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(MESS) cbm2: Added skeleton for CBM-II high resolution cartridge. (nw)
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Curt Coder
parent
ac17372427
commit
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7 changed files with 290 additions and 0 deletions
2
.gitattributes
vendored
2
.gitattributes
vendored
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@ -6622,6 +6622,8 @@ src/mess/machine/c65.c svneol=native#text/plain
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src/mess/machine/c8280.c svneol=native#text/plain
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src/mess/machine/c8280.h svneol=native#text/plain
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src/mess/machine/cbm.c svneol=native#text/plain
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src/mess/machine/cbm2_graphic.c svneol=native#text/plain
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src/mess/machine/cbm2_graphic.h svneol=native#text/plain
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src/mess/machine/cbm2_std.c svneol=native#text/plain
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src/mess/machine/cbm2_std.h svneol=native#text/plain
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src/mess/machine/cbm2exp.c svneol=native#text/plain
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@ -88,4 +88,18 @@
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</part>
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</software>
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<software name="graphic">
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<description>High Resolution Graphics</description>
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<year>198?</year>
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<publisher>Commodore</publisher>
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<part name="cart" interface="cbm2_cart">
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<feature name="slot" value="graphic" />
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<dataarea name="bank3" size="0x2000">
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<rom name="324688-01.bin" size="0x2000" crc="863e9ef8" sha1="d75ffa97b2dd4e1baefe4acaa130daae866ab0e8" offset="0" />
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</dataarea>
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</part>
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</software>
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</softwarelist>
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206
src/mess/machine/cbm2_graphic.c
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206
src/mess/machine/cbm2_graphic.c
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@ -0,0 +1,206 @@
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/**********************************************************************
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CBM 500/600/700 High Resolution Graphics cartridge emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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/*
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TODO:
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- version A (EF9365, 512x512 interlaced, 1 page)
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- version B (EF9366, 512x256 non-interlaced, 2 pages)
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*/
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#include "cbm2_graphic.h"
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//**************************************************************************
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// MACROS/CONSTANTS
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//**************************************************************************
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#define EF9365_TAG "ef9365"
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#define EF9366_TAG "ef9366"
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#define SCREEN_TAG "screen"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type CBM2_GRAPHIC = &device_creator<cbm2_graphic_cartridge_device>;
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//-------------------------------------------------
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// ef9345_interface gdp_intf
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//-------------------------------------------------
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static const ef9345_interface gdp_intf =
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{
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SCREEN_TAG
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};
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//-------------------------------------------------
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// MACHINE_CONFIG_FRAGMENT( cbm2_graphic_a )
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//-------------------------------------------------
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static MACHINE_CONFIG_FRAGMENT( cbm2_graphic_a )
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MCFG_SCREEN_ADD(SCREEN_TAG, RASTER)
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MCFG_SCREEN_UPDATE_DEVICE(EF9365_TAG, ef9345_device, screen_update)
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MCFG_SCREEN_SIZE(512, 512)
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MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 512-1)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
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MCFG_SCREEN_REFRESH_RATE(50)
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MCFG_EF9345_ADD(EF9365_TAG, gdp_intf)
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MACHINE_CONFIG_END
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//-------------------------------------------------
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// MACHINE_CONFIG_FRAGMENT( cbm2_graphic_b )
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//-------------------------------------------------
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static MACHINE_CONFIG_FRAGMENT( cbm2_graphic_b )
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MCFG_SCREEN_ADD(SCREEN_TAG, RASTER)
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MCFG_SCREEN_UPDATE_DEVICE(EF9366_TAG, ef9345_device, screen_update)
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MCFG_SCREEN_SIZE(512, 256)
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MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
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MCFG_SCREEN_REFRESH_RATE(50)
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MCFG_EF9345_ADD(EF9366_TAG, gdp_intf)
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MACHINE_CONFIG_END
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//-------------------------------------------------
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// machine_config_additions - device-specific
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// machine configurations
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//-------------------------------------------------
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machine_config_constructor cbm2_graphic_cartridge_device::device_mconfig_additions() const
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{
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switch (m_variant)
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{
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default: return MACHINE_CONFIG_NAME( cbm2_graphic_a );
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case TYPE_B: return MACHINE_CONFIG_NAME( cbm2_graphic_b );
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}
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// cbm2_graphic_cartridge_device - constructor
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//-------------------------------------------------
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cbm2_graphic_cartridge_device::cbm2_graphic_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, CBM2_GRAPHIC, "CBM 500/600/700 High Resolution Graphics", tag, owner, clock),
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device_cbm2_expansion_card_interface(mconfig, *this),
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m_gdc(*this, EF9365_TAG),
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m_variant(TYPE_A)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void cbm2_graphic_cartridge_device::device_start()
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{
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void cbm2_graphic_cartridge_device::device_reset()
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{
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}
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//-------------------------------------------------
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// cbm2_bd_r - cartridge data read
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//-------------------------------------------------
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UINT8 cbm2_graphic_cartridge_device::cbm2_bd_r(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3)
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{
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if (!csbank3)
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{
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if (offset < 0x7f80)
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{
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data = m_bank3[offset & m_bank1_mask];
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}
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else if (offset == 0x7f90)
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{
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/*
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bit description
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0 light pen
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1
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2
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3
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4
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5
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6
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7
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*/
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}
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else if (offset == 0x7fb0)
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{
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// hard copy
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}
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else if (offset >= 0x7ff0)
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{
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data = m_gdc->data_r(space, offset & 0x07);
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}
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}
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return data;
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}
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//-------------------------------------------------
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// cbm2_bd_w - cartridge data write
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//-------------------------------------------------
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void cbm2_graphic_cartridge_device::cbm2_bd_w(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3)
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{
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if (!csbank3)
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{
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if (offset == 0x7f80)
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{
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/*
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bit description
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0 hard copy (0=active)
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1 operating page select (version B)
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2
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3 read-modify-write (1=active)
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4 display switch (1=graphic)
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5 display page select (version B)
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6
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7
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*/
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}
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else if (offset >= 0x7ff0)
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{
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m_gdc->data_w(space, offset & 0x07, data);
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}
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}
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}
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65
src/mess/machine/cbm2_graphic.h
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65
src/mess/machine/cbm2_graphic.h
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@ -0,0 +1,65 @@
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/**********************************************************************
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CBM 500/600/700 High Resolution Graphics cartridge emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#pragma once
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#ifndef __CBM2_GRAPHIC__
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#define __CBM2_GRAPHIC__
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#include "emu.h"
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#include "machine/cbm2exp.h"
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#include "video/ef9345.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> cbm2_graphic_cartridge_device
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class cbm2_graphic_cartridge_device : public device_t,
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public device_cbm2_expansion_card_interface
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{
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public:
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// construction/destruction
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cbm2_graphic_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual machine_config_constructor device_mconfig_additions() const;
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protected:
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enum
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{
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TYPE_A,
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TYPE_B
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};
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// device-level overrides
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virtual void device_config_complete() { m_shortname = "cbm2_graphic"; }
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virtual void device_start();
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virtual void device_reset();
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// device_cbm2_expansion_card_interface overrides
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virtual UINT8 cbm2_bd_r(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3);
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virtual void cbm2_bd_w(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3);
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private:
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required_device<ef9345_device> m_gdc;
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int m_variant;
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};
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// device type definition
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extern const device_type CBM2_GRAPHIC;
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#endif
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@ -1045,6 +1045,7 @@ INPUT_PORTS_END
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SLOT_INTERFACE_START( cbm2_expansion_cards )
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SLOT_INTERFACE_INTERNAL("standard", CBM2_STD)
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SLOT_INTERFACE_INTERNAL("graphic", CBM2_GRAPHIC)
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SLOT_INTERFACE_END
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SLOT_INTERFACE_START( cbm_datassette_devices )
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@ -61,6 +61,7 @@
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#include "machine/c64_zaxxon.h"
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#include "machine/c128_comal80.h"
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#include "machine/cbm2_std.h"
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#include "machine/cbm2_graphic.h"
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#include "machine/c1541.h"
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#include "machine/c1551.h"
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#include "machine/c1571.h"
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@ -889,6 +889,7 @@ $(MESSOBJ)/cbm.a: \
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$(MESS_DRIVERS)/cbm2.o \
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$(MESS_MACHINE)/cbm2exp.o \
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$(MESS_MACHINE)/cbm2_std.o \
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$(MESS_MACHINE)/cbm2_graphic.o \
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$(MESS_DRIVERS)/c65.o \
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$(MESS_MACHINE)/c65.o \
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$(MESS_DRIVERS)/c128.o \
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