08394: apple3: Unreliable display of loaded character sets

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08394	Graphics	Minor	Sometimes	Aug 7, 2022, 11:36	Aug 17, 2022, 06:22

Tester	xolson	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Acknowledged			Driver	apple/apple3.cpp
Version	0.246	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08394: apple3: Unreliable display of loaded character sets
Description	When a program loads a new or partial character set into the apple 3 some font corruption can be seen at times. Almost all of the time, when you run the System Utilities with the following command you see the corruption. There should be some horizontal lines on the screen for formatting and they appear as garbage characters. Also to the left of the cursor is some garbage character instead of a [ char. mame apple3 -flop1 E:\a3test\Apple3SOS1.3SysUtils.dsk ------------------------------------------------------------------ The problem can also be demonstrated with Business Basic using the following command. After Business Basic finishes loading, type "run fontdemo" It will cycle through loading the 4 font files on the disk and if you observe it for a while you will see occasional messed up characters. mame apple3 -flop1 E:\a3test\Apple3BusBasic1.1.dsk
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	apple3

Attached Files