diff options
Diffstat (limited to 'src/devices/bus/pet/hsg.c')
-rw-r--r-- | src/devices/bus/pet/hsg.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/src/devices/bus/pet/hsg.c b/src/devices/bus/pet/hsg.c new file mode 100644 index 00000000000..5f2d7d1df9d --- /dev/null +++ b/src/devices/bus/pet/hsg.c @@ -0,0 +1,258 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + CBM 8000 High Speed Graphics (324402-01) card emulation + +**********************************************************************/ + +/* + + TODO: + + http://www.6502.org/users/sjgray/computer/hsg/index.html + + - version A (EF9365, 512x512 interlaced, 1 page) + - version B (EF9366, 512x256 non-interlaced, 2 pages) + +*/ + +#include "hsg.h" + + + +//************************************************************************** +// MACROS/CONSTANTS +//************************************************************************** + +#define EF9365_TAG "ef9365" +#define EF9366_TAG "ef9366" +#define SCREEN_TAG "screen" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type CBM8000_HSG_A = &device_creator<cbm8000_hsg_a_t>; +const device_type CBM8000_HSG_B = &device_creator<cbm8000_hsg_b_t>; + + +//------------------------------------------------- +// ROM( cbm8000_hsg ) +//------------------------------------------------- + +ROM_START( cbm8000_hsg ) + ROM_REGION( 0x1000, "9000", 0 ) + ROM_LOAD( "pet_hsg-ud12 on 8032 9000 (2532).bin", 0x0000, 0x1000, CRC(d651bf72) SHA1(d3d68228a5a8ec73fb39be860c00edb0d21bd1a9) ) + + ROM_REGION( 0x1000, "a000", 0 ) + ROM_LOAD( "324381-01 rev b sw graphi", 0x0000, 0x1000, CRC(c8e3bff9) SHA1(12ed3176ddd632f52e91082ab574adcba2149684) ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *cbm8000_hsg_t::device_rom_region() const +{ + return ROM_NAME( cbm8000_hsg ); +} + + +//------------------------------------------------- +// screen_update - +//------------------------------------------------- + +UINT32 cbm8000_hsg_t::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + return 0; +} + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( cbm8000_hsg_a ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( cbm8000_hsg_a ) + MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) + MCFG_SCREEN_UPDATE_DEVICE(DEVICE_SELF, cbm8000_hsg_t, screen_update) + MCFG_SCREEN_SIZE(512, 512) + MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 512-1) + MCFG_SCREEN_REFRESH_RATE(25) + MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") + + //MCFG_DEVICE_ADD(EF9365_TAG, EF9365, 0) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( cbm8000_hsg_b ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( cbm8000_hsg_b ) + MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) + MCFG_SCREEN_UPDATE_DEVICE(DEVICE_SELF, cbm8000_hsg_t, screen_update) + MCFG_SCREEN_SIZE(512, 256) + MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") + + //MCFG_DEVICE_ADD(EF9366_TAG, EF9366, 0) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor cbm8000_hsg_a_t::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( cbm8000_hsg_a ); +} + +machine_config_constructor cbm8000_hsg_b_t::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( cbm8000_hsg_b ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// cbm8000_hsg_t - constructor +//------------------------------------------------- + +cbm8000_hsg_t::cbm8000_hsg_t(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_pet_expansion_card_interface(mconfig, *this), + m_9000(*this, "9000"), + m_a000(*this, "a000") +{ +} + +cbm8000_hsg_a_t::cbm8000_hsg_a_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + cbm8000_hsg_t(mconfig, CBM8000_HSG_A, "CBM 8000 High Speed Graphics (A)", tag, owner, clock, "cbm8000_hsg_a", __FILE__) + //m_gdc(*this, EF9365_TAG) +{ +} + +cbm8000_hsg_b_t::cbm8000_hsg_b_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + cbm8000_hsg_t(mconfig, CBM8000_HSG_B, "CBM 8000 High Speed Graphics (B)", tag, owner, clock, "cbm8000_hsg_b", __FILE__) + //m_gdc(*this, EF9366_TAG) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void cbm8000_hsg_t::device_start() +{ +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void cbm8000_hsg_t::device_reset() +{ + //m_gdc->reset(); +} + + +//------------------------------------------------- +// pet_norom_r - NO ROM read +//------------------------------------------------- + +int cbm8000_hsg_t::pet_norom_r(address_space &space, offs_t offset, int sel) +{ + return !(offset >= 0x9000 && offset < 0xaf00); +} + + +//------------------------------------------------- +// pet_bd_r - buffered data read +//------------------------------------------------- + +UINT8 cbm8000_hsg_t::pet_bd_r(address_space &space, offs_t offset, UINT8 data, int &sel) +{ + switch (sel) + { + case pet_expansion_slot_device::SEL9: + data = m_9000->base()[offset & 0xfff]; + break; + + case pet_expansion_slot_device::SELA: + if (offset < 0xaf00) + { + data = m_a000->base()[offset & 0xfff]; + } + else if (offset == 0xaf10) + { + /* + + bit description + + 0 light pen + 1 + 2 + 3 + 4 + 5 + 6 + 7 + + */ + } + else if (offset == 0xad30) + { + // hard copy + } + else if (offset >= 0xaf70 && offset < 0xaf80) + { + //data = m_gdc->data_r(space, offset & 0x0f); + } + break; + } + + return data; +} + + +//------------------------------------------------- +// pet_bd_w - buffered data write +//------------------------------------------------- + +void cbm8000_hsg_t::pet_bd_w(address_space &space, offs_t offset, UINT8 data, int &sel) +{ + if (offset == 0xaf00) + { + /* + + 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 >= 0xaf70 && offset < 0xaf80) + { + //m_gdc->data_w(space, offset & 0x0f, data); + } +} |