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I did a bit of a reword on my list to include Floppy Drive and HD20 replacements and a short summary of what SCSI is and key points that someone know to using old Macintosh Systems would need to know. Feel free to comment here or on the page if any of the information I have is incorrect, or if...

Previously I had weird behaviour with CF2IDE adapters, but those problems stopped when I started using industrial CF cards that are intended to be used as a replacement for fixed storage vs. removable storage. https://www.savagetaylor.com/2023/12/17/ide-replacing-your-old-ide-drive/

I believe that for some systems, if you performed a soft reboot the contents of the ram disk will stay in memory. The Macintosh Portables and Powerbooks can do that. TIL08090 System 7 Installing on a Macintosh Portable's RAM Disk, TIL12259 Powerbook Settung up to run from a RAM Disk, TIL17699...

https://archive.org/download/APPLE_TIL_ARTICLES/TIL00001_to_TIL60496.zip/TIL09334-System_7_RAM_Disk-Macintosh_Computers_Supported_2-95_%28TA47701%29.pdf

Do you mean that you want to use an emulator to edit the contents of the .hda file? If the hda file only has a single volume you can use Basilisk II to mount and edit the hda. I have a guide on my site. For your comment about the hda file being locked. Make sure it hasn't been set to...

What about the OS anthology DVDs

Seems to line up with the values for the IIvx https://bluescsi.com/docs/Performance 1.57MB/sec read and 1.4MB/sec (1367 kbytes/sec) write.

Definitely this. I always do a full format (no quick) of my SD cards before I put image files on the so that my image files aren't fragmented

What is the transfer speed of the SD card? I have found that some of the old 4GB or less cards are a lot slower than I expected

I know it is possible with the right setup. MicroMac use to sell a 128MB simm as an upgrade: https://www.micromac.com/products/bigsimms.html

I use 7.5.5 to run some older apps in 24bit mode and to use my Apple IIe card

This is news to me, I have the 33MHz mod, I thought 40MHz caused issues, doing this mix of the two speeds is interesting. I'd like to see benchmarks of the 33+40 for a comparison to my 33 system

If your budget is high enough you could get an Apple IIe card

Modify it to run at 33mhz, and put a 33mhz full 68040 in it. http://www.applefool.com/clockchipping/q605.html

Are you running the latest version is Basilisk II?

It might work, the info I found says that the FPU was optional. If you have a Dove Marathon Racer 030 Plus

Alan just got back to me again and says he is now less busy, I started a new thread to gather who would be interested in attending and what types of questions people want asked so I can send the questions to him in advance.

When I was experimenting with serial a few years ago I noticed that floppy port IO definitely impacted serial IO. I'm surprised a RAM disk didn't help. Was everything on the RAM disk? E.g you app and the system fill too?

I think it's more of a personal challenge of "can I make this work" and/or nostalgia. I know when I played around with ARA + serial + Basilisk II as an internet gateway it was the first category. Looking at websites rendered in Mosaic for me, falls into the second.

There are TA articles: TA29125, and TA43009 from Apple that discusses Maximum Speed for Serial ports, you may find them interesting if you haven't read them already.