08589: a7800: MAME source not have mid-line updates register code

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08589	Graphics	Minor	N/A	Mar 25, 2023, 10:18	Mar 25, 2023, 23:46

Tester	Augusto	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Other
Status [?]	Acknowledged			Driver	atari/a7800.cpp
Version	0.252	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08589: a7800: MAME source not have mid-line updates register code
Description	Hello. The console does mid-line updates in graphics. Not emulating that feature have occasional graphical glitches in some games. MAME not have mid-line updates code. A7800 is an emulator for Atari 7800 using MAME a7800 source code plus some fixes, mid-line updates and others features. Please see the link below with replies from A7800 creator. https://github.com/7800-devtools/a7800/issues/11#issuecomment-1475066717 MAME need add mid-line update for accuracy. Thanks for reading. Have an nice day.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	a7800

Attached Files

No.21217 Robbbert Senior Tester Mar 25, 2023, 23:46	Acknowledged. Someone who knows this hardware hopefully can provide some input.