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Of course, I did what I do and I added support for this computer in my BespokeASM customizable assembler. This allowed me to write some larger projects than slu4's "minimal assembler" easily enabled. And with that, I ported my 32-bit primes calculation code to the slu4 Minimal CPU. What I found fascinating is that this code ran about the same speed (the PUTEY-1 is a small bit slower) in terms of how long it takes to find a prime value as the code runs on my PUTEY-1 breadboard TTL running at about one fourth the clock speed (480 KHz vs 1.8432 MHz). I attribute that to the more sophisticated ALU I built in my TTL CPU that does bit shifting (left and right) and value comparisons directly in hardware. Of course, I understand that the Minimal CPU's whole goal is to be minimal, I just still found this comparison interesting.
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- I was wanting an assembler I can use with my breadboard CPU, but the only one that allowed custom ISAs is Windows only. So, I created my own assembler with Python for custom ISAs, and included a configuration file for the original instruction set of Ben Easter's SAP-1. Still a bit rough, but usable.
- Defining assembly instructions has killed my love of this game ultra fast.
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