Acorn System 4 - 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
acrnsys4	acorn/acrnsys.cpp		no	no	no	yes	Acorn System 4	1980	Acorn Computers	acrnsys3	acrnsys3

snap

Key	Length	LastWriteTime	Width	Height	HorizontalResolution	VerticalResolution	PaletteLength	PixelFormat	PropertyItems
acrnsys4	1156	29/12/2025 11:31:15	480	500	96	96	0	Format24bppRgb	305:MAME 0.200 (Jul 25 2018)

display

tag	type	rotate	width	height	refresh	pixclock	htotal	hbend	hbstart	vtotal	vbend	vbstart	flipx
bus3:vdu40:screen	raster	0	480	250	50.241158	12000000	768	132	612	311	20	270	no

driver

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

rom

name	size	crc	sha1	region	offset	status	optional	merge	bios
tosdos-s3.ic7	4096	9b1fbec4	4cb322dadcfba9c452797d6cc2096f0c92e8792c	maincpu	0	good	no	tosdos-s3.ic7

chip

type	tag	name	clock
cpu	maincpu	MOS Technology 6502	1000000
audio	bus4:fdc:i8271:0:525qd:flopsndout	Speaker
audio	bus4:fdc:i8271:0:525qd:floppysound	Floppy sound	44100
audio	bus4:fdc:i8271:1:525qd:flopsndout	Speaker
audio	bus4:fdc:i8271:1:525qd:floppysound	Floppy sound	44100

softwarelist

tag	name	status	filter
flop_list	acrnsys_flop	original
rom_list	acrnsys_rom	original

device_ref

tag	name
:maincpu	m6502
:irqs	ipt_merge_any_hi
:ins8154	ins8154
:kbd	acrnsys_kbd
:kbd:ay34592	ay34592
:bus	acorn_bus
:bus1	acorn_bus_slot
:bus1:8k	acorn_8k
:bus1:8k:rom0	generic_socket
:bus1:8k:rom1	generic_socket
:bus2	acorn_bus_slot
:bus2:8k	acorn_8k
:bus2:8k:rom0	generic_socket
:bus2:8k:rom1	generic_socket
:bus3	acorn_bus_slot
:bus3:vdu40	acorn_vdu40
:bus3:vdu40:screen	screen
:bus3:vdu40:palette	palette
:bus3:vdu40:mc6845	hd6845s
:bus3:vdu40:saa5050	saa5050
:bus4	acorn_bus_slot
:bus4:fdc	acorn_fdc
:bus4:fdc:i8271	i8271
:bus4:fdc:i8271:0	floppy_connector
:bus4:fdc:i8271:0:525qd	floppy_525_qd
:bus4:fdc:i8271:0:525qd:flopsndout	speaker
:bus4:fdc:i8271:0:525qd:floppysound	flopsnd
:bus4:fdc:i8271:1	floppy_connector
:bus4:fdc:i8271:1:525qd	floppy_525_qd
:bus4:fdc:i8271:1:525qd:flopsndout	speaker
:bus4:fdc:i8271:1:525qd:floppysound	flopsnd
:bus5	acorn_bus_slot
:bus6	acorn_bus_slot
:bus7	acorn_bus_slot
:bus8	acorn_bus_slot
:bus9	acorn_bus_slot
:bus10	acorn_bus_slot
:bus11	acorn_bus_slot
:bus12	acorn_bus_slot
:bus13	acorn_bus_slot
:flop_list	software_list
:rom_list	software_list

sound

channels
2

device, instance

type	tag	interface	name	briefname
romimage	bus1:8k:rom0	acrnsys_rom	romimage1	rom1
romimage	bus1:8k:rom1	acrnsys_rom	romimage2	rom2
romimage	bus2:8k:rom0	acrnsys_rom	romimage3	rom3
romimage	bus2:8k:rom1	acrnsys_rom	romimage4	rom4
floppydisk	bus4:fdc:i8271:0:525qd	floppy_5_25	floppydisk1	flop1
floppydisk	bus4:fdc:i8271:1:525qd	floppy_5_25	floppydisk2	flop2

device, extension

type	tag	interface	extension_names
romimage	bus1:8k:rom0	acrnsys_rom	bin, rom
romimage	bus1:8k:rom1	acrnsys_rom	bin, rom
romimage	bus2:8k:rom0	acrnsys_rom	bin, rom
romimage	bus2:8k:rom1	acrnsys_rom	bin, rom
floppydisk	bus4:fdc:i8271:0:525qd	floppy_5_25	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, ssd, bbc, img
floppydisk	bus4:fdc:i8271:1:525qd	floppy_5_25	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, ssd, bbc, img

input

players	coins	service	tilt
1		no	no

control

type	player	buttons	ways	reverse	minimum	maximum	sensitivity	keydelta	ways2	ways3
keyboard		62		no

port, analog

port_tag	analog_masks
:bus1:8k:LINKS
:bus2:8k:LINKS
:kbd:SPECIAL
:kbd:X0
:kbd:X1
:kbd:X10
:kbd:X11
:kbd:X12
:kbd:X2
:kbd:X3
:kbd:X4
:kbd:X5
:kbd:X6
:kbd:X7
:kbd:X8
:kbd:X9

slot, slotoption

slot_name	slotoption_name	slotoption_devname	slotoption_default
bus1	vib	acorn_vib	no
bus1	vdu80	acorn_vdu80	no
bus1	vdu40	acorn_vdu40	no
bus1	fdc	acorn_fdc	no
bus1	econet	acorn_econet	no
bus1	cass	acorn_cass	no
bus1	8k	acorn_8k	yes
bus1	32k	acorn_32k	no
bus1:8k:rom0
bus1:8k:rom1
bus2	vib	acorn_vib	no
bus2	vdu80	acorn_vdu80	no
bus2	vdu40	acorn_vdu40	no
bus2	fdc	acorn_fdc	no
bus2	econet	acorn_econet	no
bus2	cass	acorn_cass	no
bus2	8k	acorn_8k	yes
bus2	32k	acorn_32k	no
bus2:8k:rom0
bus2:8k:rom1
bus3	vib	acorn_vib	no
bus3	vdu80	acorn_vdu80	no
bus3	vdu40	acorn_vdu40	yes
bus3	fdc	acorn_fdc	no
bus3	econet	acorn_econet	no
bus3	cass	acorn_cass	no
bus3	8k	acorn_8k	no
bus3	32k	acorn_32k	no
bus4	vib	acorn_vib	no
bus4	vdu80	acorn_vdu80	no
bus4	vdu40	acorn_vdu40	no
bus4	fdc	acorn_fdc	yes
bus4	econet	acorn_econet	no
bus4	cass	acorn_cass	no
bus4	8k	acorn_8k	no
bus4	32k	acorn_32k	no
bus4:fdc:i8271:0	525qd	floppy_525_qd	yes
bus4:fdc:i8271:0	525sd	floppy_525_sd	no
bus4:fdc:i8271:0	525sssd	floppy_525_sssd	no
bus4:fdc:i8271:1	525qd	floppy_525_qd	yes
bus4:fdc:i8271:1	525sd	floppy_525_sd	no
bus4:fdc:i8271:1	525sssd	floppy_525_sssd	no
bus5	vib	acorn_vib	no
bus5	vdu80	acorn_vdu80	no
bus5	vdu40	acorn_vdu40	no
bus5	fdc	acorn_fdc	no
bus5	econet	acorn_econet	no
bus5	cass	acorn_cass	no
bus5	8k	acorn_8k	no
bus5	32k	acorn_32k	no
bus6	vib	acorn_vib	no
bus6	vdu80	acorn_vdu80	no
bus6	vdu40	acorn_vdu40	no
bus6	fdc	acorn_fdc	no
bus6	econet	acorn_econet	no
bus6	cass	acorn_cass	no
bus6	8k	acorn_8k	no
bus6	32k	acorn_32k	no
bus7	vib	acorn_vib	no
bus7	vdu80	acorn_vdu80	no
bus7	vdu40	acorn_vdu40	no
bus7	fdc	acorn_fdc	no
bus7	econet	acorn_econet	no
bus7	cass	acorn_cass	no
bus7	8k	acorn_8k	no
bus7	32k	acorn_32k	no
bus8	vib	acorn_vib	no
bus8	vdu80	acorn_vdu80	no
bus8	vdu40	acorn_vdu40	no
bus8	fdc	acorn_fdc	no
bus8	econet	acorn_econet	no
bus8	cass	acorn_cass	no
bus8	8k	acorn_8k	no
bus8	32k	acorn_32k	no
bus9	vib	acorn_vib	no
bus9	vdu80	acorn_vdu80	no
bus9	vdu40	acorn_vdu40	no
bus9	fdc	acorn_fdc	no
bus9	econet	acorn_econet	no
bus9	cass	acorn_cass	no
bus9	8k	acorn_8k	no
bus9	32k	acorn_32k	no
bus10	vib	acorn_vib	no
bus10	vdu80	acorn_vdu80	no
bus10	vdu40	acorn_vdu40	no
bus10	fdc	acorn_fdc	no
bus10	econet	acorn_econet	no
bus10	cass	acorn_cass	no
bus10	8k	acorn_8k	no
bus10	32k	acorn_32k	no
bus11	vib	acorn_vib	no
bus11	vdu80	acorn_vdu80	no
bus11	vdu40	acorn_vdu40	no
bus11	fdc	acorn_fdc	no
bus11	econet	acorn_econet	no
bus11	cass	acorn_cass	no
bus11	8k	acorn_8k	no
bus11	32k	acorn_32k	no
bus12	vib	acorn_vib	no
bus12	vdu80	acorn_vdu80	no
bus12	vdu40	acorn_vdu40	no
bus12	fdc	acorn_fdc	no
bus12	econet	acorn_econet	no
bus12	cass	acorn_cass	no
bus12	8k	acorn_8k	no
bus12	32k	acorn_32k	no
bus13	vib	acorn_vib	no
bus13	vdu80	acorn_vdu80	no
bus13	vdu40	acorn_vdu40	no
bus13	fdc	acorn_fdc	no
bus13	econet	acorn_econet	no
bus13	cass	acorn_cass	no
bus13	8k	acorn_8k	no
bus13	32k	acorn_32k	no

configuration

Address Selection (RAM)

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Address Selection (RAM)	bus1:8k:LINKS	7

setting

name	value	default
&0000-&1FFF	0	no
&2000-&3FFF	1	yes
&4000-&5FFF	2	no
&6000-&7FFF	3	no
&8000-&9FFF	4	no
&A000-&BFFF	5	no
&C000-&DFFF	6	no
&E000-&FFFF	7	no

Address Selection (ROM)

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Address Selection (ROM)	bus1:8k:LINKS	112

setting

name	value	default
&0000-&1FFF	0	no
&2000-&3FFF	16	no
&4000-&5FFF	32	no
&6000-&7FFF	48	no
&8000-&9FFF	64	no
&A000-&BFFF	80	yes
&C000-&DFFF	96	no
&E000-&FFFF	112	no

Address Selection (RAM)

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Address Selection (RAM)	bus2:8k:LINKS	7

setting

name	value	default
&0000-&1FFF	0	no
&2000-&3FFF	1	no
&4000-&5FFF	2	no
&6000-&7FFF	3	no
&8000-&9FFF	4	no
&A000-&BFFF	5	no
&C000-&DFFF	6	yes
&E000-&FFFF	7	no

Address Selection (ROM)

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Address Selection (ROM)	bus2:8k:LINKS	112

setting

name	value	default
&0000-&1FFF	0	no
&2000-&3FFF	16	no
&4000-&5FFF	32	no
&6000-&7FFF	48	no
&8000-&9FFF	64	no
&A000-&BFFF	80	yes
&C000-&DFFF	96	no
&E000-&FFFF	112	no