diff options
Diffstat (limited to 'src/mess/drivers/osborne1.c')
-rw-r--r-- | src/mess/drivers/osborne1.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/src/mess/drivers/osborne1.c b/src/mess/drivers/osborne1.c deleted file mode 100644 index 4910ee5e0cc..00000000000 --- a/src/mess/drivers/osborne1.c +++ /dev/null @@ -1,262 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Wilbert Pol -/*************************************************************************** - - Osborne-1 driver file - -The Osborne-1 memory is divided into 3 "banks". - -Bank 1 simply consists of 64KB of RAM. The upper 4KB is used for the lower 8 -bit of video RAM entries. - -Bank 2 holds the BIOS ROM and I/O area. Only addresses 0000-3FFF are used -by bank 2. Bank 2 is divided as follows: -3000-3FFF Unused -2C00-2C03 Video PIA -2A00-2A01 Serial interface -2900-2903 488 PIA -2201-2280 Keyboard -2100-2103 Floppy -1000-1FFF Unused -0000-0FFF BIOS ROM - -Bank 3 has the ninth bit needed to complete the full Video RAM. These bits -are stored at F000-FFFF. Only the highest bit is used. - -On bootup bank 2 is active. - -The actual banking is done through I/O ports 00-03. -00 - Have both bank 2 and bank 1 active. This seems to be the power up default. -01 - Only have bank 1 active. -02 - Have both bank 2 and bank 3 active. (Not 100% sure, also bank 1 from 4000-EFFF?) -03 - Have both bank 2 and bank 1 active. - -TODO: - - Verify frequency of the beep/audio alarm. - -***************************************************************************/ - -#include "includes/osborne1.h" - - -#define MAIN_CLOCK 15974400 - - -static ADDRESS_MAP_START( osborne1_mem, AS_PROGRAM, 8, osborne1_state ) - AM_RANGE( 0x0000, 0x0FFF ) AM_READ_BANK("bank1") AM_WRITE( osborne1_0000_w ) - AM_RANGE( 0x1000, 0x1FFF ) AM_READ_BANK("bank2") AM_WRITE( osborne1_1000_w ) - AM_RANGE( 0x2000, 0x2FFF ) AM_READWRITE( osborne1_2000_r, osborne1_2000_w ) - AM_RANGE( 0x3000, 0x3FFF ) AM_READ_BANK("bank3") AM_WRITE( osborne1_3000_w ) - AM_RANGE( 0x4000, 0xEFFF ) AM_RAM - AM_RANGE( 0xF000, 0xFFFF ) AM_READ_BANK("bank4") AM_WRITE( osborne1_videoram_w ) -ADDRESS_MAP_END - - -static ADDRESS_MAP_START( osborne1_io, AS_IO, 8, osborne1_state ) - ADDRESS_MAP_UNMAP_HIGH - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE( 0x00, 0x03 ) AM_WRITE( osborne1_bankswitch_w ) -ADDRESS_MAP_END - - -static INPUT_PORTS_START( osborne1 ) - PORT_START("ROW0") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('[') PORT_CHAR(']') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('\'') PORT_CHAR('"') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2) - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) - - PORT_START("ROW1") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') - - PORT_START("ROW2") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) - - PORT_START("ROW3") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') - - PORT_START("ROW4") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') - - PORT_START("ROW5") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') - - PORT_START("ROW6") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\\') PORT_CHAR('|') - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) - - PORT_START("ROW7") - PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_DIPNAME( 0x08, 0, "Alpha Lock" ) PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) - PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) - PORT_DIPSETTING( 0x00, DEF_STR( On ) ) - PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) -INPUT_PORTS_END - - -static const z80_daisy_config osborne1_daisy_chain[] = -{ -/* { osborne1_z80_reset, osborne1_z80_irq_state, osborne1_z80_irq_ack, osborne1_z80_irq_reti, 0 }, */ - { "osborne1_daisy" }, - { NULL } -}; - - -/* - * The Osborne-1 supports the following disc formats: - * - Osborne single density: 40 tracks, 10 sectors per track, 256-byte sectors (100 KByte) - * - Osborne double density: 40 tracks, 5 sectors per track, 1024-byte sectors (200 KByte) - * - IBM Personal Computer: 40 tracks, 8 sectors per track, 512-byte sectors (160 KByte) - * - Xerox 820 Computer: 40 tracks, 18 sectors per track, 128-byte sectors (90 KByte) - * - DEC 1820 double density: 40 tracks, 9 sectors per track, 512-byte sectors (180 KByte) - * - */ - -static SLOT_INTERFACE_START( osborne1_floppies ) - SLOT_INTERFACE( "525sssd", FLOPPY_525_SSSD ) // Siemens FDD 100-5, custom Osborne electronics - SLOT_INTERFACE( "525ssdd", FLOPPY_525_SSDD ) // MPI 52(?), custom Osborne electronics -SLOT_INTERFACE_END - - -/* F4 Character Displayer */ -static const gfx_layout osborne1_charlayout = -{ - 8, 10, /* 8 x 10 characters */ - 128, /* 128 characters */ - 1, /* 1 bits per pixel */ - { 0 }, /* no bitplanes */ - /* x offsets */ - { 0, 1, 2, 3, 4, 5, 6, 7 }, - /* y offsets */ - { 0*128*8, 1*128*8, 2*128*8, 3*128*8, 4*128*8, 5*128*8, 6*128*8, 7*128*8, 8*128*8, 9*128*8 }, - 8 /* every char takes 16 x 1 bytes */ -}; - -static GFXDECODE_START( osborne1 ) - GFXDECODE_ENTRY( "chargen", 0x0000, osborne1_charlayout, 0, 1 ) -GFXDECODE_END - - -static MACHINE_CONFIG_START( osborne1, osborne1_state ) - MCFG_CPU_ADD( "maincpu", Z80, MAIN_CLOCK/4 ) - MCFG_CPU_PROGRAM_MAP( osborne1_mem) - MCFG_CPU_IO_MAP( osborne1_io) - MCFG_CPU_CONFIG( osborne1_daisy_chain ) - - MCFG_DEVICE_ADD( "osborne1_daisy", OSBORNE1_DAISY, 0 ) - - MCFG_SCREEN_ADD("screen", RASTER) - MCFG_SCREEN_UPDATE_DRIVER(osborne1_state, screen_update) - MCFG_SCREEN_RAW_PARAMS( MAIN_CLOCK/2, 512, 0, 416, 260, 0, 240 ) - MCFG_SCREEN_PALETTE("palette") - MCFG_GFXDECODE_ADD("gfxdecode", "palette", osborne1) - MCFG_PALETTE_ADD_MONOCHROME_GREEN_HIGHLIGHT("palette") - - MCFG_SPEAKER_STANDARD_MONO( "mono" ) - MCFG_SOUND_ADD( "beeper", BEEP, 0 ) - MCFG_SOUND_ROUTE( ALL_OUTPUTS, "mono", 1.00 ) - - MCFG_DEVICE_ADD("pia_0", PIA6821, 0) - MCFG_PIA_READPA_HANDLER(DEVREAD8(IEEE488_TAG, ieee488_device, dio_r)) - MCFG_PIA_READPB_HANDLER(READ8(osborne1_state, ieee_pia_pb_r)) - MCFG_PIA_WRITEPA_HANDLER(DEVWRITE8(IEEE488_TAG, ieee488_device, dio_w)) - MCFG_PIA_WRITEPB_HANDLER(WRITE8(osborne1_state, ieee_pia_pb_w)) - MCFG_PIA_CA2_HANDLER(DEVWRITELINE(IEEE488_TAG, ieee488_device, ifc_w)) - MCFG_PIA_CB2_HANDLER(DEVWRITELINE(IEEE488_TAG, ieee488_device, ren_w)) - MCFG_PIA_IRQA_HANDLER(WRITELINE(osborne1_state, ieee_pia_irq_a_func)) - - MCFG_DEVICE_ADD( "pia_1", PIA6821, 0) - MCFG_PIA_WRITEPA_HANDLER(WRITE8(osborne1_state, video_pia_port_a_w)) - MCFG_PIA_WRITEPB_HANDLER(WRITE8(osborne1_state, video_pia_port_b_w)) - MCFG_PIA_CB2_HANDLER(WRITELINE(osborne1_state, video_pia_out_cb2_dummy)) - MCFG_PIA_IRQA_HANDLER(WRITELINE(osborne1_state, video_pia_irq_a_func)) - - MCFG_DEVICE_ADD("mb8877", MB8877, MAIN_CLOCK/16) - MCFG_WD_FDC_FORCE_READY - MCFG_FLOPPY_DRIVE_ADD("mb8877:0", osborne1_floppies, "525ssdd", floppy_image_device::default_floppy_formats) - MCFG_FLOPPY_DRIVE_ADD("mb8877:1", osborne1_floppies, "525ssdd", floppy_image_device::default_floppy_formats) - - MCFG_IEEE488_BUS_ADD() - MCFG_IEEE488_SRQ_CALLBACK(DEVWRITELINE("pia_0", pia6821_device, ca2_w)) - MCFG_SOFTWARE_LIST_ADD("flop_list","osborne1") - - /* internal ram */ - MCFG_RAM_ADD(RAM_TAG) - MCFG_RAM_DEFAULT_SIZE("68K") /* 64KB Main RAM and 4Kbit video attribute RAM */ -MACHINE_CONFIG_END - - -ROM_START( osborne1 ) - ROM_REGION(0x1000, "maincpu", 0) - ROM_SYSTEM_BIOS( 0, "ver144", "BIOS version 1.44" ) - ROMX_LOAD( "3a10082-00rev-e.ud11", 0x0000, 0x1000, CRC(c0596b14) SHA1(ee6a9cc9be3ddc5949d3379351c1d58a175ce9ac), ROM_BIOS(1) ) - ROM_SYSTEM_BIOS( 1, "verA", "BIOS version A" ) - ROMX_LOAD( "osba.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(2) ) - ROM_SYSTEM_BIOS( 2, "ver12", "BIOS version 1.2" ) - ROMX_LOAD( "osb12.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(3) ) - ROM_SYSTEM_BIOS( 3, "ver121", "BIOS version 1.2.1" ) - ROMX_LOAD( "osb121.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(4) ) - ROM_SYSTEM_BIOS( 4, "ver13", "BIOS version 1.3" ) - ROMX_LOAD( "osb13.bin", 0x0000, 0x1000, NO_DUMP, ROM_BIOS(5) ) - ROM_SYSTEM_BIOS( 5, "ver14", "BISO version 1.4" ) - ROMX_LOAD( "rev1.40.ud11", 0x0000, 0x1000, CRC(3d966335) SHA1(0c60b97a3154a75868efc6370d26995eadc7d927), ROM_BIOS(6) ) - ROM_SYSTEM_BIOS( 6, "ver143", "BIOS version 1.43" ) - ROMX_LOAD( "rev1.43.ud11", 0x0000, 0x1000, CRC(91a48e3c) SHA1(c37b83f278d21e6e92d80f9c057b11f7f22d88d4), ROM_BIOS(7) ) - ROM_REGION( 0x800, "chargen", 0 ) - ROM_LOAD( "7a3007-00.ud15", 0x0000, 0x800, CRC(6c1eab0d) SHA1(b04459d377a70abc9155a5486003cb795342c801) ) - //ROM_LOAD( "char.ua15", 0x0000, 0x800, CRC(5297C109) SHA1(e1a59d87edd66e6c226102cb0688e9cb74dbb594) ) // this is CHRROM from v1.4 BIOS MB. I don't know how to hook up diff CHR to ROM_BIOS(6) - -ROM_END - -/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ -COMP( 1981, osborne1, 0, 0, osborne1, osborne1, osborne1_state, osborne1, "Osborne", "Osborne-1", 0 ) |