Jeff Tranter's Blog

Here are some notes on design and theory of operation of the Superboard /// . This was gleaned from looking at the circuit and I may have go...

I recently added a few more features to JMON. The main one is a new i N fo command which displays information about the system it is runnin...

I've implemented one of the features missing from JMON, and one that I had been relying on Krusader's mini monitor for: an instruct...

I earlier talked about the POM1 Apple 1 Emulator. John Corrado recently ported it to Android so it runs on Android devices like phones and t...

One of the features missing from JMON was a "mini assembler" like the one included in the Apple II computers. I implemented one...

Today I made JMON a little smarter about 65816 disassembly. It now handles 8-bit and 16-bit instructions, looking at SEP and REP instruc...

The Western Design Center 65816 is a 6502 family processor. It is backwards software compatible with the 6502 and 65C02 and was used on a ...

I've now built the 65816 CPU adaptor board described here . The parts arrived last week, I finished wiring it up today, and I powered i...

The 65816  is a 16-bit processor that is an enhanced version of the 65C02. It has software compatibility with the 65C02 (and hence 6502)...

I just wrote a disassembler that runs on the Replica 1. I did it mostly for a personal programming challenge as there are lots of them arou...

The 65C02 microprocessor is an upgraded CMOS version of the MOS Technology 6502 8-bit CPU. Over the years it has been manufactured by Wester...