diff options
Diffstat (limited to 'src/devices/bus/cbm2/hrg.c')
-rw-r--r-- | src/devices/bus/cbm2/hrg.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/devices/bus/cbm2/hrg.c b/src/devices/bus/cbm2/hrg.c new file mode 100644 index 00000000000..cb489ec359f --- /dev/null +++ b/src/devices/bus/cbm2/hrg.c @@ -0,0 +1,231 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + CBM 500/600/700 High Resolution Graphics cartridge emulation + +**********************************************************************/ + +/* + + TODO: + + http://www.wfking.de/hires.htm + + - version A (EF9365, 512x512 interlaced, 1 page) + - version B (EF9366, 512x256 non-interlaced, 2 pages) + +*/ + +#include "hrg.h" + + + +//************************************************************************** +// MACROS/CONSTANTS +//************************************************************************** + +#define EF9365_TAG "ef9365" +#define EF9366_TAG "ef9366" +#define SCREEN_TAG "screen" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type CBM2_HRG_A = &device_creator<cbm2_graphic_cartridge_a_device>; +const device_type CBM2_HRG_B = &device_creator<cbm2_graphic_cartridge_b_device>; + + +//------------------------------------------------- +// ROM( cbm2_hrg ) +//------------------------------------------------- + +ROM_START( cbm2_hrg ) + ROM_REGION( 0x2000, "bank3", 0 ) + ROM_LOAD( "324688-01 sw gr 600.bin", 0x0000, 0x2000, CRC(863e9ef8) SHA1(d75ffa97b2dd4e1baefe4acaa130daae866ab0e8) ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *cbm2_graphic_cartridge_device::device_rom_region() const +{ + return ROM_NAME( cbm2_hrg ); +} + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( cbm2_hrg_a ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( cbm2_hrg_a ) +/* MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) + MCFG_SCREEN_UPDATE_DEVICE(EF9365_TAG, ef9365_device, screen_update) + MCFG_SCREEN_SIZE(512, 512) + MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 512-1) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) + MCFG_SCREEN_REFRESH_RATE(50) + + MCFG_EF9365_ADD(EF9365_TAG, gdp_intf)*/ +MACHINE_CONFIG_END + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( cbm2_hrg_b ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( cbm2_hrg_b ) +/* MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) + MCFG_SCREEN_UPDATE_DEVICE(EF9366_TAG, ef9366_device, screen_update) + MCFG_SCREEN_SIZE(512, 256) + MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) + MCFG_SCREEN_REFRESH_RATE(50) + + MCFG_EF9366_ADD(EF9366_TAG, gdp_intf)*/ +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor cbm2_graphic_cartridge_a_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( cbm2_hrg_a ); +} + +machine_config_constructor cbm2_graphic_cartridge_b_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( cbm2_hrg_b ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// cbm2_graphic_cartridge_device - constructor +//------------------------------------------------- + +cbm2_graphic_cartridge_device::cbm2_graphic_cartridge_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) : + device_t(mconfig, type, name, tag, owner, clock, shortname, source), + device_cbm2_expansion_card_interface(mconfig, *this), + m_bank3(*this, "bank3") +{ +} + +cbm2_graphic_cartridge_a_device::cbm2_graphic_cartridge_a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + cbm2_graphic_cartridge_device(mconfig, CBM2_HRG_A, "CBM 500/600/700 High Resolution Graphics (A)", tag, owner, clock, "cbm2_hrga", __FILE__) + //m_gdc(*this, EF9365_TAG) +{ +} + +cbm2_graphic_cartridge_b_device::cbm2_graphic_cartridge_b_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + cbm2_graphic_cartridge_device(mconfig, CBM2_HRG_B, "CBM 500/600/700 High Resolution Graphics (B)", tag, owner, clock, "cbm2_hrgb", __FILE__) + //m_gdc(*this, EF9366_TAG) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void cbm2_graphic_cartridge_device::device_start() +{ +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void cbm2_graphic_cartridge_device::device_reset() +{ + //m_gdc->reset(); +} + + +//------------------------------------------------- +// cbm2_bd_r - cartridge data read +//------------------------------------------------- + +UINT8 cbm2_graphic_cartridge_device::cbm2_bd_r(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3) +{ + if (!csbank3) + { + if (offset < 0x7f80) + { + data = m_bank3->base()[offset & 0x1fff]; + } + else if (offset == 0x7f90) + { + /* + + bit description + + 0 light pen + 1 + 2 + 3 + 4 + 5 + 6 + 7 + + */ + } + else if (offset == 0x7fb0) + { + // hard copy + } + else if (offset >= 0x7ff0) + { + //data = m_gdc->data_r(space, offset & 0x07); + } + } + + return data; +} + + +//------------------------------------------------- +// cbm2_bd_w - cartridge data write +//------------------------------------------------- + +void cbm2_graphic_cartridge_device::cbm2_bd_w(address_space &space, offs_t offset, UINT8 data, int csbank1, int csbank2, int csbank3) +{ + if (!csbank3) + { + if (offset == 0x7f80) + { + /* + + bit description + + 0 hard copy (0=active) + 1 operating page select (version B) + 2 + 3 read-modify-write (1=active) + 4 display switch (1=graphic) + 5 display page select (version B) + 6 + 7 + + */ + } + else if (offset >= 0x7ff0) + { + //m_gdc->data_w(space, offset & 0x07, data); + } + } +} |