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It's not an above board, it's one of the ram expansion modules that clips onto the inboard itself. I'm also planning on keeping that bundled with the inboard.

I'm not interested in selling just the 4MB expansion on it's own at this time. It was working without issues when I pulled it off of the Inboard though.

Not at all! Sorry if there's a mistake in my listing, this is my first time using the marketplace. All items are still available if you're interested.

Hi all, removing some upgrades from my IBM 5150 to revert it to a configuration closer to stock. All of these components were working before I pulled them from the machine unless otherwise listed. Intel Inboard 386/PC ($1200): comes with 5.25" driver disk, manual, 1MB memory expansion (not...

PMed

PMed

Interesting, I haven't had an issue with rubbing on the top of the case. Did you remove any motherboard RAM chips that are interfering with the ram board?

I bought 2 groups of 4 SIMMs from the same listing on eBay and that worked for me.

What mod did you use to increase the bus speed to 8MHz? Did you use the PC-Sprint or Sergey's XT overclock?

EMM386.EXE is incompatible with the inboard (per this thread). In the past, I've had good luck using just himem.sys without ilim386.sys. My test is that Wolf3D will report some amount of the memory available to the program. With just himem.sys, I see a good amount of conventional memory + 1000+...

I purchased a board from Harrison about a month ago and put it together without many issues.

I haven't had any issues booting from floppy or reading floppies in DOS. Granted, I'm still running the original 16MHz i386 (need to find a clock doubled 486 drop in). I think that I've seen Jonas(?) mention issues with faster CPUs and the IBM BIOS in another thread. @harrison.frazier what BIOS...

I don't really need 4 floppy drives. The Quad-Flop allows me to use 1.44 MB floppy drives. As an added benefit, since I'm planning on building a bootleg 5161 expansion unit, I'm planning on putting a 1.44MB drive and a GoTek in that and keeping them in the expansion unit while keeping the 5150...

I've been looking at it a little bit more and it seems like my Jonas got a doom tech demo running in another thread and I've asked there. Next up, seeing if I can get Win95 to work or at least MS-DOS 7.1 (for the FAT32 support).

How did you get the keyboard working? Is that a side effect of the DOOM tech demo?

Another complete ParrotyError expansion board! Thanks @harrison.frazier for all of your help on Reddit. I went ahead and installed and tried to run DOOM. Has anyone had any luck getting the keyboard working with DOOM? Full System Specs: original 16Mhz i386 with added 387 5MB total system...

Oh yeah, I never meant to imply that the new stickers don't look phenomenal! The new stickers look great and I just wanted to provide a point of comparison between the new one and the original. Hard to do any concrete comparisons given the age and unknown history of the original.

I took a picture of my reproduction sticker compared to my original sticker. Original sticker is significantly brighter, but that could be because of sun damage. It was originally attached to the front of the manual, which is quickly falling apart at the spine..

Has anyone actually put together a bootleg 5161? If so, were there any unexpected hurdles?

Are there any ongoing efforts to modify the GALs and PALs to remove the 4MB limit?