Forum: >>> Magnum BBS <<<

Mousecard IRQs and VBL

From Colin Leroy-Mira@21:1/5 to All on Thu May 8 11:52:29 2025

Hi,

In case anyone's interested. An investigation about a MAME bug helped
clear an apparently common misconception that the MouseCard's IRQ could
not be "really" synced to vertical blanking.

It can, and it is: https://www.colino.net/wordpress/en/archives/2025/05/08/yes-the-apple-ii-mousecard-irq-is-synced-to-the-vbl/

HTH,
--
Colin

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Sysop:	Keyop
Location:	Huddersfield, West Yorkshire, UK
Users:	715
Nodes:	16 (0 / 16)
Uptime:	166:58:00
Calls:	12,096
Calls today:	4
Files:	15,003
Messages:	6,517,810