Schematics!
The first draft of the BMOW schematics are finished, along with complete equation lists for the 11 unique GALs (18 GALs total). This is everything needed to actually build the machine. You can view it all on the technical info…
Category BMOW 1
The original BMOW: a custom-designed, hand-built 8-bit CPU and computer.
Initial Schematics Complete
The first draft of the schematics are complete. It was a good exercise, as working out every connection for every chip forced me to consider a few points I’d glossed over before. I ended up having to introduce a few…
More Timing Analysis
The schematics are nearly done. I’ve finished all of them except the memory/device subsystem, which is proving to be difficult. Unlike the registers and all the other machine components, the RAM and the USB interface don’t use a clock. Instead,…
Piles of Hardware
I keep accumulating more and more hardware, and my office is beginning to overflow with boxes, tools, and wires. I need to start turning this pile of parts into an actual machine ASAP. The first of my recent acquisitions was…
Das ist kein 6502
I received an email from CPU-builder Dieter Müller, describing his very impressive M02 project to build a custom CPU binary compatible with the 6502, using standard 74LS and similar parts. In short, a project quite similar to my own, except…
Schematics
I’ve started creating schematics for the machine, using an evaluation version of CSiEDA 5. Making a real schematic that shows all the parts, pins, and interconnections is amazingly time-consuming, but it’s essential if I want to avoid making construction mistakes.…
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