+ m_flash->write(offset + (Bank << 14), data);
+ }
+}
+
+template<uint8_t Bank>
+uint8_t rom_ram_512k_device::mem_r(offs_t offset)
+{
+ if (m_page_en)
+ {
+ if ((offset>>14 == 0) && (m_page_reg[Bank] & 0x20)) {
+ return m_ram[offset + ((m_page_reg[Bank] & 0x1f) << 14)];
+ } else {
+ return m_flash->read(offset + (m_page_reg[Bank] << 14));
+ }
+ }
+ return m_flash->read(offset + (Bank << 14));
+}
+
+ROM_START(rc2014_rom_ram_512k)
+ ROM_REGION( 0x80000, "flash", 0)
+ ROM_DEFAULT_BIOS("3.0.1")
+ // Official ROMs distributed with kit
+ ROM_SYSTEM_BIOS(0, "1.512k", "RomWBW RC_Std.ROM 2.9.1-pre5")
+ ROMX_LOAD( "rc_1.512k.rom", 0x00000, 0x80000, CRC(f360d908) SHA1(e9c0c79f873eecff9184836025c13915630274c5), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "2.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With PPIDE")
+ ROMX_LOAD( "rc_2.512k.rom", 0x00000, 0x80000, CRC(c3aefb4e) SHA1(34541851dc781033b00cdfbe445e1d91811da5c2), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(2, "3.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With RTC")
+ ROMX_LOAD( "rc_3.512k.rom", 0x00000, 0x80000, CRC(749f7973) SHA1(2b78bb5ad0595b63c95dc58d48c5144320237362), ROM_BIOS(2))
+ ROM_SYSTEM_BIOS(3, "4.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With PPIDE and RTC")
+ ROMX_LOAD( "rc_4.512k.rom", 0x00000, 0x80000, CRC(fbe44292) SHA1(ae0407f0a605e9b1262ce00acf393c30fd87d1e4), ROM_BIOS(3))
+ ROM_SYSTEM_BIOS(4, "5.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy")
+ ROMX_LOAD( "rc_5.512k.rom", 0x00000, 0x80000, CRC(4e1d00dd) SHA1(57b21ce416a0a23e034c2efdb54f669f4b110878), ROM_BIOS(4))
+ ROM_SYSTEM_BIOS(5, "6.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy and PPIDE")
+ ROMX_LOAD( "rc_6.512k.rom", 0x00000, 0x80000, CRC(f2f1535e) SHA1(9121ca4246c520169cca47fda07143de8e903b3e), ROM_BIOS(5))
+ ROM_SYSTEM_BIOS(6, "7.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy and RTC")
+ ROMX_LOAD( "rc_7.512k.rom", 0x00000, 0x80000, CRC(57efe210) SHA1(b9ee93215d69c185d5af511a1105ee06e6474ff2), ROM_BIOS(6))
+ ROM_SYSTEM_BIOS(7, "8.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy, PPIDE and RTC")
+ ROMX_LOAD( "rc_8.512k.rom", 0x00000, 0x80000, CRC(38cc2dfc) SHA1(6e740224276b9d0ae32bb28095c8a8ccb47c38b5), ROM_BIOS(7))
+ // Official distribution of ROMWBW
+ // Taken from https://github.com/wwarthen/RomWBW/releases
+ ROM_SYSTEM_BIOS(8, "2.9.0", "Official RomWBW 2.9.0")
+ ROMX_LOAD( "rc_std_2_9_0.rom", 0x00000, 0x80000, CRC(2045d238) SHA1(dd37c945fd531192b368d80b20b0154e6b2d2a75), ROM_BIOS(8))
+ ROM_SYSTEM_BIOS(9, "2.9.1", "Official RomWBW 2.9.1")
+ ROMX_LOAD( "rcz80_std_2_9_1.rom", 0x00000, 0x80000, CRC(f7c52c5f) SHA1(86a0dbbecfea118cf66f9f35a21f138ce64ae788), ROM_BIOS(9))
+ ROM_SYSTEM_BIOS(10, "3.0.0", "Official RomWBW 3.0.0")
+ ROMX_LOAD( "rcz80_std_3_0_0.rom", 0x00000, 0x80000, CRC(15b802f8) SHA1(0941c6b00ccdca460d64d16fb374c0380dd431ad), ROM_BIOS(10))
+ ROM_SYSTEM_BIOS(11, "3.0.1", "Official RomWBW 3.0.1")
+ ROMX_LOAD( "rcz80_std_3_0_1.rom", 0x00000, 0x80000, CRC(6d6b60c5) SHA1(5c642cb3113bc0a51562dc92c8b46bde414adb6c), ROM_BIOS(11))
+ROM_END
+
+const tiny_rom_entry *rom_ram_512k_device::device_rom_region() const
+{
+ return ROM_NAME( rc2014_rom_ram_512k );
+}
+
+//**************************************************************************
+// SC119 Z180 Memory module
+// Module author: Stephen C Cousins
+//**************************************************************************
+
+class sc119_device : public device_t, public device_rc2014_rc80_card_interface
+{
+public:
+ // construction/destruction
+ sc119_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+ // device-level overrides
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
+ virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
+
+private:
+ std::unique_ptr<u8[]> m_ram;
+ required_device<sst_39sf040_device> m_flash;
+};
+
+sc119_device::sc119_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, RC2014_SC119, tag, owner, clock)
+ , device_rc2014_rc80_card_interface(mconfig, *this)
+ , m_ram(nullptr)
+ , m_flash(*this, "flash")
+{
+}
+
+void sc119_device::device_start()
+{
+ m_ram = std::make_unique<u8[]>(0x80000);
+ std::fill_n(m_ram.get(), 0x80000, 0xff);
+ save_pointer(NAME(m_ram), 0x80000);
+
+ // TODO: fix intelfsh
+ //m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x00000, 0x7ffff, read8sm_delegate(m_flash, FUNC(intelfsh8_device::read)), write8sm_delegate(m_flash, FUNC(intelfsh8_device::write)));
+ m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x00000, 0x7ffff, read8sm_delegate(m_flash, FUNC(intelfsh8_device::read_raw)), write8sm_delegate(m_flash, FUNC(intelfsh8_device::write_raw)));
+ m_bus->installer(AS_PROGRAM)->install_ram(0x80000, 0xfffff, m_ram.get());
+}
+
+void sc119_device::device_add_mconfig(machine_config &config)
+{
+ SST_39SF040(config, m_flash);
+}
+
+ROM_START(sc119_rom)
+ ROM_REGION( 0x80000, "flash", 0)
+ ROM_DEFAULT_BIOS("3.0.1")
+ ROM_SYSTEM_BIOS(0, "2.9.1", "Official RomWBW 2.9.1") // requires 38400 baudrate
+ ROMX_LOAD( "rcz180_nat_2_9_1.rom", 0x00000, 0x80000, CRC(a538538f) SHA1(8f989e7e777bd37fe552d55bc0b14771c4cb340b), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "3.0.0", "Official RomWBW 3.0.0")
+ ROMX_LOAD( "rcz180_nat_3_0_0.rom", 0x00000, 0x80000, CRC(9715e94e) SHA1(8dd7179a3bc471fb7fc1e5e2d1a930e8a858ab24), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(2, "3.0.1", "Official RomWBW 3.0.1")
+ ROMX_LOAD( "rcz180_nat_3_0_1.rom", 0x00000, 0x80000, CRC(a6cb0d80) SHA1(cf4ad058931f0297fd2f8f81d15eb83ecbd29376), ROM_BIOS(2))
+ROM_END
+
+const tiny_rom_entry *sc119_device::device_rom_region() const
+{
+ return ROM_NAME( sc119_rom );
+}
+
+}
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE_PRIVATE(RC2014_ROM_RAM_512, device_rc2014_card_interface, rom_ram_512k_device, "rc2014_rom_ram_512k", "RC2014 512K RAM / 512K Flash")
+DEFINE_DEVICE_TYPE_PRIVATE(RC2014_SC119, device_rc2014_rc80_card_interface, sc119_device, "sc119", "SC119 Z180 Memory module")