Tag: b128

In the last post, I found out my MOS 6509 was garbage, at the very least, and was waiting on an order of a Nu6509 from RETRO Innovations. There were some delays in receiving PCBs and getting them soldered up, but it finally arrived a couple of weeks ago. In the meantime, I ordered a WDC 65C816S CPU […]

In the last post, I ended up desoldering some components that I thought could be a problem, only to find that they appear to be just fine. I moved on to second guess my assumptions due to my experience level, specifically wondering about whether these address and data lines are correct. I then sent off […]

In the last post, I introduced my US-market Commodore B128 that wasn’t feeling like being a computer. A lot of the diagnostics looked okay, and I was just about to start desoldering components out of a combination of hope and despair. Some Soldering Required Each desoldered component was replaced with a same-size socket, and continuity […]

This is my Commodore B128, serial C002720. The B128 is the low-profile US version of the Commodore CBM-II, a machine designed to replace the PET/CBM series, released around the same time as the Commodore 64. Other pages, linked below, do a great job covering the history of this machine. When I received it, it looked […]