FPGA VAX update, now DIY TTL computers

woodelf bfranchuk at jetnet.ab.ca
Tue Nov 8 18:36:13 CST 2005


Stegeman, Henk HJ SITI-ITIBHW5 wrote:

>The reason is the effort it takes......
>Ask anybody who actually  made a CPU  ( I myself did a 12 bit
>  TTL based, single address single accumulator machine).
>The real effort is actually building and debugging the unit.
>  There is only so much time you have....
>  
>
>>I've always thought that 24 bits is a nice word size for a small 
>>computer.
>>    
>>
> 
>Much too big to actually build in TTL.
> 
>
 Well everybody likes 12 bits...
  http://www.cray-cyber.org/hardware/Hardware.php  
   Forget TTL, go tubes!





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