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Hello all, Seeing if anyone has ever hooked anything similar to the following in a PC (EG: 5150) or AT (5170) era computer: eBay link (not mine): MOXA C104H ISA 4-port RS232 multi-serial port card Do these work on early PC's, and does each port require a separate IRQs? Also, I haven't been able...

Hello WANG aficionados, As the title states, free for the cost of shipping in the US. 10 pounds. Media Mail likely the best option. Local pickup in south central PA is also an option. Software guides dated 1985: BASIC, Word Processor, Printer Software, Users Guide, Fundamentals, ... Requests for...

Hello All, Taking apart an Atari Mega ST4 for cleaning and found a modification on what I believe is the CPU. I'm able to find other pictures of this when searching for the number on the board: CIO3261, but curious as to what this does/ whether it's a feature of this specific board revision...

Hello All, Having an issue w/ Coleco Adam data packs I can't explain. I have three that I took apart, cleaned, and added a rubber wheel to the digitizer. The following occurs whether the wheel is in place or not so as to exclude the wheel being the issue: When powering up or hitting the reset, a...

Hello All, Looking to see if anyone is willing and able to do repairs on old power supplies. I have two complete PS's for a VT-100 (both with different issues) and a 3rd for parts. Also, a PS for a Bernoulli 10+10. This I might be able to replace with a new mini/ micro PS, but haven't verified...

Hello All, Recently picked up a Bernoulli Box and having an issue... While it does power up and I am able to hear the fan, no lights were coming on when inserting a cartridge. I cleaned out the air filter and do feel it is getting good airflow. Opened it up everything looks clean. Checked the...

Hello All, I have the complete terminal w/ keyboard. Untested as the previous owner had an issue with the PS and had attempted to fix. Too many parts on the power supply missing where finding replacement components unlikely. Would love a replacement PS if someone happens to have. Regards

Hello All, The Apple II+ has 3 rows of 8 = 24 memory chips MK4116J-3GP IRL. I believe I've narrowed the chip(s) down to the row it is in by moving chips around until I didn't see an error. Haven't had luck sourcing the above, but did find a few of the faster MK4116J-2GP IRL (150 vs -3=200ns)...

Hello All, This may be well known already, but I hadn't been able to find any documentation. Recently purchased a Taxan 410-80 RGB 80 Column Card as a BiN on eBay despite being uncertain if this would work with anything beyond a Taxan monitor. The one online manual I found was mis-labeled/ not...

Hello All, Question regarding the jrIDE when use with a dual floppy system (HxC as the secondary to be specific). It seems like there are two boot processes taking place. The first with bright colors. ESC will show the option to boot from A, C, or Cartridge. The second with muted colors. ESC...

Hello All, Recently picked up a Orchid Ramquet XT/AT RAM Card in Marketplace. Advertised as an Orchid Ramquet 8/16, but will still work great for my needs in an IBM AT (5170). Installed and after 20 minutes of use I started to get errors when running different programs. I noticed the card gets...

Hello All, I have 72 chips of Micron MT1257-15 256k 150ns from a Tall Tree Systems JRAM-2 board. I'd love to be able to use these chips in another memory expansion if possible. Anyone know of any other memory expansion cards that would work with the chips I have? I did look into the AST...

Hello all. I have a sidecar item I'm unable to find any information on. No luck on Google for the pn nor finding on https://www.brutman.com/PCjr/pcjr_options.html The sidecar case does not have any markings/ sticker (like the JrCaptain center in the picture). The PCB in the sidecar shows Jr...