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Tags: 8bit

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8Bit_Mlanich

8Bit_Mlanich

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8 Bit CPU

8 Bit CPU

This  computer has a data bus and a control bus. and on those busses there are external devices that you can send data to/from. the ALU is the same as My old Computer design at https://circuitverse.org/users/15083/projects/8-bit-cpu-80eab5d4-e248-4c33-960d-08b58cd655c3.the opcodes are also the same as my previus vertion.

also this one has a large display at the bottom that displays the time as the X and the line of code executed as the Y and the data bus value as the color.

the default program loads the UI data into ALU register A and loads ram address 1 as ALU register B. witch makes a accumulator. and then displays the value to the user output and the number display, if the user input value == 0 then jump to line 7 and resets the value to zero.

To start, pres the start button.

I am working on a new CPU that is much better. it will also have a link to a assembler(made in javascript). 


you can fork it and improve it and do whatever you want with it. Enjoy !!!


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8-bit arithmetic

8-bit arithmetic

An 8-bit addition/subtraction unit with two's complement arithmetic and an accumulator.

BCD displays are added for nicer user experience.

First steps in CircuitVerse


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8bit Magnitude Comparator

8bit Magnitude Comparator

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LC1.0

LC1.0

My first Computer, its still in Development, and am working on more space for your Code, more commands and etc.

I know this thing is not good at all, but it does its job and here are the possible instructions:

"01" -> Moves Value from next Adress to Register0. Example: Code "01 05" Loads Value 5 in Register0

"02" -> Moves Value form R0 to R1. Example: "02"

"03" -> Addes value from R0 and R1 and saves it in A. Example: "03"

"04" -> Moves Value from A to R0. Example: "04"

"05" -> Jumpes to given Adress in Code. Example: "05 00" Jumpes to Adress 00 in Code

"06" -> Compares if R0 and R1 are equal. Example: "06"

"07" -> Jumpes to given Adress if Command "06" returns false. Example: "07 03", Jumps to Adress 03 if "06" returns false


I know there are missing a lot of usefull commands, but this was my first test and i will work on it to get it better. 

Is there any way to get an clock faster than 50ms?



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User Image Amy

memory

memory

A working 4kB memory module that provides byte-addressable 1-byte words.


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alu

alu

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Computer

Computer

A really simple 8bit computer.

It has a 3bit opcode and an address length of 5bits.


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8bit-multiplier

8bit-multiplier

8 bit multiplir


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A programable CPU/Proccessor/computer/whatever this qualifies as! 256 bytes of RAM/Memory, a working ALU and processor, and programable. Takes commands as 32 bit inputs, explained at the top of the "CURRENT PROGRAM" subcircuit, currently setting the first variable to 3 and then incrementing it. to edit the program, change the constants at the top of the CURRENT PROGRAM subcircuit to the commands you want(commands are listed in the processor subcircuit). note: variables, if not set to a value somewhere previous in a program, will not be 0, but undefined(red). also, all numbers are stored as 8 bit, and will roll over. there is no difference between adding 255 and subtracting 1. if you want to use a different ALU, make sure to either adjust commands in the programs you make or use the same ones as mine.


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6052 Bank Switching

6052 Bank Switching