pc-thing/instructions_new/pop.ts


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import { PC } from "../pc.ts";

export default {
    function(this: PC, [reg1]: number[]) {
        if (!this.getMem(0x7000)) throw 'no stack pointer';
        if (this.getMem(0x7001) == 0) throw 'stack underflow';
        const r1 = this.lib.parseReg(reg1);
        this.registers[r1] = this.getMem(this.getMem(0x7001) + 1);
        this.setMem(0x7001, this.getMem(0x7001) - 1)
    },
    args: 1
}