IIGS Custom Chips

5 posts / 0 new
Last post
Offline
Last seen: 5 days 6 hours ago
Joined: Aug 11 2015 - 20:13
IIGS Custom Chips

If anyone has any broken/spare not used IIGS motherboards,
would you have any of the following IC's:

344S0046 VGC (Video Graphics Controller)
344S0066 CYA (Control Your Apple)
344S0050 FPI (Fast Processor Interface)
344S0049 (Slot Maker)
344S0048 (ADB GLU)legacy Keyboard/ADB Multiplexer General Logic Unit
344S0040 RTC (Real Time Clock)
344S0052 SGLU (Sound General Logic Unit)
344S0047 Mega II(Apple II Logic Core Controller)

The goal is to decapp the chips,
a die photo and then make a schematic from
the photo.

The results will be put on a website (project5474.org)
to use, study etc and gain more information
about the Apple IIGS.

Offline
Last seen: 17 hours 47 min ago
Joined: May 27 2009 - 01:37
Re: IIGS Custom Chips

I'd assume that any decapping project with the resources to do it right and to do all those chips would simply go buy a IIgs board or rig. You can get started faster as opposed to waiting for a donation.

ggb
Offline
Last seen: 3 hours 31 min ago
Joined: Mar 13 2012 - 05:12
Re: IIGS Custom Chips

The mega ii, vgc, fpu and cya should already be on the way.

Offline
Last seen: 5 days 6 hours ago
Joined: Aug 11 2015 - 20:13
Re: IIGS Custom Chips

ggb

What is the stage you are at of these chips?

Offline
Last seen: 5 days 6 hours ago
Joined: Aug 11 2015 - 20:13
A development has now

A development has now occurred.
The Mega II chip has now been decapped.

You can read about it here:
https://twitter.com/babbageboole

The post is on May 28.

If you would like to download the photos of the decapped Mega II
then you can at this address:

https://drive.google.com/uc?id=1TqPdwyfFp49lct1FuZCjHjz5iROM3IZy&export=download

Just a word of warning. There is 2.2G of photos so make sure you have sufficient room
to download.

Log in or register to post comments