mirror of
https://github.com/holub/mame
synced 2025-06-05 12:26:35 +03:00
(MESS) improvements to mbee256. Thanks to RedSkullDC for dumping the bankswitching prom, and ubee512-author for advice.
This commit is contained in:
Robbbert
parent
aa0ffdc153
commit
0f602ba86a
@ -22,11 +22,13 @@
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The unemulated Matilda is a IBM XT clone fitted with a NEC V40, and has the
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ability to emulate the 256TC as mentioned above.
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Floppy Disk types (as used by ubee512)
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- ss80 - single sided 80 track
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- ds40 - double-sided 40 track - 400KB
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- ds80, ds82, ds84 - double sided 80 track - 800KB
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- dsk - various - 211KB, 421KB, 841KB
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Floppy formats:
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- All disks are the standard CPCEMU 'dsk' format.
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- Types are 9cm 80 track, and 13cm 40 track (single or double sided)
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- 13cm has been specified as QD to prevent a nasty crash if an 80-track disk was mounted
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- The tracks/sector layout is the same regardless of size
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- Although certain models came with particular drives as standard, users could add
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the other size if they wished. We support both sizes on any model.
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Microbee Standard / Plus memory map
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@ -82,18 +84,24 @@
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- Fix Paste (it loses most of the characters)
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- RTC for 256TC works, but it is supposed to be an option on other
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models. It is being completely ignored.
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- all except 256tc: RTC is optional, but it is being totally ignored.
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- Most early models have a clock in Telcom, and in the menu. It doesn't
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work.
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- The Monitor program on 256TC crashes the system. This appears
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to be a MAME core bug involving the z80pio.
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- The 256TC corrupts itself when a floppy disk is detected.
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- Disk system doesn't work because of fdc problems.
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- various fdc issues:
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- only some ds40 disks can be used. All 80-track disks fail.
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- some disks show no or partial directory listing.
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- some disks cause MESS to freeze.
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- ENMF pin missing from wd_fdc.
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- incorrect timing for track register causes 256tc failure to boot a disk.
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- 56k model takes about 2 minutes to boot a disk if loaded via command line.
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- 256tc: At the menu, if F2 pressed to activate the Monitor, the emulated machine
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crashes due to a bug in z80pio emulation.
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- 256tc: Keyboard ROM U60 needs to be dumped.
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- 128k: PROM PAL needs to be dumped, so that the bankswitching can be fixed.
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- Teleterm: keyboard is problematic, and cursor doesn't show.
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@ -113,24 +121,10 @@
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in the emulator for some years. Conversion to the new modern
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implementation (2013-07-05) has not resolved the issue.
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There are 3 types of microbee disks available in the wild.
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- CPCEMU-format "dsk" disks, which has an already-working
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format "dsk_dsk".
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- ubee512-format disks, such as "ds80,ds82,ds84,ss80", etc.
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These are described in "mbee_dsk", but it's not known if it
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works as yet.
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- There a "img" format for the 128k boot disk. The internal
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layout is not known and no work has been done.
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****************************************************************************/
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#include "includes/mbee.h"
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#include "formats/mbee_dsk.h"
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#include "formats/mbee_cas.h"
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@ -219,6 +213,25 @@ static ADDRESS_MAP_START(mbee128_mem, AS_PROGRAM, 8, mbee_state)
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AM_RANGE(0xf800, 0xffff) AM_RAMBANK("bankfh")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START(mbee256_mem, AS_PROGRAM, 8, mbee_state)
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AM_RANGE(0x0000, 0x0fff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
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AM_RANGE(0x1000, 0x1fff) AM_READ_BANK("bankr1") AM_WRITE_BANK("bankw1")
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AM_RANGE(0x2000, 0x2fff) AM_READ_BANK("bankr2") AM_WRITE_BANK("bankw2")
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AM_RANGE(0x3000, 0x3fff) AM_READ_BANK("bankr3") AM_WRITE_BANK("bankw3")
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AM_RANGE(0x4000, 0x4fff) AM_READ_BANK("bankr4") AM_WRITE_BANK("bankw4")
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AM_RANGE(0x5000, 0x5fff) AM_READ_BANK("bankr5") AM_WRITE_BANK("bankw5")
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AM_RANGE(0x6000, 0x6fff) AM_READ_BANK("bankr6") AM_WRITE_BANK("bankw6")
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AM_RANGE(0x7000, 0x7fff) AM_READ_BANK("bankr7") AM_WRITE_BANK("bankw7")
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AM_RANGE(0x8000, 0x8fff) AM_READ_BANK("bankr8") AM_WRITE_BANK("bankw8")
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AM_RANGE(0x9000, 0x9fff) AM_READ_BANK("bankr9") AM_WRITE_BANK("bankw9")
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AM_RANGE(0xa000, 0xafff) AM_READ_BANK("bankr10") AM_WRITE_BANK("bankw10")
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AM_RANGE(0xb000, 0xbfff) AM_READ_BANK("bankr11") AM_WRITE_BANK("bankw11")
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AM_RANGE(0xc000, 0xcfff) AM_READ_BANK("bankr12") AM_WRITE_BANK("bankw12")
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AM_RANGE(0xd000, 0xdfff) AM_READ_BANK("bankr13") AM_WRITE_BANK("bankw13")
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AM_RANGE(0xe000, 0xefff) AM_READ_BANK("bankr14") AM_WRITE_BANK("bankw14")
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AM_RANGE(0xf000, 0xffff) AM_READ_BANK("bankr15") AM_WRITE_BANK("bankw15")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START(mbeett_mem, AS_PROGRAM, 8, mbee_state)
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AM_RANGE(0x0000, 0x0fff) AM_RAMBANK("boot")
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AM_RANGE(0x1000, 0x7fff) AM_RAM
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@ -614,49 +627,12 @@ GFXDECODE_END
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static GFXDECODE_START( mbeeppc )
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GFXDECODE_ENTRY( "gfx", 0x0000, mbee_charlayout, 0, 8 )
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GFXDECODE_END
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#if 0
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static LEGACY_FLOPPY_OPTIONS_START(mbee)
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LEGACY_FLOPPY_OPTION(ss80, "ss80", "SS80 disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
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HEADS([1])
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TRACKS([80])
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SECTORS([10])
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SECTOR_LENGTH([512])
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FIRST_SECTOR_ID([1]))
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LEGACY_FLOPPY_OPTION(ds40, "ds40", "DS40 disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
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HEADS([2])
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TRACKS([40])
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SECTORS([10])
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SECTOR_LENGTH([512])
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FIRST_SECTOR_ID([1]))
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LEGACY_FLOPPY_OPTION(ds80, "ds80", "DS80 disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
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HEADS([2])
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TRACKS([80])
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SECTORS([10])
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SECTOR_LENGTH([512])
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FIRST_SECTOR_ID([21]))
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LEGACY_FLOPPY_OPTION(ds84, "ds82,ds84", "DS84 disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
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HEADS([2])
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TRACKS([80])
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SECTORS([10])
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SECTOR_LENGTH([512])
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FIRST_SECTOR_ID([1]))
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LEGACY_FLOPPY_OPTIONS_END
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static const floppy_interface mbee_floppy_interface =
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{
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FLOPPY_STANDARD_5_25_DSHD,
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LEGACY_FLOPPY_OPTIONS_NAME(mbee),
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NULL
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};
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#endif
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FLOPPY_FORMATS_MEMBER( mbee_state::floppy_formats )
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FLOPPY_MBEE_FORMAT
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FLOPPY_FORMATS_END
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static SLOT_INTERFACE_START( mbee_floppies )
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SLOT_INTERFACE( "35dd", FLOPPY_35_DD )
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SLOT_INTERFACE( "525dd", FLOPPY_525_QD )
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SLOT_INTERFACE( "drive3a", FLOPPY_35_DD )
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SLOT_INTERFACE( "drive3b", FLOPPY_35_DD )
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SLOT_INTERFACE( "drive5a", FLOPPY_525_QD )
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SLOT_INTERFACE( "drive5b", FLOPPY_525_QD )
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SLOT_INTERFACE_END
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@ -686,7 +662,7 @@ static MACHINE_CONFIG_START( mbee, mbee_state )
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MCFG_GFXDECODE_ADD("gfxdecode", "palette", mbee)
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MCFG_PALETTE_ADD_MONOCHROME_AMBER("palette") // usually sold with amber or green monitor
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MCFG_VIDEO_START_OVERRIDE(mbee_state,mbee)
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MCFG_VIDEO_START_OVERRIDE(mbee_state, mbee)
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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@ -813,8 +789,10 @@ static MACHINE_CONFIG_DERIVED( mbee56, mbeeic )
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MCFG_CPU_IO_MAP(mbee56_io)
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MCFG_MACHINE_RESET_OVERRIDE(mbee_state, mbee56 )
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MCFG_WD2793x_ADD("fdc", XTAL_4MHz / 4) // divided by 2 externally, then divided by 2 internally (/ENMF pin not emulated)
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbee_floppies, "525dd", mbee_state::floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbee_floppies, "35dd", mbee_state::floppy_formats)
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MCFG_WD_FDC_INTRQ_CALLBACK(WRITELINE(mbee_state, fdc_intrq_w))
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MCFG_WD_FDC_DRQ_CALLBACK(WRITELINE(mbee_state, fdc_drq_w))
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbee_floppies, "drive5a", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbee_floppies, "drive5b", floppy_image_device::default_floppy_formats)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( mbee64, mbee56 )
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@ -830,12 +808,15 @@ static MACHINE_CONFIG_DERIVED( mbee128, mbeeppc )
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MCFG_CPU_IO_MAP(mbee128_io)
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MCFG_MACHINE_RESET_OVERRIDE(mbee_state, mbee128 )
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MCFG_WD2793x_ADD("fdc", XTAL_4MHz / 4)
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbee_floppies, "35dd", mbee_state::floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbee_floppies, "525dd", mbee_state::floppy_formats)
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MCFG_WD_FDC_INTRQ_CALLBACK(WRITELINE(mbee_state, fdc_intrq_w))
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MCFG_WD_FDC_DRQ_CALLBACK(WRITELINE(mbee_state, fdc_drq_w))
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbee_floppies, "drive5a", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbee_floppies, "drive5b", floppy_image_device::default_floppy_formats)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( mbee256, mbee128 )
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MCFG_CPU_MODIFY( "maincpu" )
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MCFG_CPU_PROGRAM_MAP(mbee256_mem)
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MCFG_CPU_IO_MAP(mbee256_io)
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MCFG_MACHINE_RESET_OVERRIDE(mbee_state, mbee256 )
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MCFG_MC146818_ADD( "rtc", XTAL_32_768kHz )
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@ -846,6 +827,10 @@ static MACHINE_CONFIG_DERIVED( mbee256, mbee128 )
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MCFG_MC6845_CHAR_WIDTH(8)
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MCFG_MC6845_UPDATE_ROW_CB(mbee_state, mbeeppc_update_row)
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MCFG_MC6845_ADDR_CHANGED_CB(mbee_state, mbee256_update_addr)
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MCFG_DEVICE_REMOVE("fdc:0")
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MCFG_DEVICE_REMOVE("fdc:1")
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbee_floppies, "drive3a", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbee_floppies, "drive3b", floppy_image_device::default_floppy_formats)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( mbeett, mbeeppc )
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@ -1160,16 +1145,19 @@ ROM_START( mbee128 ) // 128K
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ROM_END
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ROM_START( mbee256 ) // 256tc
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ROM_REGION(0x40000,"maincpu", ROMREGION_ERASEFF)
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ROM_REGION(0x40000, "rams", ROMREGION_ERASEFF)
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ROM_REGION(0x7000,"bootrom", ROMREGION_ERASEFF)
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ROM_REGION(0x5000, "roms", 0) // rom plus dummy area
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ROM_SYSTEM_BIOS( 0, "1.20", "Version 1.20" )
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ROMX_LOAD("256tc_boot_1.20.rom", 0x0000, 0x4000, CRC(fe8d6a84) SHA1(a037a1b90b18a2180e9f5f216b829fcd480449a4), ROM_BIOS(1) )
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ROMX_LOAD("256tc_boot_1.20.u38", 0x0000, 0x4000, CRC(fe8d6a84) SHA1(a037a1b90b18a2180e9f5f216b829fcd480449a4), ROM_BIOS(1) )
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ROM_SYSTEM_BIOS( 1, "1.15", "Version 1.15" )
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ROMX_LOAD("256tc_boot_1.15.rom", 0x0000, 0x4000, CRC(1902062d) SHA1(e4a1c0b3f4996e313da0bac0edb6d34e3270723e), ROM_BIOS(2) )
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ROMX_LOAD("256tc_boot_1.15.u38", 0x0000, 0x4000, CRC(1902062d) SHA1(e4a1c0b3f4996e313da0bac0edb6d34e3270723e), ROM_BIOS(2) )
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ROM_REGION(0x4000, "proms", 0)
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ROM_LOAD( "silver.u39", 0x0000, 0x4000, CRC(c34aab64) SHA1(781fe648488dec90185760f8e081e488b73b68bf) )
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ROM_REGION(0x9800, "gfx", 0)
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ROM_LOAD("char256.bin", 0x1000, 0x1000, CRC(9372af3c) SHA1(a63591822c0504de2fed52e88d64e1dbd6124b74) )
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ROM_LOAD("char256.u53", 0x1000, 0x1000, CRC(9372af3c) SHA1(a63591822c0504de2fed52e88d64e1dbd6124b74) )
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ROM_IGNORE( 0x1000 ) // throw away swedish characters for now
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ROM_COPY( "gfx", 0x1000, 0x0000, 0x1000 )
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@ -1184,16 +1172,16 @@ ROM_END
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***************************************************************************/
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/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
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COMP( 1982, mbee, 0, 0, mbee, mbee, mbee_state, mbee, "Applied Technology", "Microbee 16 Standard" , 0 )
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COMP( 1982, mbeeic, mbee, 0, mbeeic, mbee, mbee_state, mbeeic, "Applied Technology", "Microbee 32 IC" , 0 )
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COMP( 1982, mbeepc, mbee, 0, mbeepc, mbee, mbee_state, mbeepc, "Applied Technology", "Microbee Personal Communicator" , 0 )
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COMP( 1985, mbeepc85, mbee, 0, mbeepc85, mbee, mbee_state, mbeepc85, "Applied Technology", "Microbee PC85" , 0 )
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COMP( 1985, mbeepc85b,mbee, 0, mbeepc85b,mbee, mbee_state, mbeepc85, "Applied Technology", "Microbee PC85 (New version)" , 0 )
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COMP( 1985, mbeepc85s,mbee, 0, mbeepc85, mbee, mbee_state, mbeepc85, "Applied Technology", "Microbee PC85 (Swedish)" , 0 )
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COMP( 1986, mbeeppc, mbee, 0, mbeeppc, mbee, mbee_state, mbeeppc, "Applied Technology", "Microbee Premium PC85" , 0 )
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COMP( 1986, mbeett, mbee, 0, mbeett, mbee256, mbee_state, mbeett, "Applied Technology", "Microbee Teleterm" , GAME_NOT_WORKING )
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COMP( 1986, mbee56, mbee, 0, mbee56, mbee, mbee_state, mbee56, "Applied Technology", "Microbee 56k" , GAME_NOT_WORKING )
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COMP( 1986, mbee64, mbee, 0, mbee64, mbee, mbee_state, mbee64, "Applied Technology", "Microbee 64k" , GAME_NOT_WORKING )
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COMP( 1986, mbee128, mbee, 0, mbee128, mbee, mbee_state, mbee128, "Applied Technology", "Microbee 128k" , GAME_NOT_WORKING )
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COMP( 1987, mbee256, mbee, 0, mbee256, mbee256, mbee_state, mbee256, "Applied Technology", "Microbee 256TC" , GAME_NOT_WORKING )
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/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME */
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COMP( 1982, mbee, 0, 0, mbee, mbee, mbee_state, mbee, "Applied Technology", "Microbee 16 Standard" , 0 )
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COMP( 1982, mbeeic, mbee, 0, mbeeic, mbee, mbee_state, mbeeic, "Applied Technology", "Microbee 32 IC" , 0 )
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COMP( 1982, mbeepc, mbee, 0, mbeepc, mbee, mbee_state, mbeepc, "Applied Technology", "Microbee Personal Communicator" , 0 )
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COMP( 1985, mbeepc85, mbee, 0, mbeepc85, mbee, mbee_state, mbeepc85, "Applied Technology", "Microbee PC85" , 0 )
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COMP( 1985, mbeepc85b,mbee, 0, mbeepc85b,mbee, mbee_state, mbeepc85, "Applied Technology", "Microbee PC85 (New version)" , 0 )
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COMP( 1985, mbeepc85s,mbee, 0, mbeepc85, mbee, mbee_state, mbeepc85, "Applied Technology", "Microbee PC85 (Swedish)" , 0 )
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COMP( 1986, mbeeppc, mbee, 0, mbeeppc, mbee, mbee_state, mbeeppc, "Applied Technology", "Microbee Premium PC85" , 0 )
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COMP( 1986, mbeett, mbee, 0, mbeett, mbee256, mbee_state, mbeett, "Applied Technology", "Microbee Teleterm" , GAME_NOT_WORKING )
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COMP( 1986, mbee56, mbee, 0, mbee56, mbee, mbee_state, mbee56, "Applied Technology", "Microbee 56k" , GAME_NOT_WORKING )
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COMP( 1986, mbee64, mbee, 0, mbee64, mbee, mbee_state, mbee64, "Applied Technology", "Microbee 64k" , GAME_NOT_WORKING )
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COMP( 1986, mbee128, mbee, 0, mbee128, mbee, mbee_state, mbee128, "Applied Technology", "Microbee 128k" , GAME_NOT_WORKING )
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COMP( 1987, mbee256, mbee, 0, mbee256, mbee256, mbee_state, mbee256, "Applied Technology", "Microbee 256TC" , GAME_NOT_WORKING )
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@ -34,50 +34,51 @@ public:
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};
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mbee_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_pio(*this, "z80pio"),
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m_cassette(*this, "cassette"),
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m_wave(*this, WAVE_TAG),
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m_speaker(*this, "speaker"),
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m_centronics(*this, "centronics"),
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m_cent_data_out(*this, "cent_data_out"),
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m_crtc(*this, "crtc"),
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m_fdc(*this, "fdc"),
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m_floppy0(*this, "fdc:0"),
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m_floppy1(*this, "fdc:1"),
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m_rtc(*this, "rtc"),
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m_boot(*this, "boot"),
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m_pak(*this, "pak"),
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m_telcom(*this, "telcom"),
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m_basic(*this, "basic"),
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m_bankl(*this, "bankl"),
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m_bankh(*this, "bankh"),
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m_bank1(*this, "bank1"),
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m_bank8l(*this, "bank8l"),
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m_bank8h(*this, "bank8h"),
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m_bank9(*this, "bank9"),
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m_bankfl(*this, "bankfl"),
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m_bankfh(*this, "bankfh"),
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m_io_x0(*this, "X0"),
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m_io_x1(*this, "X1"),
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m_io_x2(*this, "X2"),
|
||||
m_io_x3(*this, "X3"),
|
||||
m_io_x4(*this, "X4"),
|
||||
m_io_x5(*this, "X5"),
|
||||
m_io_x6(*this, "X6"),
|
||||
m_io_x7(*this, "X7"),
|
||||
m_io_extra(*this, "EXTRA"),
|
||||
m_io_config(*this, "CONFIG"),
|
||||
m_io_x8(*this, "X8"),
|
||||
m_io_x9(*this, "X9"),
|
||||
m_io_x10(*this, "X10"),
|
||||
m_io_x11(*this, "X11"),
|
||||
m_io_x12(*this, "X12"),
|
||||
m_io_x13(*this, "X13"),
|
||||
m_io_x14(*this, "X14"),
|
||||
m_screen(*this, "screen"),
|
||||
m_palette(*this, "palette") { }
|
||||
: driver_device(mconfig, type, tag)
|
||||
, m_palette(*this, "palette")
|
||||
, m_maincpu(*this, "maincpu")
|
||||
, m_pio(*this, "z80pio")
|
||||
, m_cassette(*this, "cassette")
|
||||
, m_wave(*this, WAVE_TAG)
|
||||
, m_speaker(*this, "speaker")
|
||||
, m_centronics(*this, "centronics")
|
||||
, m_cent_data_out(*this, "cent_data_out")
|
||||
, m_crtc(*this, "crtc")
|
||||
, m_fdc(*this, "fdc")
|
||||
, m_floppy0(*this, "fdc:0")
|
||||
, m_floppy1(*this, "fdc:1")
|
||||
, m_rtc(*this, "rtc")
|
||||
, m_boot(*this, "boot")
|
||||
, m_pak(*this, "pak")
|
||||
, m_telcom(*this, "telcom")
|
||||
, m_basic(*this, "basic")
|
||||
, m_bankl(*this, "bankl")
|
||||
, m_bankh(*this, "bankh")
|
||||
, m_bank1(*this, "bank1")
|
||||
, m_bank8l(*this, "bank8l")
|
||||
, m_bank8h(*this, "bank8h")
|
||||
, m_bank9(*this, "bank9")
|
||||
, m_bankfl(*this, "bankfl")
|
||||
, m_bankfh(*this, "bankfh")
|
||||
, m_io_x0(*this, "X0")
|
||||
, m_io_x1(*this, "X1")
|
||||
, m_io_x2(*this, "X2")
|
||||
, m_io_x3(*this, "X3")
|
||||
, m_io_x4(*this, "X4")
|
||||
, m_io_x5(*this, "X5")
|
||||
, m_io_x6(*this, "X6")
|
||||
, m_io_x7(*this, "X7")
|
||||
, m_io_extra(*this, "EXTRA")
|
||||
, m_io_config(*this, "CONFIG")
|
||||
, m_io_x8(*this, "X8")
|
||||
, m_io_x9(*this, "X9")
|
||||
, m_io_x10(*this, "X10")
|
||||
, m_io_x11(*this, "X11")
|
||||
, m_io_x12(*this, "X12")
|
||||
, m_io_x13(*this, "X13")
|
||||
, m_io_x14(*this, "X14")
|
||||
, m_screen(*this, "screen")
|
||||
{ }
|
||||
|
||||
DECLARE_WRITE8_MEMBER( mbee_04_w );
|
||||
DECLARE_WRITE8_MEMBER( mbee_06_w );
|
||||
@ -148,6 +149,8 @@ public:
|
||||
TIMER_CALLBACK_MEMBER(mbee_reset);
|
||||
DECLARE_QUICKLOAD_LOAD_MEMBER( mbee );
|
||||
DECLARE_QUICKLOAD_LOAD_MEMBER( mbee_z80bin );
|
||||
WRITE_LINE_MEMBER(fdc_intrq_w);
|
||||
WRITE_LINE_MEMBER(fdc_drq_w);
|
||||
DECLARE_FLOPPY_FORMATS(floppy_formats);
|
||||
UINT8 *m_p_videoram;
|
||||
UINT8 *m_p_gfxram;
|
||||
@ -165,6 +168,7 @@ public:
|
||||
MC6845_ON_UPDATE_ADDR_CHANGED(mbee_update_addr);
|
||||
MC6845_ON_UPDATE_ADDR_CHANGED(mbee256_update_addr);
|
||||
|
||||
required_device<palette_device> m_palette;
|
||||
private:
|
||||
size_t m_size;
|
||||
UINT8 m_clock_pulse;
|
||||
@ -178,8 +182,12 @@ private:
|
||||
UINT8 m_sy6545_status;
|
||||
UINT8 m_sy6545_reg[32];
|
||||
UINT8 m_sy6545_ind;
|
||||
UINT8 m_fdc_rq;
|
||||
void mbee256_setup_banks(UINT8 data);
|
||||
void sy6545_cursor_configure();
|
||||
void keyboard_matrix_r(int offs);
|
||||
void machine_reset_common_disk();
|
||||
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
|
||||
required_device<cpu_device> m_maincpu;
|
||||
required_device<z80pio_device> m_pio;
|
||||
required_device<cassette_image_device> m_cassette;
|
||||
@ -192,7 +200,7 @@ private:
|
||||
optional_device<floppy_connector> m_floppy0;
|
||||
optional_device<floppy_connector> m_floppy1;
|
||||
optional_device<mc146818_device> m_rtc;
|
||||
required_memory_bank m_boot;
|
||||
optional_memory_bank m_boot;
|
||||
optional_memory_bank m_pak;
|
||||
optional_memory_bank m_telcom;
|
||||
optional_memory_bank m_basic;
|
||||
@ -222,11 +230,6 @@ private:
|
||||
optional_ioport m_io_x13;
|
||||
optional_ioport m_io_x14;
|
||||
required_device<screen_device> m_screen;
|
||||
public:
|
||||
required_device<palette_device> m_palette;
|
||||
|
||||
void machine_reset_common_disk();
|
||||
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
|
||||
};
|
||||
|
||||
#endif /* MBEE_H_ */
|
||||
|
||||
@ -89,12 +89,22 @@ READ8_MEMBER( mbee_state::pio_port_b_r )
|
||||
|
||||
*************************************************************************************/
|
||||
|
||||
WRITE_LINE_MEMBER( mbee_state::fdc_intrq_w )
|
||||
{
|
||||
m_fdc_rq = (m_fdc_rq & 2) | state;
|
||||
}
|
||||
|
||||
WRITE_LINE_MEMBER( mbee_state::fdc_drq_w )
|
||||
{
|
||||
m_fdc_rq = (m_fdc_rq & 1) | (state << 1);
|
||||
}
|
||||
|
||||
READ8_MEMBER( mbee_state::mbee_fdc_status_r )
|
||||
{
|
||||
/* d7 indicate if IRQ or DRQ is occuring (1=happening)
|
||||
d6..d0 not used */
|
||||
|
||||
return 0x7f | ((m_fdc->intrq_r() || m_fdc->drq_r()) ? 0x80 : 0);
|
||||
return m_fdc_rq ? 0xff : 0x7f;
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( mbee_state::mbee_fdc_motor_w )
|
||||
@ -131,7 +141,7 @@ WRITE8_MEMBER( mbee_state::mbee_fdc_motor_w )
|
||||
TIMER_CALLBACK_MEMBER(mbee_state::mbee256_kbd)
|
||||
{
|
||||
/* Keyboard scanner is a Mostek M3870 chip. Its speed of operation is determined by a 15k resistor on
|
||||
pin 2 (XTL2) and is therefore unknown. If a key change is detected (up or down), the /strobe
|
||||
pin 2 (XTL2) and is therefore 2MHz. If a key change is detected (up or down), the /strobe
|
||||
line activates, sending a high to bit 1 of port 2 (one of the pio input lines). The next read of
|
||||
port 18 will clear this line, and read the key scancode. It will also signal the 3870 that the key
|
||||
data has been read, on pin 38 (/extint). The 3870 can cache up to 9 keys. With no rom dump
|
||||
@ -256,83 +266,79 @@ TIMER_CALLBACK_MEMBER(mbee_state::mbee_rtc_irq)
|
||||
|
||||
256TC Memory Banking
|
||||
|
||||
Bits 0, 1 and 5 select which bank goes into 0000-7FFF.
|
||||
Bit 2 disables ROM, replacing it with RAM.
|
||||
Bit 3 disables Video, replacing it with RAM.
|
||||
Bit 4 switches the video circuits between F000-FFFF and
|
||||
8000-8FFF.
|
||||
|
||||
In case of a clash, video overrides ROM which overrides RAM.
|
||||
Selection of ROM, RAM, and video access by the CPU is controlled by U39,
|
||||
a PAL14L8. When read as an ordinary rom it is 16k in size. The dumper has
|
||||
arranged the pins as (bit0,1,..) (input = 1,23,2,3,4,5,6,7,8,9,10,11,14,13)
|
||||
and (output = 22,21,20,19,18,17,16,15). The prom is also used to control
|
||||
the refresh required by the dynamic rams, however we ignore this function.
|
||||
|
||||
************************************************************/
|
||||
|
||||
void mbee_state::mbee256_setup_banks(UINT8 data)
|
||||
{
|
||||
data &= 0x3f; // U28 (bits 0-5 are referred to as S0-S5)
|
||||
address_space &mem = m_maincpu->space(AS_PROGRAM);
|
||||
UINT8 *prom = memregion("proms")->base();
|
||||
UINT8 b_data = BITSWAP8(data, 7,5,3,2,4,6,1,0) & 0x3b; // arrange data bits to S0,S1,-,S4,S2,S3
|
||||
UINT8 b_bank, b_byte, b_byte_t, b_addr;
|
||||
UINT16 b_vid;
|
||||
char banktag[10];
|
||||
|
||||
for (b_bank = 0; b_bank < 16; b_bank++)
|
||||
{
|
||||
b_vid = b_bank << 12;
|
||||
mem.unmap_readwrite (b_vid, b_vid + 0xfff);
|
||||
b_addr = BITSWAP8(b_bank, 7,4,5,3,1,2,6,0) & 0x1f; // arrange address bits to A12,-,A14,A13,A15
|
||||
|
||||
// Calculate read-bank
|
||||
b_byte_t = prom[b_addr | (b_data << 8) | 0x82]; // read-bank (RDS and MREQ are low, RFSH is high)
|
||||
b_byte = BITSWAP8(b_byte_t, 7,5,0,3,6,2,1,4); // rearrange so that bits 0-2 are rambank, bit 3 = rom select, bit 4 = video select, others not used
|
||||
if (!BIT(data, 5))
|
||||
b_byte &= 0xfb; // U42/1 - S17 only valid if S5 is on
|
||||
if (!BIT(b_byte, 4))
|
||||
{
|
||||
// select video
|
||||
mem.install_read_handler (b_vid, b_vid + 0x7ff, read8_delegate(FUNC(mbee_state::mbeeppc_low_r), this));
|
||||
mem.install_read_handler (b_vid + 0x800, b_vid + 0xfff, read8_delegate(FUNC(mbee_state::mbeeppc_high_r), this));
|
||||
}
|
||||
else
|
||||
{
|
||||
sprintf(banktag, "bankr%d", b_bank);
|
||||
mem.install_read_bank( b_vid, b_vid+0xfff, banktag );
|
||||
|
||||
if (!BIT(b_byte, 3))
|
||||
membank(banktag)->set_entry(64 + (b_bank & 3)); // read from rom
|
||||
else
|
||||
membank(banktag)->set_entry((b_bank & 7) | ((b_byte & 7) << 3)); // ram
|
||||
}
|
||||
|
||||
// Calculate write-bank
|
||||
b_byte_t = prom[b_addr | (b_data << 8) | 0xc0]; // write-bank (XWR and MREQ are low, RFSH is high)
|
||||
b_byte = BITSWAP8(b_byte_t, 7,5,0,3,6,2,1,4); // rearrange so that bits 0-2 are rambank, bit 3 = rom select, bit 4 = video select, others not used
|
||||
if (!BIT(data, 5))
|
||||
b_byte &= 0xfb; // U42/1 - S17 only valid if S5 is on
|
||||
if (!BIT(b_byte, 4))
|
||||
{
|
||||
// select video
|
||||
mem.install_write_handler (b_vid, b_vid + 0x7ff, write8_delegate(FUNC(mbee_state::mbeeppc_low_w), this));
|
||||
mem.install_write_handler (b_vid + 0x800, b_vid + 0xfff, write8_delegate(FUNC(mbee_state::mbeeppc_high_w), this));
|
||||
}
|
||||
else
|
||||
{
|
||||
sprintf(banktag, "bankw%d", b_bank);
|
||||
mem.install_write_bank( b_vid, b_vid+0xfff, banktag );
|
||||
|
||||
if (!BIT(b_byte, 3))
|
||||
membank(banktag)->set_entry(64); // write to rom dummy area
|
||||
else
|
||||
membank(banktag)->set_entry((b_bank & 7) | ((b_byte & 7) << 3)); // ram
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
WRITE8_MEMBER( mbee_state::mbee256_50_w )
|
||||
{
|
||||
address_space &mem = m_maincpu->space(AS_PROGRAM);
|
||||
|
||||
// primary low banks
|
||||
m_boot->set_entry((data & 3) | ((data & 0x20) >> 3));
|
||||
m_bank1->set_entry((data & 3) | ((data & 0x20) >> 3));
|
||||
|
||||
// 9000-EFFF
|
||||
m_bank9->set_entry((data & 4) ? 1 : 0);
|
||||
|
||||
// 8000-8FFF, F000-FFFF
|
||||
mem.unmap_readwrite (0x8000, 0x87ff);
|
||||
mem.unmap_readwrite (0x8800, 0x8fff);
|
||||
mem.unmap_readwrite (0xf000, 0xf7ff);
|
||||
mem.unmap_readwrite (0xf800, 0xffff);
|
||||
|
||||
switch (data & 0x1c)
|
||||
{
|
||||
case 0x00:
|
||||
mem.install_read_bank (0x8000, 0x87ff, "bank8l");
|
||||
mem.install_read_bank (0x8800, 0x8fff, "bank8h");
|
||||
mem.install_readwrite_handler (0xf000, 0xf7ff, read8_delegate(FUNC(mbee_state::mbeeppc_low_r), this), write8_delegate(FUNC(mbee_state::mbeeppc_low_w), this));
|
||||
mem.install_readwrite_handler (0xf800, 0xffff, read8_delegate(FUNC(mbee_state::mbeeppc_high_r), this), write8_delegate(FUNC(mbee_state::mbeeppc_high_w), this));
|
||||
m_bank8l->set_entry(0); // rom
|
||||
m_bank8h->set_entry(0); // rom
|
||||
break;
|
||||
case 0x04:
|
||||
mem.install_read_bank (0x8000, 0x87ff, "bank8l");
|
||||
mem.install_read_bank (0x8800, 0x8fff, "bank8h");
|
||||
mem.install_readwrite_handler (0xf000, 0xf7ff, read8_delegate(FUNC(mbee_state::mbeeppc_low_r), this), write8_delegate(FUNC(mbee_state::mbeeppc_low_w), this));
|
||||
mem.install_readwrite_handler (0xf800, 0xffff, read8_delegate(FUNC(mbee_state::mbeeppc_high_r), this), write8_delegate(FUNC(mbee_state::mbeeppc_high_w), this));
|
||||
m_bank8l->set_entry(1); // ram
|
||||
m_bank8h->set_entry(1); // ram
|
||||
break;
|
||||
case 0x08:
|
||||
case 0x18:
|
||||
mem.install_read_bank (0x8000, 0x87ff, "bank8l");
|
||||
mem.install_read_bank (0x8800, 0x8fff, "bank8h");
|
||||
mem.install_read_bank (0xf000, 0xf7ff, "bankfl");
|
||||
mem.install_read_bank (0xf800, 0xffff, "bankfh");
|
||||
m_bank8l->set_entry(0); // rom
|
||||
m_bank8h->set_entry(0); // rom
|
||||
m_bankfl->set_entry(0); // ram
|
||||
m_bankfh->set_entry(0); // ram
|
||||
break;
|
||||
case 0x0c:
|
||||
case 0x1c:
|
||||
mem.install_read_bank (0x8000, 0x87ff, "bank8l");
|
||||
mem.install_read_bank (0x8800, 0x8fff, "bank8h");
|
||||
mem.install_read_bank (0xf000, 0xf7ff, "bankfl");
|
||||
mem.install_read_bank (0xf800, 0xffff, "bankfh");
|
||||
m_bank8l->set_entry(1); // ram
|
||||
m_bank8h->set_entry(1); // ram
|
||||
m_bankfl->set_entry(0); // ram
|
||||
m_bankfh->set_entry(0); // ram
|
||||
break;
|
||||
case 0x10:
|
||||
case 0x14:
|
||||
mem.install_readwrite_handler (0x8000, 0x87ff, read8_delegate(FUNC(mbee_state::mbeeppc_low_r), this), write8_delegate(FUNC(mbee_state::mbeeppc_low_w), this));
|
||||
mem.install_readwrite_handler (0x8800, 0x8fff, read8_delegate(FUNC(mbee_state::mbeeppc_high_r), this), write8_delegate(FUNC(mbee_state::mbeeppc_high_w), this));
|
||||
mem.install_read_bank (0xf000, 0xf7ff, "bankfl");
|
||||
mem.install_read_bank (0xf800, 0xffff, "bankfh");
|
||||
m_bankfl->set_entry(0); // ram
|
||||
m_bankfh->set_entry(0); // ram
|
||||
break;
|
||||
}
|
||||
mbee256_setup_banks(data);
|
||||
}
|
||||
|
||||
/***********************************************************
|
||||
@ -508,6 +514,7 @@ TIMER_CALLBACK_MEMBER(mbee_state::mbee_reset)
|
||||
|
||||
void mbee_state::machine_reset_common_disk()
|
||||
{
|
||||
m_fdc_rq = 0;
|
||||
}
|
||||
|
||||
MACHINE_RESET_MEMBER(mbee_state,mbee)
|
||||
@ -533,22 +540,20 @@ MACHINE_RESET_MEMBER(mbee_state,mbee64)
|
||||
|
||||
MACHINE_RESET_MEMBER(mbee_state,mbee128)
|
||||
{
|
||||
address_space &mem = m_maincpu->space(AS_PROGRAM);
|
||||
address_space &mem = m_maincpu->space(AS_IO);
|
||||
machine_reset_common_disk();
|
||||
mbee128_50_w(mem,0,0); // set banks to default
|
||||
m_boot->set_entry(4); // boot time
|
||||
m_boot->set_entry(8); // boot time
|
||||
}
|
||||
|
||||
MACHINE_RESET_MEMBER(mbee_state,mbee256)
|
||||
{
|
||||
UINT8 i;
|
||||
address_space &mem = m_maincpu->space(AS_PROGRAM);
|
||||
machine_reset_common_disk();
|
||||
for (i = 0; i < 15; i++) m_mbee256_was_pressed[i] = 0;
|
||||
m_mbee256_q_pos = 0;
|
||||
mbee256_50_w(mem,0,0); // set banks to default
|
||||
m_boot->set_entry(8); // boot time
|
||||
timer_set(attotime::from_usec(4), TIMER_MBEE_RESET);
|
||||
mbee256_setup_banks(0); // set banks to default
|
||||
m_maincpu->set_pc(0x8000);
|
||||
}
|
||||
|
||||
MACHINE_RESET_MEMBER(mbee_state,mbeett)
|
||||
@ -690,7 +695,7 @@ DRIVER_INIT_MEMBER(mbee_state,mbee128)
|
||||
|
||||
RAM = memregion("bootrom")->base();
|
||||
m_bank9->configure_entry(0, &RAM[0x1000]); // rom
|
||||
m_boot->configure_entry(4, &RAM[0x0000]); // rom at boot for 4usec
|
||||
m_boot->configure_entry(8, &RAM[0x0000]); // rom at boot for 4usec
|
||||
m_bank8l->configure_entry(0, &RAM[0x0000]); // rom
|
||||
m_bank8h->configure_entry(0, &RAM[0x0800]); // rom
|
||||
|
||||
@ -699,23 +704,23 @@ DRIVER_INIT_MEMBER(mbee_state,mbee128)
|
||||
|
||||
DRIVER_INIT_MEMBER(mbee_state,mbee256)
|
||||
{
|
||||
UINT8 *RAM = memregion("maincpu")->base();
|
||||
m_boot->configure_entries(0, 8, &RAM[0x0000], 0x8000); // standard banks 0000
|
||||
m_bank1->configure_entries(0, 8, &RAM[0x1000], 0x8000); // standard banks 1000
|
||||
m_bank8l->configure_entry(1, &RAM[0x0000]); // shadow ram
|
||||
m_bank8h->configure_entry(1, &RAM[0x0800]); // shadow ram
|
||||
m_bank9->configure_entry(1, &RAM[0x1000]); // shadow ram
|
||||
m_bankfl->configure_entry(0, &RAM[0xf000]); // shadow ram
|
||||
m_bankfh->configure_entry(0, &RAM[0xf800]); // shadow ram
|
||||
UINT8 *RAM = memregion("rams")->base();
|
||||
UINT8 *ROM = memregion("roms")->base();
|
||||
char banktag[10];
|
||||
|
||||
RAM = memregion("bootrom")->base();
|
||||
m_bank9->configure_entry(0, &RAM[0x1000]); // rom
|
||||
m_boot->configure_entry(8, &RAM[0x0000]); // rom at boot for 4usec
|
||||
m_bank8l->configure_entry(0, &RAM[0x0000]); // rom
|
||||
m_bank8h->configure_entry(0, &RAM[0x0800]); // rom
|
||||
for (UINT8 b_bank = 0; b_bank < 16; b_bank++)
|
||||
{
|
||||
sprintf(banktag, "bankr%d", b_bank);
|
||||
membank(banktag)->configure_entries(0, 64, &RAM[0x0000], 0x1000); // RAM banks
|
||||
membank(banktag)->configure_entries(64, 4, &ROM[0x0000], 0x1000); // rom
|
||||
|
||||
sprintf(banktag, "bankw%d", b_bank);
|
||||
membank(banktag)->configure_entries(0, 64, &RAM[0x0000], 0x1000); // RAM banks
|
||||
membank(banktag)->configure_entries(64, 1, &ROM[0x4000], 0x1000); // dummy rom
|
||||
}
|
||||
|
||||
timer_set(attotime::from_hz(1), TIMER_MBEE_RTC_IRQ); /* timer for rtc */
|
||||
timer_set(attotime::from_hz(25), TIMER_MBEE256_KBD); /* timer for kbd */
|
||||
timer_set(attotime::from_hz(50), TIMER_MBEE256_KBD); /* timer for kbd */
|
||||
|
||||
m_size = 0x8000;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user