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Archives  TK-II Dual PS/2 Firmware
 
This firmware started out life with dual PS/2 keyboard capability baked in, and will work in all the older hardware shown below while supporting this feature. It will also work in some current designs. However it is considered depreciated, and will no longer be implemented  in newer hardware designs to come. Also it's important to keep in mind that some of the newer boards absolutely require the 'J' version firmware and will not work correctly with anything else.

The last two updates corrected the following bugs...

The CTRL+SHIFT+Arrow keys combinations will now render the correct Atari key codes.

There will no longer be any interference with the stock Atari keyboard's CTRL, SHIFT, or BREAK keys if the XEGS mode has been toggled OFF (CTRL+ALT+X to toggle, ALT+X to view present setting).

Dual PS/2 Keyboard Firmware Download

Picture
Version: 2.6
Date: June 3rd 2021

Exceptions: Will not work for the ARROW2JOY-XLD upgrade, TK-II-PBJ, or the 576NUC+
File Includes:​
  • Flashing ATR: run from SIO2PC for the JOY2PIC Programmer
  • Flashing XEX: run from Loader for the JOY2PIC Programmer
  • HEX File for 3rd Party Programmers like the PICkit series
Go to On-Line Manual
Note For TK-II-PBJ or TK-II-Stereo Boards:  After assembly and before plugging in the Pokey chip(s), be sure to program the on-board PIC chip via the board's ICSP header prior to installation in the Atari .

Archives  TK-II Old Version Boards
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TK-II-XEGS
TK-II-XEGS_schematic.pdf
File Size: 23 kb
File Type: pdf
Download File

TK-II-XEGS_bom.pdf
File Size: 78 kb
File Type: pdf
Download File

TK-II-XEGS_pcb.zip
File Size: 27 kb
File Type: zip
Download File

Picture
TK-II-XEGS-S
TK-II-XEGS-S_schematic.pdf
File Size: 21 kb
File Type: pdf
Download File

TK-II-XEGS-S_bom.pdf
File Size: 31 kb
File Type: pdf
Download File

TK-II-XEGS-S_rev2_pcb.zip
File Size: 26 kb
File Type: zip
Download File

Picture
TK-II Original PiggyBack Board
TK-II-PIGGYBACK_schematic.pdf
File Size: 21 kb
File Type: pdf
Download File

TK-II-PIGGYBACK_bom.pdf
File Size: 199 kb
File Type: pdf
Download File

TK-II-PB_mouse-keyboard_connections.pdf
File Size: 52 kb
File Type: pdf
Download File

TK-II-PB_pcb.zip
File Size: 25 kb
File Type: zip
Download File

Picture
PiggyBack Version 2 Standard Orientation
TK-II-PB_V2_schema.pdf
File Size: 30 kb
File Type: pdf
Download File

TK-II-PB_V2_Standard_gerbers.zip
File Size: 10 kb
File Type: zip
Download File

TK-II-PB_V2_Reverse_gerbers.zip
File Size: 10 kb
File Type: zip
Download File

Picture
PiggyBack Version 2 Reverse Orientation
These Version 2 Boards are not Available from OSH Park because:
​Must be made from thinner material *
​
Upload gerbers to 
ALLPCB or JLCPCB
for manufacture and purchase.


*​Select PCB Board Thickness = 0.8 mm

Picture
Dual keyboard capable with splitter cable
TK-INTFC-S_gerbers.zip
File Size: 6 kb
File Type: zip
Download File

TK-INTFC-S_mounting.pdf
File Size: 12 kb
File Type: pdf
Download File

Buy TK-INTFC-S from OSH Park
Picture
J1 is dual keyboard capable with splitter cable, making J2 optional
TK-INTFC_gerbers.zip
File Size: 7 kb
File Type: zip
Download File

TK-INTFC_mounting.pdf
File Size: 15 kb
File Type: pdf
Download File

Buy TK-INTFC from OSH Park

Dual PS/2 Keyboard Diode Modification (prior to version 2)

Activates IRQ from 2nd PS/2 connector which was required on these older series boards to enable two keyboard operation.
Picture
TK-II XEGS Version
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TK-II PiggyBack Version
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