03269: bagman: Impossible to enter a "Z" in high-score name.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03269	Gameplay	Minor	Always	Jun 19, 2009, 00:26	Feb 8, 2011, 22:50

Tester	Janez	View Status	Public	Platform	SDLMAME
Assigned To		Resolution	Bugs That Aren't Bugs	OS	Linux
Status [?]	Resolved			Driver	valadon/bagman.cpp
Version	0.131	Fixed in Version		Build	Athlon
		Fixed in Git Commit		Github Pull Request #

Summary	03269: bagman: Impossible to enter a "Z" in high-score name.
Description	If you reach the top 5 high score you can enter your name in the list. But if your name, like mine, contain a "Z" you can't enter that letter.
Steps To Reproduce	1) Start a game. 2) Play well, you need at least 14300 point. 3) Wait the GAME OVER. 4) You are in the top five high-score and you can write your name. 5) The alphabet ends with the "Y", there is no "Z".
Additional Information	There is the same bug in XMAME 0.92
Github Commit

Flags
Regression Version
Affected Sets / Systems	bagman

Attached Files

No.04528 Tafoid Administrator Jun 19, 2009, 11:51	I can confirm but until we get some PCB confirmation, I've set this as POSSIBLE. It's not the type of bug that improper emulation might cause (at least in my experience).
No.04702 Yonah Tester Jul 25, 2009, 20:48	This bug exists on the real PCB (Stern Set ?), it's a bug in the real game. I can't remember if my father and I ever noticed this over the years because our initials are KDF and JPF respectively. I can upload a video if necessary.
No.07175 phantomdj Tester Feb 8, 2011, 22:13	This does not appear to be a bug in MAME. It is a bug in the original programming. The program code which handles the high score entry has some bugs which prevent the letter Z from being selectable. A simple MAME cheat can fix this bug and allow the letter Z into the high score table. I suppose this should be labeled as "bug that is not a bug" [BTNB ?] CODE FOLLOWS ; handle joystick right in high score mode (advance) 2EB2: 78 ld a,b ; load A with letter 2EB3: FE 29 cp $29 ; at "Z" ? [bug, should be CP $2A] 2EB5: 20 02 jr nz,$2EB9 ; no, skip next step 2EB7: 06 10 ld b,$10 ; yes, reset back to A [should be ld b, #0F for space] 2EB9: 04 inc b ; advance to next letter 2EBA: CD 0A 2F call $2F0A 2EBD: CD 19 2F call $2F19 2EC0: C9 ret ; handle joystick left in high score mode 2EC1: 78 ld a,b ; get current letter 2EC2: FE 10 cp $10 ; at beginning ? 2EC4: 20 02 jr nz,$2EC8 ; no, skip next step 2EC6: 06 2A ld b,$2A ; set to "Z". [bug , should be ld b,$2B] 2EC8: 05 dec b ; previous letter 2EC9: CD 0A 2F call $2F0A 2ECC: CD 19 2F call $2F19 2ECF: C9 ret
No.07176 hap Developer Feb 8, 2011, 22:49	ok, thanks for investigating