# Omega8 ## Specifications 16B dedicated 8BIT RAM (128b) Max 16Hz clock 5V DC Power supply ## Instructions BIN INS | Description | Operation 0000 HLT | Halts the processor | {Stops Processor} 0001 OUT | Outputs value at address | O = [add] 0010 LDA | Sets A to value from address | A = [add] 0011 STA | Sets address to value from A | [add] = A 0100 ADD | Sets A to the sum of A and B | A += B 0101 SUB | Sets A to the difference between A and B | A -= B 0110 NOP | Does nothing | ... 0111 LDB | Sets B to value from address | B = [add] 1000 LSH | Bitshifts A to the left | A = A << 1 1001 RSH | Bitshifts A to the right | A = A >> 1 1010 JMP | Jumps to the address | P = add 1011 JNZ | Jumps to the address if the IsZero flag is zero | if (F[0] == 0) P = add 1100 INC | Increments A by one | A++ 1101 DEC | Decrements A by one | A-- 1110 ATS | Sets A to value at S | A = S 1111 ATB | Sets A to value at B | A = B ### Special SET | Sets value at address | [add] = val ## Registers A - 8BIT General purpose register B - 8BIT General purpose register F - 8BIT Flag register I - 8BIT Instruction register O - 8BIT Output register S - 8BIT Serial Input register P - 4BIT Program counter ### Flags _All get output on the controll pins F[0] - IsZero F[1] - F[2] - F[3] - F[4] - F[5] - F[6] - F[7] - IsHalted ## Pins (32) ### IN (16) I0-7 - Input pins A0-3 - Adress pins PE - Program enable pin W - Write program CLK - Clock pin RESET - Reset pin ### OUT (14) O0-7 - Output pins C0-7 - Controll pins ### 3V, GND ## Example code ### Code SET 1111 01110111 SET 1110 01110110 LDA 1111 LDB 1110 SUB STA 1101 OUT 1101 HLT ### Expected Binary 00101111 01111110 01010000 00111101 00011101 11110000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 01110110 01110111