Author Topic: I've designed a circuit board and soldered all the pieces. (Read 10986 times)

Metario · March 25, 2017, 12:03:00 AM

Quote from: Metario on March 24, 2017, 11:58:58 PM

buy a bus pirate (~30 usd) and visualize the data for us ty

or an oscilloscope

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Meldaril · March 29, 2017, 10:49:40 AM

How's the instruction-decoder/control unit coming along? Are you using a finite-state automaton?

shamester · March 29, 2017, 11:07:32 AM

seriously though, this is pretty awesome

DrenDran · March 31, 2017, 12:21:07 PM

I basically rebuilt everything and made it neater.

After:

Before:

Steve5451� · March 31, 2017, 01:19:16 PM

looks great

DrenDran · April 09, 2017, 10:27:35 PM

New video:
https://youtu.be/aX5uWmqMdtc

Insert Name Here� · April 09, 2017, 10:31:33 PM

Do you have any estimate of how many hz / khz / mhz it's running at?

DrenDran · April 09, 2017, 10:32:40 PM

Quote from: Insert Name Here� on April 09, 2017, 10:31:33 PM

Do you have any estimate of how many hz / khz / mhz it's running at?

In the video it's clearing going about 1Hz. (See the yellow blinking led furthest on the camera on the mini-breadboard)
The chips are all rated for at least a Mhz however. How fast the clock is is determined by what resistor I use with the timer chip.

Insert Name Here� · April 09, 2017, 10:34:41 PM

Ah alright cool

DrenDran · April 11, 2017, 04:57:46 PM

New picture:
http://i.imgur.com/dRdGJdu.jpg

I updated the OP to show what commands the machine can now interpret.
I've already gotten a basic "count by twos" program to operate correctly.
I still need to at least add the "set memory at address to gen register's value" before I make a new video.

After that I'll add the comparison unit and allow for conditional jumps

Meldaril · April 18, 2017, 08:36:19 PM

How's it going?

DrenDran · April 19, 2017, 12:51:23 PM

Quote from: Meldaril on April 18, 2017, 08:36:19 PM

How's it going?

Actually quite well! I've updated the OP with a new picture and a few more opcodes.
I'll post a video this evening that shows the machine running a few basic programs I've made for it.

SeventhSandwich · April 19, 2017, 01:22:25 PM

So, are you an EE or an ECE major in college?

DrenDran · April 19, 2017, 02:25:09 PM

Quote from: SeventhSandwich on April 19, 2017, 01:22:25 PM

So, are you an EE or an ECE major in college?

Bachelor of arts in biology with russian and criminal justice minors.

espio100 · April 19, 2017, 04:05:29 PM

But will it run crysis?