Test ROMs

A test ROM is a program designed specifically to test whether the platform that the program is running on is working correctly. A test ROM can be used to test the accuracy of an emulator, as well as compare the behavior of different hardware revisions.

Blargg's tests

Blargg's tests are available at: http://blargg.parodius.com/gb-tests/

All tests were executed in each emulator's DMG mode, except the CGB sound test, which was executed in both DMG and CGB modes.

Emulators running on desktop computers

Test / Emulator	BGB v.1.12/1.3 dev	Gambatte v0.4.1	KiGB v2.05	MESS 0.140 (Oct 31 2010)	no$gmb v2.5b	VBA-M 1.8.0 SVN956
CGB sound (in CGB mode)	Failed 14/16 01:02 02:ok 03:03 04:02 05:02 06:01 07:05 08:ok 09:01 10:01 11:03 12:02	Passed? Runs the 12 tests with OK, then proceeds to apparently running many more tests forever.	Failed 16/16 01:02 02:05 03:03 04:02 05:02 06:01 07:02 08:01 09:01 10:01 11:02 12:02	Failed 01:02 02:02 03:02 Note: Test 04 never completes.	Failed 01:02 02:02 03:02 Note: Test 04 never completes.	Failed 1/12 01:ok 02:ok 03:ok 04:ok 05:ok 06:ok 07:ok 08:ok 09:01 10:ok 11:ok 12:ok
CGB sound (in DMG mode)	Failed (A real DMG fails, but with other values.) 01:02 02:ok 03:03 04:02 05:02 06:01 07:05 08:ok 09:01 10:01 11:03 12:02	Passed? Runs the 12 tests with the data below (which matches the output on a real DMG) and then proceeds to apparently running many more tests forever. 01:ok 02:ok 03:ok 04:ok 05:ok 06:ok 07:ok 08:01 09:01 10:01 11:04 12:02	Failed (A real DMG fails, but with other values.) 01:02 02:05 03:03 04:02 05:02 06:01 07:02 08:01 09:01 10:01 11:02 12:02	Failed 01:02 02:02 03:02 Note: Test 04 never completes.	Failed 01:02 02:02 03:02 Note: Test 04 never completes.	Failed (A real DMG fails, but with other values.) 01:ok 02:ok 03:ok 04:ok 05:ok 06:ok 07:ok 08:ok 09:01 10:ok 11:ok 12:ok
CPU instructions	Failed 3/11 as of 1.12 (public) 01:06 03:01 11:01 Passed as of 1.3 dev (non-public)	Passed	Failed 2/11 03:01 05:01	Passed	Failed 2/11 03:01 05:01 Note: Warns about inc/dec in OAM.	Passed
DMG sound (v2)	Failed 11/12 01:02 02:ok 03:03 04:02 05:02 06:01 07:05 08:01 09:01 10:01 11:03 12:01	Passed? Runs the 12 tests with OK, then proceeds to apparently running many more tests until it finally hangs at "D7".	Failed 11/12 01:02 02:05 03:03 04:02 05:02 06:01 07:02 08:ok 09:01 10:01 11:02 12:01	Failed 01:02 02:02 03:02 Note: Test 04 never completes.	Failed 01:02 02:02 03:02 Note: Test 04 never completes.	Failed 5/12 01:ok 02:ok 03:ok 04:ok 05:ok 06:ok 07:ok 08:01 09:01 10:01 11:04 12:01
Instruction timing	Passed	Passed	Test doesn't finish	Passed	Test doesn't finish	Passed
Memory timing (v2)	Failed 3/3 as of 1.12 (public) 01:01 02:01 03:01 Passed as of 1.3 dev (non-public)	Passed	Test doesn't finish	Failed 1/3 01:ok 02:ok 03:01	Failed 3/3 01:01 02:01 03:01	Failed 1/3 01:ok 02:ok 03:01
OAM bug (v2)	Failed 6/8 01:02 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02	Failed 5/8 01:ok 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02	Failed 6/8 01:02 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02	Failed 5/8 01:ok 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02	Failed 6/8 01:02 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02 Note: Warns about inc/dec in OAM. (Which is appropriate)	Failed 5/8 01:ok 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02

Emulators running in JavaScript

Test / Emulator	GameBoy Online as of 2010-12-22	JSGB by Pedro Ladaria v0.2	jsGB by Imran Nazar aka Two9A 2010-09-27 GitHub checkin
CGB sound (in CGB mode)	Failed 15/16 01:02 02:05 03:03 04:02 05:02 06:01 07:02 08:01 09:01 10:ok 11:03 12:02 Note: GameBoy Online does have sound support.	(No GBC support.)	(No GBC support.)
CGB sound (in DMG mode)	(Apparently can't run a GBC only ROM in DMG mode.)	Failed 16/16 Fails all tests, then proceeds to apparently running many more tests forever, much like Gambatte. 01:02 02:02 03:02 04:03 05:02 06:02 07:02 08:03 09:02 10:02 11:02 12:03 Note: JSGB doesn't have sound support.	Failed Breaks during the first test. "Unimplemented instruction at $23f4, stopping." (ld sp,hl) Note: JSGB doesn't have sound support.
CPU instructions	Failed 1/11 05:01	Failed 01:06 02:05 03: Note: Throws the following errors: "HALT instruction with interrupts disabled.", "STOP instruction". Test 03 never finishes.	Failed Breaks during the first test. "Unimplemented instruction at $677, stopping." (ld sp,hl)
DMG sound (v2)	Failed 11/12 01:02 02:05 03:03 04:02 05:02 06:01 07:02 08:ok 09:01 10:01 11:03 12:01 Note: GameBoy Online does have sound support.	Failed 16/16 Fails all tests, then proceeds to apparently running many more tests forever, much like Gambatte. 01:02 02:02 03:02 04:03 05:02 06:02 07:02 08:03 09:02 10:02 11:02 12:03 Note: JSGB doesn't have sound support.	Failed Breaks during the first test. "Unimplemented instruction at $23f4, stopping." (ld sp,hl) Note: JSGB doesn't have sound support.
Instruction timing	Passed	Failed #255	Failed Test doesn't finish.
Memory timing (v2)	Failed 3/3 01:01 02:01 03:01	Failed 3/3 01:01 02:01 03:01	Failed Test 01 doesn't finish.
OAM bug (v2)	Failed 6/8 01:03 02:02 03:ok 04:03 05:02 06:ok 07:01 08:02	Failed (The test never completes.)	Failed Breaks during the first test. "Unimplemented instruction at $23f4, stopping." (ld sp,hl)