mirror of
https://github.com/holub/mame
synced 2025-04-21 16:01:56 +03:00
(MESS) a7800.c: [Fabio Priuli]
- Fixed YM2151 clock in XM expansion, thanks to info from
tep392 and GroovyBee
- Added support for homebrew boards MegaCart+ and
VersaBoard by CPUWIZ (ROM respectively up to 512K
and 256K + 32K of RAM)
- Misc cleanups
out of whatsnew: I have also added, for debugging purposes, a VersaBoard with SG 9banks + POKEY at 0x0450
in the hope to find out exactly what goes currently wrong in the emulation of some homebrew games... let's see...
This commit is contained in:
Fabio Priuli
parent
14fb245bf6
commit
1ddc69fe10
@ -2449,9 +2449,9 @@ almost nothing like the prototype.
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<sharedfeat name="compatibility" value="PAL"/>
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<part name="cart" interface="a7800_cart">
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<feature name="pcb_type" value="TYPE-XM" />
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<feature name="slot" value="a78_xmc" />
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<dataarea name="rom" size="0x24000">
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<rom name="dkxm_final_demo_pal.a78" size="0x24000" crc="d362712e" sha1="118c462d6698bd23c378785f80062fdd7d65ca00" offset="0" />
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<feature name="slot" value="a78_sg9" />
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<dataarea name="rom" size="147456">
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<rom name="dkxm_final_demo_pal.bin" size="147456" crc="d362712e" sha1="118c462d6698bd23c378785f80062fdd7d65ca00" offset="0" />
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</dataarea>
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</part>
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</software>
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@ -2464,9 +2464,9 @@ almost nothing like the prototype.
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<sharedfeat name="compatibility" value="NTSC"/>
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<part name="cart" interface="a7800_cart">
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<feature name="pcb_type" value="TYPE-XM" />
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<feature name="slot" value="a78_xmc" />
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<dataarea name="rom" size="0x24000">
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<rom name="dkxm_final_demo_ntsc.a78" size="0x24000" crc="6e170055" sha1="f4da231312da06ff9e8af5681b5013b14886b455" offset="0" />
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<feature name="slot" value="a78_sg9" />
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<dataarea name="rom" size="147456">
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<rom name="dkxm_final_demo_ntsc.bin" size="147456" crc="6e170055" sha1="f4da231312da06ff9e8af5681b5013b14886b455" offset="0" />
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</dataarea>
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</part>
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</software>
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@ -1,12 +1,12 @@
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#ifndef __A78_CARTS_H
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#define __A78_CARTS_H
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#include "emu.h"
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#include "rom.h"
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#include "xboard.h"
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#include "hiscore.h"
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#include "cpuwiz.h"
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static SLOT_INTERFACE_START(a7800_cart)
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SLOT_INTERFACE_INTERNAL("a78_rom", A78_ROM)
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@ -14,15 +14,16 @@ static SLOT_INTERFACE_START(a7800_cart)
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SLOT_INTERFACE_INTERNAL("a78_sg", A78_ROM_SG)
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SLOT_INTERFACE_INTERNAL("a78_sg_pokey", A78_ROM_SG_POKEY)
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SLOT_INTERFACE_INTERNAL("a78_sg_ram", A78_ROM_SG_RAM)
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// not sure which dev cart support banked ram, nor whether there shall be a 9banks or a non-sg version of this...
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SLOT_INTERFACE_INTERNAL("a78_bankram", A78_ROM_BANKRAM)
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SLOT_INTERFACE_INTERNAL("a78_sg9", A78_ROM_SG_9BANKS)
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SLOT_INTERFACE_INTERNAL("a78_xmc", A78_ROM_XM) // carts compatible with the expansions below (basically a 9Banks+POKEY)
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SLOT_INTERFACE_INTERNAL("a78_sg9", A78_ROM_SG9)
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SLOT_INTERFACE_INTERNAL("a78_sg9_pokey",A78_ROM_SG9_POKEY) // carts compatible with the expansions below (basically a 9Banks+POKEY)
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SLOT_INTERFACE_INTERNAL("a78_abs", A78_ROM_ABSOLUTE)
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SLOT_INTERFACE_INTERNAL("a78_act", A78_ROM_ACTIVISION)
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SLOT_INTERFACE_INTERNAL("a78_hsc", A78_HISCORE)
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SLOT_INTERFACE_INTERNAL("a78_xboard", A78_XBOARD) // the actual XBoarD expansion (as passthru)
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SLOT_INTERFACE_INTERNAL("a78_xm", A78_XM) // the actual XM expansion (as passthru)
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SLOT_INTERFACE_INTERNAL("a78_megacart", A78_ROM_MEGACART)
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SLOT_INTERFACE_INTERNAL("a78_versa", A78_ROM_VERSABOARD)
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SLOT_INTERFACE_INTERNAL("a78_versap", A78_ROM_VERSAPOKEY) // For debugging purposes
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SLOT_INTERFACE_END
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@ -170,20 +170,22 @@ struct a78_slot
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// Here, we take the feature attribute from .xml (i.e. the PCB name) and we assign a unique ID to it
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static const a78_slot slot_list[] =
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{
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{ A78_TYPE0, "a78_rom" },
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{ A78_TYPE1, "a78_pokey" },
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{ A78_TYPE2, "a78_sg" },
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{ A78_TYPE3, "a78_sg_pokey" },
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{ A78_TYPE6, "a78_sg_ram" },
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{ A78_TYPEA, "a78_sg9" },
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{ A78_TYPEB, "a78_xmc" },
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{ A78_ABSOLUTE, "a78_abs" },
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{ A78_TYPE0, "a78_rom" },
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{ A78_TYPE1, "a78_pokey" },
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{ A78_TYPE2, "a78_sg" },
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{ A78_TYPE3, "a78_sg_pokey" },
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{ A78_TYPE6, "a78_sg_ram" },
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{ A78_TYPEA, "a78_sg9" },
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{ A78_TYPEB, "a78_sg9_pokey" },
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{ A78_ABSOLUTE, "a78_abs" },
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{ A78_ACTIVISION, "a78_act" },
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{ A78_HSC, "a78_hsc" },
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{ A78_BANKRAM, "a78_bankram" },
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{ A78_XB_BOARD, "a78_xboard" },
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{ A78_XM_BOARD, "a78_xm" },
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{ A78_NOCART, "empty" },
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{ A78_HSC, "a78_hsc" },
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{ A78_XB_BOARD, "a78_xboard" },
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{ A78_XM_BOARD, "a78_xm" },
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{ A78_MEGACART, "a78_megacart" },
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{ A78_VERSABOARD, "a78_versa" },
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{ A78_VERSAPOKEY, "a78_versap" },
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{ A78_NOCART, "empty" }, // the code should never get here, of course...
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};
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static int a78_get_pcb_id(const char *slot)
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@ -269,7 +271,13 @@ bool a78_cart_slot_device::call_load()
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m_type = A78_TYPEB;
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break;
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case 0x0020:
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m_type = A78_BANKRAM;
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if (len > 0x40000)
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m_type = A78_MEGACART;
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else
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m_type = A78_VERSABOARD;
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break;
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case 0x0021:
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m_type = A78_VERSAPOKEY;
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break;
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case 0x0100:
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m_type = A78_ACTIVISION;
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@ -291,7 +299,7 @@ bool a78_cart_slot_device::call_load()
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if (m_type == A78_TYPE6)
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m_cart->ram_alloc(0x4000);
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if (m_type == A78_BANKRAM)
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if (m_type == A78_MEGACART || m_type == A78_VERSABOARD || m_type == A78_VERSAPOKEY)
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m_cart->ram_alloc(0x8000);
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if (m_type == A78_XB_BOARD || m_type == A78_XM_BOARD)
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m_cart->ram_alloc(0x20000);
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@ -394,7 +402,13 @@ void a78_cart_slot_device::get_default_card_software(astring &result)
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type = A78_TYPEB;
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break;
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case 0x0020:
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m_type = A78_BANKRAM;
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if (core_fsize(m_file) > 0x40000)
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type = A78_MEGACART;
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else
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type = A78_VERSABOARD;
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break;
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case 0x0021:
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type = A78_VERSAPOKEY;
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break;
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case 0x0100:
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type = A78_ACTIVISION;
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@ -16,13 +16,15 @@ enum
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A78_TYPE3, // as TYPE1 + POKEY chip on the PCB
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A78_TYPE6, // as TYPE1 + RAM IC on the PCB
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A78_TYPEA, // Alien Brigade, Crossbow (9x16K banks with diff bankswitch)
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A78_TYPEB, // Cart exploiting the XB board, but possibly also compatible with non-expanded A7800
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A78_ABSOLUTE, // F18 Hornet
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A78_ACTIVISION, // Double Dragon, Rampage
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A78_HSC, // Atari HighScore cart
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A78_BANKRAM, // SuperGame + 32K RAM banked (untested)
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A78_XB_BOARD, // A7800 Expansion Board (it shall more or less apply to the Expansion Module too, but this is not officially released yet)
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A78_XM_BOARD, // A7800 XM Expansion Module (theoretical specs only, since this is not officially released yet)
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A78_TYPEB, // Cart exploiting the XB board, but possibly also compatible with non-expanded A7800
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A78_MEGACART, // Homebrew by CPUWIZ, consists of SuperGame bank up to 512K + 32K RAM banked
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A78_VERSABOARD, // Homebrew by CPUWIZ, consists of SuperGame bank up to 256K + 32K RAM banked
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A78_VERSAPOKEY, // For debugging purpose, same as VersaBoard + SG 9 Banks + POKEY at 0x0450
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A78_NOCART
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};
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@ -26,9 +26,8 @@ const device_type A78_ROM_SG = &device_creator<a78_rom_sg_device>;
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const device_type A78_ROM_POKEY = &device_creator<a78_rom_pokey_device>;
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const device_type A78_ROM_SG_POKEY = &device_creator<a78_rom_sg_pokey_device>;
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const device_type A78_ROM_SG_RAM = &device_creator<a78_rom_sg_ram_device>;
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const device_type A78_ROM_BANKRAM = &device_creator<a78_rom_bankram_device>;
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const device_type A78_ROM_SG_9BANKS = &device_creator<a78_rom_sg_9banks_device>;
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const device_type A78_ROM_XM = &device_creator<a78_rom_xm_device>;
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const device_type A78_ROM_SG9 = &device_creator<a78_rom_sg9_device>;
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const device_type A78_ROM_SG9_POKEY = &device_creator<a78_rom_sg9_pokey_device>;
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const device_type A78_ROM_ABSOLUTE = &device_creator<a78_rom_abs_device>;
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const device_type A78_ROM_ACTIVISION = &device_creator<a78_rom_act_device>;
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@ -75,25 +74,19 @@ a78_rom_sg_ram_device::a78_rom_sg_ram_device(const machine_config &mconfig, cons
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}
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a78_rom_bankram_device::a78_rom_bankram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: a78_rom_sg_device(mconfig, A78_ROM_BANKRAM, "Atari 7800 ROM Carts w/SuperGame Bankswitch + Banked RAM", tag, owner, clock, "a78_rom_bankram", __FILE__)
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{
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}
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a78_rom_sg_9banks_device::a78_rom_sg_9banks_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source)
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a78_rom_sg9_device::a78_rom_sg9_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source)
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: a78_rom_sg_device(mconfig, type, name, tag, owner, clock, shortname, source)
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{
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}
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a78_rom_sg_9banks_device::a78_rom_sg_9banks_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: a78_rom_sg_device(mconfig, A78_ROM_SG_9BANKS, "Atari 7800 ROM Carts w/SuperGame 9Banks", tag, owner, clock, "a78_rom_sg9", __FILE__)
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a78_rom_sg9_device::a78_rom_sg9_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: a78_rom_sg_device(mconfig, A78_ROM_SG9, "Atari 7800 ROM Carts w/SuperGame 9Banks", tag, owner, clock, "a78_rom_sg9", __FILE__)
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{
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}
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a78_rom_xm_device::a78_rom_xm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: a78_rom_sg_9banks_device(mconfig, A78_ROM_XM, "Atari 7800 ROM Carts w/SuperGame 9Banks + POKEY (XM demo)", tag, owner, clock, "a78_rom_xm", __FILE__),
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a78_rom_sg9_pokey_device::a78_rom_sg9_pokey_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: a78_rom_sg9_device(mconfig, A78_ROM_SG9_POKEY, "Atari 7800 ROM Carts w/SuperGame 9Banks + POKEY", tag, owner, clock, "a78_rom_sg9p", __FILE__),
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m_pokey(*this, "pokey")
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{
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}
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@ -130,18 +123,6 @@ void a78_rom_sg_device::device_reset()
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m_bank = 0;
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}
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void a78_rom_bankram_device::device_start()
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{
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save_item(NAME(m_bank));
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save_item(NAME(m_ram_bank));
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}
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void a78_rom_bankram_device::device_reset()
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{
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m_bank = 0;
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m_ram_bank = 0;
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}
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void a78_rom_abs_device::device_start()
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{
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save_item(NAME(m_bank));
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@ -300,38 +281,6 @@ WRITE8_MEMBER(a78_rom_sg_ram_device::write_40xx)
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}
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/*-------------------------------------------------
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Carts with SuperGame bankswitch + 32K RAM:
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RAM bank is selected by writing with bit5 enabled
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in 0x4000-0x7fff range (bit0-bit4 give the ROM bank)
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GAMES:
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-------------------------------------------------*/
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READ8_MEMBER(a78_rom_bankram_device::read_40xx)
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{
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if (offset < 0x4000)
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return m_ram[offset + (m_ram_bank * 0x4000)];
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else if (offset < 0x8000)
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return m_rom[(offset & 0x3fff) + (m_bank * 0x4000)];
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else
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return m_rom[(offset & 0x3fff) + (m_bank_mask * 0x4000)]; // last bank
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}
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WRITE8_MEMBER(a78_rom_bankram_device::write_40xx)
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{
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if (offset < 0x4000)
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m_ram[offset] = data;
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else if (offset < 0x8000)
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{
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m_bank = data & m_bank_mask;
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m_ram_bank = BIT(data, 5);
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}
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}
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/*-------------------------------------------------
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Carts with SuperGame bankswitch 9banks:
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@ -342,7 +291,7 @@ WRITE8_MEMBER(a78_rom_bankram_device::write_40xx)
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-------------------------------------------------*/
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READ8_MEMBER(a78_rom_sg_9banks_device::read_40xx)
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READ8_MEMBER(a78_rom_sg9_device::read_40xx)
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{
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if (offset < 0x4000)
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return m_rom[(offset & 0x3fff)];
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@ -352,7 +301,7 @@ READ8_MEMBER(a78_rom_sg_9banks_device::read_40xx)
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return m_rom[(offset & 0x3fff) + ((m_bank_mask + 1) * 0x4000)]; // last bank
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}
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WRITE8_MEMBER(a78_rom_sg_9banks_device::write_40xx)
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WRITE8_MEMBER(a78_rom_sg9_device::write_40xx)
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{
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if (offset >= 0x4000 && offset < 0x8000)
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m_bank = (data & m_bank_mask) + 1;
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@ -360,24 +309,29 @@ WRITE8_MEMBER(a78_rom_sg_9banks_device::write_40xx)
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/*-------------------------------------------------
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Carts using XM expansion module or XBoarD expansion
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The only game using this (Donkey Kong XM demo) is
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144K + POKEY, so that it's like the above with the
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addition of the POKEY.
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Carts with SuperGame bankswitch 9banks + POKEY:
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This was not used in any commercial game released
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during A7800 lifespan, but it is used by Donkey
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Kong XM demo and by Bentley Bear's Crystal Quest
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for use with XM expansion module or XBoarD expansion
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GAMES: Donkey Kong XM demo
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GAMES: Donkey Kong XM demo, Bentley Bear's Crystal
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Quest
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-------------------------------------------------*/
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WRITE8_MEMBER(a78_rom_xm_device::write_40xx)
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WRITE8_MEMBER(a78_rom_sg9_pokey_device::write_40xx)
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{
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if (offset < 0x4000)
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{
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printf("write offs 0x%X data 0x%X\n", offset, data);
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m_pokey->write(space, offset & 0x0f, data);
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}
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else if (offset < 0x8000)
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m_bank = (data & m_bank_mask) + 1;
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}
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machine_config_constructor a78_rom_xm_device::device_mconfig_additions() const
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machine_config_constructor a78_rom_sg9_pokey_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( a78_pokey );
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}
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@ -98,35 +98,14 @@ public:
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};
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// ======================> a78_rom_bankram_device
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// ======================> a78_rom_sg9_device
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class a78_rom_bankram_device : public a78_rom_sg_device
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class a78_rom_sg9_device : public a78_rom_sg_device
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{
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public:
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// construction/destruction
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a78_rom_bankram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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// reading and writing
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virtual DECLARE_READ8_MEMBER(read_40xx);
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virtual DECLARE_WRITE8_MEMBER(write_40xx);
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protected:
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int m_ram_bank;
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};
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// ======================> a78_rom_sg_9banks_device
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class a78_rom_sg_9banks_device : public a78_rom_sg_device
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{
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public:
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// construction/destruction
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a78_rom_sg_9banks_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
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a78_rom_sg_9banks_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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a78_rom_sg9_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
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a78_rom_sg9_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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||||
|
||||
// reading and writing
|
||||
virtual DECLARE_READ8_MEMBER(read_40xx);
|
||||
@ -134,13 +113,13 @@ public:
|
||||
};
|
||||
|
||||
|
||||
// ======================> a78_rom_xm_device
|
||||
// ======================> a78_rom_sg9_pokey_device
|
||||
|
||||
class a78_rom_xm_device : public a78_rom_sg_9banks_device
|
||||
class a78_rom_sg9_pokey_device : public a78_rom_sg9_device
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
a78_rom_xm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
|
||||
a78_rom_sg9_pokey_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
|
||||
|
||||
// device-level overrides
|
||||
virtual machine_config_constructor device_mconfig_additions() const;
|
||||
@ -201,9 +180,8 @@ extern const device_type A78_ROM_SG;
|
||||
extern const device_type A78_ROM_POKEY;
|
||||
extern const device_type A78_ROM_SG_POKEY;
|
||||
extern const device_type A78_ROM_SG_RAM;
|
||||
extern const device_type A78_ROM_BANKRAM;
|
||||
extern const device_type A78_ROM_SG_9BANKS;
|
||||
extern const device_type A78_ROM_XM;
|
||||
extern const device_type A78_ROM_SG9;
|
||||
extern const device_type A78_ROM_SG9_POKEY;
|
||||
extern const device_type A78_ROM_ABSOLUTE;
|
||||
extern const device_type A78_ROM_ACTIVISION;
|
||||
|
||||
|
||||
@ -121,7 +121,7 @@ static MACHINE_CONFIG_FRAGMENT( a78_xm )
|
||||
MCFG_SOUND_ADD("xb_pokey", POKEY, XTAL_14_31818MHz/8)
|
||||
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
|
||||
|
||||
MCFG_SOUND_ADD("xm_ym2151", YM2151, XTAL_14_31818MHz/8)
|
||||
MCFG_SOUND_ADD("xm_ym2151", YM2151, XTAL_14_31818MHz/4)
|
||||
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
@ -228,6 +228,7 @@ WRITE8_MEMBER(a78_xm_device::write_04xx)
|
||||
m_xbslot->write_04xx(space, offset - 0x10, data); // access second POKEY
|
||||
else if (offset >= 0x70 && offset < 0x80)
|
||||
{
|
||||
//printf("regs 0x%X\n", data);
|
||||
if (data == 0x84)
|
||||
m_ym_enabled = 1;
|
||||
m_reg = data;
|
||||
|
||||
@ -25,6 +25,7 @@ BUSOBJS += $(BUSOBJ)/a7800/a78_slot.o
|
||||
BUSOBJS += $(BUSOBJ)/a7800/rom.o
|
||||
BUSOBJS += $(BUSOBJ)/a7800/hiscore.o
|
||||
BUSOBJS += $(BUSOBJ)/a7800/xboard.o
|
||||
BUSOBJS += $(BUSOBJ)/a7800/cpuwiz.o
|
||||
endif
|
||||
|
||||
|
||||
|
||||
@ -1323,6 +1323,7 @@ void a7800_state::machine_start()
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x3000, 0x3fff, read8_delegate(FUNC(a78_cart_slot_device::read_30xx),(a78_cart_slot_device*)m_cartslot), write8_delegate(FUNC(a78_cart_slot_device::write_30xx),(a78_cart_slot_device*)m_cartslot));
|
||||
break;
|
||||
case A78_XB_BOARD:
|
||||
case A78_VERSAPOKEY:
|
||||
// POKEY and RAM regs at 0x400-0x47f
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x0400, 0x047f, read8_delegate(FUNC(a78_cart_slot_device::read_04xx),(a78_cart_slot_device*)m_cartslot), write8_delegate(FUNC(a78_cart_slot_device::write_04xx),(a78_cart_slot_device*)m_cartslot));
|
||||
break;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user