Please note that, this is not new. A few people already have C64 Tower computers. Some of them are self-built, and others are bought from PPI company. And also I heard that, an electronics shop/firm makes this modification in Istanbul/Turkey. But I guess many of the towers I mentioned above use the original power supply, not the power supply of the tower case.

  In this modification, I have used tower's supply for c64, 1541, and a few experimental devices. Currently I have two keyboard solution for C64 Tower. One of them uses original keyboard with some interfaces and a easy-to-find switch-box cable. The other solution uses an AT type PC keyboard. You can find these documentations in the hardware section of these pages.
 To be informed correctly, please also read discussions below.

Related Online Documents for C64 Tower Projects

• Wiring schematics and description to connect a C64 to PC case supply.
• Description for connecting a 1541 to PC case, with drawings.
• Take this as an incomplete introduction
• Once I found this price list of PC64 from PPI on the net.
• An old post which is about fitting a C64 into a slim case.
• A document from funet archive for 12V conversion. Note, it's not applicable for new C64c machines.

Solution to Keyboard Problem :

• This keyboard modification is for C64 Tower. No software patch.
• C128D Keyboard for C64 mod. in MJK's page
• Separating C64's keyboard document by sears@tenet.edu
• C64 keyboard matrix definition by sears@tenet.edu
• This 57K long FAQ is about the PC type keyboards.
• The document of my AT-Keyboard interface checking program.
• User manual of atkeyb for LUnix operating system.
• User manual of at-keyb for C64 Basic
• If you want to give a try to AT-Keyboard in C64 Basic
• Another approach to connect a PC-XT Keyboard to C64
• A web page for PC Keyboards.
• Usenet and e-mail messages on C64 Tower and Keyboard

For using an AT-keyboard with C64 you need this program, which has little compatibility problems.
the program for normal use : at-keyb.exe
the program for lunix : atkeyb.exe
documentation : at-keyb.txt
doc. for lunix : atkeyb.txt
uuencoded prg. : at-keybuue.txt
uuencoded prg. : atkeybuue.txt

With these boot utility for C128, a C128 can be booted up with AT-keyboard driver loaded in C64 mode.
the boot utility : autoatkey.exe
the binary driver code : atkeyboard.exe
uuencoded utility : autoatkeyuue.txt
uuencoded binary : atkeyboarduue.txt

AT Keyboard Test Routine : A step to use an AT keyboard. After building the interface, you can test it with this program:
The document : keybchk.html
The binary : keyb-check.exe
The binary for lunix : keybchk.exe
Uuencoded binary : keyb-checkuue.txt
Uuencoded for lunix : keybchkuue.txt

Usenet Discussions on C64 Tower subject :

• Page for initial discussions concerning viability
• Initial posts above in one big HTML file (38K)
• Above posts in one text file
• Page for discussions about connecting the keyboard.
• Keyboard and C64 Tower posts in HTML (21K)
• C64 Tower and Keyboard posts in one big text file

Ilker Ficicilar
Physics Department - Middle East Technical University - Ankara - Turkiye
filker@newton.physics.metu.edu.tr
ilkerf@geocities.com
c068214@metu.edu.tr