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Good afternoon everyone! I was recently given a Tandy 1000 RL HD from a family friend who had it in storage for decades. It appears to run perfectly, and I want to future-proof it by installing CompactFlash storage. I am OK using the HD until it dies so I figure I'll use the CF as a HD backup...

Hello everyone! I'm in the process of moving and all my soldering equipment is in storage so a friend of mine has graciously offered to let me use his today. I want to install the FreHD auto boot EEPROM and I'm unsure where to source the 5V on the motherboard. Has anyone else installed one on...

Hi everyone! A while back I posted about a NIB Coco3 I purchased at a garage sale. Everything works perfectly except for the screen which appears to 'jump' vertically a few times a second. When I insert a disk controller cart it continues, however when I inserted the only other cart i have...

Hello everyone! I decided to transplant my Alps keyboard from one 4D to another and when I opened the back up, I saw something I wasn't expecting. Can anyone tell what it is? It's plugged into U1; the SHARP chip is a Z80A but I have no idea what the additional chips are. Thanks in advance!

Good afternoon! After gifting my Model III to my sister's family in 1984, and then regretting that decision every waking moment of my life, I made the decision a couple of years ago to get back into TRS-80s...and figured Is should do so with a 4D. I kept my eyes open for one in decent shape; I...