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Table of Contents for Programming Languages: a survey
A teaching language used on the web page http://www.plantation-productions.com/Webster/www.artofasm.com/Linux/HTML/ISA.html
" For example, most processors you find will have instructions like the following:
Data movement instructions (e.g., MOV)
Arithmetic and logical instructions (e.g., ADD, SUB, AND, OR, NOT)
Comparison instructions
A set of conditional jump instructions (generally used after the compare instructions)
Input/Output instructions
Other miscellaneous instructions "
" The Y86 CPU provides 20 instructions. Seven of these instructions have two operands, eight of these instructions have a single operand, and five instructions have no operands at all. The instructions are MOV (two forms), ADD, SUB, CMP, AND, OR, NOT, JE, JNE, JB, JBE, JA, JAE, JMP, BRK, IRET, HALT, GET, and PUT. "
HALT is program termination. BRK is a temporary halt that can be resumed from. JB and JB are JLT and JGT. IRET is return from interrupt. GET and PUT are input and output.
"The Y86 processor supports the register addressing mode7, the immediate addressing mode, the indirect addressing mode, the indexed addressing mode, and the direct addressing mode."
Later, they mention expansion to the NEG (arithmetic negation) instruction, and the SHL, SHR, ROL, ROR, and XOR instructions.
Links:
Both https://www.semipublic.comp-arch.net/wiki/RISC_versus_CISC and http://www.cpushack.com/CPU/cpu4.html call the Motorola 68000 'elegant' so maybe we should take a look at it.
My purpose in including this section is NOT to teach the reader the basics of assembly language and computer architecture; i assume that the reader already knows that. I just want to give you more food for thought about 'minimal' programming languages.
" The CISCs that failed - DEC VAX and the Motorola 68000 - were the most CISCy.
Most instructions were variable length.
Some frequently used instructions could be very long.
Many instructions had microcode.
Many operations had side effects.
They had complicated addressing modes - elegant in their generality, but complicated, sometimes necessitating microcode just to calculate an address. " -- https://www.semipublic.comp-arch.net/wiki/RISC_versus_CISCLinks:
A descendent is the ColdFire?