mirror of
https://github.com/holub/mame
synced 2025-04-25 09:50:04 +03:00
rewrote GameKing skeleton driver, dumped + added internal ROM, boots and runs menu, not yet fully working [Peter Trauner]
This commit is contained in:
David Haywood
parent
41e4628631
commit
d6c6a15b38
@ -1,31 +1,29 @@
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// license:BSD-3-Clause
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// copyright-holders:Wilbert Pol
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// license:GPL-2.0+
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// copyright-holders:Peter Trauner
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/* TimeTop - GameKing */
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// these are meant to have a 3-in-1 internal ROM, not dumped
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/*
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The carridge dumps have something what looks like vectors/pointers to interesting pieces
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of code at offsets like $004c, $0050, $0054, $0060, $0064, $0068, and $0070 (some carts).
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At offset $004c there is usually $00 $40, $00, $01; this seems to point to bank #1/offset $4000,
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which should get banked in at address $4000. There is valid at offset $4000 in the cartridge
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dumps.
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There seem to be some RAM that starts at $1000 in the memomry map.
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A routine at $0f80 seems to be called a lot. It's probably some kind of entry into the
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bios to perform several functions. The function to perform seems to be passed through
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the A register with pointer to parameters stored at $0080-$0081 (multiple parameters/
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blocks?).
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The reset and irq vectors seem to be the same in most, if not all, cartridge dumps. It
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is very likely that they point to code in the internal bios.
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PeT mess@utanet.at 2015
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Thanks to Deathadder, Judge, Porchy, Klaus Sommer, James Brolly + last and also least Brian Provinciano
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hopefully my work (reverse engineerung, cartridge+bios backup, emulation) will be honored in future
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and my name will not be removed entirely, especially by simple code rewrites of working emulation
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flashcard, handheld, programmer, assembler ready to do some test on real hardware
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todo:
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!back up gameking3 bios so emulation of gameking3 gets possible; my gameking bios backup solution should work
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search for rockwell r65c02 variant (cb:wai instruction) and several more exceptions, and implement it
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(with luck microcontroller peripherals match those in gameking)
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work out bankswitching and exceptions
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(improove emulation)
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(add audio)
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use gameking3 cartridge to get illegal cartridge scroller
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*/
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#include "emu.h"
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#include "cpu/m6502/m65ce02.h"
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#include "cpu/m6502/r65c02.h"
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#include "bus/generic/slot.h"
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#include "bus/generic/carts.h"
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#include "softlist.h"
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@ -37,51 +35,143 @@ public:
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_cart(*this, "cartslot"),
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m_io_joy(*this, "JOY"),
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m_palette(*this, "palette")
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{ }
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DECLARE_DRIVER_INIT(gameking);
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virtual void machine_start() override;
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virtual void machine_reset() override;
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DECLARE_PALETTE_INIT(gameking);
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DECLARE_READ8_MEMBER(io_r);
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DECLARE_WRITE8_MEMBER(io_w);
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DECLARE_READ8_MEMBER(lcd_r);
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DECLARE_WRITE8_MEMBER(lcd_w);
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INTERRUPT_GEN_MEMBER(gameking_frame_int);
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TIMER_CALLBACK_MEMBER(gameking_timer);
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TIMER_CALLBACK_MEMBER(gameking_timer2);
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UINT32 screen_update_gameking(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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DECLARE_DEVICE_IMAGE_LOAD_MEMBER(gameking_cart);
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struct Gkio {
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UINT8 input, input2;
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UINT8 timer;
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UINT8 res3[0x2f];
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UINT8 bank4000_address; // 32
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UINT8 bank4000_cart; //33 bit 0 only?
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UINT8 bank8000_cart; //34 bit 7; bits 0,1,.. a15,a16,..
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UINT8 res2[0x4c];
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};
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protected:
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required_device<cpu_device> m_maincpu;
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required_device<generic_slot_device> m_cart;
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required_ioport m_io_joy;
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required_device<palette_device> m_palette;
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memory_region *m_cart_rom;
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memory_bank *m_bank4000;
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memory_bank *m_bank8000;
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memory_bank *m_bankc000;
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emu_timer *timer1;
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emu_timer *timer2;
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};
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WRITE8_MEMBER(gameking_state::io_w)
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{
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if (offset != offsetof(Gkio, bank8000_cart))
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logerror("%.6f io w %x %x\n", machine().time().as_double(), offset, data);
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memory_region *maincpu_rom = memregion("maincpu");
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maincpu_rom->base()[offset] = data;
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if (offset == offsetof(Gkio, timer)) {
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m_maincpu->set_input_line(M6502_IRQ_LINE, CLEAR_LINE);
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timer1->enable(TRUE);
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timer1->reset(m_maincpu->cycles_to_attotime(data * 300/*?*/));
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}
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Gkio *io = reinterpret_cast<Gkio*>(maincpu_rom->base());
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if (offset == offsetof(Gkio, bank4000_address) || offset == offsetof(Gkio, bank4000_cart)) {
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UINT8 bank = io->bank4000_address ^ 1;
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UINT8 *base = io->bank4000_cart & 1/*?*/ && m_cart_rom ? m_cart_rom->base() : maincpu_rom->base() + 0x10000;
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m_bank4000->set_base(base + bank * 0x4000);
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}
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if (offset == offsetof(Gkio, bank8000_cart)) {
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UINT8 *base = io->bank8000_cart & 0x80/*?*/ && m_cart_rom ? m_cart_rom->base() : maincpu_rom->base() + 0x10000;
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UINT8 bank = io->bank8000_cart & 0x7f;
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m_bank8000->set_base(base + bank * 0x8000);
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}
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}
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READ8_MEMBER(gameking_state::io_r)
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{
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memory_region *maincpu_rom = memregion("maincpu");
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UINT8 data = maincpu_rom->base()[offset];
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switch (offset) {
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case offsetof(Gkio, input):
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data = m_io_joy->read() | ~3;
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break;
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case offsetof(Gkio, input2):
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data = m_io_joy->read() | 3;
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break;
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case 0x4c: data = 6;
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break; // bios protection endless loop
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}
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if (offset != offsetof(Gkio, bank8000_cart))
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logerror("%.6f io r %x %x\n", machine().time().as_double(), offset, data);
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return data;
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}
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WRITE8_MEMBER( gameking_state::lcd_w )
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{
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memory_region *maincpu_rom = memregion("maincpu");
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maincpu_rom->base()[offset+0x600]=data;
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}
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READ8_MEMBER(gameking_state::lcd_r)
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{
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memory_region *maincpu_rom = memregion("maincpu");
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UINT8 data = maincpu_rom->base()[offset + 0x600];
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return data;
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}
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static ADDRESS_MAP_START( gameking_mem , AS_PROGRAM, 8, gameking_state )
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AM_RANGE(0x0000, 0x01ff) AM_RAM
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AM_RANGE(0x0000, 0x007f) AM_READWRITE(io_r, io_w)
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AM_RANGE(0x0080, 0x01ff) AM_RAM
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AM_RANGE(0x0200, 0x03ff) AM_RAM // lcd 2nd copy
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AM_RANGE(0x0f00, 0x0fff) AM_ROM
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AM_RANGE(0x1000, 0x1fff) AM_RAM // sthero writes to $19xx
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AM_RANGE(0x0600, 0x077f) AM_READWRITE(lcd_r, lcd_w)
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AM_RANGE(0x0d00, 0x0fff) AM_RAM // d00, e00, f00 prooved on handheld
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// AM_RANGE(0x1000, 0x1fff) AM_RAM // sthero writes to $19xx
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// AM_RANGE(0x3000, 0x3fff) AM_ROMBANK("bank3000")
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AM_RANGE(0x4000, 0x7fff) AM_ROMBANK("bank4000")
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AM_RANGE(0x8000, 0xcfff) AM_ROMBANK("bank8000")
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AM_RANGE(0xc000, 0xffff) AM_ROMBANK("bankc000")
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AM_RANGE(0x8000, 0xffaf) AM_ROMBANK("bank8000")
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AM_RANGE(0xffb0, 0xffff) AM_ROMBANK("bankboot") // cpu seems to read from 8000 bank, and for exceptions ignore bank
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ADDRESS_MAP_END
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static INPUT_PORTS_START( gameking )
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PORT_START("JOY")
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START) PORT_NAME("Start")
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SELECT) PORT_NAME("Select") //?
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PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_NAME("A") //?
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("B")
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) //?
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PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) //?
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PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
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PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP)
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INPUT_PORTS_END
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static const unsigned char gameking_palette[] =
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{
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0, 0, 0,
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63, 63, 63,
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255, 255, 255,
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127, 127, 127,
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255, 255, 255
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63, 63, 63,
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0, 0, 0
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};
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PALETTE_INIT_MEMBER(gameking_state, gameking)
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@ -93,14 +183,45 @@ PALETTE_INIT_MEMBER(gameking_state, gameking)
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UINT32 gameking_state::screen_update_gameking(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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for (int y=31, i=0;i<32;i++,y--)
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{
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for (int x=0, j=0;j<48/4;x+=4, j++)
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{
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memory_region *maincpu_rom = memregion("maincpu");
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UINT8 data=maincpu_rom->base()[0x600+j+i*12];
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bitmap.pix16(y, x+3)=data&3;
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bitmap.pix16(y, x+2)=(data>>2)&3;
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bitmap.pix16(y, x+1)=(data>>4)&3;
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bitmap.pix16(y, x)=(data>>6)&3;
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}
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}
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return 0;
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}
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DRIVER_INIT_MEMBER(gameking_state, gameking)
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{
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timer1 = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(gameking_state::gameking_timer), this));
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timer2 = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(gameking_state::gameking_timer2), this));
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}
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TIMER_CALLBACK_MEMBER(gameking_state::gameking_timer)
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{
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m_maincpu->set_input_line(M6502_IRQ_LINE, ASSERT_LINE); // in reality int for vector at fff4
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timer1->enable(FALSE);
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timer2->enable(TRUE);
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timer2->reset(m_maincpu->cycles_to_attotime(10/*?*/));
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}
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TIMER_CALLBACK_MEMBER(gameking_state::gameking_timer2)
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{
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memory_region *maincpu_rom = memregion("maincpu");
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m_maincpu->set_input_line(M6502_IRQ_LINE, CLEAR_LINE); // in reality int for vector at fff4
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timer2->enable(FALSE);
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timer1->enable(TRUE);
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Gkio *io = reinterpret_cast<Gkio*>(maincpu_rom->base());
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timer1->reset(m_maincpu->cycles_to_attotime(io->timer * 300/*?*/));
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}
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DEVICE_IMAGE_LOAD_MEMBER( gameking_state, gameking_cart )
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{
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@ -120,46 +241,40 @@ DEVICE_IMAGE_LOAD_MEMBER( gameking_state, gameking_cart )
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void gameking_state::machine_start()
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{
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std::string region_tag;
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m_cart_rom = memregion(region_tag.assign(m_cart->tag()).append(GENERIC_ROM_REGION_TAG).c_str());
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if (!m_cart_rom)
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{
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printf("No Rom\n");
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return;
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}
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std::string region_tag;
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m_cart_rom = memregion(region_tag.assign(m_cart->tag()).append(GENERIC_ROM_REGION_TAG).c_str());
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m_bank4000 = membank("bank4000");
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m_bank8000 = membank("bank8000");
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m_bankc000 = membank("bankc000");
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// Minor hacking to get things going (should be removed when we have bios dump)
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m_cart_rom->base()[0x3ffc] = 0x00;
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m_cart_rom->base()[0x3ffd] = 0x40;
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// Some fake code to get bios function calls logged
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memory_region *maincpu_rom = memregion("maincpu");
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maincpu_rom->base()[0x0f80] = 0x9d; // STA $0e00,X
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maincpu_rom->base()[0x0f81] = 0x00;
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maincpu_rom->base()[0x0f82] = 0x0e;
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maincpu_rom->base()[0x0f83] = 0x60; // RTS
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m_bank8000->set_base(m_cart_rom->base());
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m_bankc000->set_base(m_cart_rom->base());
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m_bank4000->set_base(m_cart_rom->base() + 0x4000);
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memory_bank *bankboot=membank("bankboot");
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maincpu_rom->base()[0x10000+0x7ffe]=0xcf; // routing irq to timerint until r65c02gk hooked up
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bankboot->set_base(maincpu_rom->base()+0x10000+0x7fb0);
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}
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void gameking_state::machine_reset()
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{
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memory_region *maincpu_rom = memregion("maincpu");
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maincpu_rom->base()[0x32] = 0; // neccessary to boot correctly
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maincpu_rom->base()[0x33] = 0;
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m_bank4000->set_base(maincpu_rom->base() + 0x10000 + 0x4000);
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//m_bank8000->set_base(maincpu_rom->base()+0x10000); //? no reason to enforce this yet
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}
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INTERRUPT_GEN_MEMBER(gameking_state::gameking_frame_int) // guess to get over bios wai
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{
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// static int line=0;
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// line++;
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// m_maincpu->set_input_line(M6502_IRQ_LINE, line&1? ASSERT_LINE: CLEAR_LINE); // in reality int for vector at fff4
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}
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static MACHINE_CONFIG_START( gameking, gameking_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", M65CE02, 6000000)
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MCFG_CPU_ADD("maincpu", R65C02, 6000000)
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MCFG_CPU_PROGRAM_MAP(gameking_mem)
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//MCFG_CPU_VBLANK_INT_DRIVER("screen", gameking_state, gameking_frame_int)
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MCFG_CPU_VBLANK_INT_DRIVER("screen", gameking_state, gameking_frame_int)
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/* video hardware */
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MCFG_SCREEN_ADD("screen", LCD)
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@ -172,24 +287,36 @@ static MACHINE_CONFIG_START( gameking, gameking_state )
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MCFG_PALETTE_ADD("palette", ARRAY_LENGTH(gameking_palette) * 3)
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MCFG_PALETTE_INIT_OWNER(gameking_state, gameking )
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/* cartridge */
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MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "gameking_cart")
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MCFG_GENERIC_EXTENSIONS("bin")
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MCFG_GENERIC_MANDATORY
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MCFG_GENERIC_LOAD(gameking_state, gameking_cart)
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/* Software lists */
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MCFG_SOFTWARE_LIST_ADD("cart_list", "gameking")
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MCFG_SOFTWARE_LIST_ADD("cart_list_3", "gameking3") // maybe not compatible with this system (different internal bios?)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( gameking1, gameking )
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MCFG_SOFTWARE_LIST_ADD("cart_list", "gameking")
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( gameking3, gameking )
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MCFG_SOFTWARE_LIST_ADD("cart_list", "gameking")
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MCFG_SOFTWARE_LIST_ADD("cart_list_3", "gameking3")
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MACHINE_CONFIG_END
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ROM_START(gameking)
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ROM_REGION(0x8000, "maincpu", ROMREGION_ERASE00)
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ROM_REGION(0x10000+0x80000, "maincpu", ROMREGION_ERASE00)
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// ROM_LOAD("gm218.bin", 0x10000, 0x80000, CRC(8f52a928) SHA1(2e791fc7b642440d36820d2c53e1bb732375eb6e) ) // a14 inversed
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ROM_LOAD("gm218.bin", 0x10000, 0x80000, CRC(5a1ade3d) SHA1(e0d056f8ebfdf52ef6796d0375eba7fcc4a6a9d3) )
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ROM_END
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ROM_START(gamekin3)
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ROM_REGION(0x10000+0x80000, "maincpu", ROMREGION_ERASE00)
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ROM_LOAD("gameking3", 0x10000, 0x80000,NO_DUMP )
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ROM_END
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CONS(2003, gameking, 0, 0, gameking, gameking, gameking_state, gameking, "TimeTop", "GameKing GM-218", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
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CONS(2003, gameking, 0, 0, gameking1, gameking, gameking_state, gameking, "TimeTop", "GameKing GM-218", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
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// the GameKing 2 (GM-219) is probably identical HW
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CONS(2003, gamekin3, 0, 0, gameking3, gameking, gameking_state, gameking, "TimeTop", "GameKing 3", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
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// gameking 3: similiar cartridges, accepts gameking cartridges, gameking3 cartridges not working on gameking (illegal cartridge scroller)
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// my gameking bios backup solution might work on it
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@ -2759,6 +2759,7 @@ tecnbras
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minicom
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mcom4_02
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gameking
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gamekin3
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leapster
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leapstertv
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excali64
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