CRT ID

The CRT ID identifies an emulator .crt file, allows it to check the file to a certain degree and distinguish wether emulation is provided or not. Knowing the CRT ID is of no real use for the end user but might pose useful for hacking around.

Cartconv supplied with VICE will convert binaries to .crt format by passing it the correct keyword.

For more details refer to the VICE manual, chapter 17.14 The CRT cartridge image format. The current cartridge.h from the VICE emulator may serve as well.

The table below gives an overview on the VICE emulation as of September 2024, and also shows the capabilities of some more or less recent hardware extensions.

Hardware				supported by
CRT ID	Cartridge	VICE Source		Retro Replay	MMC Replay	Easyflash 3	1541U (2.4c)	1541U-II (2.6k)	1541U2+ and U64 (3.10i)	Chameleon (9g)
0	generic 8k/16k/ultimax cartridge	c64-generic.c		yes	yes	yes	yes	8k and ultimax are broken	yes	yes
1	Action Replay	actionreplay.c		yes	yes	yes	yes	yes	yes	yes
2	KCS Power Cartridge	kcs.c		no	no	no	no	no	yes	yes
3	Final Cartridge 3	final3.c		no	no	no	yes	yes	yes	yes
4	Simons Basic	simonsbasic.c		no	no	no	no	no	yes	yes
5	Ocean	ocean.c		no	no	yes	yes	yes	yes	yes
6	Expert Cartridge	expert.c		no	no	no	no	no	no	yes
7	Funplay/Powerplay	funplay.c		no	no	no	no	no	no	yes
8	Super Games	supergames.c		no	no	no	no	no	yes	yes
9	Atomic Power	atomicpower.c		yes (Nordic Replay only)	yes	yes	no	loads but does not work	yes	yes
10	Epyx FastLoad	epyxfastload.c		no	no	no	yes	yes	yes	yes
11	Westermann	westermann.c		no	no	no	no	no	yes	yes
12	Rex Utility	rexutility.c		no	no	no	no	no	no	no
13	The Final Cartridge	final.c		no	no	no	no	no	yes	no
14	Magic Formel	magicformel.c		no	no	no	no	no	no	no
15	C64GS/System3	gs.c		no	no	no	yes	yes	yes	yes
16	WarpSpeed	warpspeed.c		no	no	no	no	no	no	yes
17	Dinamic	dinamic.c		no	no	no	no	no	no	yes
18	Zaxxon	zaxxon.c		no	no	no	no	no	yes	yes
19	Magic Desk	magicdesk.c		no	no	no	yes	yes	yes	yes
20	Super Snapshot V5	supersnapshot.c		no	no	yes	yes	yes	yes	yes
21	Comal80	comal80.c		no	no	no	no	no	yes	yes
22	Structured Basic	stb.c		no	no	no	no	no	no	no
23	ROSS	ross.c		no	no	no	no	no	no	yes
24	Dela EP64	delaep64.c		no	no	no	no	no	no	no
25	Dela EP7x8	delaep7x8.c		no	no	no	no	no	no	no
26	Dela EP256	delaep256.c		no	no	no	no	no	no	no
27	REX EP256	rexep256.c		no	no	no	no	no	no	no
28	Mikro Assembler	mikroass.c		no	no	no	no	no	no	yes
29	Final Cartridge Plus	finalplus.c		no	no	no	no	no	no	no
30	Action Replay 4	actionreplay4.c		no	no	no	no	no	no	no
31	StarDOS	stardos.c		no	no	no	no	no	no	yes
32	Easyflash	easyflash.c		no	no	yes	yes (no write support)	yes (no write support)	yes (write support through EAPI)	yes (write support through EAPI)
33	Easyflash X-Bank	easyflash.c		no	no	yes	no	no	no	no
34	Capture	capture.c		no	no	no	no	no	no	yes
35	Action Replay 3	actionreplay3.c		no	no	no	no	no	no	no
36	Retro Replay	retroreplay.c		yes	yes	yes	yes	yes	yes	yes
37	MMC64	mmc64.c		no	no	no	no	no	no	yes
38	MMC Replay	mmcreplay.c		no	yes	no	no	no	no	no
39	IDE64	ide64.c		no	no	no	no	no	no	no
40	Super Snapshot V4	supersnapshot4.c		no	no	no	no	no	no	no
41	IEEE488	c64tpi.c, tpicore.c		no	no	no	no	no	no	no
42	Game Killer	gamekiller.c		no	no	no	no	no	no	no
43	Prophet 64	prophet64.c		no	no	no	no	no	no	yes
44	Exos	exos.c		no	no	yes (external kernal)	no	yes (external kernal)	yes (external kernal)	yes (external kernal)
45	Freeze Frame	freezeframe.c		no	no	no	no	no	no	no
46	Freeze Machine	freezemachine.c		no	no	no	no	no	no	no
47	Snapshot64	snapshot64.c		no	no	no	no	no	no	no
48	Super Explode V5	superexplode5.c		no	no	no	no	no	no	no
49	Magic Voice	magicvoice.c, tpicore.c, t6721.c		no	no	no	no	no	no	no
50	Action Replay 2	actionreplay2.c		no	no	no	no	no	no	no
51	MACH 5	mach5.c		no	no	no	no	no	no	yes
52	Diashow Maker	diashowmaker.c		no	no	no	no	no	no	no
53	Pagefox	pagefox.c		no	no	no	no	no	yes	yes
54	Kingsoft Business Basic / Cardco S'more	kingsoft.c		no	no	no	no	no	yes	yes
55	Silver Rock 128	silverrock128.c		no	no	no	no	no	no	no
56	Formel 64	formel64.c		no	no	no	no	no	no	no
57	RGCD	rgcd.c		no	no	no	no	no	no	no
58	RR-Net MK3	rrnetmk3.c		no	no	no	no	no	no	no
59	Easy Calc	easycalc.c		no	no	no	no	no	no	no
60	GMod2	gmod2.c		no	no	no	no	no	yes	no
61	MAX BASIC	maxbasic.c		no	no	no	no	no	no	no
62	GMod3	gmod3.c		no	no	no	no	no	no	no
63	ZIPP-CODE 48	zippcode48.c		no	no	no	no	no	no	no
64	Blackbox v8	blackbox8.c		no	no	no	no	no	yes	no
65	Blackbox v3	blackbox3.c		no	no	no	no	no	yes	no
66	Blackbox v4	blackbox4.c		no	no	no	no	no	yes	no
67	REX RAM Floppy	rexramfloppy.c		no	no	no	no	no	no	no
68	BIS Plus	bisplus.c		no	no	no	no	no	no	no
69	SD Box	sdbox.c		no	no	no	no	no	no	no
70	MultiMAX	multimax.c		no	no	no	no	no	no	no
71	Blackbox v9	blackbox9.c		no	no	no	no	no	yes	no
72	LT Kernal	ltkernal.c		no	no	no	no	no	no	no
73	CMD RAMlink	ramlink.c		no	no	no	no	no	no	no
74	Drean (H.E.R.O. bootleg)	hero.c		no	no	no	no	no	no	no
75	IEEE Flash 64	ieeeflash64.c		no	no	no	no	no	no	no
76	Turtle Graphics II	turtlegraphics.c		no	no	no	no	no	no	no
77	Freeze Frame MK2	freezeframe2.c		no	no	no	no	no	no	no
78	Partner 64	partner64.c		no	no	no	no	no	no	no
79	Hyper-BASIC	hyperbasic.c		no	no	no	no	no	no	no
80	Universal Cartridge 1	uc1.c		no	no	no	no	no	no	no
81	Universal Cartridge 1.5	uc2.c		no	no	no	no	no	no	no
82	Universal Cartridge 2	uc2.c		no	no	no	no	no	no	no

The following table shows some essential properties of the various cartridges and can be helpful to find a matching CRT ID for a given cartridge dump:

CRT ID	Type	Cartridge Name	Freezer	ROM	RAM	Banking	IO1	IO2	Encoded	Comment
1	ar5	Action Replay V5	yes	32k	8k	4*8k	Register	ROM/RAM	-
2	kcs	KCS Power Cartridge	yes	16k	128b	-	Register / ROM	Register / RAM	-
3	fc3	Final Cartridge 3	yes	64k	-	4*16k	ROM	Register / ROM	-
4	simon	Simons Basic	-	16k	-	-	toggle 8k/16k	-	-
5	ocean	Ocean	-	256k/512k	-	32/64*8k	register	-	-
6	expert	Expert Cartridge	yes	-	8k	-	enable/disable	-	-
7	fp	Funplay/Powerplay	-	128k	-	16*8k	register	-	-
8	sg	Super Games	-	64k	-	4*16k	-	register	-
9	ap	Atomic Power	yes	32k	8k	4*8k	register	ROM/RAM	-
10	epyx	Epyx FastLoad	-	8k	-	-	enable	ROM	-	automatic disable by capacitor
11	wl	Westermann	-	16k	-	-	-	switch to 16k	-
12	ru	REX Utility	-	8k	-	-	-	enable/disable by addr	-
13	fc1	Final Cartridge 1	yes	16k	-	-	disable / ROM (r/w)	enable / ROM (r/w)	-
14	mf	Magic Formel	yes	64k+32k	8k	8*8k	RAM	register	-	contains a mc6821
15	gs	C64GS/System3	-	512k	-	64*8k	Bank 0	bank by addr	-
16	ws	WarpSpeed	-	16k	-	-	enable / ROM (write)	disable / ROM (write)	-
17	din	Dinamic	-	128k	-	16*8k	bank by addr	-	-
18	zaxxon	Zaxxon	-	20k	-	4k+2*8k	-	-	-	banking by reads to ROML
19	md	Magic Desk	-	32...1024k	-	4...128*8k	register	-	-
20	ss5	Super Snapshot V5	yes	64k	32k	8*8k	Register / ROM	-	-
21	comal	Comal80	-	64k	-	4*16k	register	-	-
22	sb	Structured Basic	-	16k	-	2*8k	register	-
23	ross	ROSS	-	16/32k	-	1/2*16k	enable bank 2	disable
24	dep64	Dela EP64	-	8k + user	-	user	register	-	-
25	dep7x8	Dela EP7x8	-	user	-	user	register	-	-
26	dep256	Dela EP256	-	user	-	user	register	-	-
27	rep256	REX EP256	-	8k + user	-	user	-	register	-
28	mikro	Mikro Assembler	-	8k	-	-	ROM	ROM
29	fcp	Final Cartridge Plus	yes	24k	-	-	-	register
30	ar4	Action Replay V4	yes	32k		4*8k	register	ROM
31	star	StarDOS	-	16k	-	-	enable	disable	yes	IO accesses charge/discharge a capacitor
32	easy	Easyflash	-	1M	256b		register	RAM	-	Flash ROM
33	-	Easyflash X-Bank	-	-	-	-	-	-	-	this is not a physical cartridge
34	cap	Capture	yes	8k	8k	-	-	-	yes
35	ar3	Action Replay V3	yes	16k		2*8k	register	-	-
36	rr	Retro Replay/Nordic Replay	yes	64k	32k	8*8k	Register / RAM /ROM	RAM / ROM	-	128k Flash ROM
37	mmc64	MMC64	-	8k	-	-	register	register	-	EEPROM
38	mmcr	MMC Replay	yes	512k	512k		register	register	-	Flash ROM, additional EEPROM
39	ide64	IDE64	-	64/128/512k	-	4/8/32*16k	register	-	-
40	ss4	Super Snapshot V4	yes	32k	8k	2*16k	RAM	Register / ROM	-
41	ieee	IEEE488	-	4k		-	-	register	-
42	gk	Game Killer	yes	8k	-	-	disable	disable
43	p64	Prophet 64	-	256k	-	32*8k	-	register
44	exos	Exos	-	8k	-	-	-	-	-	external kernal ROM
45	ff	Freeze Frame	yes	8k	-	-	enable (read)	disable (read)
46	fm	Freeze Machine	yes	16k	-	-	enable (read)	disable (read)
47	s64	Snapshot64	yes	4k	-	-	-	enable
48	se5	Super Explode V5	-	16k	-	2*8k	enable (read/write)	register		automatic disable by capacitor
49	mv	Magic Voice	-		-			register
50	ar2	Action Replay V2	yes	16k	-	2*8k	enable (r/w)	disable / ROM (r/w)	-	IO accesses charge/discharge a capacitor
51	mach5	MACH 5	-	8k	-	-	enable / ROM (write)	disable / ROM (write)
52	dsm	Diashow Maker	yes	8k	-	-	disable	-
53	pf	Pagefox	-	64k	32k	4*16k	register	-
54	ks	Kingsoft Business Basic / Cardco S'more	-	24k	-	-	mode by r/w	-	yes
55	silver	Silver Rock 128	-	128k	-	16*8k	register	-
56	f64	Formel 64	-	32k	-	4*8k	-	register		contains a mc6821
57	rgcd	RGCD	-	64k	-	8*8k	register	-
58	rrnet	RR-Net MK3	-	8k	-	-	register	-	-
59	ecr	Easy Calc Result	-	24k	-	8k + 2*8k	bank by addr	-	-
60	gmod2	GMod2	-	512k	-	64*8k	register	-	-	Flash ROM, additional EEPROM
61	max	MAX BASIC	-	16k	2k	-	-	-	-
62	gmod3	GMod3	-	2/4/8/16M	-	256...2048*8k	register	-	-	Flash ROM
63	zipp	ZIPP-CODE 48	-	8k	-	-	enable / ROM (read)	disable (read)	-
64	bb8	Blackbox V8	-	32/64k	-	2/4*16k	-	bank from addr	-
65	bb3	Blackbox V3	-	8k	-	-	disable (write)	enable (write)	-
66	bb4	Blackbox V4	-	16k	-	-	enable (read)	disable (read)	-
67	rrf	REX RAM Floppy	-	8k	256k	- / 32*8k	-	enable/disable by addr	-
68	bis	BIS Plus	-	2/4/8k	-	-	disable (write)		-
69	sdbox	SD Box	-	128k	3 bytes	8*16k	register	-	-	sd2iec is on the same board
70	mm	MultiMAX	-	1M	2k	64*16k	register		-
71	bb9	Blackbox V9	-	32k	-	2*16k	Register / ROM		-
72	ltk	LT Kernal	yes	8k	16k	-	register	-	-	I/O page can be selected with a jumper
73	rl	CMD RAMlink	-	64k	8k
74	hero	Drean (H.E.R.O. bootleg)	-	32k	-	4*8k	-	register	-
75	ieeeflash64	IEEE Flash 64	-	8k	-	-	6821 registers	-	-	external kernal ROM (uses hiram clip)
76	turtle	Turtle Graphics II	-	16k	-	2*8k	enable bank 1	-	-
77	ff2	Freeze Frame MK2	yes	16k	-	-	disable (read)	enable (read)	-
78	partner64	Partner 64	yes	16k	8k	-	ROM/enable+disable	-	-
79	hyper	Hyper BASIC MK2	-	64k	-	8*8k	register	-	-
80	uc1	Universal Cartridge 1	-	32/64/128k	32k	2/4/8*16k	register	-	-
81	uc15	Universal Cartridge 1.5	-	128/256/512k	512k	8/16/32*16k	register	-	-	Almost the same as UC2
82	uc2	Universal Cartridge 2	-	128/256/512k	512k	8/16/32*16k	register	-	-