TI-99/4A Home Computer with EVPC - mame (0284) machine

MAME: 0284 - Released: 2025-12-30T16:33:58 - Machines: 49538 - rom: 367487 - disk: 1392

machine

• XML • JSON • RUN

name	sourcefile	sampleof	isbios	isdevice	ismechanical	runnable	description	year	manufacturer	cloneof	romof
ti99_4ev	ti/ti99_4x.cpp		no	no	no	yes	TI-99/4A Home Computer with EVPC	1994	Texas Instruments	ti99_4a	ti99_4a

snap

Key	Length	LastWriteTime	Width	Height	HorizontalResolution	VerticalResolution	PaletteLength	PixelFormat	PropertyItems
ti99_4ev	4295	29/12/2025 11:31:47	544	568	96	96	0	Format24bppRgb	305:MAME 0.176 (Jul 27 2016)

display

tag	type	rotate	width	height	refresh	pixclock	htotal	hbend	hbstart	vtotal	vbend	vbstart	flipx
ioport:peb:slot2:evpc:screen	raster	0	543	465	59.922749	21477272	684	0	543	524	10	475	no

driver

status	emulation	savestate	requiresartwork	unofficial	nosoundhardware	incomplete	cocktail
good	good	supported	no	no	no	no

rom

name	size	crc	sha1	region	offset	status	optional	merge
994a_rom_hb.u610	4096	ee859c5f	a45245707c3dccea902b718554a882d214a82504	console_rom	0	good	no	994a_rom_hb.u610
994a_rom_lb.u611	4096	37859301	f4e774fd5913b387a763f1b8de5524c54b255434	console_rom	1	good	no	994a_rom_lb.u611
994a_grom0.u500	6144	2445a5e8	ea15d8b0ac52112dc0d5f4ab9a79ac8ca1cc1bbc	cons_grom	0	good	no	994a_grom0.u500
994ev_grom1.u501	6144	6885326d	1a98de5ee886dce705de5cce11034a7be31aceac	cons_grom	2000	good	no
994a_grom2.u502	6144	e0bb5341	e255f0d65d69b927cecb8fcfac7a4c17d585ea96	cons_grom	4000	good	no	994a_grom2.u502

chip

type	tag	name	clock
cpu	maincpu	Texas Instruments TMS9900	3000000
audio	cass_out	Speaker
audio	cassette1	Cassette
audio	cassette2	Cassette
audio	ioport:peb:slot2:evpc:sound_out	Speaker
audio	ioport:peb:slot2:evpc:soundchip	SN94624	447443

softwarelist

tag	name	status	filter
cart_list_ti99	ti99_cart	original

device_ref

tag	name
:maincpu	tms9900
:tms9901	tms9901
:datamux_16_8	ti99_datamux
:gromport	gromport
:gromport:single	ti99_scartconn
:gromport:single:cartridge	ti99cart
:gromport:single:cartridge:grom3	grom
:gromport:single:cartridge:grom4	grom
:gromport:single:cartridge:grom5	grom
:gromport:single:cartridge:grom6	grom
:gromport:single:cartridge:grom7	grom
:scratchpad	ram
:internal_32k_mod	ram
:cart_list_ti99	software_list
:cass_out	speaker
:cassette1	cassette_image
:cassette2	cassette_image
:console_grom_0	grom
:console_grom_1	grom
:console_grom_2	grom
:evpc_conn	ti99_evpc_clock
:ioport	ti99_ioport
:ioport:peb	peribox_ev
:ioport:peb:slot2	peribox_slot
:ioport:peb:slot2:evpc	ti99_evpc
:ioport:peb:slot2:evpc:vdp	v9938
:ioport:peb:slot2:evpc:screen	screen
:ioport:peb:slot2:evpc:sound_out	speaker
:ioport:peb:slot2:evpc:soundchip	sn94624
:ioport:peb:slot2:evpc:colorbus	v9938_colorbus
:ioport:peb:slot3	peribox_slot
:ioport:peb:slot4	peribox_slot
:ioport:peb:slot5	peribox_slot
:ioport:peb:slot6	peribox_slot
:ioport:peb:slot7	peribox_slot
:ioport:peb:slot8	peribox_slot
:joyport	ti99_joyport
:joyport:twinjoy	ti99_twinjoy

sound

channels
2

device, instance

type	tag	interface	name	briefname
cartridge	gromport:single:cartridge	ti99_cart	cartridge	cart
cassette	cassette1		cassette1	cass1
cassette	cassette2		cassette2	cass2

device, extension

type	tag	interface	extension_names
cartridge	gromport:single:cartridge	ti99_cart	rpk
cassette	cassette1		wav, flac
cassette	cassette2		wav, flac

input

players	coins	service	tilt
2		no	no

control

type	player	buttons	ways	reverse
joy	1	1	8	no
keyboard	1	49		no
joy	2	1	8	no

port, analog

port_tag	analog_masks
:ALPHA
:ALPHA1
:ALPHABUG
:COL0
:COL1
:COL2
:COL3
:COL4
:COL5
:LOADINT
:datamux_16_8:GROMENA
:datamux_16_8:RAM
:gromport:CARTRESET
:ioport:peb:slot2:evpc:EVPC-MEM
:ioport:peb:slot2:evpc:EVPC-SW1
:ioport:peb:slot2:evpc:EVPC-SW3
:ioport:peb:slot2:evpc:EVPC-SW4
:ioport:peb:slot2:evpc:EVPC-SW8
:joyport:twinjoy:JOY1
:joyport:twinjoy:JOY2

slot, slotoption

slot_name	slotoption_name	slotoption_devname	slotoption_default
gromport	gkracker	ti99_gkracker	no
gromport	multi	ti99_mcartconn	no
gromport	single	ti99_scartconn	yes
ioport	speechsyn	ti99_speech	no
ioport	arcturus	ti99_arcturus	no
ioport	splitter	ti99_iosplit	no
ioport	peb	peribox_ev	yes
ioport:peb:slot2	whtscsi	ti99_whtscsi	no
ioport:peb:slot2	forti	ti99_forti	no
ioport:peb:slot2	ddcc1	ti99_ddcc1	no
ioport:peb:slot2	ccfdc	ti99_ccfdc	no
ioport:peb:slot2	ccdcc	ti99_ccdcc	no
ioport:peb:slot2	tifdc	ti99_fdc	no
ioport:peb:slot2	hfdc	ti99_hfdc	no
ioport:peb:slot2	evpc	ti99_evpc	yes
ioport:peb:slot2	32kmem	ti99_32kmem	no
ioport:peb:slot2	pgram	ti99_pgram	no
ioport:peb:slot2	myarcmem	ti99_myarcmem	no
ioport:peb:slot2	samsmem	ti99_sams	no
ioport:peb:slot2	pcode	ti99_pcode	no
ioport:peb:slot2	tipi	ti99_tipi	no
ioport:peb:slot2	usbsm	ti99_usbsm	no
ioport:peb:slot2	hsgpl	ti99_hsgpl	no
ioport:peb:slot2	tirs232	ti99_rs232	no
ioport:peb:slot2	bwg	ti99_bwg	no
ioport:peb:slot2	sidmaster	ti99_sidmaster	no
ioport:peb:slot2	speechadapter	ti99_speechconn	no
ioport:peb:slot2	horizon	ti99_horizon	no
ioport:peb:slot2	ide	ti99_ide	no
ioport:peb:slot2:evpc:colorbus	busmouse	v9938_busmouse	no
ioport:peb:slot3	whtscsi	ti99_whtscsi	no
ioport:peb:slot3	forti	ti99_forti	no
ioport:peb:slot3	ddcc1	ti99_ddcc1	no
ioport:peb:slot3	ccfdc	ti99_ccfdc	no
ioport:peb:slot3	ccdcc	ti99_ccdcc	no
ioport:peb:slot3	tifdc	ti99_fdc	no
ioport:peb:slot3	hfdc	ti99_hfdc	no
ioport:peb:slot3	evpc	ti99_evpc	no
ioport:peb:slot3	32kmem	ti99_32kmem	no
ioport:peb:slot3	pgram	ti99_pgram	no
ioport:peb:slot3	myarcmem	ti99_myarcmem	no
ioport:peb:slot3	samsmem	ti99_sams	no
ioport:peb:slot3	pcode	ti99_pcode	no
ioport:peb:slot3	tipi	ti99_tipi	no
ioport:peb:slot3	usbsm	ti99_usbsm	no
ioport:peb:slot3	hsgpl	ti99_hsgpl	no
ioport:peb:slot3	tirs232	ti99_rs232	no
ioport:peb:slot3	bwg	ti99_bwg	no
ioport:peb:slot3	sidmaster	ti99_sidmaster	no
ioport:peb:slot3	speechadapter	ti99_speechconn	no
ioport:peb:slot3	horizon	ti99_horizon	no
ioport:peb:slot3	ide	ti99_ide	no
ioport:peb:slot4	whtscsi	ti99_whtscsi	no
ioport:peb:slot4	forti	ti99_forti	no
ioport:peb:slot4	ddcc1	ti99_ddcc1	no
ioport:peb:slot4	ccfdc	ti99_ccfdc	no
ioport:peb:slot4	ccdcc	ti99_ccdcc	no
ioport:peb:slot4	tifdc	ti99_fdc	no
ioport:peb:slot4	hfdc	ti99_hfdc	no
ioport:peb:slot4	evpc	ti99_evpc	no
ioport:peb:slot4	32kmem	ti99_32kmem	no
ioport:peb:slot4	pgram	ti99_pgram	no
ioport:peb:slot4	myarcmem	ti99_myarcmem	no
ioport:peb:slot4	samsmem	ti99_sams	no
ioport:peb:slot4	pcode	ti99_pcode	no
ioport:peb:slot4	tipi	ti99_tipi	no
ioport:peb:slot4	usbsm	ti99_usbsm	no
ioport:peb:slot4	hsgpl	ti99_hsgpl	no
ioport:peb:slot4	tirs232	ti99_rs232	no
ioport:peb:slot4	bwg	ti99_bwg	no
ioport:peb:slot4	sidmaster	ti99_sidmaster	no
ioport:peb:slot4	speechadapter	ti99_speechconn	no
ioport:peb:slot4	horizon	ti99_horizon	no
ioport:peb:slot4	ide	ti99_ide	no
ioport:peb:slot5	whtscsi	ti99_whtscsi	no
ioport:peb:slot5	forti	ti99_forti	no
ioport:peb:slot5	ddcc1	ti99_ddcc1	no
ioport:peb:slot5	ccfdc	ti99_ccfdc	no
ioport:peb:slot5	ccdcc	ti99_ccdcc	no
ioport:peb:slot5	tifdc	ti99_fdc	no
ioport:peb:slot5	hfdc	ti99_hfdc	no
ioport:peb:slot5	evpc	ti99_evpc	no
ioport:peb:slot5	32kmem	ti99_32kmem	no
ioport:peb:slot5	pgram	ti99_pgram	no
ioport:peb:slot5	myarcmem	ti99_myarcmem	no
ioport:peb:slot5	samsmem	ti99_sams	no
ioport:peb:slot5	pcode	ti99_pcode	no
ioport:peb:slot5	tipi	ti99_tipi	no
ioport:peb:slot5	usbsm	ti99_usbsm	no
ioport:peb:slot5	hsgpl	ti99_hsgpl	no
ioport:peb:slot5	tirs232	ti99_rs232	no
ioport:peb:slot5	bwg	ti99_bwg	no
ioport:peb:slot5	sidmaster	ti99_sidmaster	no
ioport:peb:slot5	speechadapter	ti99_speechconn	no
ioport:peb:slot5	horizon	ti99_horizon	no
ioport:peb:slot5	ide	ti99_ide	no
ioport:peb:slot6	whtscsi	ti99_whtscsi	no
ioport:peb:slot6	forti	ti99_forti	no
ioport:peb:slot6	ddcc1	ti99_ddcc1	no
ioport:peb:slot6	ccfdc	ti99_ccfdc	no
ioport:peb:slot6	ccdcc	ti99_ccdcc	no
ioport:peb:slot6	tifdc	ti99_fdc	no
ioport:peb:slot6	hfdc	ti99_hfdc	no
ioport:peb:slot6	evpc	ti99_evpc	no
ioport:peb:slot6	32kmem	ti99_32kmem	no
ioport:peb:slot6	pgram	ti99_pgram	no
ioport:peb:slot6	myarcmem	ti99_myarcmem	no
ioport:peb:slot6	samsmem	ti99_sams	no
ioport:peb:slot6	pcode	ti99_pcode	no
ioport:peb:slot6	tipi	ti99_tipi	no
ioport:peb:slot6	usbsm	ti99_usbsm	no
ioport:peb:slot6	hsgpl	ti99_hsgpl	no
ioport:peb:slot6	tirs232	ti99_rs232	no
ioport:peb:slot6	bwg	ti99_bwg	no
ioport:peb:slot6	sidmaster	ti99_sidmaster	no
ioport:peb:slot6	speechadapter	ti99_speechconn	no
ioport:peb:slot6	horizon	ti99_horizon	no
ioport:peb:slot6	ide	ti99_ide	no
ioport:peb:slot7	whtscsi	ti99_whtscsi	no
ioport:peb:slot7	forti	ti99_forti	no
ioport:peb:slot7	ddcc1	ti99_ddcc1	no
ioport:peb:slot7	ccfdc	ti99_ccfdc	no
ioport:peb:slot7	ccdcc	ti99_ccdcc	no
ioport:peb:slot7	tifdc	ti99_fdc	no
ioport:peb:slot7	hfdc	ti99_hfdc	no
ioport:peb:slot7	evpc	ti99_evpc	no
ioport:peb:slot7	32kmem	ti99_32kmem	no
ioport:peb:slot7	pgram	ti99_pgram	no
ioport:peb:slot7	myarcmem	ti99_myarcmem	no
ioport:peb:slot7	samsmem	ti99_sams	no
ioport:peb:slot7	pcode	ti99_pcode	no
ioport:peb:slot7	tipi	ti99_tipi	no
ioport:peb:slot7	usbsm	ti99_usbsm	no
ioport:peb:slot7	hsgpl	ti99_hsgpl	no
ioport:peb:slot7	tirs232	ti99_rs232	no
ioport:peb:slot7	bwg	ti99_bwg	no
ioport:peb:slot7	sidmaster	ti99_sidmaster	no
ioport:peb:slot7	speechadapter	ti99_speechconn	no
ioport:peb:slot7	horizon	ti99_horizon	no
ioport:peb:slot7	ide	ti99_ide	no
ioport:peb:slot8	whtscsi	ti99_whtscsi	no
ioport:peb:slot8	forti	ti99_forti	no
ioport:peb:slot8	ddcc1	ti99_ddcc1	no
ioport:peb:slot8	ccfdc	ti99_ccfdc	no
ioport:peb:slot8	ccdcc	ti99_ccdcc	no
ioport:peb:slot8	tifdc	ti99_fdc	no
ioport:peb:slot8	hfdc	ti99_hfdc	no
ioport:peb:slot8	evpc	ti99_evpc	no
ioport:peb:slot8	32kmem	ti99_32kmem	no
ioport:peb:slot8	pgram	ti99_pgram	no
ioport:peb:slot8	myarcmem	ti99_myarcmem	no
ioport:peb:slot8	samsmem	ti99_sams	no
ioport:peb:slot8	pcode	ti99_pcode	no
ioport:peb:slot8	tipi	ti99_tipi	no
ioport:peb:slot8	usbsm	ti99_usbsm	no
ioport:peb:slot8	hsgpl	ti99_hsgpl	no
ioport:peb:slot8	tirs232	ti99_rs232	no
ioport:peb:slot8	bwg	ti99_bwg	no
ioport:peb:slot8	sidmaster	ti99_sidmaster	no
ioport:peb:slot8	speechadapter	ti99_speechconn	no
ioport:peb:slot8	horizon	ti99_horizon	no
ioport:peb:slot8	ide	ti99_ide	no
joyport	twinjoy	ti99_twinjoy	yes

configuration

Alpha Lock blocks joystick up

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Alpha Lock blocks joystick up	ALPHABUG	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	no
On	1	yes

Console GROMs

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Console GROMs	datamux_16_8:GROMENA	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	no
On	1	yes

Console 32 KiB RAM upgrade (16 bit)

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Console 32 KiB RAM upgrade (16 bit)	datamux_16_8:RAM	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	1	no

RESET on cartridge insert

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
RESET on cartridge insert	gromport:CARTRESET	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	no
On	1	yes

EVPC video memory

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
EVPC video memory	ioport:peb:slot2:evpc:EVPC-MEM	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
128K	0	yes
192K	1	no

dipswitch

EVPC video mode

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
EVPC video mode	ioport:peb:slot2:evpc:EVPC-SW1	1	EVPC-SW8	1	eq	0

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
PAL	0	yes
NTSC	1	no

EVPC charset

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
EVPC charset	ioport:peb:slot2:evpc:EVPC-SW3	1	EVPC-SW8	1	eq	0

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
International	0	yes
German	1	no

EVPC VDP RAM

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
EVPC VDP RAM	ioport:peb:slot2:evpc:EVPC-SW4	1	EVPC-SW8	1	eq	0

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
shifted	0	yes
not shifted	1	no

EVPC Configuration

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
EVPC Configuration	ioport:peb:slot2:evpc:EVPC-SW8	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
DIP	0	yes
NOVRAM	1	no