07212: mpc100 and other PAL machines in msx.cpp: Wrong PAL aspect ratio

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07212	Graphics	Minor	Always	Jan 25, 2019, 05:13	Jun 18, 2020, 19:17

Tester	ICEknight	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10 (64-bit)
Status [?]	Acknowledged			Driver	msx/msx.cpp
Version	0.205	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07212: mpc100 and other PAL machines in msx.cpp: Wrong PAL aspect ratio
Description	Found some footage captured from a PAL Sanyo MPC-100 MSX machine which shows a different aspect ratio to what the emulated PAL MSX 1 and MSX 2 machines display in MAME: Tested with mpc100 (PAL MSX 1), svi738sp (PAL MSX 1) and mlg3 (PAL MSX2).
Steps To Reproduce	This doesn't really require a specific game for testing, but in case that you want to test the one in the video: -Cassette: Load "phantis" from the software list, set it to "cass 2 (side B)" from the File Manager and type run"cas: -Disk: Load "phantis" from the software list, type run"phantis2.bas Enter the 18757 password and press E in the menu to start the game
Additional Information	May be related to issues #5622 and #5623. There's other videos in that channel using other games and MSX models, such as this one (Philips NMS 8250 MSX2):
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	mpc100 and other PAL machines in msx.cpp

Attached Files	phantis original.png (690,573 bytes) Jan 25, 2019, 05:13 Uploaded by ICEknight Aspect ratio from recorded footage
	phantis mame msx 1.png (486,468 bytes) Jan 25, 2019, 05:14 Uploaded by ICEknight MAME (MSX 1)
	phantis mame msx2.png (245,658 bytes) Jan 25, 2019, 05:14 Uploaded by ICEknight MAME (MSX 2)

No.16072 hap Developer Jan 25, 2019, 16:30	I don't know how accurate his video capture card is, but yes, PAL has a different aspect ratio than NTSC. This isn't specific to PAL Sanyo MPC-100 MSX. For 80s/90s consoles(and MSX1 too), Europeans not only suffered the video slowdown due to 50hz, but a flattened aspect ratio as well.
No.16081 ICEknight Tester Jan 27, 2019, 01:15	Yeah, forgot to add "PAL" in the title. Fixed.
No.16083 hap Developer Jan 27, 2019, 17:44	My point is that this issue isn't "mpc100 and related", nor specific to msx.cpp.
No.16169 ICEknight Tester Feb 26, 2019, 21:15	So I specified "and other PAL machines in msx.cpp" in the title now, would this be the correct way to report systems where the PAL version is being displayed with the NTSC aspect?
No.16223 hap Developer Mar 8, 2019, 17:09 edited on: Mar 8, 2019, 17:09	No, there is nothing to fix in the msx.cpp driver. It affects all Japanese/American-made systems where due to the higher number of display lines with PAL compared to NTSC, the aspect ratio(of the active display area) is about 20% flatter. Megadrive, SNES, Playstation, etc.