Can anyone tell me what code this is?

Question

This is a quiz of sorts. I wish to know what microprocessor uses these instructions who makes it what does it do 0000 90 GHI 0 
0001 B6 PHI 6
0002 F829 LDI DOIT 
0004 A6 PLO 6
0005 E0 SEX 0 
0006 6400 OUT 4,00 
0009 3F09 BN4 * 
000B 6C INP 4 
000C 64 OUT 4 
000D 370D B4 * 
000F F860 LDI #60 
0011 A6 PLO 6 
0012 E0 SEX 0 
0013 6401 OUT 4,01
0015 3F15 BN4 *
0017 E6 SEX 6 
0018 6C INP 4 
0019 64 OUT 4 
001A 371A B4 *
001C E0 SEX 0 
001D 6402 OUT 4,02
001F E6 SEX 6
0020 3F20 LOOP: BN4 * 
0022 6C INP 4 
0023 64 OUT 4 
0024 3724 B4 * 
0026 26 DEC 6 
0027 26 DEC 6
0028 46 LDA 6 
0029 C4 DOIT: NOP 
002A C4 NOP 
002B 26 DEC 6 
002C 56 STR 6 
002D 64 OUT 4 
002E 7A REQ 
002F CA0020 LBNZ LOOP 
0032 7B SEQ 
0033 3020 BR LOOP

johnbeetem · Accepted Answer

There's only one microprocessor I know of that has a SEX instruction. It was the first CMOS microprocessor and was produced by the company that pioneered CMOS. The company originally called it COS/MOS: COmplementary-Symmetry Metal-Oxide Semiconductor.

To avoid spoiling the game for others, I won't name the company or processor. But I found it quickly at Wikipedia, and the page has your assembly language listing

I can't believe I still remember that chip. It's not like I ever used it. IIRC I looked at the instruction set and found it pretty ugly. I think its chief advantage was that COS/MOS could be powered from 3V to 15V, so the "SEX machine" was a good fit for industrial applications where you needed really wide noise margins. COS/MOS was also really low power, drawing next to nothing at low frequencies.

michaelkellett · Answer

Much too easy - just Google the first 5 lines of code. I considered using one a long time ago but we never did - Motorola brought out a CMOS 6805 just in time. MK.

Capper · Answer

Intersil semiconductor CDP1802 .. TEST ALU OPS 0000 90 GHI 0 .. SET UP R6 0001 B6 PHI 6 0002 F829 LDI DOIT .. FOR INPUT OF OPCODE 0004 A6 PLO 6 0005 E0 SEX 0 .. (X=0 ALREADY) 0006 6400 OUT 4,00 .. ANNOUNCE US READY 0008 E6 SEX 6 .. NOW X=6 0009 3F09 BN4 * .. WAIT FOR IT 000B 6C INP 4 .. OK, GET IT 000C 64 OUT 4 .. AND ECHO TO DISPLAY 000D 370D B4 * .. WAIT FOR RELEASE 000F F860 LDI #60 .. NOW GET READY FOR 0011 A6 PLO 6 .. FIRST OPERAND 0012 E0 SEX 0 .. SAY SO 0013 6401 OUT 4,01 0015 3F15 BN4 * 0017 E6 SEX 6 .. TAKE IT IN AND ECHO 0018 6C INP 4 .. (TO 0060) 0019 64 OUT 4 .. (ALSO INCREMENT R6) 001A 371A B4 * 001C E0 SEX 0 .. DITTO SECOND OPERAND 001D 6402 OUT 4,02 001F E6 SEX 6 0020 3F20 LOOP: BN4 * .. WAIT FOR IT 0022 6C INP 4 .. GET IT (NOTE: X=6) 0023 64 OUT 4 .. ECHO IT 0024 3724 B4 * .. WAIT FOR RELEASE 0026 26 DEC 6 .. BACK UP R6 TO 0060 0027 26 DEC 6 0028 46 LDA 6 .. GET 1ST OPERAND TO D 0029 C4 DOIT: NOP .. DO OPERATION 002A C4 NOP .. (SPARE) 002B 26 DEC 6 .. BACK TO 0060 002C 56 STR 6 .. OUTPUT RESULT 002D 64 OUT 4 .. (X=6 STILL) 002E 7A REQ .. TURN OFF Q 002F CA0020 LBNZ LOOP .. THEN IF ZERO, 0032 7B SEQ .. TURN IT ON AGAIN 0033 3020 BR LOOP .. REPEAT IN ANY CASE

Can anyone tell me what code this is?

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