libretro/daphne - Githubissues

This is a Daphne core.

Source Roots

Original Source: http://www.daphne-emu.com/download/daphne-1.0-src.tar.bz2
Main Author: Matt Ownby
Other Authors: Mark Broadhead, Warren Ondras, Paul Blagay, Scott Duensing, Andrew Hepburn, Robert DiNapoli

Later Source: https://github.com/mirror/daphne-emu/tree/master/doc

Not too much action on that repo.
Quick glance shows most changes are in the Singe area which is not tested and, therefore, likely broken.

Quick Source History to Initial Commit

This core was based on the "Original Source" as above, which was released under GPL.

Android was the first target system, and was the only supported system in the Initial Commit.
Original source was ported from using Android incompatible SDL1 to SDL2.
Then the source was prepared to be a standalone Android APK. A successful APK version was created but not released, as a Libretro core was thought to be the best mechanism for release.
Finally, the code base coming a long way, we come to this core that you're looking at.
Other platform code was left in place and even ported in a few places.
Singe code was never tested or compiled in.

Game Compatibility at Initial Commit

Generally mimics original Daphne compatibility - it was never compatible with every Laser Disc game.
"Test" type and Pioneer gear based cores were ignored.
Key for "S" column:

S	Meaning
-	See notes
X	Not tested
*	Tested and working (as well as it ever did)

Core	Short Name	S	Notes
astron	astronp	-	"p" denotes running on Pioneer gear, so unnecessary for Android
	blazer	X	Never found a good Laser Disc
	galaxyp	-	"p" denotes running on Pioneer gear, so unnecessary for Android
	astron	*
	galaxy	*
	cobraab	*
badlands	badlands	*
	badlandsp	-	"p" denotes running on Pioneer gear, so unnecessary for Android
bega	bega	*
	begar1	*
	cobra	*	known gfx issues, like cockpit being clipped, still can play
	roadblaster	*
benchmark	benchmark	-	unneeded, so untested
cliff	cliff	*
	gtg	-	Goal to Go, was supposedly broken because of fixes for cliff
	cliffalt	*
	cliffalt2	*
cobraconv	cobraconv	-	Cobra Command conversion, this has never worked
cputest	cputest	-	unneeded, so untested
esh	esh	*
	eshalt	*
	eshalt2	*
ffr	ffr	-	Freedom Fighter, this has never worked
firefox	firefox	-	Firefox, code was only ever partially done
	firefoxa	-	Firefox v2, code was only ever partially done
gpworld	gpworld	*	This is a multi-screen game, known to be clunky
interstellar	interstellar	*
lair	lair	*
	lair_f	*
	lair_e	*
	lair_d	*
	lair_c	*
	lair_b	*
	lair_a	*
	dle11	*
	dle21	*	Was showing some sound corruption at times on load
	dle20	*
	ace	*
	ace_a2	*
	ace_a	*
	sae	*	Boot is normally long
	lair_n1	*
	lair_x	*	Some ROM files need renaming from DLUn.bin to dl_x_un.bin
lair2	lair2	*	See: https://www.daphne-emu.com:9443/phpBB3/viewtopic.php?t=2732 about lair2 versions not working
	lair2_318	*
	lair2_317	-	Code was all doc'd out in original source, implying there was never a 317
	lair2_315	*
	lair2_314	-	Error: EEP unhandled OPCode 0 with address 3, see link in lair2
	lair2_300	-	Long boot, input not working
	lair2_211	-	Can't get past the Monitor Test, same error as 314
	ace91	-	Supported as well as Daphne can, in that it's not, no diagonal input
	ace91_euro	-	See ace91
	lair2_316_euro	*	Sometimes get error from 314 but doesn't crash
	lair2_319_euro	*
	lair2_319_span	*	Sometimes an odd corruption in top 10% of screen which quickly goes away
laireuro	laireuro	-	Untested, needs new framefile and mpeg with 720x576, should just work
	aceeuro	-	See laireuro
	lair_ita	-	See laireuro
	lair_d2	-	See laireuro
lpg	lpg	-	Laser Grand Prix, code was only ever partially done
mach3	mach3	*
	uvt	*
	cobram3	*
multicputest	mcputest	-	unneeded, so untested
seektest	seektest	-	unneeded, so untested
singe	singe	-	Untested.
speedtest	speedtest	-	unneeded, so untested
starrider	starrider	-	Star Rider, code was only ever partially done
superd	sdq	*
	sdqshort	*
	sdqshortalt	*
test_sb	test_sb	-	unneeded, so untested
thayers	tq	*	Need keyboard and sound to effectively play
	tq_alt	*
	tq_swear	*
timetrav	timetrav	-	Time Traveler, code was only ever partially done

Development Notes

Using Vulkan and Double Buffering can cut input latency by 16ms.
Recommendations: Vulkan driver, Threaded Video: off, Vsync: on, Max Swapchain Images: 2, Input Poll Type: Early

Directory Setup

Initial path taken from RA during load, user points to a ROM zip file like lair.zip.

Example:

Comes from RA: /storage/emulated/0/Roms/Daphne/roms/lair.zip
Then it's stripped down:
- Name: lair
- Extension: zip
- home_dir (where everything hangs off): /storage/emulated/0/Roms/Daphne/roms/..
Directories given above:

Type	Directory
pics:	[home_dir]/pics
ram:	[home_dir]/ram
sound:	[home_dir]/sound
framefile:	[home_dir]/framefile
CDROM:	[framefile_dir]/[first line in the framefile (IE lair.txt)]

The only lair.txt that is considered is in framefile.