Belgian Amiga Club

Amiga 1200+

By Jeroen Vandezande

About

This project is a re-implementation of the Amiga 1200 board started from the schematics.
I made some changes and enhancements to the original schematics.

Features

This project is Open Source: more on Bitbucket

I also post regular updates on Twitter: https://twitter.com/JeroenNumber42

Project history

Rev2

Here you can see Rev2 of the PCB with all the passives soldered.

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Testing the clearance of the PSU under the keyboard.

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Everything fits just fine under the keyboard and in the case.

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Here you can see the build-in PSU more clearly. It is a 30W PSU, so it supplies up to 6A@5V.

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Kickstart produces picture!

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Video out in DiagRom

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This is the backside of the A1200+
from left to right:

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All the PCBs together.

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Rev1


Rev 1 PCB, hopefully, this one will give me some screen output...
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May 2019
Booting Kickstart for the first time.
The colors are a bit off but still: HUGE step. Hooray!
A bug in the RGB bus is causing the colors to be off.
Image: Booting Kickstart

All the PCBs put together.

Image: Populated Rev1 board


Rev0



This is a rendering of the rev0 pcb
Image: a1200+ rendering


And some pictures of the real Rev0 pcb!

Image: a1200+ PCB




The Ram Board has arrived, soon will start populating that one...
Image: A1200plus ram board



Power-on reset of the keyboard controller and reset lines all over the board are working fine... I made sure that the reset was hold low for at least 450 ms.
Image: a1200 reset



Here is a picture of the connector on the bottom of the RamBoard and one on the main board... there will be 3 of those in a row
Image: a1200+ ramboard connector



Finished Test RamBoard ... and it fits on the mainboard!
Image: A1200+ finished ram board