Search found 19 matches

by BigLadWhillis
Mon Jan 06, 2020 5:36 pm
Forum: Newbies
Topic: I have just completed the design for my first computer!
Replies: 11
Views: 1900

Re: I have just completed the design for my first computer!

Many hours of work and browsing this forum have lead to the design of my first computer!
These are the specifications:

32k ROM
~32k RAM
256b I/O

I have included the schematic:

output-onlinepngtools.png
Are there any final changes that i should make for my design?

Thank you all for the help ...
by BigLadWhillis
Sun Jan 05, 2020 9:07 pm
Forum: Newbies
Topic: I have just completed the design for my first computer!
Replies: 11
Views: 1900

Re: I have just completed the design for my first computer!

I have a suggestion or two, BigLadWhillis, although I've not spent much time with the drawing. Speaking of drawings, in future please consider posting in monochrome if possible. :)

A reminder about RAM chips. If it saves you any trouble -- and it might! -- feel free to exchange any address line ...
by BigLadWhillis
Sun Jan 05, 2020 5:50 pm
Forum: Newbies
Topic: I have just completed the design for my first computer!
Replies: 11
Views: 1900

I have just completed the design for my first computer!

Many hours of work and browsing this forum have lead to the design of my first computer!
These are the specifications:

16k ROM
~48k RAM SPACE (Not all allocated yet)
256b I/O

I have included the schematic:

output-onlinepngtools (1).png

Are there any final changes that i should make for my ...
by BigLadWhillis
Fri Jan 03, 2020 10:56 pm
Forum: Newbies
Topic: What UART should i use for my first computer?
Replies: 27
Views: 6495

Re: What UART should i use for my first computer?


Just a point here. Would it not be better to restrict all your questions regarding this build to a single thread? You seem to be asking the same questions is various different threads. It gets a little difficult to keep track of what has been answered where.
ahem... uhm you do make a... good ...
by BigLadWhillis
Fri Jan 03, 2020 8:46 pm
Forum: Newbies
Topic: What UART should i use for my first computer?
Replies: 27
Views: 6495

What UART should i use for my first computer?

I'm working on a computer and am wondering what UART i should use for 57600 baud, preferably i would want it to be easy to use and be reliable. I was looking at the Zilog ZDU0110RJX, Which is used for 57600 baud communication via serial without requiring a external clock, which makes my life so much ...
by BigLadWhillis
Fri Jan 03, 2020 7:59 pm
Forum: Newbies
Topic: For My First Computer Should Use A Serial Output Or VGA?
Replies: 13
Views: 2981

Re: For My First Computer Should Use A Serial Output Or VGA?

The 6502 primer's displays section presents options you'll want to consider and has lots of helpful links. Especially since this is your first computer though, you'll want to go through the entire 6502 primer. Other sections will have information you might not realize the importance of yet. BTW ...
by BigLadWhillis
Fri Jan 03, 2020 7:57 pm
Forum: Newbies
Topic: For My First Computer Should Use A Serial Output Or VGA?
Replies: 13
Views: 2981

Re: For My First Computer Should Use A Serial Output Or VGA?

I am now under the opinion of using a Serial Output due to it being easier for my first project, however, does anyone have any information on how to get started with UARTs, looking at google and youtube, they mainly show how to use it with boards like Arduino.

There are 2 sides to it.

One side ...
by BigLadWhillis
Fri Jan 03, 2020 6:31 pm
Forum: Newbies
Topic: For My First Computer Should Use A Serial Output Or VGA?
Replies: 13
Views: 2981

Re: For My First Computer Should Use A Serial Output Or VGA?

I am now under the opinion of using a Serial Output due to it being easier for my first project, however, does anyone have any information on how to get started with UARTs, looking at google and youtube, they mainly show how to use it with boards like Arduino.
by BigLadWhillis
Fri Jan 03, 2020 6:04 pm
Forum: Newbies
Topic: For My First Computer Should Use A Serial Output Or VGA?
Replies: 13
Views: 2981

Re: For My First Computer Should Use A Serial Output Or VGA?

using serial will limit the functionality of the computer however i am fine with this as this is my first computer and i am willing to make sacrifices for an easier design!
For your first computer you do want an easy design. So, you're on the right track. :) Indeed, even if VGA were your goal, it ...
by BigLadWhillis
Fri Jan 03, 2020 4:19 pm
Forum: Newbies
Topic: For My First Computer Should Use A Serial Output Or VGA?
Replies: 13
Views: 2981

For My First Computer Should Use A Serial Output Or VGA?

As many of you helpful people know(And you've helped a lot!), I'm working on my first 8-bit computer, but the question still remains, Should I use Serial as an output or something like VGA?

Would One Be Cheaper Over The Other?
Which Is Easier?
Does Serial Rely On As Much Graphical Hardware or Just ...
by BigLadWhillis
Thu Jan 02, 2020 8:33 pm
Forum: Newbies
Topic: What Memory Map Should I Be Using?
Replies: 5
Views: 1988

What Memory Map Should I Be Using?

I Am under the assurance of some members of the Forum that i should have my memory layout as ROM -> VIA -> RAM

However, How Much Of The Map Space should my RAM and ROM be taking up 50/50 25/75 etc..
As is common in the Newbies section, I am a beginner but looking to write my own kernel as i come ...
by BigLadWhillis
Thu Jan 02, 2020 8:30 pm
Forum: Newbies
Topic: What Type of RAM should i be using?
Replies: 5
Views: 1529

Re: What Type of RAM should i be using?

Thank you all for the replies, I will most certainly go with SRAM, is the IDT 71256SA a good choice, It does not have 512Kbit of Storage (Half of that) But is one that i can acquire easily, i am not expecting to have 32KB of ram also, Closer To 24KB
by BigLadWhillis
Thu Jan 02, 2020 8:23 pm
Forum: Newbies
Topic: Started the design for my 8-bit computer... but need help!
Replies: 15
Views: 3433

Re: Just Started The Design For My First 8-Bit Computer!

So I Recently started the design for my 8-bit computer, and have got the basics in (EEPROM reading and VIA). However i need a little bit of help:

#1. What ram would anyone recommend for my computer

#2. Does anyone use KiCad for design of boards like this? If so how would you go around having a ...
by BigLadWhillis
Thu Jan 02, 2020 8:08 pm
Forum: Newbies
Topic: Started the design for my 8-bit computer... but need help!
Replies: 15
Views: 3433

Re: Just Started The Design For My First 8-Bit Computer!

GARTHWILSON wrote:
BigLadWhillis wrote:
Thanks for the feedback, I have changed it and updated the schematic photo
(Be sure to take care of the 4081 that's still there too.) You might end up making major changes (and simplification) after you go through the 6502 primer.
Oh yeah... I didn't see that! Thanks again.
by BigLadWhillis
Thu Jan 02, 2020 7:40 pm
Forum: Newbies
Topic: Started the design for my 8-bit computer... but need help!
Replies: 15
Views: 3433

Re: Just Started The Design For My First 8-Bit Computer!

Welcome. Be sure to go through the 6502 primer, at http://wilsonminesco.com/6502primer/ . It was written to answer the questions and problems that kept getting brought up on the forum regarding making one's own 6502 computer. It is organized logically into 22 sections of design considerations ...