09498: some System 246/256 games: CHDs are treated as DVD regardless of if the game's media is actually CD or HDD

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09498	Media Support	Major	Have not tried	30 days ago	28 days ago

Tester	FMecha	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows (x64)
Status [?]	Direction Needed			Driver	namco/namcops2.cpp
Version	0.288	Fixed in Version		Build	x64
		Fixed in Git Commit		Github Pull Request #

Summary	09498: some System 246/256 games: CHDs are treated as DVD regardless of if the game's media is actually CD or HDD
Description	System 2x6 games using HDD or CD-ROM instead of DVD have their DISK_REGION definition set as DVD by namcops2.cpp because the CHDs are seen as DVDs, which results in the disk images being unusable with real hardware (when burned and used with a modified System 2x6 board) or other emulators (Play!/PCSX2X6) without converting them using chdman's extractcd (somehow and not extractdvd, at least for batlgr3 and motogp) command.
Steps To Reproduce	HDD games with DISK_REGION treated as DVD: acedriv3 batlgr3 fateulc, fateulcb gdvsgdnx motogp timecrs4, timecrs4j CD-ROM games with DISK_REGION treated as DVD: netchu02c rrvac, rrvac1, rrvac2 (not noted in ROM definition but noted in game list at the start of source) vnight wanganmd (not noted in ROM definition but noted in game list at the start of source) wanganmr taiko7's firmware updater CD (tk71_cd01) is correctly treated as CD.
Additional Information
Github Commit

Flags	Noted in Source
Regression Version
Affected Sets / Systems	some System 246/256 games

Attached Files