Acorn A4 - 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
aa4	acorn/aa310.cpp		no	no	no	yes	Acorn A4	1992	Acorn Computers	aa5000	aa5000

snap

Key	Length	LastWriteTime	Width	Height	HorizontalResolution	VerticalResolution	PaletteLength	PixelFormat	PropertyItems
aa4	24344	29/12/2025 11:31:15	640	480	96	96	0	Format24bppRgb	305:MAME 0.189 (Aug 30 2017)

display

tag	type	rotate	width	height	refresh	pixclock	htotal	hbend	hbstart	vtotal	vbend	vbstart	flipx
screen	lcd	0	735	292	50.080128	16000000	1024	0	735	312	0	292	no

driver

status	emulation	savestate	requiresartwork	unofficial	nosoundhardware	incomplete	cocktail
preliminary	preliminary	unsupported	no	no	no	no

rom

name	size	crc	sha1	region	offset	status	optional	merge
0296,061-01.ic4	1048576	b77fe215	57b19ea4b97a9b6a240aa61211c2c134cb295aa0	maincpu	0	good	no
0296,062-01.ic15	1048576	d42e196e	64243d39d1bca38b10761f66a8042c883bde87a4	maincpu	2	good	no
0296,063-01.ic38	65536	9ca3a6be	75905b031f49960605d55c3e7350d309559ed440	extension	0	good	no
cmos_riscos3.bin	256	96ed59b2	9dab30b4c3305e1142819687889fca334b532679	i2cmem	0	good	no	cmos_riscos3.bin

disk

name	merge	sha1	region	index	writable	status	optional
riscos311_apps	riscos311_apps	d69e2fb15d82f83d32786a29dd3321a37a9dbb36	upc:ide:0:hdd	0	yes	good	no

chip

type	tag	name	clock
cpu	maincpu	ARM	24000000
cpu	keyboard:mcu	Intel 8051	12000000
audio	vidc:speaker	Speaker
audio	vidc:dac0	16-Bit R-2R Twos Complement DAC
audio	vidc:dac1	16-Bit R-2R Twos Complement DAC
audio	vidc:dac2	16-Bit R-2R Twos Complement DAC
audio	vidc:dac3	16-Bit R-2R Twos Complement DAC
audio	vidc:dac4	16-Bit R-2R Twos Complement DAC
audio	vidc:dac5	16-Bit R-2R Twos Complement DAC
audio	vidc:dac6	16-Bit R-2R Twos Complement DAC
audio	vidc:dac7	16-Bit R-2R Twos Complement DAC
audio	upc:fdc:0:35hd:flopsndout	Speaker
audio	upc:fdc:0:35hd:floppysound	Floppy sound	44100

softwarelist

tag	name	status	filter
flop_list	archimedes	original
hdd_list	archimedes_hdd	original
rom_list	archimedes_rom	original	A4,ARC

device_ref

tag	name
:maincpu	arm_cpu
:memc	memc
:ioc	ioc
:keyboard	archimedes_keyboard
:keyboard:mcu	i8051
:screen	screen
:vidc	acorn_vidc1a
:vidc:speaker	speaker
:vidc:dac0	dac_16bit_r2r_tc
:vidc:dac1	dac_16bit_r2r_tc
:vidc:dac2	dac_16bit_r2r_tc
:vidc:dac3	dac_16bit_r2r_tc
:vidc:dac4	dac_16bit_r2r_tc
:vidc:dac5	dac_16bit_r2r_tc
:vidc:dac6	dac_16bit_r2r_tc
:vidc:dac7	dac_16bit_r2r_tc
:ram	ram
:flop_list	software_list
:hdd_list	software_list
:rom_list	software_list
:exp	archimedes_exp
:i2cmem	pcf8583
:idrom	ds2401
:upc	upc82c711
:upc:ide	ata_interface
:upc:ide:0	ata_slot
:upc:ide:0:hdd	idehd
:upc:ide:0:hdd:image	harddisk_image
:upc:ide:1	ata_slot
:upc:fdc	upd765a
:upc:fdc:0	floppy_connector
:upc:fdc:0:35hd	floppy_35_hd
:upc:fdc:0:35hd:flopsndout	speaker
:upc:fdc:0:35hd:floppysound	flopsnd
:upc:fdc:1	floppy_connector
:upc:parallel	pc_lpt
:upc:parallel:centronics	centronics
:upc:parallel:centronics:printer	centronics_printer
:upc:parallel:centronics:printer:printer	printer_image
:upc:parallel:cent_data_in	input_buffer
:upc:parallel:cent_ctrl_in	input_buffer
:upc:parallel:cent_status_in	input_buffer
:upc:parallel:cent_data_out	output_latch
:upc:parallel:cent_ctrl_out	output_latch
:upc:serial1	ns16450
:upc:serial2	ns16450
:rs232	rs232
:econet	archimedes_econet_slot
:bmu	acorn_bmu
:lc	acorn_lc
:extrom	generic_socket

sound

channels
2

ramoption

name	default
4M
2M	yes

device, instance

type	tag	interface	name	briefname
harddisk	upc:ide:0:hdd:image	ide_hdd,hdd	harddisk	hard
floppydisk	upc:fdc:0:35hd	floppy_3_5	floppydisk	flop
printout	upc:parallel:centronics:printer:printer		printout	prin
romimage	extrom	ext_rom	romimage	rom

device, extension

type	tag	interface	extension_names
harddisk	upc:ide:0:hdd:image	ide_hdd,hdd	chd, hd, hdv, 2mg, hdi
floppydisk	upc:fdc:0:35hd	floppy_3_5	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, ima, img, ufi, 360, ipf, hfe, adf, apd, jfd, ads, adm, adl, ssd, bbc, dsd, st, msa
printout	upc:parallel:centronics:printer:printer		prn
romimage	extrom	ext_rom	bin, rom

input

players	coins	service	tilt
1		no	no

control

type	player	buttons	ways	reverse	minimum	maximum	sensitivity	keydelta	ways2	ways3
mouse				no	0	65535	100
keyboard		106		no

port, analog

port_tag	analog_masks
:keyboard:MOUSE.0	65535
:keyboard:MOUSE.1	65535
:keyboard:MOUSE.2
:keyboard:ROW.0
:keyboard:ROW.1
:keyboard:ROW.10
:keyboard:ROW.11
:keyboard:ROW.12
:keyboard:ROW.13
:keyboard:ROW.14
:keyboard:ROW.15
:keyboard:ROW.2
:keyboard:ROW.3
:keyboard:ROW.4
:keyboard:ROW.5
:keyboard:ROW.6
:keyboard:ROW.7
:keyboard:ROW.8
:keyboard:ROW.9

slot, slotoption

slot_name	slotoption_name	slotoption_devname	slotoption_default
upc:ide:0	px320a	px320a	no
upc:ide:0	zip100	zip100_ide	no
upc:ide:0	cr589	cr589	no
upc:ide:0	cp2024	cp2024	no
upc:ide:0	xm3301	xm3301	no
upc:ide:0	cf	atacf	no
upc:ide:0	cdrom	cdrom	no
upc:ide:0	hdd	idehd	yes
upc:ide:1	px320a	px320a	no
upc:ide:1	zip100	zip100_ide	no
upc:ide:1	cr589	cr589	no
upc:ide:1	cp2024	cp2024	no
upc:ide:1	xm3301	xm3301	no
upc:ide:1	cf	atacf	no
upc:ide:1	cdrom	cdrom	no
upc:ide:1	hdd	idehd	no
upc:fdc:0	525qd	floppy_525_qd	no
upc:fdc:0	525sd	floppy_525_sd	no
upc:fdc:0	35hd	floppy_35_hd	yes
upc:fdc:0	35dd	floppy_35_dd	no
upc:fdc:1	525qd	floppy_525_qd	no
upc:fdc:1	525sd	floppy_525_sd	no
upc:fdc:1	35hd	floppy_35_hd	no
upc:fdc:1	35dd	floppy_35_dd	no
upc:parallel:centronics	spjoy	spjoy	no
upc:parallel:centronics	nlq401	nlq401	no
upc:parallel:centronics	smartboard	centronics_smartboard	no
upc:parallel:centronics	chessmec	centronics_chessmec	no
upc:parallel:centronics	samdac	centronics_samdac	no
upc:parallel:centronics	covox_stereo	covox_stereo	no
upc:parallel:centronics	adaptator	adaptator_multitap	no
upc:parallel:centronics	digiblst	cpcdigiblst	no
upc:parallel:centronics	lx800	lx800	no
upc:parallel:centronics	jx80	epson_jx80	no
upc:parallel:centronics	ap2000	ap2000	no
upc:parallel:centronics	ex800	ex800	no
upc:parallel:centronics	fx80	epson_fx80	no
upc:parallel:centronics	rx80	epson_rx80	no
upc:parallel:centronics	mz1p16	mz1p16	no
upc:parallel:centronics	covox	covox	no
upc:parallel:centronics	pl80	comx_pl80	no
upc:parallel:centronics	lx810l	lx810l	no
upc:parallel:centronics	p72	p72	no
upc:parallel:centronics	printer	centronics_printer	yes
rs232	terminal	serial_terminal	no
rs232	sunkbd	sunkbd_adaptor	no
rs232	votraxtnt	serial_votraxtnt	no
rs232	rs_printer	rs_serial_printer	no
rs232	dec_loopback	dec_rs232_loopback	no
rs232	h19	serial_heath_h19	no
rs232	ie15	ie15_terminal	no
rs232	null_modem	null_modem	no
rs232	keyboard	serial_keyboard	no
rs232	patch	rs232_patch_box	no
rs232	swtpc8212	swtpc8212_terminal	no
rs232	printer	serial_printer	no
rs232	scorpion	scorpion_ic	no
rs232	loopback	rs232_loopback	no
rs232	mockingboard	mockingboardd	no
rs232	msystems_mouse	rs232_mouse_hle_msystems	no
rs232	nss_tvi	nss_tvinterface	no
rs232	rs232_sync_io	rs232_sync_io	no
rs232	pty	pseudo_terminal	no
econet	rtfmjoy	arc_rtfmjoy	no
econet	sampler	arc_serial_sampler	no
econet	midi	arc_serial_midi	no
econet	econet	arc_econet	no
extrom