diff options
Diffstat (limited to 'src/mame/drivers/ncd88k.cpp')
-rw-r--r-- | src/mame/drivers/ncd88k.cpp | 172 |
1 files changed, 166 insertions, 6 deletions
diff --git a/src/mame/drivers/ncd88k.cpp b/src/mame/drivers/ncd88k.cpp index 2673df0928d..11716f6c30f 100644 --- a/src/mame/drivers/ncd88k.cpp +++ b/src/mame/drivers/ncd88k.cpp @@ -5,10 +5,32 @@ Skeleton driver for MC88100-based NCD X terminals. ****************************************************************************/ +/* + * WIP notes + * + * 88k "base" (19c, 19g, 17cr, 19cp) + * - https://web-docs.gsi.de/~kraemer/COLLECTION/ftp.ncd.com/pub/ncd/Archive/NCD-Articles/NCD_X_Terminals/Memory_specs/NCD_88k_family_memory_specs + * + * MCX + * - 2MB code and 4MB data memory on motherboard + * - J10 SIMM slot for code, J11/J12 for data + * - Code memory can be added as 256Kx32, 512Kx32, 1Mx32, 2Mx32, 4Mx32, + * or 8Mx32 SIMMs. Data memory can be added as 1Mx32, 2Mx32, 4Mx32, + * or 8Mx32 SIMMs. + * - 256Kx32 and 512Kx32 SIMMs are only supported as code memory + * + */ #include "emu.h" #include "cpu/m88000/m88000.h" #include "machine/mc68681.h" +#include "machine/am79c90.h" +#include "machine/eepromser.h" + +#include "bus/rs232/rs232.h" + +#include "video/bt45x.h" +#include "video/bt47x.h" #include "screen.h" class ncd88k_state : public driver_device @@ -18,6 +40,8 @@ public: : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_screen(*this, "screen") + , m_ramdac(*this, "ramdac") + , m_vram(*this, "vram") { } @@ -31,27 +55,50 @@ private: required_device<cpu_device> m_maincpu; required_device<screen_device> m_screen; + required_device<bt458_device> m_ramdac; + + required_shared_ptr<u32> m_vram; }; u32 ncd88k_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { + u32 *pixel_pointer = m_vram; + + for (int y = screen.visible_area().min_y; y <= screen.visible_area().max_y; y++) + { + for (int x = screen.visible_area().min_x; x <= screen.visible_area().max_x; x += 4) + { + u32 const pixel_data = *pixel_pointer++; + + bitmap.pix(y, x + 0) = m_ramdac->pen_color(u8(pixel_data >> 24)); + bitmap.pix(y, x + 1) = m_ramdac->pen_color(u8(pixel_data >> 16)); + bitmap.pix(y, x + 2) = m_ramdac->pen_color(u8(pixel_data >> 8)); + bitmap.pix(y, x + 3) = m_ramdac->pen_color(u8(pixel_data >> 0)); + } + + // compensate by 2048 - 1280 pixels per line + pixel_pointer += 0xc0; + } + return 0; } void ncd88k_state::code_map(address_map &map) { map(0x00000000, 0x0001cfff).rom().region("program", 0); - map(0x04000000, 0x07ffffff).ram().share("mainram"); + map(0x04000000, 0x07ffffff).ram().share("coderam"); } void ncd88k_state::data_map(address_map &map) { map(0x00000000, 0x0001cfff).rom().region("program", 0); map(0x01000000, 0x0100003f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask32(0xff000000); - map(0x01400000, 0x01400007).nopw(); // RAMDAC? - map(0x04000000, 0x07ffffff).ram().share("mainram"); - map(0x08000000, 0x0803ffff).ram(); - map(0x0e000000, 0x0e1fffff).ram(); + map(0x01400000, 0x0140001f).m(m_ramdac, FUNC(bt458_device::map)).umask32(0xff000000); + + map(0x04000000, 0x07ffffff).ram().share("coderam"); + map(0x08000000, 0x0d03ffff).ram().share("dataram"); + + map(0x0e000000, 0x0e1fffff).ram().share("vram"); } static INPUT_PORTS_START(ncd19c) @@ -65,6 +112,8 @@ void ncd88k_state::ncd19c(machine_config &config) SCN2681(config, "duart", 3'686'400); + BT458(config, m_ramdac, 0); + SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_raw(125'000'000, 1680, 0, 1280, 1063, 0, 1024); // 74.4 kHz horizontal, 70 Hz vertical m_screen->set_screen_update(FUNC(ncd88k_state::screen_update)); @@ -77,4 +126,115 @@ ROM_START(ncd19c) ROM_LOAD16_BYTE("ncd19c-o.rom", 0x0001, 0xb000, CRC(dfd9be7c) SHA1(2e99a325b039f8c3bb89833cd1940e6737b64d79) BAD_DUMP) ROM_END -COMP(1990, ncd19c, 0, 0, ncd19c, ncd19c, ncd88k_state, empty_init, "Network Computing Devices", "NCD19c", MACHINE_IS_SKELETON) +class ncdmcx_state : public driver_device +{ +public: + ncdmcx_state(machine_config const &mconfig, device_type type, char const *tag) + : driver_device(mconfig, type, tag) + , m_cpu(*this, "cpu") + , m_eeprom(*this, "eeprom") + , m_lance(*this, "lance") + , m_duart(*this, "duart") + , m_ramdac(*this, "ramdac") + , m_screen(*this, "screen") + , m_vram(*this, "vram") + { + } + + void ncdmcx(machine_config &config); + +private: + u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, rectangle const &cliprect); + + void code_map(address_map &map); + void data_map(address_map &map); + + required_device<cpu_device> m_cpu; + required_device<eeprom_serial_93cxx_device> m_eeprom; + required_device<am79c90_device> m_lance; + required_device<scn2681_device> m_duart; + required_device<bt477_device> m_ramdac; + required_device<screen_device> m_screen; + + required_shared_ptr<u32> m_vram; +}; + +u32 ncdmcx_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, rectangle const &cliprect) +{ + u32 *pixel_pointer = m_vram; + + for (int y = screen.visible_area().min_y; y <= screen.visible_area().max_y; y++) + { + for (int x = screen.visible_area().min_x; x <= screen.visible_area().max_x; x += 4) + { + u32 const pixel_data = *pixel_pointer++; + + bitmap.pix(y, x + 0) = m_ramdac->pen_color(u8(pixel_data >> 24)); + bitmap.pix(y, x + 1) = m_ramdac->pen_color(u8(pixel_data >> 16)); + bitmap.pix(y, x + 2) = m_ramdac->pen_color(u8(pixel_data >> 8)); + bitmap.pix(y, x + 3) = m_ramdac->pen_color(u8(pixel_data >> 0)); + } + + // compensate by 2048 - 1280 pixels per line + pixel_pointer += 0xc0; + } + + return 0; +} + +void ncdmcx_state::ncdmcx(machine_config &config) +{ + MC88100(config, m_cpu, 80_MHz_XTAL / 4); + m_cpu->set_addrmap(AS_PROGRAM, &ncdmcx_state::code_map); + m_cpu->set_addrmap(AS_DATA, &ncdmcx_state::data_map); + + // CAT35C104P 256x16 or 512x8 4K-Bit SERIAL E2PROM + EEPROM_93C66_8BIT(config, m_eeprom); + + // ICD2061ASC-1 + + // 4100004 + AM79C90(config, m_lance, 20_MHz_XTAL); + + SCN2681(config, m_duart, 3'686'400); + + // ATT20C497-11 + BT477(config, m_ramdac, 125'000'000); + + SCREEN(config, m_screen, SCREEN_TYPE_RASTER); + m_screen->set_raw(125'000'000, 1680, 0, 1280, 1063, 0, 1024); // 74.4 kHz horizontal, 70 Hz vertical + m_screen->set_screen_update(FUNC(ncdmcx_state::screen_update)); +} + +void ncdmcx_state::code_map(address_map &map) +{ + map(0x00000000, 0x0003ffff).rom().region("program", 0); + + map(0x04000000, 0x07ffffff).ram().share("coderam"); +} + +void ncdmcx_state::data_map(address_map &map) +{ + map(0x00000000, 0x0003ffff).rom().region("program", 0); + + map(0x01000000, 0x0100003f).rw(m_duart, FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask32(0xff000000); + map(0x01400000, 0x0140001f).m(m_ramdac, FUNC(bt477_device::map)).umask32(0xff000000); + + // bit 0 -> icd2061a clock + // bit 1 -> icd2016a data + map(0x01580000, 0x01580003).nopw(); + + map(0x04000000, 0x07ffffff).ram().share("coderam"); // maximum 64M + map(0x08000000, 0x0dffffff).ram().share("dataram"); // maximum 96M + + map(0x0e000000, 0x0e3fffff).ram().share("vram"); +} + +ROM_START(ncdmcx) + ROM_REGION32_BE(0x40000, "program", 0) + ROM_LOAD16_BYTE("ncd88k_mcx_bm.u3", 0x0000, 0x20000, CRC(70305680) SHA1(b10b250fe319e823cff28ba7b449b0a40755f5a2)) + ROM_LOAD16_BYTE("ncd88k_mcx_bm.u14", 0x0001, 0x20000, CRC(fc066464) SHA1(fa894de56b77bd4bc619040a2cf3a0d260914727)) +ROM_END + +COMP(1990, ncd19c, 0, 0, ncd19c, ncd19c, ncd88k_state, empty_init, "Network Computing Devices", "19c", MACHINE_IS_SKELETON) +COMP(1990, ncdmcx, 0, 0, ncdmcx, 0, ncdmcx_state, empty_init, "Network Computing Devices", "MCX", MACHINE_IS_SKELETON) |