Now that I have an 8X300 (etc.) disassembler, which I've used to disassemble the Western Digital WD1000 and WD1001 firmware, and the Zendex ZX-203 firmware, I've become curious as to what other products used the SMS300/8X300/8X305. Does anyone know of any?
In the early to mid-1980s, the 8X300 was a good choice for hard disk controllers, because all instructions took 250ns, and a single instruction could read an I/O port or RAM location, shift and mask, and write another I/O port or RAM location. At the time, no MOS microprocessor was even close to that.
