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Wack0 / maciNTosh

PowerPC Windows NT ported to Power Macintosh systems
GNU General Public License v2.0
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NT4 Setup Fails on PowerPC G4 upgraded B&W G3 #14

Closed WGriffithsBLI closed 2 months ago

WGriffithsBLI commented 2 months ago

Hey, so yes, me again, sorry! So my B&W G3 is actually upgraded to a G4 with a Sonnet card - yes, I was kinda curious if a wickedly fast NT4 PPC system was doable. Unfortunately the NT4 text-based setup screen halts at the below.

image

Am wondering if anyone has had success with using this with a G4 CPU at all (as I know the Yikes G4 has to have ADB added for this to work), or whether this is the first attempt. I may be guessing here that maybe the setup is freaking out and failing to identify the CPU and thus returning the error.

Wack0 commented 2 months ago

NT4's osloader and setupldr has an overzealous PVR check, if it's not in a hardcoded list it will fail like this.

The ARC firmware has code to patch this check out on load (for a PVR high 16 bits not in the list, patch all occurences of mfpvr to fake a PPC750 so the NT bootloader continues), evidentally that code is nonworking right now. I will investigate as soon as possible.

Wack0 commented 2 months ago

Fixed in 07c734381b5d73cce94232e7a230bda72597166d and latest release v0.04.

WGriffithsBLI commented 2 months ago

Can confirm that the error is no longer impacting my machine! Thanks for this!