tonyRobinson

5 ms·

1. 1.▲
   by tonyRobinson 10y ago

   Thanks for that link. I'm sure I've looked at MIPS before and it may well have unconsciously influenced me, or it may be a case of converging evolution, but I use the three register design much like MIPS does. However, mine is
2. 2.▲
   by tonyRobinson 10y ago

   I liked the challenge of implementing my own instruction set. It turned out to be quite similar to a subset of ARM, so it may also be similar to a subset of MIPS (I haven't checked).
3. 3.▲
   by tonyRobinson 10y ago

   I'm experimenting with names. You'll see a write up where I minimise the number of legs, i.e. solder joints you have to make. That seemed like a very good metric. But then I found myself discussing everything in terms of the t
4. 4.▲
   by tonyRobinson 10y ago

   8 bit and 4 bit CPUs are horrible things to teach. By being 16 bits throughout you can do many high level things in one instruction. It also makes for an efficient FORTH implementation.
5. 5.▲
   by tonyRobinson 10y ago

   Yes, I did consider implementing a simpler processor that ran a bit sliced ALU. I decided against it because registers are needed to see how the processor works (how it fetches and stores instructions, how the PC controls flow, how you ca