Pdp11:MTPI - ikarishinjieva/unixV6-code-analyze-chs GitHub Wiki

instruction ===Instruction===MTPI ===Code===0066SS ===Operation===(temp) ← (SP)↑
(dst) ← (temp) ===Coden===若 (src) < 0,则置位
否则,清位 ===Codez===若 (src) = 0,则置位
否则,清位 ===Codev===清 ===Codec===无影响 ===Description===向上一指令空间写入数据
从当前态空间(由处理机状态字第15,14位决定)的堆栈弹出字数据,送入上一指令空间[先前态空间]寻址(由处理机状态字第13,12位决定)
The address of the destination operand is determined in the current address space. MTPI then pops a word off the current stack and stores that word in the destination address in the previous mode's(bits 13,12 of PS)[遗留问题] ===Example===无