And if you do not have the time to read the entire article, the following is of most interest:

In 1988 Mr. Moore designed a 32-bit machine he called Sh-Boom. The zero operand architecture allowed instructions to be eight bits since the two stacks were the implied operands of most instructions. So four instructions could be packed into a 32-bit word and the CPU clock could be run at up to four times the memory clock cycle without the need for either pipelining or on-chip cache memory. The PGA design was sold and enhanced for a wider range of operations and PTSC has primarily marketed it as a Java chip, or a soft CPU for FPGA and ASIC designs that provides high performance while using few hardware gates.

Opty