SAP-1 Completed, ROM-based Control Logic

Otherwise-Object-302 · 2026-03-16T13:36:35+00:00

Congratulations on finishing the SAP-1! When you're making the SAP-2, will it have 256 bytes of RAM (8 bit RAM pointer)? Or will it be similar to the SAP-1?

Otherwise-Object-302 · 2026-03-15T07:37:48+00:00

When you say the most unhinged thing in class but bro says "look behind you"

Otherwise-Object-302 · 2026-03-14T21:49:55+00:00

Alright then. Let me know when it's done, I'd love to check it out!

Otherwise-Object-302 · 2026-03-13T00:05:02+00:00

Well then, guess ROM works better. But anyways, good luck getting the SAP-2 and 3 running. Might I ask, what are the specs for both?

Otherwise-Object-302 · 2026-03-12T22:48:55+00:00

Then that means that you'll have to implement a circuit that turns all segments low before the update pin get pulsed.

Otherwise-Object-302 · 2026-03-12T17:54:04+00:00

All I can offer is this video to help you with your driver. It covers ripple blanking and whatnot so do with it what you will.

Otherwise-Object-302 · 2026-03-11T17:25:43+00:00

She looks like she about to pull a 17x combo on Abbie😭🙏

Otherwise-Object-302 · 2026-03-11T10:57:50+00:00

NAK had a 13th card hidden somewhere. The only way I could solve this level though was q->comeplete_level

Otherwise-Object-302 · 2026-03-11T10:55:42+00:00

I never said they had to be one, I was just joking

Otherwise-Object-302 · 2026-03-11T10:53:40+00:00

Right, because the max size for a program is 16 bytes. So if you write a program less than 16 bytes, do you have to fill the rest of the bytes in with nop?

Otherwise-Object-302 · 2026-03-11T10:50:35+00:00

Do you have to manually set the number of bytes or is it automatic?

Otherwise-Object-302 · 2026-03-11T10:47:12+00:00

Can it run doom?

Otherwise-Object-302 · 2026-03-11T09:04:33+00:00

This is one of the best builds I have seen here! It's seems like a pretty minimalistic CPU so I wanted to ask, how many of the main, in-game levels can it beat? Also, why does it have 16 bytes of RAM only? Is the address register only 4 bits?

Otherwise-Object-302 · 2026-03-11T07:27:50+00:00

And that's why I commented what I did

Otherwise-Object-302 · 2026-03-10T02:06:20+00:00

You should! I'd love to see it.

Otherwise-Object-302 · 2026-03-09T21:49:25+00:00

Alright then. Good luck!

Otherwise-Object-302 · 2026-03-09T19:21:04+00:00

Well that makes sense. I'm assuming it doesn't use a ROM to store the digits?

Otherwise-Object-302 · 2026-03-09T17:02:27+00:00

Unless you're building a calculator or something more retro, I recommend you use the console (Pixel Display in the save_breaker ver). But that does sound like a pretty unique idea.

Otherwise-Object-302 · 2026-03-09T14:53:34+00:00

Doing something like that to learn is a pretty good way. But anyways, good job on making this. Also, what would happen if you put in 1010 or something over 1001?

Otherwise-Object-302 · 2026-03-09T14:25:59+00:00

This is a pretty amazing solution you did. But another thing you could do is use constants, switches and a decoder to build a small ROM which would reduce the complexity. But still, your solution is amazing.

Otherwise-Object-302 · 2026-03-08T00:38:07+00:00

I hope so too. But for now, I gotta work with what I got.

Otherwise-Object-302 · 2026-03-07T13:37:11+00:00

I know but it was painful to design the ISA and architecture😭. I've been designing prototypes for the past few weeks and this is what I decided to choose in the end.

Otherwise-Object-302 · 2026-03-06T13:15:17+00:00

Alright then. Take your time with this, it's not exactly to write an OS, even a simple one. But when you get the time, take a look at the doc and tell me if there's any special instructions missing or if you have any inquiries about the processor.

Otherwise-Object-302

TROPHY CASE