I made modifications to this simple 14MHz accelerator by Dennis:
https://github.com/Mathesar/14mhz-accelerator

It runs at either 21 or 28MHz with a configurable PLL.  Photo attached, along with SysInfo and problem shown in ATK.

It's quite speedy (approximately 16MHz 030 A3000 equivalent according to SysInfo result), largely thanks to the zero waitstate memory at that processor frequency, games like Hard Drivin' and 4D Sports Driving (Stunts) have a nice frame rate, and DREAD demo is super smooth.  Every game that runs on the unmodified 14MHz accelerator also runs with the 28MHz modification.  The problem is that music routines run too fast in most games.  A Goggle search pointed me to a gentleman with similar sound symptoms caused by a weak /DTACK pullup, which ultimately led me to discover that my Amiga is having much higher interrupt frequency as measured in ATK.  This problem is not present with unmodified 14MHz accelerator.

My mind isn't as sharp as it was after I finished my university computer engineering degree more than a decade ago, so I'd like to ask for some help figuring out what causes the higher interrupt count and figure out what I should do to improve it.

The Amiga board I am using here is an NTSC 500 rev.5, and the only modifications I made to the accelerator are substituting a configurable PLL, a 10ns delay line to line up the clock edges, and using the buffered 7MHz reference clock from the PLL instead of the one from the system to feed the /DTACK and /AS synchronizing flip-flops because it has a nicer waveform with less skew.

Help is appreciated.

I have installed 3.2 roms and Im using Workbench 3.2, as I understand it supports large drives.

I’m taking it you are using the FastFilesystem? Or PFS3?

What are the following in HDToolBox?

File System Block Size
Mask
MaxTransfer

If MaxTransfer = 0x0FFFF or similar. Then try changing this to 0x1FE00.

Very interesting. Provides a solution to tracking down a 060 and then paying through the nose for it. If the board can emulate a 060 wonder if there is potential to emulate a 604 PPC. Would be really cool to have virtual CS Cyberstorm PPC that is affordable.

Weed

Can’t see a Cyberstorm PPC (Or even a Blizzard PPC) variant considering Phase 5/DCE hold the designs to these cards. The issue is the PPC side. Yes you can use WarpOS and AmigaOS4. But without anything else, PPC doesn’t really add to the Amiga experience without some sort of current backing of new Software.

What would be nice, if we did have SCSI re-introduced back. I prefer it over IDE due to DMA and less overhead on the already demands the CPU has to do.

When someone can't handle the truth it seems.

As I said to Boing-Ball in other thread, I'm trying my best to manage this.
Please, please lets keep it civil.

Shows it works fine, .

YHPM 👍🏻