// license:BSD-3-Clause // copyright-holders:Nathan Woods,R. Belmont /********************************************************************* apple2gs.c Apple IIgs code Apple IIgs specific softswitches: C019 - RDVBLBAR bits 7 - set during vblank (when at scanline 192 or higher) C022 - TBCOLOR bits 7-4 - text foreground color bits 3-0 - text background color C023 - VGCINT bit 7 - set for interrupt generated by VGC bit 6 - set during one second interrupt bit 5 - set during scanline interrupt bit 4 - set during external interrupt bit 3 - ??? bit 2 - set for interrupt every second bit 1 - set for scanline interrupt bit 0 - set for external interrupt C025 - KEYMODREG (comes from ?) bit 7 - option key pressed bit 6 - command key presssed bit 5 - modified latch bit 4 - keypad key pressed bit 3 - repeating bit 2 - caps lock latched bit 1 - control key pressed bit 0 - shift key pressed C027 - KMSTATUS (GLU system status) bit 7 - set if mouse register full bit 6 - mouse interupt enable flag bit 5 - set if data register full bit 4 - data interrupt enabled bit 3 - set if key data full bit 2 - key data interurpt enabled bit 1 - clear if horizontal mouse data, set if vertical bit 0 - command register full C029 - NEWVIDEO bit 7 - 1 for Super Hi-Res mode, 0 for old Apple II video modes bit 6 - 1 to enable memory linearization (2000-9D00 in banks 01/E1), 0 for physical layout bit 5 - 1 to display double hi-res mode in monochrome, 0 for color bit 4 - ??? bit 3 - ??? bit 2 - ??? bit 1 - ??? bit 0 - ??? C02D - SLTROMSEL C031 - DISKREG bit 7 - set to select head on 3.5" drive bit 6 - set to enable 3.5" drive, clear to enable 5.25" drive C035 - SHADOW bit 7 - ??? bit 6 - set to inhibit I/O and LC operations ($C000-$FFFF) bit 5 - ??? bit 4 - set to inhibit shadowing aux hires page bit 3 - set to inhibit shadowing super hires video bit 2 - set to inhibit shadowing hires page 2 bit 1 - set to inhibit shadowing hires page 2 bit 0 - set to inhibit shadowing text pages C036 - CYAREG bit 7 - clear for slow speed, set for hi speed bit 6 - ??? bit 5 - ??? bit 4 - shadow in all RAM banks bit 3 - slot 7 motor on bit 2 - slot 6 motor on bit 1 - slot 5 motor on bit 0 - slot 4 motor on C041 - INTEN bit 4 - set to enable quarter second interrupts bit 3 - set to enable VBL interrupts bit 2 - set to enable Mega II mouse switch interrupts bit 1 - set to enable Mega II mouse movement interrupts bit 0 - set to enable Mega II mouse mouse operation C046 - DIAGTYPE/INTFLAG bit 7 - set if mouse button currently down bit 6 - set if mouse button down on last read bit 5 - set for AN3 bit 4 - set if currently in quarter second interrupt bit 3 - set if currently in VBL interrupt bit 2 - set if currently in Mega II mouse switch interrupt bit 1 - set if currently in Mega II mouse movement interrupt bit 0 - set if system IRQ line asserted C047 - CLRVBLINT C068 - STATEREG bit 7 - ALTZP status bit 6 - PAGE2 status bit 5 - RAMRD status bit 4 - RAMWRT status bit 3 - !LCRAM status (inverted) bit 2 - LCRAM2 status bit 1 - ROMBANK status (unimplemented) bit 0 - INTCXROM status *********************************************************************/ #include "emu.h" #include "includes/apple2gs.h" #include "includes/apple2.h" #include "machine/applefdc.h" #include "machine/sonydriv.h" #include "machine/8530scc.h" #include "imagedev/flopdrv.h" #include "cpu/g65816/g65816.h" #include "sound/es5503.h" #include "machine/ram.h" #include "debugger.h" #define LOG_C0XX 0 #define LOG_ADB 0 #define LOG_IRQ 0 /* ----------------------------------------------------------------------- * Apple IIgs clock * ----------------------------------------------------------------------- */ void apple2gs_state::process_clock() { UINT8 operation; seconds_t current_interval; /* update clock_curtime */ current_interval = machine().time().seconds(); m_clock_curtime += current_interval - m_clock_curtime_interval; m_clock_curtime_interval = current_interval; switch(m_clock_mode) { case CLOCKMODE_IDLE: m_clock_read = (m_clock_data >> 7); m_clock_reg1 = (m_clock_data >> 2) & 0x03; operation = (m_clock_data >> 4) & 0x07; if ((m_clock_data & 0x40) == 0x00) { switch(operation) { case 0x00: /* read/write seconds register */ m_clock_mode = CLOCKMODE_TIME; break; case 0x03: /* internal registers */ if (m_clock_reg1 & 0x02) { m_clock_mode = CLOCKMODE_BRAM2; m_clock_reg1 = (m_clock_data & 0x07) << 5; } else { m_clock_mode = CLOCKMODE_INTERNALREGS; } break; default: //fatalerror("NYI\n"); break; } } break; case CLOCKMODE_BRAM1: if (m_clock_read) m_clock_data = m_clock_bram[m_clock_reg1]; else m_clock_bram[m_clock_reg1] = m_clock_data; m_clock_mode = CLOCKMODE_IDLE; break; case CLOCKMODE_BRAM2: m_clock_reg1 |= (m_clock_data >> 2) & 0x1F; m_clock_mode = CLOCKMODE_BRAM1; break; case CLOCKMODE_INTERNALREGS: switch (m_clock_reg1) { case 0x00: /* test register */ break; case 0x01: /* write protect register */ break; } m_clock_mode = CLOCKMODE_IDLE; break; case CLOCKMODE_TIME: if (m_clock_data & 0x40) { m_clock_data = m_clock_curtime >> (m_clock_reg1 * 8); } else { m_clock_curtime &= ~(0xFF << (m_clock_reg1 * 8)); m_clock_curtime |= m_clock_data << (m_clock_reg1 * 8); } m_clock_mode = CLOCKMODE_IDLE; break; default: //fatalerror("NYI\n"); break; } } /* ----------------------------------------------------------------------- * Interrupts * ----------------------------------------------------------------------- */ const char *apple2gs_state::apple2gs_irq_name(UINT16 irq_mask) { switch(irq_mask) { case IRQ_KBD_SRQ: return "IRQ_KBD_SRQ"; case IRQ_ADB_DATA: return "IRQ_ADB_DATA"; case IRQ_ADB_MOUSE: return "IRQ_ADB_MOUSE"; case IRQ_VGC_SCANLINE: return "IRQ_VGC_SCANLINE"; case IRQ_VGC_SECOND: return "IRQ_VGC_SECOND"; case IRQ_INTEN_QSECOND: return "IRQ_INTEN_QSECOND"; case IRQ_INTEN_VBL: return "IRQ_INTEN_VBL"; case IRQ_DOC: return "IRQ_DOC"; case IRQ_SLOT: return "IRQ_SLOT"; } return nullptr; } void apple2gs_state::apple2gs_add_irq(UINT16 irq_mask) { if ((m_pending_irqs & irq_mask) == 0x00) { if (LOG_IRQ) logerror("apple2gs_add_irq(): adding %s\n", apple2gs_irq_name(irq_mask)); m_pending_irqs |= irq_mask; m_maincpu->set_input_line(G65816_LINE_IRQ, m_pending_irqs ? ASSERT_LINE : CLEAR_LINE); } } void apple2gs_state::apple2gs_remove_irq(UINT16 irq_mask) { if (m_pending_irqs & irq_mask) { if (LOG_IRQ) logerror("apple2gs_remove_irq(): removing %s\n", apple2gs_irq_name(irq_mask)); m_pending_irqs &= ~irq_mask; m_maincpu->set_input_line(G65816_LINE_IRQ, m_pending_irqs ? ASSERT_LINE : CLEAR_LINE); } } WRITE_LINE_MEMBER(apple2gs_state::apple2gs_doc_irq) { if (state) { apple2gs_add_irq(IRQ_DOC); } else { apple2gs_remove_irq(IRQ_DOC); } } /* Clock interrupt */ TIMER_CALLBACK_MEMBER(apple2gs_state::apple2gs_clock_tick) { if ((m_vgcint & 0x04) && !(m_vgcint & 0x40)) { m_vgcint |= 0xc0; apple2gs_add_irq(IRQ_VGC_SECOND); } } /* Quarter-second interrupt */ TIMER_CALLBACK_MEMBER(apple2gs_state::apple2gs_qsecond_tick) { if ((m_inten & 0x10) && !(m_intflag & 0x10)) { m_intflag |= 0x10; apple2gs_add_irq(IRQ_INTEN_QSECOND); } } /* ----------------------------------------------------------------------- * ADB * ----------------------------------------------------------------------- */ #if !RUN_ADB_MICRO UINT8 apple2gs_state::adb_read_memory(UINT32 address) { if (address < ARRAY_LENGTH(m_adb_memory)) return m_adb_memory[address]; else return 0x00; } void apple2gs_state::adb_write_memory(UINT32 address, UINT8 data) { if (address < ARRAY_LENGTH(m_adb_memory)) m_adb_memory[address] = data; } void apple2gs_state::adb_set_mode(UINT8 mode) { m_adb_mode = mode; } void apple2gs_state::adb_set_config(UINT8 b1, UINT8 b2, UINT8 b3) { /* ignore for now */ } void apple2gs_state::adb_post_response(const UINT8 *bytes, size_t length) { assert(length < ARRAY_LENGTH(m_adb_response_bytes)); memcpy(m_adb_response_bytes, bytes, length); m_adb_state = ADBSTATE_INRESPONSE; m_adb_response_length = length; m_adb_response_pos = 0; } void apple2gs_state::adb_post_response_1(UINT8 b) { adb_post_response(&b, 1); } void apple2gs_state::adb_post_response_2(UINT8 b1, UINT8 b2) { UINT8 b[2]; b[0] = b1; b[1] = b2; adb_post_response(b, 2); } void apple2gs_state::adb_do_command() { int device; UINT32 address; UINT8 val; m_adb_state = ADBSTATE_IDLE; if (LOG_ADB) logerror("adb_do_command(): adb_command=0x%02x\n", m_adb_command); switch(m_adb_command) { case 0x00: /* ??? */ break; case 0x03: /* flush keyboard buffer */ break; case 0x04: /* set modes */ adb_set_mode(m_adb_mode | m_adb_command_bytes[0]); break; case 0x05: /* clear modes */ adb_set_mode(m_adb_mode & ~m_adb_command_bytes[0]); break; case 0x06: /* set config */ adb_set_config(m_adb_command_bytes[0], m_adb_command_bytes[1], m_adb_command_bytes[2]); break; case 0x07: /* synchronize */ adb_set_mode(m_adb_command_bytes[0]); adb_set_config(m_adb_command_bytes[1], m_adb_command_bytes[2], m_adb_command_bytes[3]); break; case 0x08: /* write memory */ address = m_adb_command_bytes[0]; val = m_adb_command_bytes[1]; adb_write_memory(address, val); break; case 0x09: /* read memory */ address = (m_adb_command_bytes[1] << 8) | m_adb_command_bytes[0]; adb_post_response_1(adb_read_memory(address)); break; case 0x0a: /* ??? */ case 0x0b: /* ??? */ break; case 0x0d: /* get version */ adb_post_response_1(0x06); break; case 0x0e: /* read available charsets */ adb_post_response_2(0x01, 0x00); break; case 0x0f: /* read available layouts */ adb_post_response_2(0x01, 0x00); break; case 0x12: /* mystery command 0x12 */ case 0x13: /* mystery command 0x13 */ break; case 0xb0: case 0xb1: case 0xb2: case 0xb3: case 0xb4: case 0xb5: case 0xb6: case 0xb7: case 0xb8: case 0xb9: case 0xba: case 0xbb: case 0xbc: case 0xbd: case 0xbe: case 0xbf: /* send data to device */ device = m_adb_command & 0x0f; if (device == m_adb_address_keyboard) { } else if (device == m_adb_address_mouse) { } break; case 0xf2: break; default: fatalerror("ADB command 0x%02x unimplemented\n", m_adb_command); } m_adb_kmstatus |= 0x20; } UINT8 apple2gs_state::adb_read_datareg() { UINT8 result; switch(m_adb_state) { case ADBSTATE_INRESPONSE: result = m_adb_response_bytes[m_adb_response_pos++]; if (m_adb_response_pos >= m_adb_response_length) { m_adb_state = ADBSTATE_IDLE; m_adb_latent_result = result; m_adb_kmstatus &= ~0x20; } break; default: result = 0; //m_adb_latent_result & 0x7f; break; } if (LOG_ADB) logerror("adb_read_datareg(): result=0x%02x\n", result); return result; } void apple2gs_state::adb_write_datareg(UINT8 data) { if (LOG_ADB) logerror("adb_write_datareg(): data=0x%02x\n", data); switch(m_adb_state) { case ADBSTATE_IDLE: m_adb_command = data; m_adb_command_length = 0; m_adb_command_pos = 0; // printf("ADB command %02x\n", data); switch(data) { case 0x00: /* ??? */ case 0x01: /* abort */ /* do nothing for now */ break; case 0x03: /* flush keyboard buffer */ m_adb_command_length = 0; break; case 0x04: /* set modes */ case 0x05: /* clear modes */ m_adb_command_length = 1; break; case 0x06: /* set config */ m_adb_command_length = 3; break; case 0x07: /* synchronize */ if (m_is_rom3) m_adb_command_length = 8; // ROM 3 has 8 bytes: mode byte, 3 config bytes, kbd/mouse params, disk eject options else m_adb_command_length = 4; // ROM 0/1 has 4 bytes sync break; case 0x08: /* write memory */ case 0x09: /* read memory */ m_adb_command_length = 2; break; case 0x0a: /* ??? */ case 0x0b: /* ??? */ m_adb_command_length = 0; break; case 0x0d: /* get version */ m_adb_command_length = 0; break; case 0x0e: /* read available charsets */ m_adb_command_length = 0; m_adb_state = ADBSTATE_INCOMMAND; /* HACK */ break; case 0x0f: /* read available layouts */ m_adb_command_length = 0; m_adb_state = ADBSTATE_INCOMMAND; /* HACK */ break; case 0x12: /* mystery command 0x12 */ case 0x13: /* mystery command 0x13 */ m_adb_command_length = 2; break; case 0x70: /* disable SRQ device 0 */ case 0x71: /* disable SRQ device 1 */ case 0x72: /* disable SRQ device 2 */ case 0x73: /* disable SRQ device 3 */ /* ignore for now */ break; case 0xb0: case 0xb1: case 0xb2: case 0xb3: case 0xb4: case 0xb5: case 0xb6: case 0xb7: case 0xb8: case 0xb9: case 0xba: case 0xbb: case 0xbc: case 0xbd: case 0xbe: case 0xbf: /* send data to device */ m_adb_command_length = 2; break; case 0xf2: break; default: fatalerror("ADB command 0x%02x unimplemented\n", data); } if (m_adb_command_length > 0) { m_adb_state = ADBSTATE_INCOMMAND; if (LOG_ADB) logerror("adb_write_datareg(): in command length %u\n", (unsigned) m_adb_command_length); } break; case ADBSTATE_INCOMMAND: assert(m_adb_command_pos < ARRAY_LENGTH(m_adb_command_bytes)); // printf("ADB param %02x\n", data); m_adb_command_bytes[m_adb_command_pos++] = data; break; case ADBSTATE_INRESPONSE: m_adb_state = ADBSTATE_IDLE; break; } /* do command if necessary */ if ((m_adb_state == ADBSTATE_INCOMMAND) && (m_adb_command_pos >= m_adb_command_length)) adb_do_command(); } // real rom 3 h/w reads 0x90 when idle, 0x98 when key pressed // current MESS reads back 0xb0 when idle UINT8 apple2gs_state::adb_read_kmstatus() { return m_adb_kmstatus; } void apple2gs_state::adb_write_kmstatus(UINT8 data) { m_adb_kmstatus &= ~0x54; m_adb_kmstatus |= data & 0x54; } UINT8 apple2gs_state::adb_read_mousedata() { UINT8 result = 0x00; UINT8 absolute; INT8 delta; if (m_adb_kmstatus & 0x80) // mouse register full { if (m_adb_kmstatus & 0x02) // H/V mouse data select { absolute = m_mouse_y; delta = m_mouse_dy; m_adb_kmstatus &= ~0x82; apple2gs_remove_irq(IRQ_ADB_MOUSE); } else { absolute = m_mouse_x; delta = m_mouse_dx; m_adb_kmstatus |= 0x02; } if (delta > 63) delta = 63; else if (delta < -64) delta = -64; result = (absolute & 0x80) | (delta & 0x7F); } return result; } INT8 apple2gs_state::seven_bit_diff(UINT8 v1, UINT8 v2) { v1 -= v2; if (v1 & 0x40) v1 |= 0x80; else v1 &= ~0x80; return v1; } void apple2gs_state::adb_check_mouse() { UINT8 new_mouse_x, new_mouse_y; /* read mouse values */ if ((m_adb_kmstatus & 0x80) == 0x00) { new_mouse_x = m_adb_mousex->read(); new_mouse_y = m_adb_mousey->read(); if ((m_mouse_x != new_mouse_x) || (m_mouse_y != new_mouse_y)) { m_mouse_dx = seven_bit_diff(new_mouse_x, m_mouse_x); m_mouse_dy = seven_bit_diff(new_mouse_y, m_mouse_y); m_mouse_x = new_mouse_x; m_mouse_y = new_mouse_y; m_adb_kmstatus |= 0x80; m_adb_kmstatus &= ~0x02; if (m_adb_kmstatus & 0x40) apple2gs_add_irq(IRQ_ADB_MOUSE); } } } #endif void apple2gs_state::apple2gs_set_scanint(UINT8 data) { /* second interrupt */ if ((m_vgcint & 0x40) && !(data & 0x40)) { apple2gs_remove_irq(IRQ_VGC_SECOND); m_vgcint &= ~0xC0; } /* scanline interrupt */ if ((m_vgcint & 0x20) && !(data & 0x20)) { apple2gs_remove_irq(IRQ_VGC_SCANLINE); m_vgcint &= ~0xA0; } if (m_pending_irqs & (IRQ_VGC_SECOND | IRQ_VGC_SCANLINE)) m_vgcint |= 0x80; } TIMER_CALLBACK_MEMBER(apple2gs_state::apple2gs_scanline_tick) { int scanline; scanline = machine().first_screen()->vpos(); machine().first_screen()->update_partial(scanline); /* check scanline interrupt bits if we're in super hi-res and the current scanline is within the active display area */ if ((m_newvideo & 0x80) && (scanline >= (BORDER_TOP-1)) && (scanline < (200+BORDER_TOP-1))) { UINT8 scb; scb = m_slowmem[0x19D00 + scanline - BORDER_TOP + 1]; if (scb & 0x40) { // scanline int flag is set even when the actual interrupt is disabled m_vgcint |= 0x20; // see if the interrupt is also enabled and trigger it if so if (m_vgcint & 0x02) { m_vgcint |= 0x80; apple2gs_add_irq(IRQ_VGC_SCANLINE); } } } if (scanline == (192+BORDER_TOP)) { /* VBL interrupt */ if ((m_inten & 0x08) && !(m_intflag & 0x08)) { m_intflag |= 0x08; apple2gs_add_irq(IRQ_INTEN_VBL); } } /* check the mouse status */ if ((scanline % 8) == 0) { #if !RUN_ADB_MICRO adb_check_mouse(); #endif /* call Apple II interrupt handler */ if ((machine().first_screen()->vpos() % 8) == 7) { //apple2_interrupt(m_maincpu); /* TODO: check me! */ machine().first_screen()->update_partial(machine().first_screen()->vpos()); } } m_scanline_timer->adjust(machine().first_screen()->time_until_pos((scanline+1)%262, 0)); } /* ----------------------------------------------------------------------- * Sound handlers * ----------------------------------------------------------------------- */ READ8_MEMBER( apple2gs_state::gssnd_r ) { UINT8 ret = 0; switch (offset) { case 0: // control ret = m_sndglu_ctrl; break; case 1: // data read ret = m_sndglu_dummy_read; if (m_sndglu_ctrl & 0x40) // docram access { UINT8 *docram = memregion("es5503")->base(); m_sndglu_dummy_read = docram[m_sndglu_addr]; } else { m_sndglu_dummy_read = m_es5503->read(space, m_sndglu_addr); } if (m_sndglu_ctrl & 0x20) // auto-increment { m_sndglu_addr++; } break; case 2: // addr l ret = m_sndglu_addr & 0xff; break; case 3: // addr h ret = (m_sndglu_addr >> 8) & 0xff; break; } return ret; } WRITE8_MEMBER( apple2gs_state::gssnd_w ) { switch (offset) { case 0: // control m_sndglu_ctrl = data & 0x7f; // make sure DOC is never busy if (!(m_sndglu_ctrl & 0x40)) // clear hi byte of address pointer on DOC access { m_sndglu_addr &= 0xff; } break; case 1: // data write if (m_sndglu_ctrl & 0x40) // docram access { UINT8 *docram = memregion("es5503")->base(); docram[m_sndglu_addr] = data; } else { m_es5503->write(space, m_sndglu_addr, data); } if (m_sndglu_ctrl & 0x20) // auto-increment { m_sndglu_addr++; } break; case 2: // addr l m_sndglu_addr &= 0xff00; m_sndglu_addr |= data; break; case 3: // addr h m_sndglu_addr &= 0x00ff; m_sndglu_addr |= data<<8; break; } } /* ----------------------------------------------------------------------- * IO handlers * ----------------------------------------------------------------------- */ // apple2gs_get_vpos - return the correct vertical counter value for the current scanline, // keeping borders in mind. int apple2gs_state::apple2gs_get_vpos() { int result, scan; static const UINT8 top_border_vert[BORDER_TOP] = { 0xfa, 0xfa, 0xfa, 0xfa, 0xfb, 0xfb, 0xfb, 0xfb, 0xfc, 0xfc, 0xfc, 0xfd, 0xfd, 0xfe, 0xfe, 0xff, }; scan = machine().first_screen()->vpos(); if (scan < BORDER_TOP) { result = top_border_vert[scan]; } else { result = scan - BORDER_TOP + 0x100 + 1; } return result; } READ8_MEMBER( apple2gs_state::apple2gs_c0xx_r ) { UINT8 result; scc8530_t *scc; if(space.debugger_access()) { return 0; } offset &= 0xFF; switch(offset) { #if RUN_ADB_MICRO case 0x00: /* C000 - KEYDATA */ result = keyglu_816_read(GLU_C000); break; case 0x10: /* C010 - KBDSTRB */ result = keyglu_816_read(GLU_C010); break; #endif case 0x19: /* C019 - RDVBLBAR */ result = (space.machine().first_screen()->vpos() >= (192+BORDER_TOP)) ? 0x80 : 0x00; break; case 0x22: /* C022 - TBCOLOR */ result = (m_fgcolor << 4) | m_bgcolor; break; case 0x23: /* C023 - VGCINT */ result = m_vgcint; break; case 0x24: /* C024 - MOUSEDATA */ #if RUN_ADB_MICRO result = keyglu_816_read(GLU_MOUSEX); #else result = adb_read_mousedata(); #endif break; case 0x25: /* C025 - KEYMODREG */ #if RUN_ADB_MICRO result = keyglu_816_read(GLU_KEYMOD); #else result = 0; { UINT8 temp = m_kbspecial->read(); if (temp & 1) // capslock { result |= 4; } if (temp & 6) // shift { result |= 1; } if (temp & 8) // control { result |= 2; } if (temp & 0x10) // open apple/command { result |= 0x40; } if (temp & 0x20) // option { result |= 0x80; } // keypad is a little rough right now if (m_lastchar >= 0x28 && m_lastchar <= 0x2d) { result |= 0x10; } else if (m_lastchar >= 0x32 && m_lastchar <= 0x3f) { result |= 0x10; } else if (m_lastchar >= 0x100 && m_lastchar <= 0x101) { result |= 0x10; } else if (m_lastchar >= 0x109 && m_lastchar <= 0x10a) { result |= 0x10; } } #endif break; case 0x26: /* C026 - DATAREG */ #if RUN_ADB_MICRO result = keyglu_816_read(GLU_DATA); #else result = adb_read_datareg(); #endif break; case 0x27: /* C027 - KMSTATUS */ #if RUN_ADB_MICRO result = keyglu_816_read(GLU_SYSSTAT); #else result = adb_read_kmstatus(); #endif break; case 0x29: /* C029 - NEWVIDEO */ result = m_newvideo; break; case 0x2B: /* C02B - LANGSEL */ result = m_langsel; break; case 0x2D: /* C02D - SLTROMSEL */ result = m_sltromsel; break; case 0x2E: /* C02E - VERTCNT */ result = apple2gs_get_vpos() >> 1; break; case 0x2F: /* C02F - HORIZCNT */ result = space.machine().first_screen()->hpos() / 11; if (result > 0) { result += 0x40; } if (apple2gs_get_vpos() & 1) { result |= 0x80; } break; case 0x31: /* C031 - DISKREG */ result = m_fdc_diskreg; break; case 0x33: /* C033 - CLOCKDATA */ result = m_clock_data; break; case 0x34: /* C034 - CLOCKCTL */ result = m_clock_control; break; case 0x35: /* C035 - SHADOW */ result = m_shadow; break; case 0x36: /* C036 - CYAREG */ result = m_cyareg; break; case 0x38: /* C038 - SCCBREG */ case 0x39: /* C039 - SCCAREG */ case 0x3A: /* C03A - SCCBDATA */ case 0x3B: /* C03B - SCCADATA */ scc = space.machine().device("scc"); result = scc->reg_r(space, offset & 0x03); break; case 0x3C: /* C03C - SOUNDCTL */ case 0x3D: /* C03D - SOUNDDATA */ case 0x3E: /* C03E - SOUNDADRL */ case 0x3F: /* C03F - SOUNDADRH */ result = gssnd_r(space, offset & 0x03, mem_mask); break; case 0x41: /* C041 - INTEN */ result = m_inten; break; case 0x46: /* C046 - INTFLAG */ result = m_intflag; break; case 0x68: /* C068 - STATEREG */ result = ((m_flags & VAR_ALTZP) ? 0x80 : 0x00) | ((m_flags & VAR_PAGE2) ? 0x40 : 0x00) | ((m_flags & VAR_RAMRD) ? 0x20 : 0x00) | ((m_flags & VAR_RAMWRT) ? 0x10 : 0x00) | ((m_flags & VAR_LCRAM) ? 0x00 : 0x08) | ((m_flags & VAR_LCRAM2) ? 0x04 : 0x00) | ((m_flags & VAR_INTCXROM)? 0x01 : 0x00); break; case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: case 0x78: case 0x79: case 0x7a: case 0x7b: case 0x7c: case 0x7d: case 0x7e: case 0x7f: offset |= (memregion("maincpu")->bytes() - 1) & ~0x3FFF; result = m_rom[offset]; break; case 0x21: /* C021 - MONOCOLOR */ case 0x2C: /* C02C - CHARROM */ result = 0x00; break; // slot 6 registers should go to applefdc if slot 6 not "Your Card" case 0xe0: case 0xe1: case 0xe2: case 0xe3: case 0xe4: case 0xe5: case 0xe6: case 0xe7: case 0xe8: case 0xe9: case 0xea: case 0xeb: case 0xec: case 0xed: case 0xee: case 0xef: if ((m_sltromsel & (1 << 6)) == 0) { result = m_fdc->read(offset); } else { result = apple2_c0xx_r(space, offset, 0); } break; default: if (offset < 0x80) { result = apple2_c0xx_r(space, offset, 0); } else { result = apple2_c080_r(space, offset, 0); } break; } if (LOG_C0XX) logerror("apple2gs_c0xx_r(): offset=0x%02x result=0x%02x\n", offset, result); return result; } WRITE8_MEMBER( apple2gs_state::apple2gs_c0xx_w ) { scc8530_t *scc; offset &= 0xFF; if (LOG_C0XX) logerror("apple2gs_c0xx_w(): offset=0x%02x data=0x%02x\n", offset, data); switch(offset) { #if RUN_ADB_MICRO case 0x10: break; #endif case 0x22: /* C022 - TBCOLOR */ m_fgcolor = (data >> 4) & 0x0F; m_bgcolor = (data >> 0) & 0x0F; break; case 0x23: /* C023 - VGCINT */ m_vgcint &= ~0x0F; m_vgcint |= data & 0x0F; break; case 0x24: /* C024 - MOUSEDATA */ case 0x25: /* C025 - KEYMODREG */ case 0x28: /* C028 - ROMBANK */ case 0x2C: /* C02C - CHARROM */ case 0x2E: /* C02E - VERTCNT */ case 0x2F: /* C02F - HORIZCNT */ /* ignore these writes */ break; case 0x26: /* C026 - DATAREG */ #if RUN_ADB_MICRO keyglu_816_write(GLU_COMMAND, data); #else adb_write_datareg(data); #endif break; case 0x27: /* C027 - KMSTATUS */ #if RUN_ADB_MICRO keyglu_816_write(GLU_SYSSTAT, data); #else adb_write_kmstatus(data); #endif break; case 0x29: /* C029 - NEWVIDEO */ m_newvideo = data; break; case 0x2B: /* C02B - LANGSEL */ m_langsel = data; break; case 0x2D: /* C02D - SLTROMSEL */ m_sltromsel = data; apple2_update_memory(); break; case 0x31: /* C031 - DISKREG */ apple2_iwm_setdiskreg(data); break; case 0x32: /* C032 - SCANINT */ apple2gs_set_scanint(data); break; case 0x33: /* C033 - CLOCKDATA */ m_clock_data = data; break; case 0x34: /* C034 - CLOCKCTL */ m_clock_control = data & 0x7F; m_bordercolor = data & 0x0F; if (data & 0x80) process_clock(); break; case 0x35: /* C035 - SHADOW */ if (m_shadow != data) { m_shadow = data; apple2_update_memory(); } break; case 0x36: /* C036 - CYAREG */ m_cyareg = data & ~0x20; m_maincpu->set_unscaled_clock((data & 0x80) ? APPLE2GS_14M/5 : APPLE2GS_7M/7); break; case 0x38: /* C038 - SCCBREG */ case 0x39: /* C039 - SCCAREG */ case 0x3A: /* C03A - SCCBDATA */ case 0x3B: /* C03B - SCCADATA */ scc = space.machine().device("scc"); scc->reg_w(space, offset & 0x03, data); break; case 0x3C: /* C03C - SOUNDCTL */ case 0x3D: /* C03D - SOUNDDATA */ case 0x3E: /* C03E - SOUNDADRL */ case 0x3F: /* C03F - SOUNDADRH */ gssnd_w(space, offset & 0x03, data, mem_mask); break; case 0x41: /* C041 - INTEN */ m_inten = data & 0x1F; if ((m_inten & 0x10) == 0x00) apple2gs_remove_irq(IRQ_INTEN_QSECOND); if ((m_inten & 0x08) == 0x00) apple2gs_remove_irq(IRQ_INTEN_VBL); break; case 0x47: /* C047 - CLRVBLINT */ m_intflag &= ~0x18; apple2gs_remove_irq(IRQ_INTEN_QSECOND); apple2gs_remove_irq(IRQ_INTEN_VBL); break; case 0x68: /* C068 - STATEREG */ apple2_setvar( ((data & 0x80) ? VAR_ALTZP : 0) | ((data & 0x40) ? VAR_PAGE2 : 0) | ((data & 0x20) ? VAR_RAMRD : 0) | ((data & 0x10) ? VAR_RAMWRT : 0) | ((data & 0x08) ? 0 : VAR_LCRAM) | ((data & 0x04) ? VAR_LCRAM2 : 0) | ((data & 0x01) ? VAR_INTCXROM : 0), VAR_ALTZP | VAR_PAGE2 | VAR_RAMRD | VAR_RAMWRT | VAR_LCRAM | VAR_LCRAM2 | VAR_INTCXROM); break; // slot 6 registers should go to applefdc if slot 6 not "Your Card" case 0xe0: case 0xe1: case 0xe2: case 0xe3: case 0xe4: case 0xe5: case 0xe6: case 0xe7: case 0xe8: case 0xe9: case 0xea: case 0xeb: case 0xec: case 0xed: case 0xee: case 0xef: if ((m_sltromsel & (1 << 6)) == 0) { m_fdc->write(offset, data); } else { apple2_c0xx_w(space, offset, data, 0); } break; default: if (offset < 0x80) { apple2_c0xx_w(space, offset, data, 0); } else { apple2_c080_w(space, offset, data, 0); } break; } } /* ----------------------------------------------------------------------- * Memory management * ----------------------------------------------------------------------- */ WRITE8_MEMBER( apple2gs_state::apple2gs_main0400_w ) { offset += 0x000400; m_rambase[offset] = data; if (!(m_shadow & 0x01)) { m_slowmem[offset] = data; } } WRITE8_MEMBER( apple2gs_state::apple2gs_aux0400_w ) { offset += 0x010400; m_rambase[offset] = data; if (!(m_shadow & 0x01)) { m_slowmem[offset] = data; } } WRITE8_MEMBER( apple2gs_state::apple2gs_main2000_w ) { offset += 0x002000; m_rambase[offset] = data; if (!(m_shadow & 0x02)) { m_slowmem[offset] = data; } } WRITE8_MEMBER( apple2gs_state::apple2gs_aux2000_w ) { offset += 0x012000; m_rambase[offset] = data; if (!(m_shadow & 0x12) || !(m_shadow & 0x08)) { m_slowmem[offset] = data; } } WRITE8_MEMBER( apple2gs_state::apple2gs_main4000_w ) { offset += 0x004000; m_rambase[offset] = data; if ((offset >= 0x004000) && (offset <= 0x005FFF)) { if (!(m_shadow & 0x04)) m_slowmem[offset] = data; } } WRITE8_MEMBER( apple2gs_state::apple2gs_aux4000_w ) { offset += 0x014000; m_rambase[offset] = data; if ((offset >= 0x014000) && (offset <= 0x015FFF)) { if (!(m_shadow & 0x14) || !(m_shadow & 0x08)) m_slowmem[offset] = data; } else if ((offset >= 0x016000) && (offset <= 0x019FFF)) { if (!(m_shadow & 0x08)) { m_slowmem[offset] = data; if (offset >= 0x19e00) { int color = (offset - 0x19e00) >> 1; m_shr_palette[color] = rgb_t( ((m_slowmem[0x19E00 + (color * 2) + 1] >> 0) & 0x0F) * 17, ((m_slowmem[0x19E00 + (color * 2) + 0] >> 4) & 0x0F) * 17, ((m_slowmem[0x19E00 + (color * 2) + 0] >> 0) & 0x0F) * 17); } } } } static void apple2gs_mem_000000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); meminfo->read_mem = (state->m_flags & VAR_ALTZP) ? 0x010000 : 0x000000; meminfo->write_mem = (state->m_flags & VAR_ALTZP) ? 0x010000 : 0x000000; } static void apple2gs_mem_000200(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x010200 : 0x000200; meminfo->write_mem = (state->m_flags & VAR_RAMWRT) ? 0x010200 : 0x000200; } static void apple2gs_mem_000400(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); if (state->m_flags & VAR_80STORE) { meminfo->read_mem = (state->m_flags & VAR_PAGE2) ? 0x010400 : 0x000400; meminfo->write_mem = (state->m_flags & VAR_PAGE2) ? 0x010400 : 0x000400; meminfo->write_handler = (state->m_flags & VAR_PAGE2) ? &state->write_delegates_2gs0400[0] : &state->write_delegates_2gs0400[1]; } else { meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x010400 : 0x000400; meminfo->write_mem = (state->m_flags & VAR_RAMWRT) ? 0x010400 : 0x000400; meminfo->write_handler = (state->m_flags & VAR_RAMWRT) ? &state->write_delegates_2gs0400[0] : &state->write_delegates_2gs0400[1]; } } static void apple2gs_mem_000800(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x010800 : 0x000800; meminfo->write_mem = (state->m_flags & VAR_RAMWRT) ? 0x010800 : 0x000800; } static void apple2gs_mem_002000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); if ((state->m_flags & (VAR_80STORE|VAR_HIRES)) == (VAR_80STORE|VAR_HIRES)) { meminfo->read_mem = (state->m_flags & VAR_PAGE2) ? 0x012000 : 0x002000; meminfo->write_mem = (state->m_flags & VAR_PAGE2) ? 0x012000 : 0x002000; meminfo->write_handler = (state->m_flags & VAR_PAGE2) ? &state->write_delegates_2gs2000[0] : &state->write_delegates_2gs2000[1]; } else { meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x012000 : 0x002000; meminfo->write_mem = (state->m_flags & VAR_RAMWRT) ? 0x012000 : 0x002000; meminfo->write_handler = (state->m_flags & VAR_RAMWRT) ? &state->write_delegates_2gs2000[0] : &state->write_delegates_2gs2000[1]; } } static void apple2gs_mem_004000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x014000 : 0x004000; meminfo->write_handler = (state->m_flags & VAR_RAMWRT) ? &state->write_delegates_2gs4000[0] : &state->write_delegates_2gs4000[1]; } static void apple2gs_mem_xxD000(running_machine &machine,apple2_meminfo *meminfo, UINT32 lcmem) { apple2gs_state *state = machine.driver_data(); if (state->m_flags & VAR_LCRAM) { if (state->m_flags & VAR_LCRAM2) meminfo->read_mem = lcmem | 0x00C000; else meminfo->read_mem = lcmem | 0x00D000; } else { meminfo->read_mem = 0x03D000 | APPLE2_MEM_ROM; } if (state->m_flags & VAR_LCWRITE) { if (state->m_flags & VAR_LCRAM2) meminfo->write_mem = lcmem | 0x00C000; else meminfo->write_mem = lcmem | 0x00D000; } else { meminfo->write_mem = APPLE2_MEM_FLOATING; } } static void apple2gs_mem_xxE000(running_machine &machine,apple2_meminfo *meminfo, UINT32 lcmem) { apple2gs_state *state = machine.driver_data(); if (state->m_flags & VAR_LCRAM) meminfo->read_mem = lcmem | 0x00E000; else meminfo->read_mem = 0x03E000 | APPLE2_MEM_ROM; if (state->m_flags & VAR_LCWRITE) meminfo->write_mem = lcmem | 0x00E000; else meminfo->write_mem = APPLE2_MEM_FLOATING; } static void apple2gs_mem_00D000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); if (state->m_shadow & 0x40) { meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x01D000 : 0x00D000; meminfo->write_mem = (state->m_flags & VAR_RAMWRT) ? 0x01D000 : 0x00D000; } else { apple2gs_mem_xxD000(machine,meminfo, (state->m_flags & VAR_ALTZP) ? 0x010000 : 0x000000); } } static void apple2gs_mem_00E000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); if (state->m_shadow & 0x40) { meminfo->read_mem = (state->m_flags & VAR_RAMRD) ? 0x01E000 : 0x00E000; meminfo->write_mem = (state->m_flags & VAR_RAMWRT) ? 0x01E000 : 0x00E000; } else { apple2gs_mem_xxE000(machine,meminfo, (state->m_flags & VAR_ALTZP) ? 0x010000 : 0x000000); } } static void apple2gs_mem_01D000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); if (state->m_shadow & 0x40) { meminfo->read_mem = 0x01D000; meminfo->write_mem = 0x01D000; } else { apple2gs_mem_xxD000(machine,meminfo, 0x010000); } } static void apple2gs_mem_01E000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_state *state = machine.driver_data(); if (state->m_shadow & 0x40) { meminfo->read_mem = 0x01E000; meminfo->write_mem = 0x01E000; } else { apple2gs_mem_xxE000(machine,meminfo, 0x010000); } } static void apple2gs_mem_E0D000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_mem_xxD000(machine,meminfo, 0x000000 | APPLE2_MEM_AUX); } static void apple2gs_mem_E0E000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_mem_xxE000(machine,meminfo, 0x000000 | APPLE2_MEM_AUX); } static void apple2gs_mem_E1D000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_mem_xxD000(machine,meminfo, 0x010000 | APPLE2_MEM_AUX); } static void apple2gs_mem_E1E000(running_machine &machine,offs_t begin, offs_t end, apple2_meminfo *meminfo) { apple2gs_mem_xxE000(machine,meminfo, 0x010000 | APPLE2_MEM_AUX); } static const apple2_memmap_entry apple2gs_memmap_entries[] = { { 0x000000, 0x0001FF, apple2gs_mem_000000, A2MEM_MONO }, { 0x000200, 0x0003FF, apple2gs_mem_000200, A2MEM_DUAL }, { 0x000400, 0x0007FF, apple2gs_mem_000400, A2MEM_DUAL }, { 0x000800, 0x001FFF, apple2gs_mem_000800, A2MEM_DUAL }, { 0x002000, 0x003FFF, apple2gs_mem_002000, A2MEM_DUAL }, { 0x004000, 0x00BFFF, apple2gs_mem_004000, A2MEM_DUAL }, { 0x00D000, 0x00DFFF, apple2gs_mem_00D000, A2MEM_DUAL }, { 0x00E000, 0x00FFFF, apple2gs_mem_00E000, A2MEM_DUAL }, { 0x01D000, 0x01DFFF, apple2gs_mem_01D000, A2MEM_DUAL }, { 0x01E000, 0x01FFFF, apple2gs_mem_01E000, A2MEM_DUAL }, { 0xE0D000, 0xE0DFFF, apple2gs_mem_E0D000, A2MEM_DUAL }, { 0xE0E000, 0xE0FFFF, apple2gs_mem_E0E000, A2MEM_DUAL }, { 0xE1D000, 0xE1DFFF, apple2gs_mem_E1D000, A2MEM_DUAL }, { 0xE1E000, 0xE1FFFF, apple2gs_mem_E1E000, A2MEM_DUAL }, { 0 } }; UINT8 *apple2gs_state::apple2gs_getslotmem(offs_t address) { UINT8 *rom; address %= 0x00FFFF; assert(address >= 0xC000); assert(address <= 0xCFFF); rom = m_rom; rom += 0x030000 % memregion("maincpu")->bytes(); return &rom[address]; } UINT8 apple2gs_state::apple2gs_xxCxxx_r(address_space &space, offs_t address) { UINT8 result; int slot; if ((m_shadow & 0x40) && ((address & 0xF00000) == 0x000000)) // shadow all banks and C0xx? { result = m_ram->pointer()[address]; } else if ((address & 0x000F00) == 0x000000) // accessing C0xx? { result = apple2gs_c0xx_r(m_maincpu->space(AS_PROGRAM), address, 0); } else { device_a2bus_card_interface *slotdevice; slot = (address & 0x000F00) / 0x100; if (slot <= 7) // slots 1-7, it's the slot { slotdevice = m_a2bus->get_a2bus_card(slot); // is this slot internal or "Your Card"? if ((m_sltromsel & (1 << slot)) == 0) { // accessing a slot mapped to internal, let's put back the internal ROM m_a2_cnxx_slot = -1; apple2_update_memory(); result = *apple2gs_getslotmem(address); } else { // accessing a slot mapped to "Your Card", C800 should belong to that card if (slotdevice != nullptr) { if (slotdevice->take_c800()) { m_a2_cnxx_slot = slot; apple2_update_memory(); } result = slotdevice->read_cnxx(space, address&0xff); } else { result = apple2_getfloatingbusvalue(); } } } else // C800-CFFF, not cards { slotdevice = nullptr; // if CFFF accessed, reset C800 area to internal ROM if(!space.debugger_access()) { if ((address & 0xfff) == 0xfff) { m_a2_cnxx_slot = -1; apple2_update_memory(); } } if ( m_a2_cnxx_slot >= 0 && m_a2_cnxx_slot <= 7 ) { slotdevice = m_a2bus->get_a2bus_card(m_a2_cnxx_slot); } if (slotdevice) { result = slotdevice->read_c800(space, address&0x7ff); } else { result = *apple2gs_getslotmem(address); } } } return result; } void apple2gs_state::apple2gs_xxCxxx_w(address_space &space, offs_t address, UINT8 data) { int slot; // if CFFF accessed, reset C800 area to internal ROM if(!space.debugger_access()) { if ((address & 0xfff) == 0xfff) { m_a2_cnxx_slot = -1; apple2_update_memory(); } } if ((m_shadow & 0x40) && ((address & 0xF00000) == 0x000000)) { m_ram->pointer()[address] = data; } else if ((address & 0x000F00) == 0x000000) { apple2gs_c0xx_w(m_maincpu->space(AS_PROGRAM), address, data, 0); } else { device_a2bus_card_interface *slotdevice; slot = (address & 0x000F00) / 0x100; if (slot <= 7) // slots 1-7, it's the slot { slotdevice = m_a2bus->get_a2bus_card(slot); // is this slot internal or "Your Card"? if ((m_sltromsel & (1 << slot)) == 0) { // accessing a slot mapped to internal, let's put back the internal ROM m_a2_cnxx_slot = -1; apple2_update_memory(); *apple2gs_getslotmem(address) = data; } else { // accessing a slot mapped to "Your Card", C800 should belong to that card if it can take it if (slotdevice != nullptr) { if (slotdevice->take_c800()) { m_a2_cnxx_slot = slot; apple2_update_memory(); } slotdevice->write_cnxx(space, address&0xff, data); } // (else slot is your card but there's no card inserted so the write goes nowhere) } } else // C800-CFFF, not cards { slotdevice = nullptr; // if CFFF accessed, reset C800 area to internal ROM if ((address & 0xfff) == 0xfff) { m_a2_cnxx_slot = -1; apple2_update_memory(); } if ( m_a2_cnxx_slot >= 0 && m_a2_cnxx_slot <= 7 ) { slotdevice = m_a2bus->get_a2bus_card(m_a2_cnxx_slot); } if (slotdevice) { slotdevice->write_c800(space, address&0x7ff, data); } else { *apple2gs_getslotmem(address) = data; } } } } READ8_MEMBER( apple2gs_state::apple2gs_00Cxxx_r ) { return apple2gs_xxCxxx_r(space, offset | 0x00C000); } READ8_MEMBER( apple2gs_state::apple2gs_01Cxxx_r ) { return apple2gs_xxCxxx_r(space, offset | 0x01C000); } READ8_MEMBER( apple2gs_state::apple2gs_E0Cxxx_r ) { return apple2gs_xxCxxx_r(space, offset | 0xE0C000); } READ8_MEMBER( apple2gs_state::apple2gs_E1Cxxx_r ) { return apple2gs_xxCxxx_r(space, offset | 0xE1C000); } WRITE8_MEMBER( apple2gs_state::apple2gs_00Cxxx_w ) { apple2gs_xxCxxx_w(space, offset | 0x00C000, data); } WRITE8_MEMBER( apple2gs_state::apple2gs_01Cxxx_w ) { apple2gs_xxCxxx_w(space, offset | 0x01C000, data); } WRITE8_MEMBER( apple2gs_state::apple2gs_E0Cxxx_w ) { apple2gs_xxCxxx_w(space, offset | 0xE0C000, data); } WRITE8_MEMBER( apple2gs_state::apple2gs_E1Cxxx_w ) { apple2gs_xxCxxx_w(space, offset | 0xE1C000, data); } WRITE8_MEMBER( apple2gs_state::apple2gs_Exxxxx_w ) { m_slowmem[offset] = data; } WRITE8_MEMBER( apple2gs_state::apple2gs_E004xx_w ) { apple2gs_Exxxxx_w(space, offset + 0x00400, data, mem_mask); } WRITE8_MEMBER( apple2gs_state::apple2gs_E02xxx_w ) { apple2gs_Exxxxx_w(space, offset + 0x02000, data, mem_mask); } WRITE8_MEMBER( apple2gs_state::apple2gs_E104xx_w ) { apple2gs_Exxxxx_w(space, offset + 0x10400, data, mem_mask); } WRITE8_MEMBER( apple2gs_state::apple2gs_E12xxx_w ) { apple2gs_Exxxxx_w(space, offset + 0x12000, data, mem_mask); } WRITE8_MEMBER( apple2gs_state::apple2gs_slowmem_w ) { m_slowmem[offset] = data; if ((offset >= 0x19e00) && (offset < 0x19fff)) { int color = (offset - 0x19e00) >> 1; m_shr_palette[color] = rgb_t( ((m_slowmem[0x19E00 + (color * 2) + 1] >> 0) & 0x0F) * 17, ((m_slowmem[0x19E00 + (color * 2) + 0] >> 4) & 0x0F) * 17, ((m_slowmem[0x19E00 + (color * 2) + 0] >> 0) & 0x0F) * 17); } } // Because the bank address multiplexes on the 65816 data bus, reading a memory area // which doesn't drive the bus results in reading back the bank number. READ8_MEMBER(apple2gs_state::apple2gs_bank_echo_r) { return m_echo_bank + (offset>>16); } void apple2gs_state::apple2gs_setup_memory() { address_space& space = m_maincpu->space(AS_PROGRAM); offs_t begin, end; apple2_memmap_config cfg; /* allocate memory for E00000-E1FFFF */ m_slowmem = auto_alloc_array_clear(machine(), UINT8, 128*1024); save_pointer(m_slowmem, "APPLE2GS_SLOWMEM", 128*1024); // install expanded memory // fair warning: other code assumes banks 0 and 1 are the first 128k of the RAM device, so you must install bank 1 at 0x10000 // otherwise nothing works :) if (m_is_rom3) { int ramsize = m_ram->size(); // ROM 03 hardware: the quoted "1 MB" for a base machine doesn't include banks e0/e1, so map accordingly space.install_readwrite_bank(0x010000, ramsize - 1, "bank1"); membank("bank1")->set_base(m_ram->pointer() + 0x010000); space.install_read_handler( ramsize, 0xdfffff, read8_delegate(FUNC(apple2gs_state::apple2gs_bank_echo_r),this)); m_echo_bank = (ramsize >> 16); } else { int ramsize = m_ram->size()-0x30000; // ROM 00/01 hardware: the quoted "256K" for a base machine *does* include banks e0/e1. space.install_readwrite_bank(0x010000, ramsize - 1 + 0x10000, "bank1"); membank("bank1")->set_base(m_ram->pointer() + 0x010000); space.install_read_handler( ramsize + 0x10000, 0xdfffff, read8_delegate(FUNC(apple2gs_state::apple2gs_bank_echo_r),this)); m_echo_bank = (ramsize+0x10000) >> 16; } /* install hi memory */ space.install_read_bank(0xe00000, 0xe1ffff, "bank2"); space.install_write_handler(0xe00000, 0xe1ffff, write8_delegate(FUNC(apple2gs_state::apple2gs_slowmem_w),this)); space.install_write_handler(0xe00400, 0xe007ff, write8_delegate(FUNC(apple2gs_state::apple2gs_E004xx_w),this)); space.install_write_handler(0xe02000, 0xe03fff, write8_delegate(FUNC(apple2gs_state::apple2gs_E02xxx_w),this)); space.install_write_handler(0xe10400, 0xe107ff, write8_delegate(FUNC(apple2gs_state::apple2gs_E104xx_w),this)); space.install_write_handler(0xe12000, 0xe13fff, write8_delegate(FUNC(apple2gs_state::apple2gs_E12xxx_w),this)); membank("bank2")->set_base(m_slowmem); /* install alternate ROM bank */ begin = 0x1000000 - memregion("maincpu")->bytes(); end = 0xffffff; space.install_read_bank(begin, end, "bank3"); membank("bank3")->set_base(m_rom); /* install new xxC000-xxCFFF handlers */ space.install_read_handler(0x00c000, 0x00cfff, read8_delegate(FUNC(apple2gs_state::apple2gs_00Cxxx_r),this)); space.install_write_handler(0x00c000, 0x00cfff, write8_delegate(FUNC(apple2gs_state::apple2gs_00Cxxx_w),this)); space.install_read_handler(0x01c000, 0x01cfff, read8_delegate(FUNC(apple2gs_state::apple2gs_01Cxxx_r),this)); space.install_write_handler(0x01c000, 0x01cfff, write8_delegate(FUNC(apple2gs_state::apple2gs_01Cxxx_w),this)); space.install_read_handler(0xe0c000, 0xe0cfff, read8_delegate(FUNC(apple2gs_state::apple2gs_E0Cxxx_r),this)); space.install_write_handler(0xe0c000, 0xe0cfff, write8_delegate(FUNC(apple2gs_state::apple2gs_E0Cxxx_w),this)); space.install_read_handler(0xe1c000, 0xe1cfff, read8_delegate(FUNC(apple2gs_state::apple2gs_E1Cxxx_r),this)); space.install_write_handler(0xe1c000, 0xe1cfff, write8_delegate(FUNC(apple2gs_state::apple2gs_E1Cxxx_w),this)); /* install aux memory writes (for shadowing) */ space.install_write_handler(0x010400, 0x0107FF, write8_delegate(FUNC(apple2gs_state::apple2gs_aux0400_w), this)); space.install_write_handler(0x012000, 0x013FFF, write8_delegate(FUNC(apple2gs_state::apple2gs_aux2000_w), this)); space.install_write_handler(0x014000, 0x019FFF, write8_delegate(FUNC(apple2gs_state::apple2gs_aux4000_w), this)); /* setup the Apple II memory system */ memset(&cfg, 0, sizeof(cfg)); cfg.first_bank = 4; cfg.memmap = apple2gs_memmap_entries; cfg.auxmem = m_slowmem; cfg.auxmem_length = 0x20000; apple2_setup_memory(&cfg); } /* ----------------------------------------------------------------------- * Driver Init * ----------------------------------------------------------------------- */ READ8_MEMBER(apple2gs_state::apple2gs_read_vector) { return space.read_byte(offset | 0xFF0000); } MACHINE_RESET_MEMBER(apple2gs_state,apple2gs) { apple2gs_refresh_delegates(); // call "base class" machine reset to set up m_rambase and the language card machine_reset(); m_cur_slot6_image = nullptr; m_newvideo = 0x00; m_vgcint = 0x00; m_langsel = 0x00; m_sltromsel = 0x00; m_cyareg = 0x80; m_inten = 0x00; m_intflag = 0x00; m_shadow = 0x00; m_pending_irqs = 0x00; m_mouse_x = 0x00; m_mouse_y = 0x00; m_mouse_dx = 0x00; m_mouse_dy = 0x00; #if !RUN_ADB_MICRO m_adb_state = ADBSTATE_IDLE; m_adb_kmstatus = 0x00; m_adb_command = 0; m_adb_mode = 0; m_adb_latent_result = 0; m_adb_command_length = 0; m_adb_command_pos = 0; memset(m_adb_command_bytes, 0, sizeof(m_adb_command_bytes)); memset(m_adb_response_bytes, 0, sizeof(m_adb_response_bytes)); m_adb_response_length = 0; m_adb_response_pos = 0; memset(m_adb_memory, 0, sizeof(m_adb_memory)); m_adb_address_keyboard = 2; m_adb_address_mouse = 3; #endif /* init time */ m_clock_data = 0; m_clock_control =0; m_clock_read = 0; m_clock_reg1 = 0; m_clock_mode = CLOCKMODE_IDLE; m_clock_curtime = 0; m_clock_curtime_interval = 0; m_sndglu_ctrl = 0x00; m_sndglu_addr = 0; m_sndglu_dummy_read = 0; m_adb_dtime = 0; m_last_adb_time = 0; } MACHINE_START_MEMBER(apple2gs_state,apple2gscommon) { apple2gs_refresh_delegates(); m_machinetype = APPLE_IIGS; apple2eplus_init_common(nullptr); /* set up Apple IIgs vectoring */ m_maincpu->set_read_vector_callback(read8_delegate(FUNC(apple2gs_state::apple2gs_read_vector),this)); /* setup globals */ m_is_rom3 = true; machine().device("nvram")->set_base(m_clock_bram, sizeof(m_clock_bram)); /* save state stuff. note that the driver takes care of docram. */ UINT8* ram = m_ram->pointer(); save_pointer(ram, "APPLE2GS_RAM", m_ram->size()); save_item(m_newvideo, "NEWVIDEO"); save_item(m_bordercolor, "BORDERCOLOR"); save_item(m_vgcint, "VGCINT"); save_item(m_langsel, "LANGSEL"); save_item(m_sltromsel, "SLTROMSEL"); save_item(m_cyareg, "CYAREG"); save_item(m_inten, "INTEN"); save_item(m_intflag, "INTFLAG"); save_item(m_shadow, "SHADOW"); save_item(m_pending_irqs, "PENDIRQ"); save_item(m_mouse_x, "MX"); save_item(m_mouse_y, "MY"); save_item(m_mouse_dx, "MDX"); save_item(m_mouse_dy, "MDY"); save_item(m_clock_data, "CLKDATA"); save_item(m_clock_control, "CLKCTRL"); save_item(m_clock_read, "CLKRD"); save_item(m_clock_reg1, "CLKREG1"); save_item(m_clock_curtime, "CLKCURTIME"); save_item(m_clock_curtime_interval, "CLKCURTIMEINT"); // save_item(m_clock_mode, "CLKMODE"); save_item(NAME(m_clock_bram)); #if !RUN_ADB_MICRO save_item(NAME(m_adb_memory)); save_item(NAME(m_adb_command_bytes)); save_item(NAME(m_adb_response_bytes)); // save_item(m_adb_state, "ADB/m_adb_state"); save_item(m_adb_command, "ADB/m_adb_command"); save_item(m_adb_mode, "ADB/m_adb_mode"); save_item(m_adb_kmstatus, "ADB/m_adb_kmstatus"); save_item(m_adb_latent_result, "ADB/m_adb_latent_result"); save_item(m_adb_command_length, "ADB/m_adb_command_length"); save_item(m_adb_command_pos, "ADB/m_adb_command_pos"); save_item(m_adb_response_length, "ADB/m_adb_response_length"); save_item(m_adb_response_pos, "ADB/m_adb_response_pos"); save_item(m_adb_address_keyboard, "ADB/m_adb_address_keyboard"); save_item(m_adb_address_mouse, "ADB/m_adb_address_mouse"); #endif save_item(m_sndglu_ctrl, "SNDGLUCTRL"); save_item(m_sndglu_addr, "SNDGLUADDR"); save_item(m_sndglu_dummy_read, "SNDGLUDUMMYRD"); save_item(m_echo_bank, "ECHOBANK"); m_clock_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(apple2gs_state::apple2gs_clock_tick),this)); m_clock_timer->adjust(attotime::from_seconds(1), 0, attotime::from_seconds(1)); m_qsecond_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(apple2gs_state::apple2gs_qsecond_tick),this)); m_qsecond_timer->adjust(attotime::from_usec(266700), 0, attotime::from_usec(266700)); m_scanline_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(apple2gs_state::apple2gs_scanline_tick),this)); m_scanline_timer->adjust(attotime::never); // fire on scanline zero m_scanline_timer->adjust(machine().first_screen()->time_until_pos(0, 0)); } MACHINE_START_MEMBER(apple2gs_state,apple2gs) { MACHINE_START_CALL_MEMBER(apple2gscommon); apple2gs_setup_memory(); } MACHINE_START_MEMBER(apple2gs_state,apple2gsr1) { MACHINE_START_CALL_MEMBER(apple2gscommon); m_is_rom3 = false; apple2gs_setup_memory(); } void apple2gs_state::apple2gs_refresh_delegates() { write_delegates_2gs0400[0] = write8_delegate(FUNC(apple2gs_state::apple2gs_aux0400_w), this); write_delegates_2gs0400[1] = write8_delegate(FUNC(apple2gs_state::apple2gs_main0400_w), this); write_delegates_2gs2000[0] = write8_delegate(FUNC(apple2gs_state::apple2gs_aux2000_w), this); write_delegates_2gs2000[1] = write8_delegate(FUNC(apple2gs_state::apple2gs_main2000_w), this); write_delegates_2gs4000[0] = write8_delegate(FUNC(apple2gs_state::apple2gs_aux4000_w), this); write_delegates_2gs4000[1] = write8_delegate(FUNC(apple2gs_state::apple2gs_main4000_w), this); } /* ----------------------------------------------------------------------- * Keym_glu / low-level ADB emulation * ----------------------------------------------------------------------- */ #if RUN_ADB_MICRO UINT8 apple2gs_state::keyglu_mcu_read(UINT8 offset) { UINT8 rv = m_glu_regs[offset]; // printf("MCU reads reg %x\n", offset); // the command full flag is cleared by the MCU reading // first the KGS register and then the command register if ((offset == GLU_COMMAND) && (m_glu_mcu_read_kgs)) { m_glu_regs[GLU_KG_STATUS] &= ~KGS_COMMAND_FULL; m_glu_mcu_read_kgs = false; // printf("MCU reads COMMAND = %02x (drop command full)\n", rv); } // prime for the next command register read to clear the command full flag if (offset == GLU_KG_STATUS) { m_glu_mcu_read_kgs = true; } return rv; } void apple2gs_state::keyglu_mcu_write(UINT8 offset, UINT8 data) { m_glu_regs[offset] = data; // printf("MCU writes %02x to reg %x\n", data, offset); switch (offset) { case GLU_MOUSEX: case GLU_MOUSEY: m_glu_regs[GLU_KG_STATUS] |= KGS_MOUSEX_FULL; m_glu_mouse_read_stat = false; // signal next read will be mouse X break; case GLU_ANY_KEY_DOWN: // bit 7 is the actual flag here; both MCU programs write either 0x7f or 0xff // printf("%d to ANY_KEY_DOWN (PC=%x)\n", data, m_adbmicro->pc()); if (data & 0x80) { m_glu_regs[GLU_KG_STATUS] |= KGS_ANY_KEY_DOWN | KGS_KEYSTROBE; } break; case GLU_DATA: m_glu_regs[GLU_KG_STATUS] |= KGS_DATA_FULL; m_glu_816_read_dstat = false; // printf("MCU writes %02x to DATA\n", data); break; } } /* Keym_glu registers map as follows on the 816: C000 = key data + any key down, clears strobe C010 = clears keystrobe C024 MOUSEDATA = reads GLU mouseX and mouseY C025 KEYMODREG = reads GLU keymod register C026 DATAREG = writes from the 816 go to COMMAND, reads from DATA C027 KMSTATUS = GLU system status register */ UINT8 apple2gs_state::keyglu_816_read(UINT8 offset) { switch (offset) { case GLU_C000: { UINT8 rv; rv = m_glu_regs[GLU_KEY_DATA] & 0x7f; if (m_glu_regs[GLU_KG_STATUS] & KGS_KEYSTROBE) { rv |= 0x80; } return rv; } break; case GLU_C010: { UINT8 rv; rv = m_glu_regs[GLU_KEY_DATA] & 0x7f; if (m_glu_regs[GLU_KG_STATUS] & KGS_KEYSTROBE) { rv |= 0x80; } m_glu_regs[GLU_KG_STATUS] &= ~KGS_KEYSTROBE; return rv; } break; case GLU_MOUSEX: case GLU_MOUSEY: if (!m_glu_mouse_read_stat) { m_glu_mouse_read_stat = 1; return m_glu_regs[GLU_MOUSEY]; } return m_glu_regs[GLU_MOUSEX]; case GLU_SYSSTAT: // regenerate sysstat bits m_glu_sysstat &= ~0xab; // mask off read/write bits if (m_glu_regs[GLU_KG_STATUS] & KGS_COMMAND_FULL) { m_glu_sysstat |= 1; } if (m_glu_regs[GLU_KG_STATUS] & m_glu_mouse_read_stat) { m_glu_sysstat |= 2; } if (m_glu_regs[GLU_KG_STATUS] & KGS_KEYSTROBE) { m_glu_sysstat |= 8; } if (m_glu_regs[GLU_KG_STATUS] & KGS_DATA_FULL) { m_glu_sysstat |= 0x20; } if (m_glu_regs[GLU_KG_STATUS] & KGS_MOUSEX_FULL) { m_glu_sysstat |= 0x80; } m_glu_816_read_dstat = true; // printf("816 gets %02x in sysstat (data avail %02x)\n", m_glu_sysstat, m_glu_sysstat & 0x20); return m_glu_sysstat; case GLU_DATA: if (m_glu_816_read_dstat) { m_glu_816_read_dstat = false; m_glu_regs[GLU_KG_STATUS] &= ~KGS_DATA_FULL; // printf("816 reads %02x from DATA\n", m_glu_regs[GLU_DATA]); } return m_glu_regs[GLU_DATA]; default: return m_glu_regs[offset]; break; } return 0xff; } void apple2gs_state::keyglu_816_write(UINT8 offset, UINT8 data) { if (offset < GLU_C000) { m_glu_regs[offset&7] = data; } switch (offset) { case GLU_C010: m_glu_regs[GLU_KG_STATUS] &= ~KGS_KEYSTROBE; break; case GLU_COMMAND: // printf("816 sets COMMAND to %02x (raise command full)\n", data); m_glu_regs[GLU_KG_STATUS] |= KGS_COMMAND_FULL; break; case GLU_SYSSTAT: m_glu_sysstat &= 0xab; // clear the non-read-only fields m_glu_sysstat |= (data & ~0xab); break; } } #endif