- VCF South West - June 14 - 16, Davidson-Gundy Alumni Center at University of Texas at Dallas
- VCF West - Aug 2 - 3, Computer History Museum, Mountain View, CA
- VCF Midwest - Sept 7 - 8 2024, Schaumburg, IL
- VCF SoCal - Mid February 2025, Location TBD, Southern CA
- VCF East - April 2025, Infoage Museum, Wall NJ
-
Please review our updated Terms and Rules here
btb's latest activity
-
btb replied to the thread Compaq Portable II, Recreating the 512/1536 Kbyte System Memory Board (104176-001).Yeah, just cosmetically it's amazing @silvervest congrats! My assumption is that any ISA memory board that can be told to start at the... -
btb reacted to silvervest's post in the thread Compaq Portable II, Recreating the 512/1536 Kbyte System Memory Board (104176-001) with
Like.
Okay, false alarm. Turns out I had some dud 41256's in the AliEx order (shocking I know). Spent the night with a movie and my Retro Chip... -
btb replied to the thread Compaq Portable II, Recreating the 512/1536 Kbyte System Memory Board (104176-001).As far as I know this is correct:
-
-
btb replied to the thread Compaq Portable II, Recreating the 512/1536 Kbyte System Memory Board (104176-001).Dang, really don't know what the issue could be. I'll try to add the other two banks to my setup soon and see if I have the same...
-
btb replied to the thread The South MAI Basic Four Terminal (7250) for Parts (No CRT, case or keyboard).This looks to me just like the 7250 I have. All discrete logic. The 7270 uses a Z80 or something as I recall.
-
btb reacted to retrotechrestoration's post in the thread The South MAI Basic Four Terminal (7250) for Parts (No CRT, case or keyboard) with Like.
I recently rescued what appears to be most of a MAI Basic Four Terminal (model 7250, ~1980) from the local e-waste. The parts had been...
-
btb replied to the thread Reorganization of 'Genres' Category.I've been dismayed once or twice that SS-50 systems don't really fit any of the existing genres. Threads for them usually end up in the...
-
btb replied to the thread Compaq Portable II, Recreating the 512/1536 Kbyte System Memory Board (104176-001).Holy cow it works! Those are 1MB SIMMs, but for now it only sees 256K of each one. Not sure what's going on with the parity thing...
-
-
btb replied to the thread Compaq Portable II, Recreating the 512/1536 Kbyte System Memory Board (104176-001).Just got my experimental board delivered. Hopefully can start testing soon!
-
-
btb replied to the thread Obscure turbo LED display layout..I think some of the header pins should also be going to the actual turbo switch, as well as to the motherboard’s turbo input. My guess...
-
My Amstrad PC1512 browsing the Web from the PicoMEM :) I also now publish the Board firmware and informations on a Public GitHub ...
-
btb reacted to rodney's post in the thread Project to create an ATX 80286 mainboard based on the IBM 5170 with Like.
I just received the PCBs, they look in reasonable quality and arrived undamaged as far as I can see. And they remained straight as well...
-
btb replied to the thread Apple II (IIe?) called "Polisher"?.can't quite see the power connector, but it looks like it is the 6 pins in a line variety, which gives it away as a Unitron-type clone
-
btb replied to the thread Compaq Portable II PSU questions.Oh, I glossed over what you said about them all seeming to die in the same way. interesting
-
btb replied to the thread Compaq Portable II PSU questions.I have a working power supply, although I'm not sure what I can tell you that you can't already see from one of your several supplies...
