english greek

The Newbrain Forum

Anything about the Newbrain Home Computer

You are not logged in.

Add to: Mr. Wong Add to: Webnews Add to: Icio Add to: Oneview Add to: Folkd Add to: Yigg Add to: Linkarena Add to: Digg Add to: Del.icio.us Add to: Reddit Add to: Simpy Add to: StumbleUpon Add to: Slashdot Add to: Netscape Add to: Furl Add to: Yahoo Add to: Spurl Add to: Google Add to: Blinklist Add to: Blogmarks Add to: Diigo Add to: Technorati Add to: Newsvine Add to: Blinkbits Add to: Ma.Gnolia Add to: Smarking Add to: Netvouz Information

#1 29-04-2020 16:02:27

centrespot
New member

(Hover for details)
Registered: 14-02-2020
Posts: 1
Reputation :   

Newbrain PCB layout schematics

Hi
Would anyone know where to get a copy layout of the rom/ram pcb

 

#2 01-05-2020 17:58:02

admin
Administrator

(Hover for details)
Registered: 01-01-1970
Posts: 13
Reputation :   

Re: Newbrain PCB layout schematics

From Saphir17:

Hello Centrespot

There are none.
The NB was designed 1980-1981 and in those days the layout was most likely done on paper and film.

I have knowledge of one person that have drawn the entire NB and Expansion in Eagle, true to original design, but its not for public use.

You say ROM/RAM board. There is only a RAM board. The ROM's are on the main board.


If you or someone have the eager to take on the task, here are some design hints/requests :
- Use KiCAD 5.x. Eagle is becoming old quickly.
- The RAM Board : route for +5V RAM, not the old +-5V,12V (or even one static RAM. Needs some design changes thou)
- Do 4-layer for use of GND and VCC planes.
- Use SMD where possible.
- Use HCT/HC logic where possible.

Well.. just some thoughts.

 

#3 18-06-2020 16:03:48

flypie
New member

(Hover for details)
Location:  : Liverpool
Registered: 18-06-2020
Posts: 1
Reputation :   

Re: Newbrain PCB layout schematics

Hi,

I just started creating the schematics in KiCAD the problem is that the originals scans are inconsistent with themselves and reality. One of the things I'm looking for to help me is some detailed photographs of the mainboards where any print can be read. The more information the better.

https://github.com/flypie/NewBrain

 

#4 21-06-2020 16:47:30

kluder
Seasoned

(Hover for details)
Registered: 24-04-2009
Posts: 25
Reputation :   

Re: Newbrain PCB layout schematics

Hi

It's been many years since I've made NewBrain schematich in Eagle.
I now transferring them to Kicad.
this PDF document shows NB Main schematich and PCB in Eagle and Kicad respectively.

https://newbrainemu.eu/components/com_a … -Board.pdf


Of other NB schematich I have made are the following.
Battery Module (NB12125 iss2)
Battery Module (NB12126 rev.3)

NB Disc Controller (NB 12145 rev.3)
NB Disc Controller (NB 12145 rev.6) - (Not ready)

Expansion Card
Expansion Card (KD10013)
Expansion Card (KD10016) PiBox
Expansion Card (KD10017)
Expansion Card (NB12134)
Expansion Card (NB12138)
Expansion IO Interface (Data Center Denmark)
Expansion Main Board (NB 12140 rev.5)
Expansion Sub Board (NB 12141 rev.3)
Expansion Sub Board (NB 12141 rev.6)
Expansion Sub Board (NB 12143 rev.1) -LP

128K ADD Board
Key Board ADD (NB 12139 rev.1)
Key Board A (NB 12127 rev.3)
Key Board Model A (NB 12127 rev.?) A rev.3 PCB which I have changed for new keys
Key Board AD (NB 12125 rev.3)

NB Main Board (NB 12117 rev.7)
NB Main Board (NB 12117_x_7 +) here i have made connections to a reset button
NB Main Board DK (NB 121xx rev.) A Danish main board

NB Store Board (NB 12118 rev.)
NB Store Board (NB 12118 rev.10)

Disk Unit (8514_MB_10021) Power Supply in Disk Unit
Power Supply (000553)
Power Supply (NB 1100x)

Regards
Klaus

Last edited by kluder (22-06-2020 01:56:55)


use google to translate
 


Add to: Mr. Wong Add to: Webnews Add to: Icio Add to: Oneview Add to: Folkd Add to: Yigg Add to: Linkarena Add to: Digg Add to: Del.icio.us Add to: Reddit Add to: Simpy Add to: StumbleUpon Add to: Slashdot Add to: Netscape Add to: Furl Add to: Yahoo Add to: Spurl Add to: Google Add to: Blinklist Add to: Blogmarks Add to: Diigo Add to: Technorati Add to: Newsvine Add to: Blinkbits Add to: Ma.Gnolia Add to: Smarking Add to: Netvouz Information

Forum Tools

Board information

Board statistics
Total number of registered users: 141
Total number of topics: 105
Total number of polls: 0
Total number of posts: 376
Total number of posts this week: 1
User information
Newest registered user: pigivi
Registered users online: 1
Guests online: 689
Online: 
ellvis

Powered by Agora 1.0.4 Acropolis

© Copyright 2007 - 2008 Joomla Me!. All rights reserved.

Powered by Elxis - Open Source CMS.
Copyright (C) 2006-2020 Elxis.org. All rights reserved.