As I have begun work on writing a general-purpose Unicode string renderer for the C65GS, it has got me right at the coal face of developing...

This morning after synthesis of the fix for the sneaky CPU bug fix, I had the chance to test it out. Rayne's interlace test program no...

While trying to run some graphic test programmes supplied by Rayne, I found that the CPU was mis-behaving in a way that reminded me of the b...

Boulder Mark seems to work now, even though I can't think what I might have fixed that would have addressed the problem it was having. ...

The title says it all: The 48MHz CPU is almost working, but there is clearly something fruity going on.  Sadly it isn't the same issue...

I am continuing to fight with getting the reimplemented CPU and VIC-IV all settled down, however things are getting much closer. As the fo...

Debugging of the re-implemented CPU continues, and is hopefully close to complete.  I thought I would describe some of the process I have fo...

It still isn't very exciting to look at right now, but the CPU is getting closer to working properly. I have found and fixed abut in t...

It's taken much longer than I would have liked, but I have the redesigned CPU mostly working now. The CPU is running at 48MHz, and sho...

This evening I had a few minutes to implement the next IPC improvement I had in mind.  This one is just implementing the simple end of instr...

Reflecting on the recent benchmark results, and especially that the revision 9 Chameleon is almost exactly the same speed as the C65GS in th...

After a bit of poking around the C65-mode BASIC interpreter I worked out that I had forgot to implement PHW absolute mode (immediate mode w...

As mentioned previously, I am now working on extending the C64 Emulator Test Suite to create a C65 emulator test suite.  In the first instan...

As I have progressed, the need has arisen for an assembler that can assemble 4510 instructions. I have extended the Ophis 6502/6510/65c02 ...