#include "includes/osi.h" /* Palette Initialization */ static PALETTE_INIT( osi630 ) { /* black and white */ palette_set_color_rgb(machine, 0, 0x00, 0x00, 0x00); // black palette_set_color_rgb(machine, 1, 0xff, 0xff, 0xff); // white /* color enabled */ palette_set_color_rgb(machine, 2, 0xff, 0xff, 0x00); // yellow palette_set_color_rgb(machine, 3, 0xff, 0x00, 0x00); // red palette_set_color_rgb(machine, 4, 0x00, 0xff, 0x00); // green palette_set_color_rgb(machine, 5, 0x00, 0x80, 0x00); // olive green palette_set_color_rgb(machine, 6, 0x00, 0x00, 0xff); // blue palette_set_color_rgb(machine, 7, 0xff, 0x00, 0xff); // purple palette_set_color_rgb(machine, 8, 0x00, 0x00, 0x80); // sky blue palette_set_color_rgb(machine, 9, 0x00, 0x00, 0x00); // black } /* Video Start */ void sb2m600_state::video_start() { UINT16 addr; /* randomize video memory contents */ for (addr = 0; addr < OSI600_VIDEORAM_SIZE; addr++) { m_video_ram[addr] = machine().rand() & 0xff; } /* randomize color memory contents */ if (m_color_ram) { for (addr = 0; addr < OSI630_COLORRAM_SIZE; addr++) { m_color_ram[addr] = machine().rand() & 0x0f; } } } /* Video Update */ UINT32 sb2m600_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int y, bit, sx; if (m_32) { for (y = 0; y < 256; y++) { UINT16 videoram_addr = (y >> 4) * 64; int line = (y >> 1) & 0x07; int x = 0; for (sx = 0; sx < 64; sx++) { UINT8 videoram_data = m_video_ram[videoram_addr]; UINT16 charrom_addr = ((videoram_data << 3) | line) & 0x7ff; UINT8 charrom_data = memregion("chargen")->base()[charrom_addr]; for (bit = 0; bit < 8; bit++) { int color = BIT(charrom_data, 7); if (m_coloren) { UINT8 colorram_data = m_color_ram[videoram_addr]; color = (color ^ BIT(colorram_data, 0)) ? (((colorram_data >> 1) & 0x07) + 2) : 0; } bitmap.pix16(y, x++) = color; charrom_data <<= 1; } videoram_addr++; } } } else { for (y = 0; y < 256; y++) { UINT16 videoram_addr = (y >> 3) * 32; int line = y & 0x07; int x = 0; for (sx = 0; sx < 32; sx++) { UINT8 videoram_data = m_video_ram[videoram_addr]; UINT16 charrom_addr = ((videoram_data << 3) | line) & 0x7ff; UINT8 charrom_data = memregion("chargen")->base()[charrom_addr]; for (bit = 0; bit < 8; bit++) { int color = BIT(charrom_data, 7); if (m_coloren) { UINT8 colorram_data = m_color_ram[videoram_addr]; color = (color ^ BIT(colorram_data, 0)) ? (((colorram_data >> 1) & 0x07) + 2) : 0; } bitmap.pix16(y, x++) = color; bitmap.pix16(y, x++) = color; charrom_data <<= 1; } videoram_addr++; } } } return 0; } UINT32 uk101_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int y, bit, sx; for (y = 0; y < 256; y++) { UINT16 videoram_addr = (y >> 4) * 64; int line = (y >> 1) & 0x07; int x = 0; for (sx = 0; sx < 64; sx++) { UINT8 videoram_data = m_video_ram[videoram_addr++]; UINT16 charrom_addr = ((videoram_data << 3) | line) & 0x7ff; UINT8 charrom_data = memregion("chargen")->base()[charrom_addr]; for (bit = 0; bit < 8; bit++) { bitmap.pix16(y, x) = BIT(charrom_data, 7); x++; charrom_data <<= 1; } } } return 0; } /* Machine Drivers */ MACHINE_CONFIG_FRAGMENT( osi600_video ) MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_REFRESH_RATE(X1/256/256) // 60 Hz MCFG_SCREEN_UPDATE_DRIVER(sb2m600_state, screen_update) MCFG_SCREEN_SIZE(64*8, 32*8) MCFG_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0, 32*8-1) MCFG_PALETTE_LENGTH(2) MCFG_PALETTE_INIT(black_and_white) MACHINE_CONFIG_END MACHINE_CONFIG_FRAGMENT( uk101_video ) MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_UPDATE_DRIVER(uk101_state, screen_update) MCFG_SCREEN_SIZE(64*8, 16*16) MCFG_SCREEN_VISIBLE_AREA(0, 64*8-1, 0, 16*16-1) MCFG_PALETTE_LENGTH(2) MCFG_PALETTE_INIT(black_and_white) MACHINE_CONFIG_END MACHINE_CONFIG_FRAGMENT( osi630_video ) MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_REFRESH_RATE(X1/256/256) // 60 Hz MCFG_SCREEN_UPDATE_DRIVER(sb2m600_state, screen_update) MCFG_SCREEN_SIZE(64*8, 16*16) MCFG_SCREEN_VISIBLE_AREA(0, 64*8-1, 0, 16*16-1) MCFG_PALETTE_LENGTH(8+2) MCFG_PALETTE_INIT(osi630) MACHINE_CONFIG_END