NeXT Computers

NeXT Computer, Inc. => Black Hardware => Topic started by: barcher174 on November 27, 2018, 03:17:32 am

Title: NeXT Laser Printer Hiding a nonADB Keyboard Controller?
Post by: barcher174 on November 27, 2018, 03:17:32 am
This is one of my more interesting discoveries IMO. Inside the next laser printer is a nonADB keyboard controller chip!

As it turns out next must have dual purposed the same package for different applications.

Here is a comparison of the N4000 monitor sound board along with the interface board from a laser printer:

(http://www.asterontech.com/Asterontech/next_interface/Asic_comparison.jpeg)

Here is the keyboard controller hacked into my nosoundADB board and tested to work stand alone:
(http://www.asterontech.com/Asterontech/next_interface/new_adapter.jpg)

Cool huh?
Title: NeXT Laser Printer Hiding a nonADB Keyboard Controller?
Post by: cubist on November 28, 2018, 05:45:51 am
Mask-programmable controller?  Looks to be part of the Sony universe (but fabbed by Motorola).
Title: NeXT Laser Printer Hiding a nonADB Keyboard Controller?
Post by: barcher174 on November 28, 2018, 08:49:51 am
It could be. I'm thinking it's likely custom silicon. The keyboard itself uses an IC labeled S38DC007PP01
Title: NeXT Laser Printer Hiding a nonADB Keyboard Controller?
Post by: Rob Blessin Black Hole on November 29, 2018, 06:50:50 am
Hello: It looks like it was available for sale here at some point SON875901427https://encompass.com/item/1737586/Sony/8-759-014-27/  Is it programmable like a ROM?

Can I pull info off of one with my  Rom burner?
Title: NeXT Laser Printer Hiding a nonADB Keyboard Controller?
Post by: cubist on December 01, 2018, 07:02:02 am
If mask programmed, unlikely.  But it will probably have a simple function.  Another reverse engineering project...
Title: NeXT Laser Printer Hiding a nonADB Keyboard Controller?
Post by: msch on March 04, 2019, 12:47:13 pm
thumbs up!