FPGA VAX update, now DIY TTL computers

Gordon JC Pearce gordonjcp at gjcp.net
Wed Nov 9 02:19:46 CST 2005


woodelf wrote:
> 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!

They can't calculate the difference between 926kB and 926MB though - 
look at those filesizes!  Either they've got that wrong or NTL have 
given me one hell of an upgrade overnight.

Gordon.





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