02218: gtstarb2: Ingame bugs (bad MCU simulation)

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
02218	Known Issues/To-Do's	Minor	Always	Sep 9, 2008, 14:37	Jun 29, 2017, 07:27

Tester	stephh	View Status	Public	Platform
Assigned To		Resolution	Bugs That Aren't Bugs	OS
Status [?]	Resolved			Driver	toaplan/slapfght.cpp
Version	N/A	Fixed in Version	0.187	Build
		Fixed in Git Commit		Github Pull Request #

Summary	02218: gtstarb2: Ingame bugs (bad MCU simulation)
Description	- Patches are coded diffrently than in 'gtstarb1' and code isn't always perfect (lazy coding ?) which causes LOTS of ingames bugs or strange behaviours : * patched command 0x20 : NO continue play * patched command 0x21 : as soon as a player loses all his lives, the game is over (even if other player still has lives) * patched command 0x22 : difficulty is ALWAYS set to "Easy" at start so "Difficulty" Dip Switches have no effect when you are playing (it still has an effect in the "test mode" though) * patched command 0x23 : different lives settings (thus the need of a specific INPUT_PORTS definition for this game) * patched command 0x25 : right and down directions are swapped (thus the need of a specific INPUT_PORTS definition for this game) * patched command 0x2a : player flag (which determines if player 1 or player 2 is playing) is NOT updated, causing the following things : . current player score will ALWAYS be displayed under player 1 . when cabinet is set to "Cocktail", player 2 uses player 1 inputs * patched command 0x38 : laser position does NOT change according to player position (it ALWAYS starts from the middle of the screen)
Steps To Reproduce
Additional Information
Github Commit

Flags	Noted in Source
Regression Version
Affected Sets / Systems	gtstarb2

Attached Files

No.13948 Haze Senior Tester Jun 28, 2017, 19:54 edited on: Jun 28, 2017, 19:54	this is still 'bugs that aren't bugs' it shouldn't be changed to 'fixed' it's a feature of the bootleg because the bootleggers didn't understand the protection.
No.13949 Fujix Administrator Jun 29, 2017, 07:27	Reverted.