02362: block: Ball speed is erratic.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
02362	Speed	Minor	Have not tried	Feb 5, 1997, 00:00	Jun 7, 2010, 19:41

Tester	-MAME Source-	View Status	Public	Platform
Assigned To	hap	Resolution	Fixed	OS
Status [?]	Resolved			Driver	capcom/mitchell.cpp
Version	N/A	Fixed in Version	0.138u2	Build
		Fixed in Git Commit		Github Pull Request #

Summary	02362: block: Ball speed is erratic.
Description	Ball speed is erratic in Block Block. It was not like this at one point. This is probably related to interrupts and maybe to the above bits.
Steps To Reproduce
Additional Information
Github Commit

Flags	Noted in Source
Regression Version
Affected Sets / Systems	block

Attached Files

No.06235 Haze Senior Tester Jun 7, 2010, 18:44	I'm still not convinced the understanding of these bits is correct hap. Monster World might be a bootleg, but it still requires the CPU to be overclocked 4x to avoid weird glitches due to it changing tile bank / sprite banks at the wrong time. Also, I think the port should be renamed from "DSW0" it's clearly not a dipswitch ;-)
No.06236 hap Developer Jun 7, 2010, 19:17 edited on: Jun 7, 2010, 19:32	Me neither, bit0 is still a hack, and I kept in the note that bit 0 and 3 are not completely understood yet. Hooking up bit3 to the vblank flag fixed Block Block ball speed though, which is what this bugreport was about. I'll rename DSW0 edit nevermind that rename, it's messy with any name :P having that eeprom/vblank register in INPUT_PORTS is confusing.
No.06237 Haze Senior Tester Jun 7, 2010, 19:41	well usually the port would be called SYS or similar .. DSW stands for dipswtich, which it certainly isn't. It's vblank flags, eeprom vflags, interrupt pending flags(?) and maybe a service switch in some cases.