cpu from scratch?

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edfed

Joined: 20 Feb 2006
Posts: 4229
Location: 2018

edfed

hello, i recentlly made some cleanup in my boxes, and found all these components

and now, i wonder, would it be possible to build a very simple cpu using all these fancy components..

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20 Jan 2017, 22:19

Trinitek

Joined: 06 Nov 2011
Posts: 257

Trinitek

Sure, if you've got enough of the right gates.

I tried designing a few CPU components on edge-connect cards, where they'd plug in to a backplane to make a complete processor. I overengineered them and ran out of 7400 chips, and that was the end of that.

20 Jan 2017, 23:08

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 17082
Location: In your JS exploiting you and your system

revolution

I'd say go for it. Make a very simple CPU just a few bits wide with just a few instructions. The experience alone will be worth it.

21 Jan 2017, 13:39

edfed

Joined: 20 Feb 2006
Posts: 4229
Location: 2018

edfed

first step, the debugger...

using 16 leds and 16 resistors, enough to see what are doing logic gates...

for the moment.

24 Jan 2017, 00:27

EvolutionEXE

Joined: 22 Nov 2014
Posts: 9
Location: Planet - Kuplinov ► Play

EvolutionEXE

edfed wrote:

first step, the debugger...

using 16 leds and 16 resistors, enough to see what are doing logic gates...

for the moment.

Very cool!

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25 Jan 2017, 15:10

EvolutionEXE

Joined: 22 Nov 2014
Posts: 9
Location: Planet - Kuplinov ► Play

EvolutionEXE

edfed wrote:

first step, the debugger...

using 16 leds and 16 resistors, enough to see what are doing logic gates...

for the moment.

To help to create a cpu or motherboard has this one playlist from YouTube.
https://www.youtube.com/playlist?list=PLowKtXNTBypGqImE405J2565dvjafglHU

26 Jan 2017, 11:14

edfed

Joined: 20 Feb 2006
Posts: 4229
Location: 2018

edfed

cool videos. working on instruction set now, 8 bits opcodes, variable length instruction.

for the moment:

8 bits cpu, 8 bits data, 8 bits adress with possibility to grow.

01 Feb 2017, 17:39

EvolutionEXE

Joined: 22 Nov 2014
Posts: 9
Location: Planet - Kuplinov ► Play

EvolutionEXE

edfed wrote:

cool videos. working on instruction set now, 8 bits opcodes, variable length instruction.

for the moment:

8 bits cpu, 8 bits data, 8 bits adress with possibility to grow.

I will wait for the update to work with cpu.

01 Feb 2017, 20:15

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