// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic /*************************************************************************** MC-80.xx by Miodrag Milanovic 15/05/2009 Initial implementation 12/05/2009 Skeleton driver. ****************************************************************************/ #include "includes/mc80.h" /*****************************************************************************/ /* Implementation for MC80.2x */ /*****************************************************************************/ IRQ_CALLBACK_MEMBER(mc80_state::mc8020_irq_callback) { return 0x00; } MACHINE_RESET_MEMBER(mc80_state,mc8020) { } WRITE_LINE_MEMBER( mc80_state::ctc_z0_w ) { } WRITE_LINE_MEMBER( mc80_state::ctc_z1_w ) { } WRITE_LINE_MEMBER(mc80_state::ctc_z2_w) { downcast(machine().device("z80ctc"))->trg0(state); downcast(machine().device("z80ctc"))->trg1(state); } READ8_MEMBER( mc80_state::mc80_port_b_r ) { return 0; } READ8_MEMBER( mc80_state::mc80_port_a_r ) { return 0; } WRITE8_MEMBER( mc80_state::mc80_port_a_w ) { } WRITE8_MEMBER( mc80_state::mc80_port_b_w ) { } /*****************************************************************************/ /* Implementation for MC80.3x */ /*****************************************************************************/ WRITE8_MEMBER( mc80_state::mc8030_zve_write_protect_w ) { } WRITE8_MEMBER( mc80_state::mc8030_vis_w ) { // reg C // 7 6 5 4 -- module // 3 - 0 left half, 1 right half // 2 1 0 // ===== // 0 0 0 - dark // 0 0 1 - light // 0 1 0 - in reg pixel // 0 1 1 - negate in reg pixel // 1 0 x - operation code in B reg // reg B // uint16_t addr = ((offset & 0xff00) >> 2) | ((offset & 0x08) << 2) | (data >> 3); static const uint8_t val[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }; int c = offset & 1; m_p_videoram[addr] = m_p_videoram[addr] | (val[data & 7]*c); } WRITE8_MEMBER( mc80_state::mc8030_eprom_prog_w ) { } IRQ_CALLBACK_MEMBER(mc80_state::mc8030_irq_callback ) { return 0x20; } MACHINE_RESET_MEMBER(mc80_state,mc8030) { } READ8_MEMBER( mc80_state::zve_port_a_r ) { return 0xff; } READ8_MEMBER( mc80_state::zve_port_b_r ) { return 0xff; } WRITE8_MEMBER( mc80_state::zve_port_a_w ) { } WRITE8_MEMBER( mc80_state::zve_port_b_w ) { } READ8_MEMBER( mc80_state::asp_port_a_r ) { return 0xff; } READ8_MEMBER( mc80_state::asp_port_b_r ) { return 0xff; } WRITE8_MEMBER( mc80_state::asp_port_a_w ) { } WRITE8_MEMBER( mc80_state::asp_port_b_w ) { }