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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.

Only thing I found was Version 1 on a Software of the Month Club August 1995 CD-ROM. The only other thing I can think to do would be to see if Mark C Smith is on LinkedIn. I just sent a note to a Mark Smith who went to U of M from 1990 to 1996 and did software development for Netscape and Aol...

You could try the newlife drivers, both newlife and Novy seemed to use a lot of the same drivers. https://www.savagetaylor.com/2023/01/17/68k-accelerators-newlife-computer-corporation/ I assume you tried the Novy Railgun drivers? https://vintageapple.org/macdrivers/accel.shtml

Does anyone have, or know about the Abaton Multitalk? I was going through the TIL articles and found: TIL04140: MultiTalk: No Longer Available for AppleTalk Network MultiTalk lets AppleTalk network users share serial devices. It has four mini-circular-8 connectors: one for AppleTalk (RS-422)...

Finally found one in an ebay listing that gave the non-branded model number: ITE e230076, hopefully this time I receive the right thing.

Having difficulty finding this, plenty of adapters with the GRD and +5volt pins flipped from what you have. I thought I had found what I needed on amazon, the icon in the product pictures was correct, but when it arrived the actual product had the icon below.... Trying to figure out the right...

On further testing this is not a 100% solution (wiped volume), sometimes it works, sometimes it doesn't. My plan now is to setup an basic 8.1 installation on my 32GB CF card and create an image of that card for myself, and others if they want it. For whatever reason a 100% working approach for...

Found a potential match for the 820-0745-A in the Parts DB on the Service Source 1997-10 Main CD. Part number 661-1181 for a 60pin dual-line card.

I have the later card 820-0745-A from 1995 with a 60 pin connector that I'm trying to find information about. I also have the 820-0567-A card from 1994. So far all I've found is mention of the 661-0159 being replaced by the 661-1073 card on page 80 of the Apple Service Guide Volume 4.

Success! @AndiS, @360alaska, @jeremywork Just did a test, did a full erase (erase, plus Burn 2.5) of a volume that previously had a non-working installation of 8.1 + PCsetup, then a new install.... PCsetup worked! Erased the volume Ran Burn 2.5 on the volume (Burn 2.5 is also on my System 7.5.5...