diff options
Diffstat (limited to 'src/mess/drivers/rm380z.c')
-rw-r--r-- | src/mess/drivers/rm380z.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/src/mess/drivers/rm380z.c b/src/mess/drivers/rm380z.c deleted file mode 100644 index 659ec0dbe31..00000000000 --- a/src/mess/drivers/rm380z.c +++ /dev/null @@ -1,179 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Wilbert Pol,Gabriele D'Antona -/* - -Research Machines 380Z (aka "RML 380Z" or "RM 380Z") -Microcomputer produced by Research Machines Limited, Oxford, UK -1978-1985 -MESS driver by Wilbert Pol and friol (dantonag (at) gmail.com) -Driver started on 22/12/2011 - -=== - -Memory map from sevice manual: - -PAGE SEL bit in PORT0 set to 0: - - 0000-3BFF - CPU RAM row 1 (15KB!) - 3C00-7BFF - CPU RAM row 2 (16KB) - 7C00-BBFF - Add-on RAM row 1 or HRG RAM (16KB) - BC00-DFFF - Add-on RAM row 2 (9KB!) - E000-EFFF - ROM (COS) - F000-F5FF - VDU and HRG Video RAM - F600-F9FF - ROM (monitor extension) - FA00-FAFF - Reserved, RAM? - FB00-FBFF - Memory-mapped ports (FBFC-FBFF) - FC00-FFFF - RAM - -PAGE SEL bit in PORT0 set to 1: - 0000-0FFF - ROM (COS mirror from E000) - 1B00-1BFF - Memory-mapped ports (1BFC-1BFF) - 1C00-1DFF - ROM - 4000-7FFF - CPU RAM row 1 (16KB!, this RAM normally appears at 0000) - 8000-BFFF - ??? - C000-DFFF - ??? - E000-EFFF - ROM (COS) - F000-F5FF - VDU and HRG Video RAM - F600-F9FF - ROM (monitor extension) - FA00-FAFF - Reserved, RAM? - FB00-FBFF - Memory-mapped ports (FBFC-FBFF) - FC00-FFFF - RAM - -Video resolution (not confirmed): -80x24 - 6 pixels wide (5 + spacing), 10 pixels high (9 + spacing) = 480x240 -Video input clock is 16MHz - -According to the manuals, VDU-1 chargen is Texas 74LS262. - -=== - -Notes on COS 4.0 disassembly: - -- routine at 0xe438 is called at startup in COS 4.0 and it sets the RST vectors in RAM -- routine at 0xe487 finds "top" of system RAM and stores it in 0x0006 and 0x000E -- 0xeca0 - outputs a string (null terminated) to screen (?) -- 0xff18 - does char output to screen (char in A?) - -=== - -TODO: - -- Properly implement "backwards" or "last 4 lines" scrolling -- Properly implement dimming and graphic chars (>0x80) -- Understand why any write to disk command fails with "bad sector" -- Understand why ctrl-U (blinking cursor) in COS 4.0 stops keyboard input from working -- Get a reliable ROM dump and charset ROM dump - - -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_param -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_enabled -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_period.attoseconds -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_period.seconds -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_start.attoseconds -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_start.seconds -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_expire.attoseconds -Attempt to register save state entry after state registration is closed! -Module timer tag static_vblank_timer name m_expire.seconds -':maincpu' (E48B): unmapped program memory write to E000 = C1 & FF -':maincpu' (E48E): unmapped program memory write to E000 = 3E & FF - -*/ - - -#include "includes/rm380z.h" - -#define KEYBOARD_TAG "keyboard" - -static ADDRESS_MAP_START(rm380z_mem, AS_PROGRAM, 8, rm380z_state) - AM_RANGE( 0xe000, 0xefff ) AM_ROM AM_REGION(RM380Z_MAINCPU_TAG, 0) - AM_RANGE( 0xf000, 0xf5ff ) AM_READWRITE(videoram_read,videoram_write) - AM_RANGE( 0xf600, 0xf9ff ) AM_ROM AM_REGION(RM380Z_MAINCPU_TAG, 0x1000) /* Extra ROM space for COS4.0 */ - AM_RANGE( 0xfa00, 0xfaff ) AM_RAM - AM_RANGE( 0xfb00, 0xfbff ) AM_READWRITE( port_read, port_write ) - AM_RANGE( 0xfc00, 0xffff ) AM_READWRITE(hiram_read,hiram_write) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( rm380z_io , AS_IO, 8, rm380z_state) - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00, 0xbf) AM_READWRITE(rm380z_portlow_r, rm380z_portlow_w) - AM_RANGE(0xc0, 0xc3) AM_DEVREADWRITE("wd1771", fd1771_t, read, write) - AM_RANGE(0xc4, 0xc4) AM_WRITE(disk_0_control) - AM_RANGE(0xc5, 0xff) AM_READWRITE(rm380z_porthi_r, rm380z_porthi_w) -ADDRESS_MAP_END - -INPUT_PORTS_START( rm380z ) -// PORT_START("additional_chars") -// PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Escape") PORT_CODE(KEYCODE_ESC) PORT_CODE(KEYCODE_ESC) -INPUT_PORTS_END - -// -// -// - -static SLOT_INTERFACE_START( rm380z_floppies ) - SLOT_INTERFACE("sssd", FLOPPY_525_SSSD) -SLOT_INTERFACE_END - -UINT32 rm380z_state::screen_update_rm380z(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - update_screen(bitmap); - return 0; -} - -static MACHINE_CONFIG_START( rm380z, rm380z_state ) - /* basic machine hardware */ - MCFG_CPU_ADD(RM380Z_MAINCPU_TAG, Z80, XTAL_4MHz) - MCFG_CPU_PROGRAM_MAP(rm380z_mem) - MCFG_CPU_IO_MAP(rm380z_io) - - /* video hardware */ - MCFG_SCREEN_ADD("screen", RASTER) - MCFG_SCREEN_REFRESH_RATE(50) - MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) - // according to videos and pictures of the real hardware, chars are spaced of at least 1 pixel - // and there is at least 1 pixel between each row of characters - MCFG_SCREEN_SIZE((RM380Z_SCREENCOLS*(RM380Z_CHDIMX+1)), (RM380Z_SCREENROWS*(RM380Z_CHDIMY+1))) - MCFG_SCREEN_VISIBLE_AREA(0, (RM380Z_SCREENCOLS*(RM380Z_CHDIMX+1))-1, 0, (RM380Z_SCREENROWS*(RM380Z_CHDIMY+1))-1) - MCFG_SCREEN_UPDATE_DRIVER(rm380z_state, screen_update_rm380z) - MCFG_SCREEN_PALETTE("palette") - - MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") - - /* RAM configurations */ - MCFG_RAM_ADD(RAM_TAG) - MCFG_RAM_DEFAULT_SIZE("56K") - - /* floppy disk */ - MCFG_FD1771_ADD("wd1771", XTAL_1MHz) - - MCFG_FLOPPY_DRIVE_ADD("wd1771:0", rm380z_floppies, "sssd", floppy_image_device::default_floppy_formats) - MCFG_FLOPPY_DRIVE_ADD("wd1771:1", rm380z_floppies, "sssd", floppy_image_device::default_floppy_formats) - - /* keyboard */ - MCFG_DEVICE_ADD(KEYBOARD_TAG, GENERIC_KEYBOARD, 0) - MCFG_GENERIC_KEYBOARD_CB(WRITE8(rm380z_state, keyboard_put)) -MACHINE_CONFIG_END - -/* ROM definition */ -ROM_START( rm380z ) - ROM_REGION( 0x10000, RM380Z_MAINCPU_TAG, 0 ) -// ROM_LOAD( "cos34e-m.bin", 0x0000, 0x1000, CRC(20e2ddf4) SHA1(3177b28793d5a348c94fd0ae6393d74e2e9a8662)) - // I'm not sure of how those roms have been dumped. I don't know if those are good dumps or not. - ROM_LOAD( "cos40b-m.bin", 0x0000, 0x1000, BAD_DUMP CRC(1f0b3a5c) SHA1(0b29cb2a3b7eaa3770b34f08c4fd42844f42700f)) - ROM_LOAD( "cos40b-m_f600-f9ff.bin", 0x1000, 0x400, BAD_DUMP CRC(e3397d9d) SHA1(490a0c834b0da392daf782edc7d51ca8f0668b1a)) - ROM_LOAD( "cos40b-m_1c00-1dff.bin", 0x1400, 0x200, BAD_DUMP CRC(0f759f44) SHA1(9689c1c1faa62c56def999cbedbbb0c8d928dcff)) - // chargen ROM is undumped, afaik - ROM_REGION( 0x1680, "chargen", 0 ) - ROM_LOAD( "ch3.raw", 0x0000, 0x1680, BAD_DUMP CRC(c223622b) SHA1(185ef24896419d7ff46f71a760ac217de3811684)) -ROM_END - -/* Driver */ - -COMP(1978, rm380z, 0, 0, rm380z, rm380z, driver_device, 0, "Research Machines", "RM-380Z", MACHINE_NO_SOUND_HW) |