Messiah2 (Actel chip) can use 3.3V, 3.45V or 3.5V.
It's your choice.
But you're right, Charlie_ps2 did forgot to put a 3.3V picture on v4 diagram.
And yep, there's nothing from other PCB side. I'll post my alternative points for v4 (CD/DVD controller), but I only recommend to pro's.
SCPH-39001 v7 GH-022 NTSC U/C, Matrix Infinity v1.93 (installed by me), HDLoader v0.8c, Network Adapter (with SATA mod), 1TB SATA, SMS v2.9R4, VGA and GameLink 400 cables.
DEV1: uLaunchELF v4.42b / DEV2: CodeBreaker 10.1. Got PSX and PS3 too.
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